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  • Honda CB Spark Plug Cap ~ VD05F
Honda CB750 CB550 CB500 CB400 CB350 spark plug cap VD05F
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Honda CB750 CB550 CB500 CB400 CB350 spark plug cap VD05F

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4.8 ( 4 reviews)

Honda CB Spark Plug Cap ~ VD05F

23-3121
$10.49 USD

Sold individually

In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,329 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts

4 product reviews

Honda CB Spark Plug Cap ~ VD05F

Honda CB Spark Plug Cap ~ VD05F
$10.49 USD
Description

VD05F spark plug cap designed for the outer cylinders on Honda CB750 models. Provides a secure connection between the ignition wire and spark plug for consistent spark delivery.

Caps can wear over time or lose connection strength, leading to misfires or weak ignition. Replacing them helps maintain reliable performance across the ignition system.

Key Features

• Spark plug cap – VD05F
• Designed for outer cylinders on CB750 models
• Supports consistent spark delivery
• Secure fit to ignition wire and spark plug
• Durable construction for long service life
• Sold individually

Important Note

• Fits 2 outer cylinders on all Honda CB750 models (1969–1978)
• 2 required per bike

Fitment / Compatibility

CB350F0 (1972)
CB350F0 (1973)
CB350F1 (1974)
CB400F (1975)
CB400F (1976)
CB400F (1977)
CB500K0 (1971)
CB500K1 (1972)
CB500K2 (1973)
CB550K0 (1974)
CB550K1 (1975)
CB550K2 (1976)
CB550K3 (1977)
CB550K4 (1978)
CB550F1 (1975)
CB550F2 (1976)
CB550F3 (1977)
CB750K (1969) Standard
CB750K (1970)
CB750K (1971)
CB750K (1972)
CB750K (1973)
CB750K (1974)
CB750K (1975)
CB750K (1976)
CB750K (1977)
CB750K (1978)
CB750F (1975) Supersport
CB750F (1976)
CB750F (1977)
CB750F (1978)
CB750A (1976) Hondamatic
CB750A (1977)
CB750A (1978)
CB750P (1976) Police
CB750P (1978)

Part Number: 23-3121

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Check the listed model and year, then read any fitment notes in the description.

Make Model Year
Honda CB350F0 1972
Honda CB350F0 1973
Honda CB350F1 1974
Honda CB400F 1975
Honda CB400F 1976
Honda CB400F 1977
Honda CB500K0 1971
Honda CB500K1 1972
Honda CB500K2 1973
Honda CB550K0 1974
Honda CB550K1 1975
Honda CB550K2 1976
Honda CB550K3 1977
Honda CB550K4 1978
Honda CB550F1 1975
Honda CB550F2 1976
Honda CB550F3 1977
Honda CB750K Standard 1969
Honda CB750K 1970
Honda CB750K 1971
Honda CB750K 1972
Honda CB750K 1973
Honda CB750K 1974
Honda CB750K 1975
Honda CB750K 1976
Honda CB750K 1977
Honda CB750K 1978
Honda CB750F Supersport 1975
Honda CB750F 1976
Honda CB750F 1977
Honda CB750F 1978
Honda CB750A Hondamatic 1976
Honda CB750A 1977
Honda CB750A 1978
Honda CB750P Police 1976
Honda CB750P 1978

Free ground shipping over $50

To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.

Estimated ground delivery after your order ships
DestinationDelivery time
USA4–7 business days
Canada2–6 business days

Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.

See full shipping details

60-day returns on eligible parts

No restocking fees. Eligible parts must be unused, uninstalled, unaltered and complete. The 60-day window starts when your order is delivered.

Electrical parts are excluded from standard returns. Check return eligibility.

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Other shipping options

Canada Post Economy: Available at checkout for select small items. Allow 1–3 weeks for delivery. No tracking or insurance is included.

Outside the USA & Canada: Delivery times vary by destination and shipping method. Buyers are responsible for applicable duties, taxes and import fees. We cannot mark orders as gifts.

Frequently Asked Questions

How many NGK VD05F spark-plug caps are included and required for a CB750?

One NGK VD05F cap is included. Two VD05F caps are used on the two outer cylinders of a compatible CB750; the two inner cylinders use a different cap shape, so do not order four VD05F caps for a stock four-cylinder layout.

Why must the VD05F cap shape be used at the correct cylinders?

The angle and length provide the required clearance and ignition-lead routing at the outer cylinders. Match the VD05F code, terminal connection and installed cap position with the original.

Is spark-plug wire included with the VD05F cap?

No. One VD05F spark-plug cap is included; high-tension ignition wire and the spark plug are not included.

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