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1970 Honda CB450K Engine Sealing, Valves & Drive Hardware

Build an engine order for your 1970 Honda CB450K around the components the work actually needs. Sealing sets, individual valves and drive parts serve separate jobs. Record the fitted engine, identify removed pieces and compare package contents before choosing replacements.

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Honda motorcycle parts

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

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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1970 Honda CB450K · Engine Buying guide

Turn the service findings into separate purchases

An overhaul gasket set does not establish oil-seal coverage or a complete engine rebuild package. The choices also include individual valves, cam chains and front-drive hardware. Keep the specifications and purchasing quantities with each component.

Parts to consider

Honda CB Athena Overhaul Gasket Set Athena engine overhaul gasketsEngine gasket set listing CB450K application for 1968–1974. Check the shapes needed for the planned work; a detailed supplied-piece inventory is not stated.View part 1968-76 Honda CB450 / CL450 / CB500T Engine Oil Seal Kit Seven-piece engine oil-seal kitSeven seals identified by separate Honda references and dimension entries. Use both details to compare the particular seals required.View part Honda CB Intake Valve ~ Replaces 14711-292-000 Individual intake valveIntake valve referenced to Honda 14711-292-000. Supplied individually, so choose quantity from the inspected intake positions.View part

Related parts: Individual exhaust valve by Honda reference · 128-link D.I.D 219FTSS engine cam chain · Front-sprocket lock plate and two bolts

Keep set contents attached to the job

Write a separate requirement for flat gaskets, engine oil seals and the small cylinder-stud seal. The names describe different sealing parts, and the gasket-set descriptions do not confirm a common complete contents list. Check coverage against the joints and components involved in your work.

Distinguish the two drive systems

Engine cam-chain designation and final-drive sprocket specification belong on separate lines of the order. The 128-link cam chains are engine components; the 15-tooth sprocket and its lock plate concern the front final drive. A shared motorcycle application does not replace those component checks.

Buying questions

How can I avoid overlooking parts when ordering for engine work?

List the components identified by inspection, then check each product against that list. Separate gasket coverage, oil-seal references, intake and exhaust valve quantities, and drive specifications. The selection does not describe one purchase containing all those requirements.

What changes if the fitted engine is different from the original?

Choose from the installed engine identity and removed components. In particular, keep the five-speed condition on the restricted gasket set and compare the required valve and chain references. A motorcycle-year heading cannot establish which engine a previous owner fitted.

Should I order every valve because the engine is apart?

Base the quantity on the cylinder-head assessment. Intake and exhaust valves are separate individual purchases with different references. The descriptions do not determine the condition of your head or establish that every position requires replacement.

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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