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1972 Honda CL450K5 Engine Parts

An engine order for a 1972 Honda CL450K5 is easier to check when it follows a written repair list. Separate sealing work, valve replacement and small retaining parts, then identify the engine components actually fitted before choosing from this range.

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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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1972 Honda CL450K5 · Engine Parts Buying guide

Build an assembly-by-assembly engine order

Start with the joints and components that inspection has identified. The available oil-seal kit, individual valves and custom drain plug each provide different information for checking the order against your engine.

Parts to consider

Honda CB Joker Machine Magnetic Oil Drain Plug ~ Replaces 90013-312-000 Joker Machine magnetic drain plugSupplied with an O-ring. Product dimensions include M33.7 × 1.5 mm threads and a 45 mm outside diameter.View part Honda CB Special Oil Filter Rotor Washer ~ Replaces 90481-292-000 Special angled rotor washer16 mm oil-filter rotor washer, identified by replacement reference 90481-292-000.View part Honda CB Front Sprocket Lock Plate Set ~ Replaces 23811-292-000 Front sprocket retaining setOne lock plate with two bolts; plate reference 23811-292-000 and bolt reference 92101-06016-0A.View part

Related parts: Seven-piece engine seal kit · Individual intake valve · Individual exhaust valve

Use detailed contents where they exist

The linked oil-seal kit lists seven entries with dimensions and replacement references. Use that itemized list to check the sealing work in hand. The linked intake and exhaust valves are sold individually, so record their positions and quantities on separate order lines.

Check access around replacement hardware

The magnetic drain plug projects 19 mm from the case and uses a 19 mm socket. Compare both working access and surrounding clearance before choosing it. For sprocket retention, the featured plate package already contains two bolts; account for those when preparing the hardware order.

Buying questions

What should I check if the frame and engine came from different bikes?

Identify the engine and the particular covers, head or cases being serviced. Use that information with the part references and package contents; the frame’s model designation alone cannot resolve changes made during previous repairs.

Can an overhaul gasket set replace the separate oil seals?

Check both lists against the opened joints. The oil-seal kit has seven specified seals, while the overhaul products do not provide matching itemized contents. Confirm overlap before assuming one purchase covers the other.

Should the magnetic plug be chosen only by its thread?

Also allow for its 45 mm outer diameter, 19 mm case projection and socket access. These are dimensions of the offered plug, so compare them with the space on the engine you are working on.

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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