VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.
4.8/5 from 1330 CB riders Read Reviews
  • Home
  • 1977-78 Honda CB550K Wire Harness ~ Replaces 32100-404-670
Honda CB550K wire harness 32100-404-670
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
1 / 1 · Photo
Honda CB550K wire harness 32100-404-670

Use arrows or thumbnails to browse

1977-78 Honda CB550K Wire Harness ~ Replaces 32100-404-670

73-0128
$109.95 USD
In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,330 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1977-78 Honda CB550K Wire Harness ~ Replaces 32100-404-670
$109.95 USD
Description

Replace your CB550K main harness with this Main Wire Harness Loom, replacing OEM #32100-404-670.

Note: this fits the model years listed. Other years of CB550 use a different OEM part number (there is a difference).

Key Features
• Main wire harness loom
• Replaces OEM #32100-404-670

Fitment / Compatibility
• Honda CB550K (1977‑78)

Part Number: 73-0128

Read More
Read Less

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

Make Model Year
Honda CB550K3 1977
Honda CB550K4 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.

Start your return below. Wait for our instructions before mailing a part back.

Start a return

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

Which motorcycle and Honda main-harness reference does this match?

The main wire harness matches the 1977-1978 Honda CB550K and replaces Honda OEM 32100-404-670. Earlier CB550K years use a different harness and should not be assumed compatible.

What is included with the replacement main wire harness?

One main wiring-harness loom is included. Switches, relays, electrical components and separate sub-harnesses are not included.

What should be checked before connecting a replacement wire harness?

Disconnect the battery, compare every connector and branch with the original loom, clean ground points and repair the cause of any melted connector or blown fuse before applying power.

See Why Customers Love Us

Your cart

×