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Motorcycle & ATV parts
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Kawasaki KZ400 Parts

Keep your Kawasaki KZ400 on the road with carburetor service parts, engine gaskets, brake components and fork seals. Choose your D, S, A Deluxe, B, C Special or H LTD model and year, then check the individual part’s fitment before ordering.

Kawasaki KZ motorcycle parts.

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Choose your Kawasaki KZ400 model

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In stock
Honda Kawasaki Motorcycle ATV Float Bowl Gasket 16019-024

Honda Kawasaki Motorcycle ATV Float Bowl Gasket - Reference: 16019-024

$6.51
20-5022
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Honda Kawasaki Motorcycle ATV Float Bowl Gasket - Reference: 16019-024. This float bowl gasket seals the carburetor bowl to the carburetor body. Replace a...
In stock
Kawasaki KZ400A KZ400D KZ400S Premium Carb Rebuild Kit

Kawasaki KZ400A KZ400D KZ400S Premium Carb Rebuild Kit

$18.50
48-1229
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Kawasaki KZ400A KZ400D KZ400S Premium Carb Rebuild Kit. This carburetor rebuild kit supplies the gaskets, O-rings, float-valve parts, and small service pieces needed to...
売り切れ
Honda Kawasaki Motorcycle Carb Diaphragm Rubber Genuine 16022-287-004

Honda Kawasaki Motorcycle Carb Diaphragm Rubber - Genuine Honda OEM 16022-287-004

$21.83
48-1985
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Genuine Honda Kawasaki Motorcycle Carb Diaphragm Rubber - OEM 16022-287-004. This carburetor diaphragm forms the flexible vacuum diaphragm used by the matching carburetor slide...
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Honda Kawasaki Yamaha Motorcycle Keihin Type Press-Secondary Main Jet #68 with O-Ring

Honda Kawasaki Yamaha Motorcycle Keihin Type Press-Fit Secondary Main Jet #68 with O-Ring

$5.92
48-1586
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Honda Kawasaki Yamaha Motorcycle Keihin Type Press-Fit Secondary Main Jet #68 with O-Ring. This main jet meters fuel through the carburetor main circuit at...
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About the Kawasaki KZ400

Find the right repair parts for your KZ400 twin, from the early D and S to the Deluxe and LTD.

Kawasaki Motorcycle Logo

The Kawasaki KZ400 family includes motorcycles with different brakes, gearboxes, carburetors and touring equipment. Early D models use a hydraulic front disc; the S uses a cable-operated front drum. The A Deluxe is a five-speed touring model, while the later B and H LTD have six-speed specifications. These differences matter when you buy service parts.

Choose parts by model, year and repair

Start with the complete model code, then the component you are repairing. The carburetor kit below covers A 1977–1978, D 1976 and S 1976–1977. Engine gasket sets have separate A and B applications, even where the years overlap. For brakes, identify the wheel position and whether the fitted assembly uses a cable or hydraulics.

Model differences that affect parts selectionKawasaki KZ400 model guide

Compare the details that affect parts selection, then confirm the application of each part for your motorcycle.

Reference models: 1974–1977

KZ400D · early standard

The original specification combines a SOHC twin, five-speed gearbox, electric starter and front disc brake.

Parts checkpoint: The featured carb kit lists 1976 only; master-cylinder kit coverage is broader.

Explore KZ400D parts

Reference models: 1975–1977

KZ400S · simplified twin

The S version uses a front drum brake and kick starting. Later S2/S3 equipment differs from the first S.

Parts checkpoint: The carb kit lists 1976–1977. Match the cable-operated brake lever to the S controls.

Explore KZ400S parts

Featured applications: 1977–1978

KZ400A · Deluxe

The A1/A2 specification adds a fairing, saddlebags and luggage rack to the five-speed twin.

Parts checkpoint: Use the A-specific gasket set; 1978 alone cannot select between A and B parts.

Explore KZ400A parts

Featured applications: 1978–1979

KZ400B · later standard

B1/B2 specification sheets identify a six-speed twin. The B2 has a front disc and rear drum.

Parts checkpoint: B-specific gasket, rear brake-shoe and air-filter applications are linked in its guide.

Explore KZ400B parts

Featured application: 1978

KZ400C · Special

The C1 sheet describes the improved S version with five gears, a two-into-one exhaust and swingarm needle bearings.

Parts checkpoint: Keep the C front-brake control separate from the B and H hydraulic-disc controls.

Explore KZ400C parts

Featured application: 1979

KZ400H · LTD

The H1 LTD has cast wheels, a six-speed gearbox and a front caliper that differs from the B.

Parts checkpoint: Its featured front pads are listed for KZ400H 1979; do not transfer that fitment to the B.

Explore KZ400H parts

Model codes and serial markingsKawasaki KZ400 identification

Record the complete frame stamping at the steering head and the engine number on the crankcase. An engine replacement can leave a motorcycle with frame and engine identities from different versions.

How to read this chart: These are starting entries transcribed from model specification sheets. They are not complete production ranges or a VIN decoder, and they do not establish part interchange. The trailing continuation mark is omitted.

KZ400 reference entriesConfirmed values only
Kawasaki KZ400 model, starting frame and starting engine entries
Model / reference entryStarting frame numberStarting engine number
1974 · KZ400DK4-00001K4E00001
1975 · (K)Z400DK4-013800K4E013844
1976 · (K)Z400-D3K4-044601K4E050601
1977 · (K)Z400-D4K4-065101K4E095101
1976 · KZ400-S2K4S-04601K4SE010701
1977 · KZ400-S3K4S-18101K4SE027101
KZ400-A1/A2 · combined entry, 1977 onwardKZ400A-500001K4E090950
1978 · (K)Z400-B1K4-077801K4E118001
1979 · (K)Z400-B2K4-099501K4E139801
1978 · KZ400-C1Not confirmedK4SE033701
KZ400-H1 LTD · combined 1979–1980 entryKZ400H-000101K4E152831

Some factory sheets combine more than one year, and some models have additional plant or market entries. The 1975 S starts and the C1 frame start are omitted because the available references disagree. No A2-only or H1 year-by-year range is inferred.

For a changed carburetor, front brake, fork or airbox, identify the fitted component as well as the bike. Photograph its markings and compare the product’s exact application before ordering.

Kawasaki KZ400 parts by repair

Choose the repair below, then compare the model, year and fitted component on the product page. Check the included pieces and quantity before ordering.

Customizing your KZ400?

For a café racer or a riding-position change, compare universal bars, grips and mirrors after identifying your stock controls.

Measure bar diameter, mirror threads, cable or hose reach and clearance. Universal parts may need modification and are not confirmed KZ400 fitment.

Why buy KZ400 parts from PartsNMore?

Supplying motorcycle parts since 2002. About PartsNMore.

Read customer reviews

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Items marked in stock are held in our warehouse.

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USA orders: $50 USD or more. Canada: over $50 CAD. Shipping details.

60-day returns

Unused, unaltered parts in original packaging. No restocking fee. Electrical parts excluded. Return details.

Have a fitment question? Contact our parts team with the complete model, year and clear photos of the component and its markings.

Kawasaki KZ400 parts questions

How do I choose the right Kawasaki KZ400 parts?
Choose the complete model code and year first: D, S, A Deluxe, B, C Special or H LTD. Then check the product’s application against the component fitted to your motorcycle. Frame and engine numbers help identify the bike; replacement carburetors, brakes or forks need their own checks.
Which KZ400 models does the premium carburetor kit fit?
The premium rebuild kit in this guide lists KZ400A 1977–1978, KZ400D 1976 and KZ400S 1976–1977. It does not establish fitment for other years or for B, C or H models. Compare the fitted carburetors and kit contents before ordering.
Are KZ400A and KZ400B engine gasket sets interchangeable?
The sets in this guide have separate applications: KZ400A 1977–1978 and KZ400B 1978–1979. A shared model year does not establish interchange. Choose the set for the engine fitted to the bike and check that its contents cover the joints being opened.
What should I check when buying KZ400 brake parts?
Identify the exact model, front or rear wheel, and fitted brake assembly. A stock S has a cable-operated front drum; a D has a hydraulic front disc. The H LTD front caliper differs from the B. Match the lever, pads, shoes or repair kit to that specific assembly.

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