CONTENTS: Welcome 1 Gas Valves 2 Gas Caps
Welcome to Gas valves (aka petcocks, fuel shut offs, fuel taps, fuel valves) and Gas caps (aka gas lids).
1 G A S V A L V E S
Fuel Valve (on tank): On or near the bottom of nearly every moped gas tank is a “petcock” or “gas valve” that has a lever or knob for manually shutting the fuel supply off, for when the bike is stored or transported. The reason for the shut off valve is gravity. Moped and most motorcycle gas tanks are higher than the engine and use gravity to move the gasoline out of the tank, instead of a fuel pump. The higher the liquid fuel level is above the carburetor, the higher the fuel pressure will be. If the the tank is too low, or the carb too high, no gas will come out, or it will even flow backwards. Everyone knows that liquids only flow downhill.
Vacuum Petcock (on tank): On most modern scooters and motorcycles the fuel valve is an automatic type, operated by the vacuum from the engine. When the engine stops, or whenever the suction in the vacuum line stops, the petcock shuts the gas off.
Float Valve (inside carb): In addition to the fuel valve, there is an second device, called the float needle or float valve, in the carburetor that shuts off the gas supply automatically. On a new bike with a new carburetor and clean gasoline, the float valve works all the time, so there is no need to turn the gas valve off after each use. On most old mopeds, the float valve leaks sometimes, and needs the operator to manually turn the gas valve off after each use to prevent gasoline from leaking out.
On-Off-Reserve: Besides turning the gas on and off, most gas valves also have a third position called “reserve”. Reserve is for when the tank is very low on gas. A little tube 1 or 2 inches long sticks up from the gas valve, inside the tank. When the gas is on “ON”, it exits from the upper end of the tube. When the level of gasoline drops below the tube, no more gas comes out, and the engine dies. This is called “hitting reserve”. The operator then switches the gas valve to “RESERVE”, which make the gas exit from the lower end of the reserve tube, at the very bottom of the gas tank. There is about 5 or 15 miles of gasoline available on reserve, enough to find a gas station. If a gas tank has rust crumbs, powder, or water droplets at the very bottom, it is better to not use the reserve because it lets dirt get through and will clog easily.
Fuel Valve Types
Bolt-on: Most modern motorcycles use the bolt-on design, where the tank has two small threaded 6mm bolt holes spaced about 30-35mm apart, with a 10mm main hole in the middle. A race track shaped rubber ring provides the seal. Angel (made in Taiwan by Tym) is the only pedal moped with a bolt on fuel valve. For some reason, bolt on fuel valves are rare on mopeds, but common on motorcycles.
Screw-on: Almost all mopeds use the screw-on design, where the tank has either a hole with internal threads, (female tank) or a fitting with external threads (male tank). For some reason, all internal thread moped gas tanks are M10x1 metric thread. External thread moped gas tanks are M12x1 (European), M14x1 (Asian), M14x1.25, M16x1, or M20x1 thread. Screw-on fuel valves do not seal at the threads like pipes, but rather have a sealing surface perpendicular to the threads, for a soft paper or plastic washer. They are tightened enough to compress the seal washer.
“Female” screw-on fuel valves for external thread tanks have the ability to point in any direction, because the valve main body does not screw on, instead only the nut turns. The special nut is a “turnbuckle style” in that it has right hand threads on one end and left hand threads on the other. This allows the valve to fit in tight places. It also means the nut has a top and bottom and won’t go on upside down, unlike a regular nut.
“Male” screw-on fuel valves for internal thread tanks also have the ability to point in any direction. When the seal washer is soft rubber and thick, and retained by a metal cup, it seals even when the valve is slightly loose and somewhat free to rotate.
Clamp-on: A third type of gas valve is clamp-on, found on Derbi mopeds with a plastic gas tank. It seals against the tank exit pipe semi-flexible soft plastic walls by o-rings squeezing radially inward by a hose clamp. There is an upgrade for the Derbi clamp-on valve. See Derbi parts.
Spigot Direction: L = left R = right D = down B = back (as you face the valve). Some models have room for more than one spigot direction. Many mopeds can have any spigot direction, because there is nothing near the petcock that interferes with the fuel hose. Then there may be choices. Other kinds are only available in one spigot direction. Sometimes an original valve that was “spigot down” must be replaced with one that is “spigot left”, and a longer piece of fuel line installed. This is the case for Peugeot, for example. Sometimes, if the valve is angled, and the spigot direction of the replacement valve is uphill, the new valve can affect fuel flow when the gas tank is really low. If it cannot be rotated and angled more spigot level or downwards, then the lower part of the tank will become unavailable when the liquid level reaches the highest part of the fuel line. That is, it will run out of gas prematurely.
Naming of Gas Valves: Many screw-on gas valves sold online are named by their true size (11,13, or 15mm), rather than their nominal size (12, 14, 16mm). This is a big source of confusion. For a bolt (external or male thread) the nominal (named) size is the true size, so an M6 (metric 6mm) bolt has a diameter of 6mm. But for a nut (internal or female thread), the nominal size is greater than the true size. An M6x1 nut has an internal diameter of 5mm. A 1/4 -20″ nut has an internal diameter of 0.20 inch, not 0.25. The difference between the external and internal diameter is approximately equal to the thread pitch. So a 12×1.00 nut measures 11.00mm inner diameter, while a 12×1.50 nut measures 10.5mm.
Gas Valves (Petcocks) for sale
|S C R E W – O N G A S V A L V E S|
|222866x||1||gas valve 10×1 male spigot down||$22||Peugeot 103 1976-82,|
|continued||any 10×1 tank with (enough) extension|
|222866||1a||gas valve 10×1 male spig D + A4 extender||$28||early Tomos top tanks: Bullet TT, TTLX|
|continued||same apps as #2, maybe Peugeot 102?|
|403300||2||gas valve 10×1 male spigot left||$18||Peugeot 103 1976-82,|
|continued||Cimatti (must remove R tank to install)|
|continued||Motron 1978-79 (tank has extension)|
|continued||Tomos MC50, Cosmo Colt 3|
|2+A2||2a||gas valve 10×1 male spig L + A2 extender||$38||Peugeot 102 1980 (must have 10-10 extender)|
|continued||Motron 1980 (must have 10-10 extender)|
|MBvalve||3||gas valve 10×1 male spigot left compact||$20||Motobecane Mobylette 1974-80|
|continued||same apps as #2|
|403100||4||gas valve 12×1 spigot down||$18||Batavus/Garelli/Sears/Sachs/JC Penney|
|continued||Cimatti (with original 10-12 adaptor)|
|continued||Tomos TX50 Super Tom|
|continued||fits Colombia (tube frame w/sideways valve)|
|229455||5||gas valve 12×1 spigot left round knob||$25||Tomos A35, others|
|401602||6||gas valve 12×1 spigot left||$20||Tomos 1976-05 A3 and A35 models|
|continued||Vespa Bravo 1977-80|
|continued||Colombia (tube frame w/sideways valve)|
|227125||6||gas valve 12×1 spigot left early Tomos||N/A||Tomos Bullet/A35 Sprint/Vespa Bravo|
|233727||7||gas valve 12×1 spigot right round knob||$20||Tomos Targa LX, LX 1994-on|
|continued||Tomos ST, Sprint 2007-on|
|401601||8||gas valve 12×1 spigot left extend knob||$20||Tomos A35 Targa/Vespa Grande|
|229169||8||gas valve 12×1 spigot left extend knob||$20||Tomos A35 Targa/Vespa Grande|
|401400||9||gas valve 12×1 side mount||$20||Puch Maxi, Newport, Vespa Ciao 1975-86|
|633783||10||gas valve 14×1 spigot down||$20||Honda NC50, NA50, Yamaha QT50|
|continued||General 5 Star ST, AMS Sierra 50|
|continued||other Asian tanks|
|TracIma||gas valve 14×1 spigot right||N/A||Trac Image, others|
|TracEag||gas valve 14×1 side mount||N/A||Trac Eagle, others|
|Diablo||gas valve 14×1.25||$30||Derbi Diablo, RD50 dirt bike mopeds|
|408200||11||gas valve 16×1 spigot down||$20||Sparta Foxi, Buddy, Flying Dutchman ’76-80|
|continued||Puch Magnum ’78-84, Odyssey (Solo) ’76-79|
|KTMgas||12||gas valve 16×1 side mount KTM orig||N/A||KTM Foxi Deluxe, Salsburg, Baron 1977-79|
|9+A3||12||gas valve 16×1 side mount||$40||KTM uses valve #9 $20 plus adapter #A3 $20|
|Indian||gas valve 16x 1.5 side mount Indian||N/A||Indian 1978-83 4-stroke, see Indian parts|
|Honda||gas valve 16x 1.5 spigot right||N/A||many 1970′s Hondas, many other motorcycles|
|Jawa||gas valve 20×1 spigot down Jawa||N/A||Jawa|
|632747||13||gas valve remote with on/off/res||$30||Trac Clipper 1980-85|
|continued||many more apps|
|F I L T E R S a n d H O S E|
|gas line||gas line 3/16″ clear nylon per foot||$1||all mopeds have 3/16″ (5mm) except Derbi|
|Yconn||gas line “Y” connector 3/16 for “gauge”||$2||a clear tube branch shows the liquid level|
|121585||F1||gas filter inline 3/16″ clear round||$4||for mopeds 3/16″ id hose (5mm)|
|209.6||F2||gas filter inline 3/16″ clear flat green||$5||for mopeds 3/16″ id hose (5mm)|
|151920||F3||gas filter inline 1/4″ clear round||$5||for small motorcycles 1/4″ id (6.4mm)|
|151921||F4||gas filter inline 1/4″ clear 90deg angle||$5||for small motorcycles 1/4″ id (6.4mm)|
Popular moped gas tanks and their gas valves, for reference:
Gas Valves for reference, not for sale:
Gas valve inner seal disks for sale:
Gas valve rubber disks (inner seals) for reference:
The sizes, applications, and possible sourcing of these vital rubber disks is being studied. It is hoped that some of the common moped gas valves might use the same rubber seal as some kinds of Honda, Kawasaki, Suzuki, Yamaha, or others. When that information becomes available, it will be posted here. Then anyone could order a seal disk from any nearby OEM parts dealer.
Left, an actual original 1970′s Karkoma (Germany) gas valve from a 1979 Kynast moped, with only 50 miles of use. 30+ years of sitting with old, rotten gasoline premix has completely clogged the passageways with hard tar, and decomposed the seal disk to where it broke when the valve was disassembled. Part of the seal disk shaped like a smile broke off and stuck to the movable plate with handle. Usually when these get sticky the handle ends up getting snapped off, in addition to the seal disk crumbling and the holes clogged. This is the kind that uses a 3.3mm tall lip on the outer edge of the 2.0mm tall by 13.7mm diameter seal disk D4. Later 1980′s Karkoma valves did not have the lip. For those the D4 early seal disk lip must be carefully ground off.
Left, these four petcock inner seal disks are included in a few dozen KL Supply petcock rebuild kits, which in turn have a couple of hundred motorcycle and ATV applications. Besides those, there are about two dozen 1970′s and 80′s Asian mopeds: Taiwanese (General, Indian), Japanese (Honda, Yamaha, Suzuki), Korean (Trac, Dailim), that very likely use some of the same small parts as common Japanese motorcycles. Their rubber disks are hard and deteriorated after 30 years. The rest of their petcock is metal and lasts forever, or has round seal rings that are relatively easy to find.
|A D A P T E R S|
|adaptA1||A1||adapter 10×1 male to 12×1 male||$20||threaded 7×1 for filter, with 10×14 seal & cup|
|continued||fits tight places by adapting to “turn-nut-only”|
|adaptA2||A2||extender 10×1 male to 10×1 fem, 26mm||$20||threaded 7×1 for filter, with 10×14 seal & cup|
|continued||lowers 10×1 gas valve 26mm away from tank|
|adaptA3||A3||adapter 12×1 female to 16×1 male||$20||adapts a Puch side valve to fit KTM Foxi|
|adaptA4||A4||extender 10×1 male to 10×1 fem, 15mm||$15||threaded 7×1 for filter, with 10×14 seal & cup|
|continued||lowers 10×1 gas valve 15mm away from tank|
|reserve||reserve tube 1/8″od soft alum. per inch||$1||can be formed in a bend for side mount|
|O U T E R S E A L S|
|ring+cup||seal ring 10 id 14 od 6 tall w/metal cup||$2||original on Motobecane|
|continued||seals over a wide range of tightenings|
|ring10||seal ring 10 id 16 od 2 tall semi-soft||$2||for 10×1 male valves|
|continued||can be soft fiber, plastic, or hard rubber|
|ring07||seal ring 07 id 11 od 2 tall semi-soft||$2||for 12×1 female valves|
|continued||can be soft fiber, plastic, or hard rubber|
|I N N E R S E A L S|
|diskkark||D4||seal disk 13.7 x 2.0 x 3.3 lip urethane||$12||Karkoma (Germany) gas valve|
|continued||orig on Hercules, Kreidler, Kynast, Sparta|
|continued||orig on Colombia, Odyssey, others|
|reference||seal disk 13.9 x 1.6 OMG 3-hole w/lips||N/A||OMG (Italy) aftermarket gas valves|
|continued||retained by raised lips, fit into valve holes|
|disktrac||D2||seal disk 16.3 x 3.0 Trac 4-hole||$15||orig on ’80-84 Trac Clipper (Korean)|
|continued||more apps being investigated|
|reference||seal disk 18.8 x 2.4 KL Supply 18-6646||N/A|
|diskcub||D1||seal disk 19.3 x 2.0 Honda 16115-001-004||$10||orig on ’59-64 Honda C100 Cub, others|
|continued||fits Indian with 2 holes widened|
|diskvesp||D3||seal disk 21.8 x 2.3 Vespa 4-hole||$10||orig on Vespa scooters , 1960-83?|
|reference||seal disk 22.6 x 2.4 Kawasaki 11009-1188||N/A||equals KL Supply #18-6644|
|reference||seal disk 22.6 x 2.4 KL Supply 18-6644||N/A|
|reference||seal disk 23.0 x 2.4 KL Supply 18-6645||N/A|
|reference||seal disk 28.5 x 2.4 KL Supply 18-6643||N/A|
|reference||seal disk xx.x x x.x Derbi mopeds||N/A||blue silicone 4-hole|
|reference||seal disk xx.x x x.x Honda 17993||N/A|
|reference||seal disk xx.x x x.x Honda 16955-HA2-005||N/A|
|reference||seal disk xx.x x x.x Honda 16955-268-020||N/A|
|reference||seal disk xx.x x x.x Kawasaki 92065-094||N/A|
|reference||seal disk xx.x x x.x Kawasaki 92065-055||N/A|
|reference||seal disk xx.x x x.x Suzuki 44341-18450||N/A|
|reference||seal disk xx.x x x.x Suzuki 51455-010||N/A|
|reference||seal disk xx.x x x.x Yamaha 47X-24523-00||N/A|
|reference||seal disk xx.x x x.x Yamaha 137-24523-00||N/A|
Adapter A1: 10×1 male to 12×1 male adapter
Sometimes a gas tank has a 10 x 1 threaded gas valve hole that is close to a “wall”, preventing the gas valve from screwing on or off, unless the tank is removed. Sometimes removal of the tank is very difficult, like on a Cimatti City Bike. In those cases an adaptor fitting can be used to convert to a turn-buckle type gas valve, where only the nut turns.
A 5/16″ OD hydraulic tube fitting has a 1/2-24 thread, that can be cut down (rethreaded) to 12 x 1. The end cap is not used. Then it becomes a moped gas valve adapter. A tight-fitting 10mm washer made of plastic, paper, or other semi-hard material provides the seal, not the threads. The 12×1 die is not in most metric die sets.
Adapter A2: 10×1 male to 10×1 female extender, 26mm extension
On some 10×1 internal thread gas tanks, the gas valve needs to be lowered down in order to screw on and fit. The Peugeot 102 moped is the main example, where the gas valve 10×1 hole is near a “wall”.
Adapter A3: 16×1 female to 12 x 1 female
This is a turnbuckle type (LH and RH) nut like on the 12mm female gas valves, with left thread on the 12mm side and right thread on the 16mm side. It must be started in the correct position on the threads when installing, to make the inner (7 id, 12 od) seal washer (that came with the valve) and the outer (12 id, 16 od) seal washer (that comes with the adapter) both get squeezed enough when it is tightened. This replaces the 12mm turnbuckle nut that the valve came with.
Adapter A4: 10×1 male to 10×1 female extender, 15mm extension
This 15mm short extender is one piece aluminum. It comes with gas valve #1a. Here it is shown without the upper rubber (o-ring or ring with metal cup), that seals against the tank.
Gas valve outer seals: Screw on gas valves, unlike plumbing pipes, seal by a soft or semi soft ring, that is squeezed between the gas tank and the gas valve, as the valve or nut is screwed on tight. Plumbing pipes seal by the threads only, and don’t need a flange and soft ring. The sealing surface on both the tank and the valve must be flat and straight. If a gas tank has a damaged sealing surface, then the outer seal might leak, even when the seal and valve are fine. The remedy for a warped, misaligned or scratched sealing surface, on either the tank or the valve, is careful grinding with a flat spinning disk (with all gasoline evacuated).
Gas valve low cost substitutes: USA plumbers will recognize that the moped gas valve M10x1 thread is close to 1/8″ (named after the small inner diameter) National Pipe Thread Taper NPT . Because of the taper, a brass 1/8″ NPT (27tpi = 0.94mm) screws on and fits the 10×1 thread OK, because it’s about 9.5mm at first, tapering to 10.2mm. With teflon pipe thread tape, any 10×1 thread gas tank can be adapted with American standard pipe pieces, including shut-off valves. All of those things are sold in home improvement stores nationwide. The good side is those pipe pieces are inexpensive and easy to get. The bad side is they must be cleaned up and re-taped every time they are screwed on and off, and they don’t have any reserve feature.
Other sources of gas valves:
Get 2 It Sales: Fuel Valves moped and scooter gas valves, manual and vacuum, inline, screw-on, and bolt-on.
Four into One Vintage Honda motorcycle petcocks 20×1.5 (for $75), 16×1.5 (for $17.50), bolt-ons.
2 G A S C A P S
Gas caps come in 4 types. 1. Quarter turn, 2. Push in, 3. Screw on, 4. Pop up. Each type has different sizes.
Quarter turn has two “wings” on opposite sides that enter two slots in the gas tank lip. Then when the gas cap is rotated 90 degrees to the right, which is one fourth of a turn, it locks on and seals the outer edge by the spring tension in the wings. The spring has a certain amount of “travel” that allows the lid to work (seal) on a range of gas tank lip thicknesses, or as the rubber or cork gasket gets thin. But sometimes a thicker rubber washer is needed to get the wings to push harder and seal better. In the 30mm size an extra 2mm thick rubber is sold here, but not for 40mm, at this time.
Push in lid gas tanks have a smooth round wall, about as deep as it is wide. The lids are usually black plastic with thin flexible circular ridges that press against the wall. The entrance has a taper for easy operation. In the 1977 USA moped standards, push in gas lids were supposedly required to be quarter turn. Puch, Cimatti, Garelli, and Sachs switched from push-in to quarter-turn but not everyone else did. Again in 2010, quarter turn gas caps are mandated in the USA, this time not for safety reasons, but for environmental ones.
Screw on lid gas tanks have threads. The lid must be screwed on one or more full turns clockwise. The threads on the lid can be either female (internal) or male (external). Most modern screw on lids are more like bottle cap threads, more coarse than machine threads. Also the tops and bottoms of the threads have wide plateaus. Some are at right, not listed.
Pop up gas lids are generally on top tank mopeds and modern motorcycles. Turn the key or push the button and the lid pops open.
Vent Hole: All moped gas caps are “vented”. That means they have a tiny pinhole or channel that lets air get in or out. If the pinhole is blocked, after awhile a suction will develop, the gasoline supply will stop, especially with a full tank. They all have a vent design that prevents gasoline from shooting out, like a wall or a maze, but lets air get through. Some gas caps have a vent switch, “on” or open for riding, “off” or closed for transport and storage. All vented gas lids will leak gas if the tank is too full or leaned over too far.
Shrinkage: Unless they have been kept stored in an air tight bag, many of the vintage moped plastic gas caps shrink after 20 or 40 years. The Peugeot and Colombia black plastic push-in 30mm lids become 29 or 28mm. The 32mm late Derbi black plastic push-in lid becomes 30mm. The Garelli 42mm screw-on black plastic lid becomes 41 or 40. When a push in lid shrinks, it gets loose and falls off. One remedy for that is a “leash” made out of a twist tie. Another remedy is a thin rubber o-ring, but it’s hard to find the correct size. With push-in gas caps, the actual diameter will be slightly more, about 0.5 millimeter, than the tank hole inner diameter, to make a light press fit. So a 30mm lid should be 30.5mm wide, a 40 should be 40.5. With screw on male lids there can be shrinkage and the lid will still function, because it does not seal on the loose threads. But when a female (internal thread) screw-on lid gets smaller, it becomes tight and difficult or impossible to screw on.
|Q U A R T E R T U R N|
|50||gas cap 1/4 turn 27mm beat up on top||$8||unknown origin|
|206401||1||gas cap 1/4 turn 30mm (tank) chrome||$10||aftermarket, Puch Tomos Sparta many|
|rubber||1a||rubber washer 30 x 50 x 2 for cap #1||$1||can use 1 or 2 rubbers as needed|
|222145||5||gas cap 1/4 turn 30mm black Tomos||$20||1993-03? Tomos Sprint|
|vintage||34||gas cap 1/4 turn 30mm chro Puch w/cup||$65||78-86 Puch Maxi deluxe|
|vintage||8||gas cap 1/4 turn 30mm alum used Puch||$30||77-79 Puch Maxi standard|
|vintage||12||gas cap 1/4 turn 30mm chro. used Puch||$30||78-86 Puch Maxi deluxe models|
|vintage||7||gas cap 1/4 turn 30mm used Puch w/cup||$45||78-86 Puch Maxi deluxe models|
|229530||2||gas cap 1/4 turn 30mm chrome locking||$17||1996-on Tomos ST|
|vintage||21||gas cap 1/4 turn 30mm chrome Garelli||$35||1978-on Garelli and other Italian|
|vintage||3a||gas cap 1/4 turn 30mm alum Tomos||$30||1976 Tomos, can be polished|
|vintage||3b||gas cap 1/4 turn 30mm alum Tomos used||$15||1980 Tomos, said “add 2% oil”|
|222145||3c||gas cap 1/4 turn 30mm black Tomos||$25||1993-on Tomos Sprint “mix 1:50 2%”|
|vintage||48||gas cap 1/4 turn 30mm Honda NC50 used||$30||1977-83 Honda NC50 Express|
|vintage||49||gas cap 1/4 turn 30mm thin wing used||$30||1978-82 Honda PA50 Hobbit|
|vintage||51||gas cap 1/4 turn 30mm Angel used||$20||1977-79 Angel/Speed Bird (TYM)|
|vintage||18a||gas cap 1/4 turn 30mm 1970′s Suzuki||$20||no gasket|
|632610||10||gas cap 1/4 turn 40mm chrome||$12||aftermarket, Puch Tomos top tanks|
|222785||4||gas cap 1/4 turn 40mm black||$15||87-93 Tomos Golden Bullet TT|
|vintage||34||gas cap 1/4 turn 40mm chrome Puch||$50||78-81 Puch Magnum top tank|
|vintage||gas cap 1/4 turn 40mm Puch used w/cup||$40||78-81 Puch Magnum top tank|
|vintage||gas cap 1/4 turn 40mm Sears used w/cup||$25||1978 Sears Free Spirit|
|229545||6||gas cap 1/4 turn 40mm black locking||$25||96?-on Tomos LX top tank|
|223840||20||gas cap 1/4 turn 40mm chrome locking||$17||Tomos top tank LX, TT, TTLX|
|vintage||41||gas cap 1/4 turn 40mm wide wing chrome||$30||Pacer top tank, Benelli, other Italian|
|vintage||46||gas cap 1/4 turn 40mm thin wing locking||$35||1985-87 Trac Hawk, Image|
|vintage||47||gas cap 1/4 turn 40mm thin wing locking||$35||1986-88 Trac DH100 top tank|
|vintage||18a||gas cap 1/4 turn 40mm thin wing chrome||$40||made in Japan, leather gasket|
|vintage||26||gas cap 1/4 turn 40mm chro external wing||$30||1979-81 Peugeot TSM top tank|
|vintage||23||gas cap 1/4 turn 40 locking external wing||$30||vintage aftermarket France|
|P U S H I N|
|vintage||18||gas cap push-in 30mm Hercules/Sachs||N/A||pre-78 Hercules/Sachs Westlake, Balboa|
|vintage||25||gas cap push-in 30mm shrunk Derbi||$25||1986-89 ones shrink, 1976-85 ones do not|
|Treats||9||gas cap push-in 30mm aftermarket Peug||N/A||https://www.treatland.tv/SearchResults.asp?Search=gas+cap+30mm|
|Treats||17||gas cap push-in 30mm aftermarket Puch||N/A||same link as #9 above|
|vintage||32||gas cap push-in 30mm Cimatti||$20||1976-77 Cimatti City Bike rear tank|
|vintage||29||gas cap push-in 30mm Puch used||$45||1974-76 Puch Maxi, some are less|
|vintage||31||gas cap push-in 30mm KTM grey (breaks)||$60||1977-79 KTM Foxi Deluxe|
|vintage||31a||gas cap push-in 30mm KTM broken-glued||$10||1977-79 KTM Foxi Deluxe|
|vintage||33a||gas cap push-in 30mm Peugeot (shrinks)||N/A||1976-82 Peugeot 103, 102 all|
|vintage||33b||gas cap push-in 30mm Peug spare plain||N/A||can add an o-ring to make it tight|
|vintage||33c||gas cap push-in 30mm Peug spare Esso||N/A||can drill a hole to make a “leash”|
|vintage||45||gas cap push-in 30mm Colombia||$30||1977 Colombia Open Road (tube frame)|
|improvB||43||gas cap push-in 30mm bottle cap improv||$5||has vent, splash guard, outer lip, and handle|
|improvP||44||gas cap push-in 30mm white PVC improv||$3||has no vent|
|vintage||51||gas cap push-in 30mm large teardrop||$30||1976-78 Gitane Cricket (Testi)|
|vintage||35||gas cap push-in 32mm Garelli||$35||pre-1978 Garelli, w/new rubber|
|vintage||24||gas cap push-in 32mm Derbi||$35||1976-89 Derbi Variant, all step thrus|
|232546||30||gas cap push-in 32mm Tomos||$15||2002-09 Tomos Revival, Streetmate|
|buna||36||buna rubber washer for #30 and #35||$4||requires grinding from 35 to 33mm|
|vintage||27||gas cap push-in 36mm Derbi Laguna||$65||1978-88 Derbi Laguna, RD50 top tanks|
|vintage||19||gas cap push-in 40mm Puch Korado||N/A||2000-2005 Puch Korado (made by Manet)|
|vintage||28||gas cap push-in 40mm Testi/Gitane||$15||1976-78 Gitane (made by Testi)|
|vintage||39||gas cap push-in 40mm chrome/rubber||$20||origin unknown, rubber ribs seal good|
|S C R E W O N|
|vintage||13b||gas cap screw-on male 30×1.75 MB chrome||$45||1976-80 Motobecane 50 and 40|
|vintage||13c||gas cap screw-on male 30×1.75 MB chrome||$35||Motobecane replacement part|
|vintage||38||gas cap screw-on male 30×1.75 MB plastic||$30||Motobecane replacement part|
|vintage||13a||gas cap screw-on male 30×1.75 MB used||$30||1976-80 Motobecane 50 and 40|
|vintage||14||gas cap screw-on male 30×1.75 MB locking||$40||vintage aftermarket France|
|vintage||37||gas cap screw-on male 40×1.75 MB white||$35||1978 Motobecane Model 7|
|vintage||40||gas cap screw-on male M40 x 2.0 black||$25||origin unknown|
|vintage||15||gas cap screw-on fem. AMF non vented||$15||1979-80 AMF Roadmaster rear engine|
|vintage||16||gas cap screw-on fem. M40 x 2.0 Vespa||$30||1974-84 Vespa Ciao,Bravo,Grande|
|vintage||16a||gas cap screw-on fem. M40x2 PVC improv||N/A||1974-84 Vespa Ciao,Bravo,Grande|
|vintage||22||gas cap screw-on fem. M42 x 1.5 Garelli||$40||early Garelli top tank, lid=40.5, tank=41.5|
|vintage||53||gas cap screw-on fem. M42 x 1.5 Italjet||$40||1977-79 Italjet Packaway folding moped|
|vintage||gas cap screw-on fem. M50x 2.0 Vespa Si||N/A||1980-88 Vespa Si (bigger gas lid)|
|vintage||42||gas cap screw-on fem. M50x 1.5 Demm||$50||Demm, Benelli (Wards Riverside)|
|P O P U P|
|vintage||11||gas cap pop-up 40mm General top tank||$65||1978-80 General 5 Star top tank|
|vintage||2a||gas cap pop-up clamps on||$17||Westwind (Spisni Lino), Baretta (Piccoli)|
More gas caps, not for sale, for your information: