Keep hydraulic braking force moving where it belongs with the Carlson disc brake caliper piston (P/N 7844), a direct-fit replacement for a wide range of medium-duty trucks. It fits front and rear applications including the 2003-2009 Chevrolet C4500 Kodiak, 2000-2002 Ford F-650 and F-750, 2005-2007 Hino 268 and 2004-2006 Isuzu FTR — see the Buyer's Guide tab for the full list of 39 applications.
Brakes are engineered as a system, and every part has to work together. Inside the caliper, the piston uses brake fluid pressure to push the brake pads against the rotor so the vehicle can slow and stop. When the friction material is worn enough to replace, service experts agree the hardware should be refreshed too.
If a seized, scored, or leaking piston is behind your braking complaint, this replaces it as part of a proper caliper service.
Interchange: FH7844
This part cross-references / interchanges with the following part numbers:
What does the Carlson disc brake caliper piston do?
It transfers brake fluid pressure inside the caliper, forcing the brake pads against the rotor so the vehicle slows and stops. It is a core piece of the disc brake hardware.
Does part 7844 fit front or rear brakes?
The catalog lists this piston for both front and rear applications. Check the Buyer's Guide tab and confirm the position for your specific vehicle and axle before ordering.
Which vehicles does this caliper piston fit?
It covers 39 medium-duty applications, including the 2003-2009 Chevrolet C4500 Kodiak, 2000-2002 Ford F-650/F-750, 2005-2007 Hino 268, and 2004-2006 Isuzu FTR. See the Buyer's Guide tab for the full list.
What are signs the caliper piston may need replacing?
A piston that is seized, scored, corroded, or leaking fluid can cause uneven pad wear, dragging, or a soft pedal. Diagnose the cause before replacing, as these symptoms have other possible sources.
What interchange number does 7844 replace?
This piston cross-references FH7844. Match your original part number and vehicle application to confirm the correct piston before installation.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
