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Honda CB750 CB550 CB500 CB450 starter solenoid relay 35850-375-000
Parts fiche reference for SKU 24-2003
Honda CB750 CB550 CB500 CB450 starter solenoid relay 35850-375-000
Honda CB750 CB550 CB500 CB450 starter solenoid relay 35850-375-000
Honda CB750 CB550 CB500 CB450 starter solenoid relay 35850-375-000
5.0 ( 1 review)

Honda CB Starter Solenoid Relay ~ Replaces 35850-375-000

24-2003
$38.95 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 1,329 store reviews

1 product reviews

Honda CB Starter Solenoid Relay ~ Replaces 35850-375-000

$38.95 USD

Replace your late-'70s CB starter solenoid with this Starter Solenoid Relay, replacing OEM #35850-375-000 / #35850-286-027. Broad fitment across the late SOHC CB750, CB500T/CB550 family, CB400 family, CB450/CL450, CB350F/CB400F, and the CB350/CB360 lineup.

Key Features
• Starter solenoid relay
• Replaces OEM #35850-375-000 / #35850-286-027

Fitment / Compatibility

• Honda CB750K (1977‑78)
• CB750F (1977‑78) Supersport


• Honda CB500T (1975‑76)
• CB550F (1975‑77) Supersport
• CB550K (1977‑78)


• Honda CB400A (1978)
• CB400TII (1978‑79)
• CB450K (1970‑74)
• CL450K (1970‑72 / 1974)


• Honda CB350F (1973) Supersport
• CB400F (1975‑77) Supersport


• Honda CB350K (1968 / 1970‑72)
• CB350G (1973)
• CL350K (1968 / 1970‑73)
• SL350K (1970)
• CB360K (1974)
• CB360G (1974)
• CB360T (1975‑76)
• CL360K (1974‑75)

Part Number: 24-2003

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

Honda motorcycle models and years listed for this part
Make Model Year
Honda CB750K 1977
Honda CB750F 1977
Honda CB750K 1978
Honda CB750F 1978
Honda CB550K3 1977
Honda CB550K4 1978
Honda CB550F1 1975
Honda CB550F2 1976
Honda CB550F3 1977
Honda CB400F 1975
Honda CB400F 1976
Honda CB400F 1977
Honda CB350F0 1973
Honda CB500T Twin 1975
Honda CB500T Twin 1976
Honda CB400A 1978
Honda CB400TII Hawk 1978
Honda CB400TIIZ Hawk 1979
Honda CB450K3 1970
Honda CB450K4 1971
Honda CB450K5 1972
Honda CB450K6 1973
Honda CB450K7 1974
Honda CL450K3 1970
Honda CL450K4 1971
Honda CL450K5 1972
Honda CL450K6 1974
Honda CB360T 1975
Honda CB360T 1976
Honda CB360G 1974
Honda CB360K0 1974
Honda CL360K0 1974
Honda CL360K1 1975
Honda CB350K0 1968
Honda CB350K2 1970
Honda CB350K3 1971
Honda CB350K4 1972
Honda CB350G 1973
Honda CL350K0 1968
Honda CL350K2 1970
Honda CL350K3 1971
Honda CL350K4 1972
Honda CL350K5 1973
Honda SL350K0 Scrambler 1970

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.

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.

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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

Which Honda starter-solenoid numbers does relay 24-2003 replace?

The starter solenoid cross-references Honda 35850-375-000 and 35850-286-027 on the listed late SOHC CB applications.

How many starter solenoids are used per motorcycle?

One solenoid relay is included and one is used between the battery and starter motor on each compatible motorcycle.

What should be checked before replacing a starter solenoid?

Check battery condition, cable voltage drop, grounds, the starter button and safety-interlock circuit, then confirm the solenoid receives a trigger signal.

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