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1974 Honda CL450K6 Fuel Caps, Latches & Petcock

Tank fittings for a 1974 Honda CL450K6 should be chosen around the tank mechanism that remains on the bike. Compare the chrome and matte-black cap packages, assess a separate latch repair, and check the petcock thread independently before finalizing the order.

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Currently viewing Gas Tanks, Caps, Petcocks & Parts

Honda motorcycle parts

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Honda CB front fuel tank holder rubber 17611-283-010

Honda CB Front Fuel Tank Holder Rubber ~ Replaces 17611-283-010

$7.87 USD
02-6534
Secure the front of your fuel tank with this Front Fuel Tank Holder Rubber, a direct replacement for OEM #17611-283-010. Fits a broad range...
Honda CB750 CB550 CB500 CB450 type filler chrome cap 17510-323-310

Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310

$49.95 USD
20-0045
Replace your OEM-type filler cap with this OEM Type Gas/Fuel Tank Chrome Cap, including gasket and hinge pin with E-clip for easy installation. Replaces...
Honda CB750 CB550 CB500 CB450 CB400 gas fuel tank cap latch assembly

Honda CB Gas/Fuel Tank Cap Latch Assembly

$44.95 USD
20-0083
Replace your gas cap latch with this Gas/Fuel Tank Cap Latch Assembly. Includes a chrome latch, return spring, latch mounting pin, and C-clip.Key Features•...
Honda CB750 CB450 CB350 CL350K3 gas cap rubber seal 17525-300-000

Honda CB Gas Cap Rubber Seal ~ Replaces 17525-300-000

$5.95 USD
20-0038
Replace your early Honda gas cap rubber seal with this Gas Cap Rubber Seal, replacing OEM #17525-300-000. Fits the earliest CB750K, CB450K/CL450K, and CB350K/CL350K/SL350K.Key...
Honda CB450 CB360 CB350 CL350K0 CL350K2 fuel petcock 16950-292-000

Honda CB Fuel Petcock ~ Replaces 16950-292-000

$34.95 USD
29-0542
Replace your CB450, CL450, CB350, or CB360 fuel petcock with this Fuel Petcock, replacing OEM #16950-292-000 with M16 x 1.5 threads. Please verify the...
Honda CB750 CB550 CB450 CB400F fuel tank cap latch 17510-323-310

Honda CB Matte Black Fuel Tank Cap with Latch ~ Replaces 17510-323-310

$69.95 USD
07-9967
Restore your classic Honda's tank with a factory-look matte-black finish using this Matte Black OEM-Type Fuel Tank Cap with Latch Assembly. A direct replacement...
Honda CB750 CB550 CB400F CB450 CB360 tank cap latch assembly black

Honda CB Gas/Fuel Tank Cap Latch Assembly ~ Black

$29.95 USD
01-9934
Replace a broken, missing, or worn-out fuel cap latch with this Gas/Fuel Tank Cap Latch Assembly in black. Includes the black latch, return spring,...
Honda CB750 CB550 joker machine black gas tank cap latch assembly

Honda CB Joker Machine Black Gas Tank Cap Latch Assembly

$79.95 USD
73-1157
Upgrade your fuel tank latch with the Joker Machine Custom Black Gas/Fuel Tank Cap Latch Assembly. Designed as a premium alternative to the discontinued...
Honda CB750 CB550 CB500 joker machine billet black flip-up gas cap

Honda CB Joker Machine Billet Black Flip-Up Gas Cap

$149.95 USD
73-1156
Joker Machine’s Custom Black Flip-Up Billet Gas Cap is a beautifully crafted upgrade to your original tank cap. CNC-machined from solid 1" thick billet...
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1974 Honda CL450K6 · Fuel Caps, Latches & Petcock Buying guide

Choose cap coverage to match the worn mechanism

Cap, hinge and latch contents differ across the standard-style and custom options. Inspect the tank’s mounting features before choosing a package, then compare the petcock’s M16 × 1.5 thread with the actual connection.

Parts to consider

Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310 Chrome fuel cap with hinge hardwareIncludes a gasket, hinge pin and E-clip; replacement reference 17510-323-310.View part Honda CB Matte Black Fuel Tank Cap with Latch ~ Replaces 17510-323-310 Matte-black cap and latch assemblyIncludes cap, gasket, hinge pin/E-clip and the latch, return spring, latch pin and C-clip.View part Honda CB Fuel Petcock ~ Replaces 16950-292-000 M16 × 1.5 fuel petcockFuel petcock with M16 × 1.5 threads; replacement reference 16950-292-000. Check the actual tank connection before ordering.View part

Related parts: Chrome latch and mounting pieces · Custom billet flip-up fuel cap · Custom billet latch assembly

Compare what each standard-style cap supplies

The chrome cap lists gasket, hinge pin and E-clip. The matte-black assembly lists those pieces plus its latch, spring, latch pin and C-clip. Decide which existing parts can be retained before choosing the larger package or adding the related chrome latch assembly for a narrower repair.

Plan custom cap and latch purchases together

The related billet cap has a spring-loaded alloy flange, gasket and alloy screw; its latching mechanism is sold separately. The related billet latch supplies a latch, return spring, screw and nut. Compare the actual tank mounting before combining them, keeping their separate package contents clear.

Buying questions

When is a separate latch assembly the relevant purchase?

Inspect the cap and tank mount first. If the latch is the identified repair, the linked chrome assembly provides a latch, return spring, mounting pin and C-clip; confirm the retained mechanism before choosing it instead of a larger cap package.

Does the custom billet cap include its matching latch?

The latching mechanism is separately purchased. Include the intended latch in the order plan and compare its hardware with the tank, rather than treating the billet cap’s flange and screw as a complete latch assembly.

What if the tank fitting does not match M16 × 1.5?

Identify the fitting required by that tank and obtain the appropriate petcock. The offered reference cannot override a different actual connection, and the motorcycle’s model designation does not resolve a tank changed during previous work.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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