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  • 1978-86 Honda CB450 / CB400 Rectifier / Regulator ~ Lithium Ion Battery Compatible
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Honda CB450 CB400 rectifier regulator lithium ion battery compatible 31600-KV8-681
SKU 24-2034 — approved OEM fiche location reference (NIGHT20261026-0128)
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB450 CB400 rectifier regulator lithium ion battery compatible 31600-KV8-681

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Load image into Gallery viewer, Honda CB450 CB400 rectifier regulator lithium ion battery compatible 31600-KV8-681
Load image into Gallery viewer, SKU 24-2034 — approved OEM fiche location reference (NIGHT20261026-0128)

1978-86 Honda CB450 / CB400 Rectifier / Regulator ~ Lithium Ion Battery Compatible

24-2034
$189.95 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 1,347 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1978-86 Honda CB450 / CB400 Rectifier / Regulator ~ Lithium Ion Battery Compatible
$189.95 USD
Description

Upgrade your CB400 or CB450 to a lithium-ion compatible regulator with this Rick's Electric Rectifier/Regulator, replacing OEM #31600-KV8-681 / #31600-413-008. Designed with a lower voltage set point for lithium-ion batteries only. Rick's design does not include the black signal wire.

Not for use with standard lead-acid batteries. Voltage set point is 14V ±0.2. Please confirm this is correct for your battery before installation.

Key Features
• Rick's Electric lithium-ion rectifier/regulator
• Replaces OEM #31600-KV8-681 / #31600-413-008
• Lower voltage set point (14V ±0.2) for lithium-ion only
• No black signal wire
• Honda part name: Rectifier Assy., Regulator
• Interchangeable with Honda 31600-KN8-730

Fitment / Compatibility
• Honda CB400A (1978)
• CB400TI (1978‑79)
• CB400TII (1978‑79)
• CB400T (1980‑81)
• CB450SC (1982‑83 / 1985‑86)
• CB450T (1982)

Part Number: 24-2034

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

Make Model Year
Honda CB400A 1978
Honda CB400TI Hawk 1978
Honda CB400TIZ Hawk 1979
Honda CB400TII Hawk 1978
Honda CB400TIIZ Hawk 1979
Honda CB400TII Hawk 1978
Honda CB400TIIZ Hawk 1979
Honda CB400TA Hawk 1980
Honda CB400TB Hawk 1981
Honda CB450SCC Nighthawk 1982
Honda CB450SCD Nighthawk 1983
Honda CB450SCF Nighthawk 1985
Honda CB450SCG Nighthawk 1986
Honda CB450TC 1982

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.

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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

Which battery type is compatible with rectifier/regulator 24-2034?

It is designed only for a lithium-ion battery and uses a 14.0V ±0.2 set point. Do not use it with a standard lead-acid battery.

Why does lithium rectifier/regulator 24-2034 have no black signal wire?

Rick's lithium-compatible design regulates without the black sensing lead used by the original-style unit; compare the connectors and wiring layout before installation.

Which Honda charging numbers does 24-2034 replace?

It cross-references Honda 31600-KV8-681 and 31600-413-008 for the listed 1978-1986 CB400 and CB450 applications.

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