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1978 Honda CB400TII Hawk II Carb Holders & O-Rings

Inspect the rubber holders where the Hawk II carburetors join the cylinder head. If a holder is cracked or hardened, replace the assembly; if the holder is serviceable and the joint seal needs renewal, compare the separate O-ring option with the repair requirements.

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Currently viewing Carb Holders, Air Box Rubber Boots, Clamps

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Honda CB450 CB400 cylinder head intake boot o-rings (set 4) 91301-371-005

1978-86 Honda CB450 / CB400 Cylinder Head Intake Boot O-Rings (Set/4) ~ Replaces 91301-371-005

$8.19 USD
48-5044
Replace your cylinder head intake boot O-rings with this Cylinder Head Intake Boot O-Rings Set of 4, size 40 x 2.6mm. Replaces OEM #91301-371-005...
Honda CB400 carb holder with rubber o-ring 16211-413-000

1978-79 Honda CB400 Carb Holder with Rubber O-Ring ~ Replaces 16211-413-000

$27.03 USD
48-1474
Replace a single CB400TI or CB400TII carb holder with rubber O-ring using this Carb Holder with Rubber O-Ring, replacing OEM #16211-413-000 (holder) and #91325-413-830...
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1978 Honda CB400TII Hawk II · Carburetor Holders Buying guide

Choose between a complete holder and joint seals

Each replacement holder includes one O-ring, and the engine uses two holders. The separate O-ring package contains four seals, so keep package quantity distinct from the two installed positions.

Parts to consider

1978-79 Honda CB400 Carb Holder with Rubber O-Ring ~ Replaces 16211-413-000 Carburetor holder with O-ringOne holder and one rubber O-ring, replacing holder reference 16211-413-000. Two holders are used on the Hawk II.View part 1978-86 Honda CB450 / CB400 Cylinder Head Intake Boot O-Rings (Set/4) ~ Replaces 91301-371-005 Intake O-rings, pack of fourFour 40 × 2.6 mm intake-joint O-rings. The stock twin uses one at each of its two cylinder-head holder joints.View part

Replace damaged holders as assemblies

A fresh joint O-ring does not repair a split or hardened rubber holder. Inspect the body, mounting flange and clamping area before choosing between the holder assembly and separate seals. Check the fitted carburetor and cylinder-head arrangement when parts have been changed.

Plan quantities and clamps separately

Order two holder assemblies if both sides are being renewed. Each brings its own O-ring. Inspect the band clamps as a separate part of the job; compare their fit and condition before reuse or ordering replacements for the new holders.

Common questions

Is the holder sold as a left-and-right pair?

No. Each purchase supplies one holder with one O-ring. The Hawk II uses two holders, so order two assemblies when replacing both cylinder-head intake connections.

How many O-rings are in the separate pack?

The separate package contains four O-rings sized 40 × 2.6 mm. The stock twin has two holder-to-head joints, each using one seal, so the pack provides more than one two-joint renewal.

Do I need separate O-rings when buying new holders?

Each featured holder already includes one O-ring. Additional rings are only needed for other planned seal work or spares. Check band-clamp condition separately rather than assuming clamps come with the holder.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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