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1971 Honda CB450K Cap Repairs, Latches & Tank Mount Hardware

Decide which part of the filler-cap arrangement needs renewal on your 1971 CB450K: the cap body, rubber seal or latch hardware. Their listed contents differ. Compare the tank and retained pieces, then choose mounting cushions or emblem hardware from those separate attachment points.

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Currently viewing Gas Tanks, Caps, Petcocks & Parts

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB rear fuel tank holder rubber 17613-292-000

Honda CB Rear Fuel Tank Holder Rubber ~ Replaces 17613-292-000

$14.95 USD
02-6535
Secure your fuel tank at the rear with this Rear Fuel Tank Holder Rubber, a direct replacement for OEM #17613-292-000. One used per bike,...
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...
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Honda CB1000 CB900 CB750 fuel tank emblem clamp nut 87311-634-600

Honda CB Fuel Tank Emblem Clamp Nut ~ Replaces 87311-634-600

$6.25 USD
99-5267
Secure your fuel tank emblem properly with this Fuel Tank Emblem Clamp Nut, designed as a direct replacement for the original Honda hardware. This...
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...
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1971 Honda CB450K · Gas Tanks, Caps, Petcocks & Parts Buying guide

Choose a cap package or a smaller sealing repair

The chrome cap lists a gasket and hinge pin with E-clip. The matte-black cap additionally names its latch assembly. A separate seal serves a retained cap, and the chrome latch package names its own spring, mounting pin and C-clip.

Parts to consider

Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310 Chrome cap, gasket and hinge pinChrome filler cap referencing Honda 17510-323-310, supplied with gasket and hinge pin with E-clip. Match the fitted tank’s filler attachment. A latch assembly is not itemized among this cap’s contents.View part Honda CB Gas Cap Rubber Seal ~ Replaces 17525-300-000 Replacement cap sealing rubberSeal referencing Honda 17525-300-000 and listed for the 1971 CB450K. Compare the old seal and cap assembly directly. Choose this component when the cap is retained instead of assuming a complete cap package is needed.View part Honda CB Gas/Fuel Tank Cap Latch Assembly Chrome latch with spring and pinLatch package naming chrome latch, return spring, mounting pin and C-clip. Compare the latch and its mounting on the cap retained. These components address the latch repair rather than supplying a whole filler cap.View part

Related parts: Matte-black cap with latch parts · Front cushion purchase quantities · Emblem attachment retainers

Check the latch package as well as its finish

Standard chrome and black latch listings name a mounting pin and C-clip with the latch and return spring. The Joker Machine black latch instead lists an alloy screw and nut. Check the chosen attachment hardware against the cap being retained; finish alone does not identify the package contents.

Check the tank beyond the filler cap

The petcock requires an M16 × 1.5 outlet-thread check on the tank being used. Front cushions are sold individually, with two stated per bike. Emblem retainers also sell individually but serve another attachment. Inspect those locations instead of assuming a cap purchase renews the other tank fittings.

Questions to help choose the repair parts

How can I avoid ordering latch parts already included with a cap?

Read the chosen cap’s contents. The matte-black assembly expressly includes latch, spring, latch pin and C-clip, while the chrome cap description lists gasket and hinge pin with E-clip without itemizing a latch assembly. Decide on a separate latch from that comparison.

Which reference should I check when keeping the cap and renewing its seal?

The separate rubber seal uses Honda reference 17525-300-000. Compare it with the retained cap and old seal, particularly if the cap or tank changed during restoration. The listed model application cannot establish every aftermarket cap’s sealing pattern.

Does an individual front cushion cover all tank-support rubber?

It identifies the front cushion with reference 17611-283-010. The listing states two used per bike and sold each. Count those front positions and assess other support locations separately rather than treating one cushion as a complete tank-mounting set.

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