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1979 Honda CB750K Gauge Cap Nuts & Internal Seals

Two specific restoration items populate this 1979 CB750K instrument hardware route: a four-piece cap nut set and an internal rubber seal. They belong to different positions on the gauges. Identify the instrument type and the part you need before choosing either one.

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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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1979 Honda CB750K · Mounts, Rubbers & Hardware Buying guide

Distinguish an instrument fastener from its internal seal

The cap nuts are described for stock OEM-type instrument mounting. The rubber seal is listed for stock-type Honda CB750 ND-brand gauges. Neither description establishes use in every aftermarket mini, micro or custom instrument.

Parts to consider

Honda CB900 / CB750 Speedo/Tach Cap Nut Set/4 Instrument cap nut set of fourFour cap nuts for stock OEM-type speedometer and tachometer mounting. Replaces reference 94021-06020.View part Honda CB750 / CB550 / CB500 Speedometer / Tachometer Internal Rubber Seal ND-type internal rubber sealInternal gauge seal described for stock-type Honda CB750 ND instruments. Verify the maker on your existing gauge.View part

Check the existing instrument before buying rubber

The internal seal’s application is tied to ND-brand stock-type gauges. A previous owner may have fitted different instruments even if the motorcycle retains its original model identity. Inspect the gauge and compare its internal seal arrangement; do not order this part solely from the bike’s year.

Read the cap nut set as a defined hardware pack

The mounting nut listing supplies a set of four and identifies reference 94021-06020. It does not describe a kit containing gauges, cushions or internal seals. Review the fasteners already fitted and the parts required for your particular instrument repair before adding the set.

Common questions

What is included in the cap nut pack?

The product states a set of four speedometer/tachometer cap nuts, replacing reference 94021-06020. Its purpose is mounting stock OEM-type instruments. It does not list gauge seals, cushions or complete instruments as supplied contents.

Why does the seal listing mention ND?

That is the instrument maker specified by the product’s fitment wording. Identify your existing gauges before ordering the internal seal. A custom gauge or another instrument brand needs a separate compatibility check.

Can either item replace a worn gauge mechanism?

These are an instrument mounting fastener set and an internal rubber seal. Neither listing describes a replacement speedometer or tachometer mechanism. Match the part to the repair you are making rather than treating it as a complete gauge assembly.

Not sure which part you need?

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

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