VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1972 Honda CB500K Engine Gaskets and Oil Seals

For sealing work on a 1972 Honda CB500K, the first decision is which joint or shaft needs attention. A cylinder-head gasket, head-cover gasket and engine oil seal serve different locations; choose individual replacements or a set that matches the work planned.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
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...
New
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...
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...
Sold out
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...
New
Honda CB500K engine oil seal kit with 9 seals

1971-73 Honda CB500K Engine Oil Seal Kit

$27.95 USD
01-9952
Seal up your CB500K engine rebuild with this 9-piece Engine Oil Seal Kit. A complete bundle matched specifically to the 1971-73 CB500K, saving you...
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 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...
Sold out
Honda CB500K overhaul gasket set

1971-73 Honda CB500K Overhaul Gasket Set

$129.95 USD
18-0438
Rebuild your CB500K engine with this Overhaul Engine Gasket Set.Key Features• Overhaul engine gasket setFitment / Compatibility• Honda CB500K (1971‑73)Part Number: 18-0438
Honda CB500K Athena overhaul gasket set

1971-73 Honda CB500K Athena Overhaul Gasket Set

$219.00 USD
18-0192
Rebuild your CB500K engine with this Athena Overhaul Engine Gasket Set. Athena of Italy is an original-equipment supplier to Yamaha, Honda, Kawasaki, Suzuki, and...
compare

1972 Honda CB500K · Gaskets and seals Buying guide

Match the seal to its location

Individual head, base and cover gaskets are offered alongside Athena sets and a nine-piece oil-seal kit. Use the old part, joint outline and stated Honda reference to narrow the choice before comparing packages.

Parts to consider

1971-78 Honda CB550F / CB550K / CB500K Cylinder Head Gasket ~ Replaces 12251-374-306 Cylinder-head gasketListed against Honda reference 12251-374-306 for the CB500K, this gasket serves the cylinder-head joint. It is a different part from the gasket around the removable head cover.View part 1971-78 Honda CB550F / CB550K / CB500K Athena Gasket Set (Top End Set Only) Athena top-end gasket setThe current listing identifies this as a top-end-only set and directs you to the photographed contents. Confirm any particular gasket you need rather than extending the package to lower-engine work.View part 1971-73 Honda CB500K Engine Oil Seal Kit Nine specified engine oil sealsThe description lists nine seals, including crankshaft, crankcase, gearshift, mainshaft, tach-drive and countershaft locations. Compare that stated list with your job; gasket coverage is a separate decision.View part

Related parts: Cylinder-base gasket · Cylinder-head cover gasket · Alternator-cover gasket

Separate joint gaskets from shaft seals

A paper or formed joint gasket and a shaft oil seal are not interchangeable ways to fix a leak. Locate the source before buying. Keep the head, base and outer-cover joints separate from the shaft positions named in the oil-seal kit description.

Check the breadth of a gasket set

Athena top-end and overhaul sets are listed separately. The top-end listing points to its photo; the overhaul listing does not provide a complete itemized contents list. If a particular gasket is essential to your repair, confirm its inclusion or select the appropriate individual part.

Common questions

Is the head-cover gasket the cylinder-head gasket?

No. The head-cover gasket is listed against 12391-323-000, while the cylinder-head gasket carries 12251-374-306. Match the actual joint and old gasket rather than relying on similar names.

Which seal locations does the nine-piece kit cover?

It contains two crankshaft seals, left and right crankcase seals, gearshift-drum and spindle seals, mainshaft, tachometer-drive and countershaft seals. Gaskets and O-rings are separate; compare the named locations with the engine work before choosing the kit.

When should I compare the top-end set with individual gaskets?

The Athena set is described for top-end work and includes the photographed contents. Compare those contents with the joints being opened. Individual head, head-cover, base and alternator-cover gaskets have their own references when specific replacements are needed.

Not sure which part you need?

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

Ask a fitment question
Parts categories for 1972 Honda CB500K Four

Your cart

×