Honda motorcycle parts
Choose your model and year to see parts listed for your bike.
Choose your model and year to see parts listed for your bike.
1978 Honda CB750K · Fuel system Buying guide
Carb seals, pump components, intake supports and tank closures are separate choices here. Start with the failed item, check what its replacement supplies, and add surrounding pieces only when the repair calls for them.
Carb rebuild kit with jetsJapanese-made one-carb kit with D313 slide needle, #105 and #110 main jets, float needle, gaskets, six O-rings and application-specific screw alternatives.View part
Accelerator-pump diaphragm kitOne diaphragm with rod and one bellows rubber, replacing 16021-393-004, 16021-393-014 and 16021-MC9-771.View part
Four carb holdersFour holders replacing 16211-405-000, 16212-405-000, 16213-405-000 and 16214-405-000; specified clamps are separate.View part
Related parts: Filler cap with installed gasket · Pull throttle cable · Stock-type air filter
The smaller packing kit lists bowl and top gaskets, O-rings and a needle. The larger kit adds named jets, a D313 slide needle and adjustment parts. Each package serves one carburetor; compare the damaged pieces before buying both for the same repair.
The holder set and airbox boots support the listed stock arrangement. Pod filters and a carb stabilizer bracket serve a custom intake setup. Read the requirements of the equipment actually fitted, and avoid treating the available jet sizes as a ready-made tune for an unknown motorcycle.
Its contents cover more than one listed application. The supplier associates #105 with the 1977–78 F and #110 with the 1978 K, and identifies 1978 F and 1977–78 K screw types. Match the actual carburetor and required parts; those package notes do not independently establish factory specifications or a tune for a modified bike.
That end-to-end pin condition belongs to the CB650 applications in the diaphragm description. The 1977–78 CB750K is listed separately. Compare the removed assembly and replacement references rather than treating the CB650 note as a factory CB750K measurement.
Confirm the installed carburetors and the jet style and markings first. This inventory includes several press-in pilot sizes and main-jet assortments. Their presence establishes available choices, not a specific setting or a performance result for every 1978 CB750K.
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