Keep the shoes on your front drum brakes retracting cleanly and seating true with the Carlson Drum Brake Shoe Return Spring Kit (MPN H521). It's a direct-fit replacement for a range of 1980-1987 medium- and heavy-duty trucks, including the Chevrolet C50, C60 and C70, GMC C7000, Ford B-600, F-700, C800 and LN800, and International S1723, S1754 and S1854, among many others. See the Buyer's Guide tab for the full application list.
Return springs pull the brake shoes back off the drum once you release the pedal; when they weaken or stretch, the shoes can drag, retract slowly, or wear unevenly. Refreshing this hardware during a shoe or drum service is inexpensive insurance for the rest of the job.
- Application: return-spring kit for the front drum brakes on the listed applications.
- Build: made to tight tolerances with quality materials and matching OE quality specifications.
- Upkeep: replacing worn hardware helps keep the drum brakes performing as intended and can lengthen the life of the friction parts.
- Feel: helps deliver a quieter, more efficient braking system.
Interchange: FHH521 · 80337
Manufacturer part number H521. Country of origin: China. Quantity per application: 1.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this return spring kit do?
The springs retract the brake shoes away from the drum after you release the pedal. This kit replaces that worn hardware on the front drum brakes of the listed applications.
Which vehicles does it fit?
It fits many 1980-1987 medium/heavy-duty trucks, including Chevrolet C50/C60/C70, GMC C7000, and various Ford (B-600, F-700, LN800) and International (S1723, S1754) models. See the Buyer's Guide tab for the full list.
What part numbers does it interchange with?
It cross-references FHH521 and 80337. Its own manufacturer part number is H521.
What are signs the return springs may need replacing?
Shoes that drag, retract slowly, or wear unevenly, along with brake noise, can be signs of weak or stretched return springs. Diagnose the cause before replacing.
Should I replace the hardware during a brake job?
Fitting fresh return springs when you service the shoes or drums is good practice, since worn or stretched springs can undermine the performance of new friction parts.