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1972 Honda CB350K4 Seat Covers & Hardware

Seat work on the 1972 Honda CB350K4 can mean replacing upholstery, correcting missing support rubbers or renewing the lock bar. Inspect the seat pan and mounting points first, then choose the parts for the job rather than treating every seat problem as a cover replacement.

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Honda CB750 CB650 CB550 CB500 seat lock bar assembly 77220-340-003

Honda CB Seat Lock Bar Assembly ~ Replaces 77220-340-003

$54.95 USD
73-1070
Replace your seat lock bar with this Seat Lock Bar Assembly, replacing OEM #77220-340-003 / #77220-340-011.Key Features• Seat lock bar assembly• Replaces OEM #77220-340-003...
Honda CB seat rubber b 77205-286-000

Honda CB Seat Rubber B ~ Replaces 77205-286-000

$7.87 USD
02-6533
Replace those worn, dried-out seat rubbers under your classic Honda with this Seat Setting Rubber "B", a direct replacement for OEM #77205-286-000. One of...
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Honda CB450K CB350G CB350K seat cover

1972-74 Honda CB450K / CB350G / CB350K Seat Cover

$114.95 USD
48-9210
Restore your seat with this Replacement Seat Cover with reinforced passenger strap. No trim or hardware included; reuse your existing hardware. There is no...
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1972 Honda CB350K4 · Seat Covers & Hardware Buying guide

Plan the seat repair from the pan upward

The cover, support rubber and lock bar are separate service choices. Original K4 seat supports use two A rubbers and one B rubber, so identify the position before ordering a replacement cushion.

Parts to consider

Honda CB Seat Rubber B ~ Replaces 77205-286-000 Seat setting rubber BReplaces 77205-286-000. Sold individually; the original K4 seat uses one B rubber.View part Honda CB Seat Lock Bar Assembly ~ Replaces 77220-340-003 Seat lock bar assemblyReplacement assembly for references 77220-340-003 and 77220-340-011, with 1972 CB350K application.View part

Related parts: Stock-pattern replacement seat cover

Prepare the existing seat before replacing the cover

The linked replacement cover is intended for the original stock seat. It has a reinforced passenger strap and a foam layer sewn into its top. Installation and foam-repair instructions are included, so assess the existing foam and seat pan before beginning upholstery work.

Check support height before blaming the lock

A rocking or poorly supported seat calls for inspection of the cushions and their mounting points alongside the lock bar. Honda specifies two A rubbers, 77204-286-020, and one B rubber, 77205-286-000. The featured B rubber is a single replacement, so order for the position actually needing repair.

Questions before ordering

Is the linked seat cover a complete replacement seat?

It is the cover only, supplied with a reinforced passenger strap and sewn-in top foam layer. Trim and hardware are not included, and the rear has no Honda stencil. Reuse suitable existing hardware.

Will the cover fit a reshaped or aftermarket seat?

The cover is intended for an original stock seat. Compare the pan, foam profile and attachment arrangement before ordering for a modified seat; the motorcycle model alone does not establish the correct upholstery shape.

Does one B rubber replace every seat support?

The original K4 seat uses one B rubber and two separate A rubbers. The featured B rubber is sold individually and replaces only its matching support. Check a changed seat pan before using the original quantities.

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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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