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1978 Honda CB750A Speedometer Rubbers & Mounting Parts

Identify which part of your 1978 Honda CB750A instrument mounting or trim has deteriorated. The meter cushion, trip-meter knob grommet and internal seal have different locations and restrictions. Cap nuts and chrome covers are separate choices. Compare the installed speedometer and damaged piece before selecting the replacement.

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Honda motorcycle parts

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Honda CB900 CB750 speedo tach cap nut set 4

Honda CB900 / CB750 Speedo/Tach Cap Nut Set/4

$3.50 USD
49-0785
Mount your stock speedo and tach with this Speedo / Tach Cap Nut Set of 4. Used to mount the stock OEM-type speedometer and...
Honda CB750 CB550 CB500 speedometer tachometer internal rubber seal

Honda CB750 / CB550 / CB500 Speedometer / Tachometer Internal Rubber Seal

$11.95 USD
49-0255
Replace your gauge internal seal with this Speedometer / Tachometer Internal Rubber Seal. Replaces the ripped, dried, or missing rubber internal seal.Key Features• Speedo...
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Honda CB chrome speedometer and tachometer cover set

Honda CB Chrome Speedometer & Tachometer Cover Set

$44.95 USD
02-2480
Dress up your gauge cluster with this Chrome Speedometer & Tachometer Cover Set. These chrome-plated covers fit over your stock speedo and tach to...
Honda CB900 CB750 CB650 CB550 speedo tach meter cushion 37235-323-700

Honda CB Speedo/Tachometer Meter Cushion ~ Replaces 37235-323-700

$22.26 USD
73-0096
Replace your speedo / tach meter cushion with this Speedo / Tachometer Meter Cushion, replacing OEM #37235-323-700.Note: 2 used per bike, one for the...
Honda CB750 CB550 CB500 CB400 CB350 trip meter knob rubber grommet

Honda CB Trip Meter Knob Rubber Grommet

$17.50 USD
49-0256
Replace your trip meter knob grommet with this Day Trip Meter Knob Rubber Grommet. These grommets often dry out and rip; get a new...
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Honda CB900 CB750 CB650 CB550 Honda speedometer chrome back cover plate 37236-426-000

Honda CB900 / CB750 / CB650 / CB550 Genuine Honda Speedometer Chrome Back Cover Plate ~ OEM 37236-426-000, 37236-393-008

$69.95 USD
99-5253
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Speedometer Chrome Back Cover Plate — precision‑engineered and made in Japan. This authentic...
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1978 Honda CB750A · Mounts, Rubbers & Hardware Buying guide

Match the rubber’s location before its appearance

A meter cushion supports a different repair from a knob grommet or internal seal. The CB750A cushion listing is speedometer-only, while the internal seal requires stock-type ND-brand gauges. Trim and mounting nuts remain separate products.

Parts to consider

Honda CB Speedo/Tachometer Meter Cushion ~ Replaces 37235-323-700 Speedometer meter cushionCushion referencing 37235-323-700. The CB750A-specific note says it fits the speedometer only.View part Honda CB Trip Meter Knob Rubber Grommet Trip-meter knob grommetRubber grommet for the trip-meter knob, explicitly listed for the 1978 CB750A. Compare the removed grommet and fitted instrument.View part Honda CB750 / CB550 / CB500 Speedometer / Tachometer Internal Rubber Seal Internal seal for ND-brand gaugesRubber internal seal restricted to stock-type Honda CB750 ND-brand gauges. It is a different part from the meter cushion.View part

Related parts: Four stock-type instrument cap nuts · Chrome speedometer back cover plate · Chrome gauge covers; instruments excluded

Let the Hondamatic-specific cushion note control the choice

The cushion is ordered by the piece. Its general description mentions speedometer and tachometer positions, but the CB750A application explicitly says speedometer only. Use that model-specific restriction when deciding the replacement quantity.

Inspect trim and fasteners independently of the rubber repair

The cap nut set supplies four nuts for stock OEM-type instrument mounting. The chrome back cover is a separate speedometer trim piece, and the cover set excludes complete instruments. Inspect the motorcycle’s actual hardware and housings; a missing rubber does not automatically require new covers, nuts or a whole gauge.

Common questions

Can the internal seal replace the meter cushion?

The internal seal belongs inside a suitable stock-type ND-brand gauge. The meter cushion is a separate product restricted to the CB750A speedometer. Identify the damaged rubber by its position and reference before choosing a replacement.

How many cap nuts are supplied in the set?

The listing specifies four cap nuts for stock OEM-type instrument mounting, referencing 94021-06020. That is the package quantity. Inspect the existing mounting hardware on your Hondamatic to decide how many nuts need replacement.

Do the chrome trim products include gauges or rubber parts?

The cover set explicitly excludes speedometers and tachometers, and the back cover plate is separately described trim. Read each listing for its specific part. Order the needed cushion, grommet or internal seal from its own product rather than assuming it accompanies chrome trim.

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