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1981 Honda CB400TB Engine Parts

An oil service, a leaking cover and an internal cam-drive repair call for different parts on the 1981 Hawk. Start with the joint or assembly that needs attention, then choose between a single service item and a broader gasket selection.

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Honda motorcycle parts

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

Honda CB1100 CB1000 CB900 CB750 oil filter washer set 15414-300-000

Honda CB Oil Filter Washer Set ~ Replaces 15414-300-000

$7.95 USD
15-0039
Fit oil filter washers with this Oil Filter Washer 5-pack, replacing OEM #15414-300-000. Used with original-type paper oil filter elements. Exceptionally broad fitment across...
Honda CB1100 CB1000 CB900 CB750 CB450 magnetic oil drain plug

Honda CB Magnetic Oil Drain Plug

$10.95 USD
15-0014
Catch steel debris on oil changes with this Magnetic Oil Drain Plug, 14mm diameter x M1.5, replacing OEM #92800-14000. Fits the CB750A Hondamatic, full...
Honda CB1100 CB1000 CB900 CB750 oil filter washer each 15414-300-000

Honda CB Oil Filter Washer ~ Each ~ Replaces 15414-300-000

$2.95 USD
15-0042
Oil filter washer designed to replace the original Honda component, matching OEM reference 15414-300-000. Used to create a proper seal at the oil filter...
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Honda CB1100 CB1000 CB900 CB750 drain plug washer

Honda CB1100/CB1000/CB900/CB750 Drain Plug Washer

$1.75 USD
15-0000
Replace your oil drain plug washer with this 14mm x 20mm x 1mm Drain Plug Washer. Broad fitment across the CB750A Hondamatic, the full...
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...
Honda CB750 CB650 CB550 tappet adjuster screw and nut set 90012-426-000

Honda CB Tappet Adjuster Screw & Nut Set ~ Replaces 90012-426-000

$4.61 USD
49-0784
Replace your tappet adjuster screws and nuts with this Tappet Adjuster Screw & Nut Set. Each set includes one tappet adjuster screw and one...
Honda CB450 CB400 oil filter 15412-413-005

1978-86 Honda CB450 / CB400 Oil Filter ~ Replaces 15412-413-005

$8.95 USD
15-0007
Service your CB400 or CB450 with this Stock-Type Oil Filter Element (paper filter), replacing OEM #15412-413-005 / #154A1-413-005 / #154A1-MA6-000.Key Features• Stock-type paper oil...
New
Honda CB400 CB450 exhaust valve 14721-413-000

Honda CB400 / CB450 Exhaust Valve ~ Replaces 14721-413-000

$19.95 USD
01-9962
Restore proper engine performance with this Exhaust Valve, designed as a direct replacement for the original Honda component. This valve replaces OEM part number...
Honda CB750 CB450 CB400 CB360 CB77 valve guide clip 12211-250-310

Honda CB Valve Guide Clip ~ Replaces 12211-250-310

$1.95 USD
73-0939
Replace your valve guide clip with this Valve Guide Clip, replacing OEM #12211-250-310.Sold each, order the quantity you require.Key Features• Valve guide clip• Replaces...
New
Honda CB400 CB450 intake valve 14711-235-010

Honda CB400 / CB450 Intake Valve ~ Replaces 14711-235-010

$19.95 USD
01-9961
Restore proper engine performance with this Intake Valve, designed as a direct replacement for the original Honda component. This valve replaces OEM part number...
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Honda CB400 Athena overhaul gasket set

1978-81 Honda CB400 Athena Overhaul Gasket Set

$119.95 USD
18-0103
Rebuild your CB400 engine with this Athena Overhaul Engine Gasket Set. Athena of Italy is an original-equipment supplier to Yamaha, Honda, Kawasaki, Suzuki, and...
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Honda CB450 CB400 valve cover gasket 12328-413-830

1978-86 Honda CB450 / CB400 Valve Cover Gasket ~ Replaces 12328-413-830

$31.95 USD
12-1014
Replace your CB400 or CB450 valve cover gasket with this Athena Brand Valve Cover Gasket, replacing OEM #12328-413-830. Fits the full CB400A/TI/TII/T range plus...
Honda CB400 cam chain tensioner 14500-413-000

Honda CB400 Cam Chain Tensioner ~ Replaces 14500-413-000

$34.95 USD
07-0193
Replace a worn cam chain tensioner on your CB400 with this Cam Chain Tensioner, replacing OEM #14500-413-000. Fits the CB400A, CB400TI, CB400TII, and CB400T,...
Honda CB400 CB450 silent cam chain a 412H x 110 14401-MR4-901

Honda CB400 / CB450 Silent Cam Chain A 412H x 110

$89.95 USD
01-0206
Keep your CB400 or CB450 running quiet and in spec with this Silent Cam Chain A, 412H x 110 links. High-quality construction made in...
New
Honda CB450 CB400 CB360 CB350 drive chain adjuster with nut and bolt 40543-471-000

Honda CB Drive Chain Adjuster with Nut & Bolt ~ Replaces 40543-471-000 / 40543-312-010

$24.95 USD
99-4856
Upgrade or restore your classic Honda motorcycle’s rear drive system with this Drive Chain Adjuster with Nut and Bolt — a quality replacement designed...
Honda CB450 CB400 oil filter bolt 15420-413-000

1978-86 Honda CB450 / CB400 Oil Filter Bolt ~ Replaces 15420-413-000

$28.95 USD
15-3021
Fit the CB400 or CB450 oil filter bolt with this Oil Filter Bolt, replacing OEM #15420-413-000.Key Features• Oil filter bolt• Replaces OEM #15420-413-000• Honda...
Honda CB400 CB450 CB125 valve stem seal 12208-413-003

Honda CB400 / CB450 / CB125 Valve Stem Seal

$3.10 USD
01-0128
Stop top-end oil loss with this Valve Stem Seal, a replacement for OEM #12208-413-003 / #12209-KL4-005 / #12209-428-003. Fits a range of smaller-displacement Hondas,...
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1981 Honda CB400TB · Engine Buying guide

Build the parts order around the engine work

The useful choices here range from a replaceable paper oil filter to engine gaskets and an internal silent cam chain. Decide how far the engine will be opened before assembling the order.

Parts to consider

1978-86 Honda CB450 / CB400 Oil Filter ~ Replaces 15412-413-005 Paper oil-filter elementStock-type paper element for the CB400T filter housing, replacing the 15412-413-005 reference family.View part 1978-81 Honda CB400 Athena Overhaul Gasket Set Athena engine gasket setOverhaul gasket selection for the CB400T engine. Match the individual gaskets to the joints being opened.View part Honda CB400 / CB450 Silent Cam Chain A 412H x 110 Silent cam chainJapanese-made 412H × 110-link chain for the CB400T camshaft drive.View part

Related parts: Separate valve-cover gasket · Cam-chain tensioner

Keep the service order focused

For an oil change, inspect the filter housing, bolt and drain fitting before ordering. A filter element renews the filtration component; it does not repair damaged housing threads or replace the surrounding hardware. Plan those repairs separately when inspection finds a problem.

Allow for the work behind the symptom

A leaking cover may need a single correctly shaped gasket. More extensive disassembly can involve several joints, making an overhaul set worth comparing with the repair plan. Cam-drive noise also needs diagnosis of the chain, tensioner and surrounding parts before buying a chain alone.

Buying questions

Which gasket option suits a valve-cover leak?

The separately linked valve-cover gasket targets that joint. First check the cover and sealing surfaces; choose the wider overhaul set only when the planned work opens additional engine joints.

Is the silent chain for the rear wheel?

No. The 412H × 110-link chain is an internal camshaft-drive part. Rear-wheel chain adjustment is covered by the drive-chain hardware route, and requires a separate assessment of the fitted chain and sprockets.

Does an overhaul gasket set replace every engine seal?

Do not assume that from the set name. Compare its current contents with the joints and seals involved in your repair, especially molded seals and separately serviced items, before dismantling the engine.

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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