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  • 1965-74 Honda CB450 Premium Carb Rebuild Kit
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Honda CB450 premium carb rebuild kit
Honda CB450 premium carb rebuild kit
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Honda CB450 premium carb rebuild kit

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1965-74 Honda CB450 Premium Carb Rebuild Kit

48-1228
$21.95 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
1965-74 Honda CB450 Premium Carb Rebuild Kit
$21.95 USD
Description

Restore smooth fuel delivery with this Premium Carburetor Rebuild Kit, designed to refresh worn components inside your carburetor and restore proper performance. This kit features long-lasting, high-quality Viton components, known for their durability and resistance to fuel and heat.

Over time, carburetor seals, gaskets, and internal parts can wear or deteriorate, leading to fuel leaks, poor idle, or inconsistent performance. Rebuilding the carb with fresh components helps restore proper fuel metering and reliable engine operation.

Key Features
• Premium carburetor rebuild kit
• High-quality Viton components for long service life
• Helps restore proper fuel delivery and carb performance
• Ideal for carburetor maintenance, repair, or restoration

Kit Includes
• Float bowl gasket
• Carb top gasket
• Various O-rings
• Plug
• Float needle
• Seat #2.0
• Main jet #125
• Needle D8
• Pilot jet #40
• Mixture screw
• Spring
• C-clip

Fitment / Compatibility
• Honda CB450K (1965–1974)

Note: Each kit rebuilds one carburetor. Order the quantity required to service your motorcycle.

Frequently asked questions

What material are the gaskets and O‑rings made from, and are they compatible with modern ethanol fuels?

Yes — the kit's gaskets and O-rings are made from Viton. Viton is a durable, fuel- and heat-resistant elastomer suitable for carburetor service on vintage Hondas. If you run unusually high ethanol blends, check compatibility before installing or contact us for guidance.

Why should I choose a Viton carb kit over a standard rubber one?

Choose a Viton kit because Viton resists ethanol and high heat far better than standard NBR-style rubber, so it maintains seal integrity under modern fuel blends. Viton O-rings and gaskets swell and harden less, which preserves fuel metering, reduces leak risk, and extends service interval for restorations and road use.

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

Make Model Year
Honda CB450K0 1965
Honda CB450K0 1966
Honda CB450K0 1967
Honda CB450K1 1968
Honda CB450K2 1969
Honda CB450K3 1970
Honda CB450K4 1971
Honda CB450K5 1972
Honda CB450K6 1973
Honda CB450K7 1974

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.

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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 premium carburetor kits are needed to rebuild all carburetors on a 1965-1974 Honda CB450?

One kit rebuilds one carburetor. The 1965-1974 Honda CB450 uses 2 carburetors, so 2 kits are needed for the complete carburetor bank.

Which calibrated carburetor parts must be matched before installation?

The kit includes #125 main jet, #40 pilot jet, D8 jet needle and #2.0 float-valve seat. Compare every jet number, needle code and float-valve size with the original carburetor and the Honda specifications for the exact model before choosing among any supplied alternatives.

Does a rebuild kit correct every carburetor problem?

No. Clean the carburetor passages ultrasonically or with approved cleaner, check the float and throttle shaft, set float height, inspect intake boots for leaks and synchronize multiple carburetors after installation. Replacing parts cannot compensate for blocked passages or worn castings.

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