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  • 1972-76 Honda CB750F / CB750K / CB450K Front Stop Hose "B" ~ Replaces 45126-341-003
Honda CB750F CB750K CB450K front stop hose "b" 45126-341-003
VintageCB750 parts reference, SKU 51-7204. 1974 Honda CB750K4 (A) example. OEM 45126-341-003.
Honda CB750F CB750K CB450K Front Stop Line "B" - Replaces Honda OEM 45126-341-003 — 02-rear (51-7204)
Honda CB750F CB750K CB450K Front Stop Line "B" - Replaces Honda OEM 45126-341-003 — 03-top (51-7204)
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB750F CB750K CB450K front stop hose "b" 45126-341-003

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Load image into Gallery viewer, Honda CB750F CB750K CB450K front stop hose "b" 45126-341-003
Load image into Gallery viewer, VintageCB750 parts reference, SKU 51-7204. 1974 Honda CB750K4 (A) example. OEM 45126-341-003.
Load image into Gallery viewer, Honda CB750F CB750K CB450K Front Stop Line "B" - Replaces Honda OEM 45126-341-003 — 02-rear (51-7204)
Load image into Gallery viewer, Honda CB750F CB750K CB450K Front Stop Line "B" - Replaces Honda OEM 45126-341-003 — 03-top (51-7204)

1972-76 Honda CB750F / CB750K / CB450K Front Stop Hose "B" ~ Replaces 45126-341-003

51-7204
$49.95 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
1972-76 Honda CB750F / CB750K / CB450K Front Stop Hose "B" ~ Replaces 45126-341-003
$49.95 USD
Description

Replace your front brake hose "B" with this Front Brake Hose "B", connecting the front brake master cylinder to the 3-way joint. Replaces OEM #45126-341-003. Length 15.5".

Key Features
• Front brake hose "B"
• 15.5" length
• Connects master cylinder to 3-way joint
• Replaces OEM #45126-341-003
• Honda part name: Hose B, Fr. Brake (Nichirin)
• Interchangeable with Honda 45126-341-000

Fitment / Compatibility

• Honda CB750K (1972‑76)
• CB750F (1975‑76) Supersport

• Honda CB450K (1972)

Part Number: 51-7204

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

Make Model Year
Honda CB750K 1972
Honda CB750K 1973
Honda CB750K 1974
Honda CB750K 1975
Honda CB750F Supersport 1975
Honda CB750K 1976
Honda CB750F 1976
Honda CB450K5 1972

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 are the front brake hose length and connection?

One hose measuring 16 inches is included for the front master cylinder to the matching lower brake-line connection position and replaces Honda OEM 45126-341-003.

Are the other brake hoses and sealing hardware included?

No. Other hoses, pipes, junctions, banjo bolts and sealing washers are separate. Use new sealing washers wherever the Honda procedure requires them.

What must be checked after installing the brake hose?

Route it without twists or contact through full steering and suspension travel, fill and bleed with the specified brake fluid, then hold firm pressure while checking every connection for leakage before riding.

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