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1973 Honda CB500K Intake Rubber Sets & Rack Support

Intake rubber on a 1973 Honda CB500K has different jobs on either side of the carburetors. Engine-side holders seal at the head, while airbox boots connect to the retained airbox. Both are four-piece sets, but their replacement clamp sizes and quantities differ.

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Currently viewing Carb Holders, Air Box Rubber Boots, Clamps

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Honda CB550F CB550K CB500K carb holder set 16211-323-000

1971-77 Honda CB550F / CB550K / CB500K Carb Holder Set ~ Replaces 16211-323-000

$54.95 USD
48-1476
Replace your CB500K, CB550K, or CB550F Supersport carb holders with this Carb Holder Set of 4. Replaces those old cracked or dried-up carb holders....
Honda CB550F CB550K CB500K carb air box rubber boot set 4

1971-77 Honda CB550F / CB550K / CB500K Carb Air Box Rubber Boot Set/4

$89.95 USD
73-0137
Replace your CB500 or CB550 carb-to-air-box boots with this Carburetor to Air Box Rubber Boot Set of 4. Replaces your old worn, cracked, or...
Honda CB550K CB500K carburetor stabilizer bracket

1971-76 Honda CB550K / CB500K Carburetor Stabilizer Bracket

$49.95 USD
29-0540
Stabilize your CB500 or CB550 carburetors when running pods or hardtails with this Carburetor Stabilizer Bracket. High-quality stainless steel, made in Canada. A must-have...
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1973 Honda CB500K · Intake Rubber & Supports Buying guide

Check the engine side and airbox side as separate joints

Four engine-side holders reference 16211-323-000 and require eight 41–44 mm clamps when replacements are needed. The four airbox boots use four 45–47 mm clamps. A stainless support bracket addresses carburetor-rack support after a compatible airbox-removal conversion, not either rubber seal.

Parts to consider

1971-77 Honda CB550F / CB550K / CB500K Carb Holder Set ~ Replaces 16211-323-000 Four engine-side carburetor holdersHonda reference 16211-323-000. Clamps are separate; a complete installation calls for eight 41–44 mm clamps when needed.View part 1971-77 Honda CB550F / CB550K / CB500K Carb Air Box Rubber Boot Set/4 Four carburetor-to-airbox bootsThe rubber package contains four boots. Replaceable clamps are a separate four-piece requirement at 45–47 mm diameter.View part 1971-76 Honda CB550K / CB500K Carburetor Stabilizer Bracket Stainless support for the carb rackOne Canadian-made bracket supports the compatible four-carb rack when the stock airbox support is removed; it does not supply intake rubber.View part

Apply the clamp specification to the correct rubber set

The holders and airbox boots do not share the same replacement clamp specification. The holder source calls for eight 41–44 mm clamps; the boot source calls for four 45–47 mm clamps. Inspect usable original clamps and order replacements by the particular joint, rather than applying one set’s dimensions to both sides.

Account for support when the airbox is removed

The bracket source describes supporting the compatible rack when the stock airbox no longer provides support. That is a different role from sealing the engine-side holders or connecting original airbox boots. Check the current intake arrangement before ordering a bracket, rubber set or both.

Common questions

Which clamp size and quantity belongs with the engine-side holders?

The four holders reference 16211-323-000 and do not include clamps. The source specifies eight 41–44 mm clamps for a complete installation when replacements are needed. Compare the engine-side joints and reusable hardware before applying the different airbox-boot clamp specification.

What clamp order goes with the four airbox boots?

The airbox-side package supplies four boots and calls for four separate 45–47 mm clamps when needed. The engine-side holders instead require eight 41–44 mm clamps. Confirm the airbox remains fitted and identify the specific joint before choosing replacement clamp hardware.

How do I plan support hardware for an intake without the stock airbox?

The source identifies loss of rack support when the stock airbox is removed. One stainless bracket supports the compatible four-carb rack in the listed pod or no-airbox setup. Compare that arrangement before deciding whether support belongs alongside your intake-rubber order.

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