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  • 1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003
Honda CB750 CB650 front caliper piston boot 45109-425-003
VintageCB750 parts reference, SKU 73-1041. 1980 Honda CB750C A | U.S. dealer | original serial limits unverified example. OEM 45109-425-003.
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB750 CB650 front caliper piston boot 45109-425-003

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Load image into Gallery viewer, Honda CB750 CB650 front caliper piston boot 45109-425-003
Load image into Gallery viewer, VintageCB750 parts reference, SKU 73-1041. 1980 Honda CB750C A | U.S. dealer | original serial limits unverified example. OEM 45109-425-003.

1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003

73-1041
$15.95 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 1,331 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003
$15.95 USD
Description

Replace your front caliper piston dust boot with this Front Brake Caliper Piston Rubber Dust Boot, replacing OEM #45109-425-003.

Key Features
• Front brake caliper piston rubber dust boot
• Replaces OEM #45109-425-003

Fitment / Compatibility

• Honda CB750K (1979‑81)
• CB750L (1979) Limited
• CB750C (1980) Custom

• Honda CB650 (1979‑81)
• CB650C (1980) Custom

Part Number: 73-1041

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

Make Model Year
Honda CB750K Standard 1979
Honda CB750L Limited 1979
Honda CB750K 1980
Honda CB750C Custom 1980
Honda CB750K 1981
Honda CB650 1979
Honda CB650 1980
Honda CB650 1981
Honda CB650C Custom 1980

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

What is included with Honda caliper piston boot 45109-425-003?

One front brake-caliper piston dust boot replacing Honda OEM 45109-425-003 is included. It is not the square-cut hydraulic piston seal.

What does caliper piston boot 45109-425-003 protect?

It helps keep water and road debris away from the exposed piston and caliper bore. A torn boot can allow corrosion that causes the piston to bind.

What else should be inspected when replacing a caliper piston boot?

Inspect the piston, bore, hydraulic seal and seal grooves, use only brake-compatible lubricant and fluid, and fully bleed the system after service. Pressure-test for leaks and verify free wheel rotation before riding.

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