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Dorman - First Stop Brake Master Cylinder P/N:M39651
$72.99
Generate the hydraulic pressure that operates your truck's brakes with the Dorman - First Stop Brake Master Cylinder M39651. It drops in as a direct-fit replacement for the 1988-1991 Chevrolet C1500 and K1500 and the 1988-1991 GMC C1500 and K1500 (all engines). The master cylinder converts brake-pedal force into the hydraulic pressure that operates the vehicle's brakes; if a worn or leaking original cylinder is the cause of a sinking pedal or fluid loss, this unit replaces it.
- 100% new: made entirely of new materials, not remanufactured.
- Aluminum housing: cast to match the casting material of the original part for similar performance.
- EPDM rubber components: designed to resist glycol-based brake fluid.
- Strict specifications: made to meet SAE International standards.
Features a 1-inch bore with two outlets and a 1/2-20 rearward outlet size. The reservoir is included; a sensor is not included, and mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 174-667 · 174667 · 18M1743 · 18M365 · 783-44020 · 78344020 · 83-44020 · 8344020 · M900571 · 100-2601 · 1002601 · M-86020 · M86020 · 12218 · 13-2351 · 132351 · 10-2351 · 102351 · 130.66020 · 131.66020 · MC116626 · 355-47151 · 35547151 · 18013976 · 18060085 · NM2218 · 2539651 · MC39651 · F116626. Manufacturer part number M39651.
This part cross-references / interchanges with the following part numbers:
174-667, 18M1743, 18M365, 783-44020, 83-44020, M900571, 100-2601, M-86020, 12218, 13-2351, 10-2351, 130.66020, 131.66020, MC116626, 355-47151, 18013976, 18060085, NM2218, 2539651, MC39651, F116626
Frequently Asked Questions
What vehicles does this master cylinder fit?
It is a direct-fit replacement for the 1988-1991 Chevrolet C1500 and K1500 and the 1988-1991 GMC C1500 and K1500 (all engines). See the Buyer's Guide tab to confirm your vehicle.
Does it include a reservoir or a fluid-level sensor?
The reservoir is included. A sensor is not included with this master cylinder.
What are the bore and outlet specifications?
It has a 1-inch bore diameter with two outlets, and the rearward outlet size is 1/2-20.
Is this unit new or remanufactured?
It is 100% new — made entirely of new materials, not remanufactured — with an aluminum housing cast to match the original part's casting material.
Does it come with mounting hardware?
No, mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M39651
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