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1971 Honda CB450K Engine Parts for a Planned Service Order

For engine work on a 1971 Honda CB450K, start with the component identified by inspection rather than a broad rebuild label. A gasket set, individual valve, drain plug or chain supplies a different part of the job. Check each requirement and purchasing unit.

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Honda motorcycle parts

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Honda CB750 CB650 CB550 front sprocket lock plate set 23811-292-000

Honda CB Front Sprocket Lock Plate Set ~ Replaces 23811-292-000

$5.95 USD
49-0782
Replace your front sprocket lock plate with this Front Sprocket Lock Plate with 2 lock plate bolts. Always good to replace these when installing...
New
Honda CB750 CB550 CB500 rear shock swingarm bushing 40548-268-000

Honda CB Rear Shock Swingarm Bushing ~ Replaces 40548-268-000

$6.20 USD
28-6918
Rear shock swingarm bushing designed to replace the original Honda component, matching OEM reference 40548-268-000. Fits between the shock and swingarm to provide proper...
New
Honda CB500 CB450 CL450K1 CL450K2 CL450K3 overhaul gasket set

Honda CB Overhaul Gasket Set

$64.95 USD
18-0098
Rebuild your CB500T or CB450/CL450 engine with this Engine Overhaul Gasket Set.Note: fits 5-speed CB450K models only.Key Features• Engine overhaul gasket set• For 5-speed...
New
Honda CB500 CB450 CL450K0 CL450K2 CL450K3 intake valve 14711-292-000

Honda CB Intake Valve ~ Replaces 14711-292-000

$26.95 USD
28-6920
Restore proper engine performance with this Intake Valve, designed as a direct replacement for the original Honda component. This valve replaces OEM part number...
New
Honda CB450 CL450 CB500T engine oil seal kit with 7 seals 91202-283-013

1968-76 Honda CB450 / CL450 / CB500T Engine Oil Seal Kit

$21.95 USD
01-9926
Refresh critical engine sealing points with this Engine Oil Seal Kit (7 Pieces), designed to replace common oil seals used in the engine assemblies...
New
Honda CB500 CB450 CL450K0 CL450K2 CL450K3 exhaust valve 14721-292-010

Honda CB Exhaust Valve ~ Replaces 14721-292-010

$26.95 USD
28-6919
Restore proper engine performance with this Exhaust Valve, designed as a direct replacement for the original Honda component. This valve replaces OEM part numbers...
New
Honda CB550 CB500 CB450 CL450K0 drive chain adjuster w nut and bolt

Honda CB Drive Chain Adjuster with Nut & Bolt

$24.95 USD
99-4854
Upgrade or restore your classic Honda motorcycle’s drive system with this Drive Chain Adjuster with Nut and Bolt — designed to keep your rear...
Honda CB750 CB550 drive chain adjuster screws black joker machine 90119-283-000

Honda CB Drive Chain Adjuster Screws ~ Black ~ Joker Machine ~ Replaces 90119-283-000

$59.95 USD
73-1059
Refresh your drive chain adjusters with these Joker Machine Brand Black Custom Type Drive Chain Adjuster Screws, set of 2, with gold-cadmium-plated nuts. Replaces...
New
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Honda CB500 CB450 joker machine magnetic oil drain plug 90013-312-000

Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000

$64.95 USD
12-0108
Catch engine debris between oil changes with this Joker Machine Magnetic Oil Drain Plug with O-ring, replacing OEM #90013-312-000. High-quality 6061 billet aluminum body...
New
Honda CB500 CB450 CL450K0 front sprocket 15 tooth 23801-348-690

Honda CB Front Sprocket ~ 15 Tooth ~ Replaces 23801-348-690

$23.95 USD
99-4807
15 tooth front sprocket designed as a direct replacement for the original Honda component, matching OEM reference 23801-348-690. Plays a key role in final...
Honda CB500 CB450 CB400 CB360 CB350 cylinder head gasket 12909-428-003

Honda CB Cylinder Head Gasket ~ Replaces 12909-428-003

$2.95 USD
73-1186
Restore top-end sealing performance with this high-quality Cylinder Head Gasket. Designed to match OEM specifications, this gasket ensures a perfect fit and proper sealing...
Honda CB500 CB450 CB360 special oil filter rotor washer 90481-292-000

Honda CB Special Oil Filter Rotor Washer ~ Replaces 90481-292-000

$9.46 USD
29-7034
Replace your oil filter rotor washer with this Special Angled Oil Filter Rotor Washer (16mm), replacing OEM #90481-292-000.Key Features• Special angled oil filter rotor...
Honda CB500 CB450 CL450 cam chain 219T x 128 14401-283-003

Honda CB500 / CB450 / CL450 Cam Chain ~ 219T x 128 ~ Replaces 14401-283-003

$99.95 USD
52-3034
Replace your CB500T or CB450 cam chain with this Cam Chain 219T x 128, replacing OEM #14401-283-003. D.I.D (Daido) brand. Pitch .3061, peanut side...
Honda CB500 CB450 CL450 cam chain 219FTSS x 128 14401-283-003

Honda CB500 / CB450 / CL450 Cam Chain ~ 219FTSS x 128 ~ Replaces 14401-283-003

$99.95 USD
52-4012
Replace your CB500T or CB450 cam chain with this Cam Chain 219FTSS x 128, replacing OEM #14401-283-003. D.I.D (Daido) brand. Pitch .3061, stepped parallel...
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Honda CB450 CL450K2 CL450K3 CL450K4 CL450K5 Athena overhaul gasket set

Honda CB Athena Overhaul Gasket Set

$99.95 USD
18-0297
Rebuild your CB450K or CL450K engine with this Athena Overhaul Engine Gasket Set. Athena of Italy is an original-equipment supplier to Yamaha, Honda, Kawasaki,...
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1971 Honda CB450K · Engine Buying guide

Choose the component first, then check what comes with it

The engine choices range from gasket sets and individual valves to sealing and drive hardware. Their descriptions supply different levels of detail. Match the fitted engine and required component before treating a set as coverage for the entire repair.

Parts to consider

Honda CB Overhaul Gasket Set Overhaul gaskets with a five-speed conditionEngine gasket set expressly restricted to five-speed CB450K engines. Confirm the fitted engine and gasket coverage required before choosing it.View part Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000 Magnetic drain plug with O-ringJoker Machine plug referenced to Honda 90013-312-000, with O-ring included. Check its M33.7 × 1.5mm thread and stated body clearance.View part Honda CB500 / CB450 / CL450 Cam Chain ~ 219T x 128 ~ Replaces 14401-283-003 D.I.D 219T × 128 engine cam chain128-link engine cam chain with listed peanut side plates and Honda reference 14401-283-003. A clip link is included.View part

Related parts: Seven-piece engine oil-seal kit · Exhaust valve supplied individually · 15-tooth front final-drive sprocket

Separate engine sealing from complete rebuild coverage

Flat engine gaskets, oil seals and the small cylinder-stud seal identify different requirements. Compare the opened joints and removed components with the relevant product details. Neither the overhaul label nor a seven-seal count establishes a complete package of every gasket, seal and other rebuilding part.

Keep component specifications with the order line

Write down the intake or exhaust valve reference, full cam-chain designation, and front-sprocket tooth count separately. These choices belong to different engine or drive positions. If a previous owner changed the engine or drive arrangement, confirm the fitted components before relying on the motorcycle heading.

Buying questions

How can I keep a larger engine order organized?

Give each inspected component its own requirement: gasket coverage, seal reference, valve position, chain designation or drive hardware. Compare that line with the exact supplied contents. An engine category heading does not mean the separate products form one complete rebuild kit.

What should I check before choosing an overhaul gasket set?

Identify the fitted engine and gasket shapes needed by the work. One set explicitly requires a five-speed CB450K engine. Neither description gives a complete piece inventory, so confirm coverage before assuming either contains the separate oil seals or small stud seal.

What is included with the listed cam chains?

Each D.I.D cam chain lists 128 links and an included clip link. The 219T and 219FTSS descriptions specify different side-plate forms. Tensioners, guides and other engine parts are not itemized as supplied; identify those needs separately.

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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