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1977 Honda CB550F Gaskets & Oil Seals

Find the source of an engine leak on your 1977 Honda CB550F before choosing sealing parts. Flat cover gaskets, shaft seals and tappet-cap O-rings belong to different locations. Compare an individual replacement with the Athena gasket sets and separate nine-piece seal kit.

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Currently viewing Gaskets & Oil Seals & Engine Hardware

Honda motorcycle parts

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

Honda CB750 CB550 CB500 CB400 CB350 point plate gasket 30372-300-300

Honda CB Point Plate Gasket ~ Replaces 30372-300-300

$7.50 USD
18-7010
Replace your Contact Point Plate Cover Gasket with this Point Plate Gasket, replacing OEM #30372-300-300. Broad fitment across the SOHC CB750, CB500K/CB550 family, and...
Honda CB750 CB550 CB500 CB350 tach drive oil seal 4.8 x 14.5 x 4 91256-096-651

Honda CB750 / CB550 / CB500 / CB350 Tach Drive Oil Seal ~ 4.8 x 14.5 x 4 ~ Replaces 91256-096-651

$4.95 USD
73-0963
Replace your tach drive oil seal with this Tach Drive Oil Seal, 4.8 x 14.5 x 4, replacing OEM #91256-096-651. High-quality, made in Japan.Key...
Honda CB750 CB550 valve tappet cover gasket (set 8) 91302-001-020

Honda CB Valve Tappet Cover O-Ring (Set/8) ~ Replaces 91302-001-020

$15.95 USD
18-7069
Replace your valve tappet cover O-rings with this Valve Tappet Cover O-Ring Set of 8, replacing OEM #91302-001-020. Designed for stock-type valve tappet covers...
Honda CB750 CB550 CB650 cylinder head nut cover 91318-300-013

Honda CB750 / CB550 / CB650 Cylinder Head Nut Cover

$3.74 USD
01-0137
Restore the clean look of your cylinder head with this Rubber Cylinder Head Nut Cover, a replacement for OEM Ref. #91318-300-013. Fits all 1969-78...
Honda CB750 CB550 CB500 CB350 kickstart oil seal 18 x 29 x 7 91204-286-003

Honda CB750 / CB550 / CB500 / CB350 Kickstart Oil Seal ~ 18 x 29 x 7 ~ Replaces 91204-286-003

$4.95 USD
73-0962
Replace your kickstart oil seal with this Kickstart Oil Seal, 18 x 29 x 7, replacing OEM #91204-286-003. High-quality, made in Japan.Key Features• Kickstart...
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Honda CB550 CB500 CB400 CB350 engine primary drive rubber set 8 23114-323-000

Honda CB550 / CB500 / CB400 / CB350 Engine Primary Drive Rubber Set/8 ~ Replaces 23114-323-000

$32.95 USD
28-6922
Restore smooth power transfer inside the engine with this Engine Primary Drive Rubber Set (Set of 8), designed to replace worn or deteriorated original...
New
Honda CB550 engine oil seal kit with clutch crankshaft countershaft and tach seals

Honda CB550 Engine Oil Seal Kit

$28.95 USD
01-0149
Tackle your CB550 engine rebuild with confidence using this 9-piece Engine Oil Seal Kit. Covers every major oil seal your mid-'70s CB550 needs in...
Honda CB550F CB550K overhaul gasket set

1974-78 Honda CB550F / CB550K Overhaul Gasket Set

$124.95 USD
18-0439
Rebuild your CB550 engine with this Overhaul Engine Gasket Set.Key Features• Overhaul engine gasket setFitment / Compatibility• Honda CB550K (1974‑78)• CB550F (1975‑77) SupersportPart Number:...
Honda CB750 CB650 cylinder sleeve o-ring gasket set 91304-286-000

Honda CB Cylinder Sleeve O-Ring Gasket Set ~ Replaces 91304-286-000

$4.50 USD
18-7068
Replace your cylinder sleeve O-rings with this Cylinder Sleeve O-Ring Set of 4, replacing OEM #91304-286-000.Key Features• Cylinder sleeve O-rings, 4 per set• Replaces...
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Honda CB550F CB550K CB500K alternator cover gasket 11691-323-306

1971-78 Honda CB550F / CB550K / CB500K Alternator Cover Gasket ~ Replaces 11691-323-306

$9.86 USD
18-6999
Replace your CB500K or CB550 alternator cover gasket with this Alternator Cover Gasket, replacing OEM #11691-323-306.Key Features• Alternator cover gasket• Replaces OEM #11691-323-306• Honda...
Honda CB750 CB650 CB550 CB500 crank seal 30 x 42 x 8 91201-300-003

Honda CB Crank Seal ~ 30 x 42 x 8 ~ Replaces 91201-300-003

$7.00 USD
73-0960
Replace your crank seal with this Crank Seal, 30 x 42 x 8, replacing OEM #91201-300-003. High-quality, made in Japan.Note: please reference the OEM...
Honda CB550F CB550K CB500K cylinder head gasket 12251-374-306

1971-78 Honda CB550F / CB550K / CB500K Cylinder Head Gasket ~ Replaces 12251-374-306

$69.95 USD
18-6996
Replace your CB500K or CB550 cylinder head gasket with this Cylinder Head Gasket, replacing OEM #12251-374-306.Key Features• Cylinder head gasket• Replaces OEM #12251-374-306• Honda...
1976-78 Honda CB550K / CB550F Cylinder Base Gasket ~ Replaces Honda OEM 11394-390-306

1976-78 Honda CB550K / CB550F Cylinder Base Gasket ~ Replaces Honda OEM 11394-390-306

$17.41 USD
18-6998
Honda CB550F CB550K Clutch Cover Gasket - Replaces Honda OEM 11394-390-306. This clutch cover gasket seals the clutch cover to the engine side cover...
Honda CB550F CB550K CB500K cylinder head cover gasket 12391-323-000

1971-78 Honda CB550F / CB550K / CB500K Cylinder Head Cover Gasket ~ Replaces 12391-323-000

$41.95 USD
18-6997
Replace your CB500K or CB550 cylinder head cover gasket with this Cylinder Head Cover Gasket, replacing OEM #12391-323-000.Key Features• Cylinder head cover gasket• Replaces...
Honda CB650 CB550 CB500 cylinder base gasket 12191-426-306

Honda CB650 / CB550 / CB500 Cylinder Base Gasket ~ Replaces 12191-426-306

$18.50 USD
18-6993
Replace your CB650 or CB500/CB550 cylinder base gasket with this Cylinder Base Gasket, replacing OEM #12191-426-306.Key Features• Cylinder base gasket• Replaces OEM #12191-426-306• Honda...
Honda CB550F CB550K Athena overhaul gasket set

1974-78 Honda CB550F / CB550K Athena Overhaul Gasket Set

$179.95 USD
18-0198
Rebuild your CB550 engine with this Athena Overhaul Engine Gasket Set. Athena of Italy is an original-equipment supplier to Yamaha, Honda, Kawasaki, Suzuki, and...
Honda CB550F CB550K CB500K Athena gasket set (top end set only)

1971-78 Honda CB550F / CB550K / CB500K Athena Gasket Set (Top End Set Only)

$144.95 USD
18-0435
Freshen up the top end of your CB500 or CB550 with this Athena Top End Gasket Set. Athena of Italy is an original-equipment supplier...
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1977 Honda CB550F · Gaskets & Oil Seals Buying guide

Match the sealing part to the joint being opened

A leak around a cover does not identify every seal needed for a rebuild. Use the repair location, removed parts and package contents to choose individual sealing pieces or the appropriate set without guessing coverage.

Parts to consider

1971-78 Honda CB550F / CB550K / CB500K Athena Gasket Set (Top End Set Only) Athena top-end gasket setTop-end service set for the listed CB550F application; compare the pictured components with the job.View part 1974-78 Honda CB550F / CB550K Athena Overhaul Gasket Set Athena overhaul gasket setOverhaul engine gasket set with explicit CB550F 1976–77 application; compare the shown contents before ordering.View part Honda CB550 Engine Oil Seal Kit Nine-piece CB550 oil seal kitSeparate seal kit with listed clutch, gearshift, crankshaft, shaft and tach-drive sealing pieces.View part

Related parts: Alternator cover gasket · Cylinder head cover gasket · Stock tappet-cap O-ring set of eight

Compare gasket sets with the planned disassembly

The Athena top-end set and overhaul set offer different starting points for engine gasket work. Check the pictured or stated contents against the joints that will be opened. The nine-piece engine seal kit is a separate option; neither a gasket-set name nor a broad application promises every sealing part needed.

Choose an individual gasket for a smaller repair

Separate alternator-cover and cylinder-head-cover gaskets are available for their stated locations. Match the reference and outline with the fitted part, especially after engine or cover changes. For tappet caps, the eight-piece O-ring set is restricted to OEM-type covers; a custom finned cap has its own supplied gasket.

Common buying questions

Does the nine-piece kit include the Athena gaskets?

It is a separate engine oil seal kit with nine listed sealing pieces. The Athena products are gasket sets. Compare their contents with the repair plan and order the appropriate scopes rather than treating both product types as the same package.

Can I order only a cylinder-head-cover gasket?

Yes. The related cylinder-head-cover gasket references 12391-323-000 and is sold as an individual replacement. Compare its outline and application with the installed engine before ordering, then inspect any other seals disturbed during that cover repair.

Which seals should I buy for a finned tappet cap?

The aftermarket finned cap includes its stated gasket. The separate eight-piece O-ring set is for OEM-type caps. Identify the cap design first instead of assuming a stock-cap O-ring and custom-cap gasket have the same application.

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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Parts categories for 1977 Honda CB550F Supersport

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