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Dorman - First Stop Brake Master Cylinder P/N:M390401
$115.99
Send firm brake-pedal force to every wheel as hydraulic pressure with the Dorman - First Stop Brake Master Cylinder (M390401). A master cylinder converts the force you apply at the pedal into the hydraulic pressure that operates the brake circuits. It's engineered to match the design, function, and performance of the original master cylinder on the listed applications, dropping in as a direct-fit replacement for a range of GM cars and minivans — including the 1998-2008 Pontiac Grand Prix, 1999-2003 Buick Century, 2000-2005 Chevrolet Impala, 2000-2005 Chevrolet Venture, and 2005-2009 Buick LaCrosse — see the Buyer's Guide tab for the full list.
- 100% new: made entirely of new materials, not remanufactured, for a safe, durable replacement.
- Aluminum housing: constructed to match the casting material of the original part for similar performance.
- EPDM rubber components: made from a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Built to spec: made to meet rigorous SAE International standards, with a 1 in bore and two outlets (M12 x 1.0 outlet thread, 1 mm pitch).
This unit ships with the reservoir and sensor included. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Signs this part may need replacing include a pedal that slowly sinks to the floor, a spongy or soft pedal, or brake fluid seeping at the master cylinder; diagnose the cause before replacing.
Interchange: 174-783 · 174783 · 18M819 · 783-36111 · 78336111 · 83-36111 · 8336111 · M901054 · 100-2313 · 1002313 · M-82111 · M82111 · 13337 · 13-3183 · 133183 · 10-3183 · 103183 · 130.62111 · 131.62111 · MC252090 · 355-47083 · 35547083 · 18026277 · 18039288 · 18060780 · M2714 · NM2714A · MC390401 · F134488 · MC134488. Manufacturer part number M390401.
This part cross-references / interchanges with the following part numbers:
174-783, 18M819, 783-36111, 83-36111, M901054, 100-2313, M-82111, 13337, 13-3183, 10-3183, 130.62111, 131.62111, MC252090, 355-47083, 18026277, 18039288, 18060780, M2714, NM2714A, MC390401, F134488, MC134488
Frequently Asked Questions
What vehicles does the M390401 master cylinder fit?
It's a direct-fit replacement for GM models including the 1998-2008 Pontiac Grand Prix, 1999-2003 Buick Century, 2000-2005 Chevrolet Impala, and 2005-2009 Buick LaCrosse. See the Buyer's Guide tab for the full list.
Does it come with a reservoir and sensor?
Yes. The reservoir and sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused.
What is this master cylinder made of?
The cylinder housing is aluminum, constructed to match the casting material of the original part, and all rubber components use a high-quality EPDM compound that resists glycol-based brake fluid.
What are the signs my master cylinder may need replacing?
A pedal that slowly sinks to the floor, a spongy or soft pedal, or brake fluid leaking at the master cylinder can be signs. Diagnose the cause before replacing the part.
What are the bore and outlet specs?
It has a 1 in bore, two outlets, and M12 x 1.0 outlet threads with a 1 mm pitch. It's made to meet rigorous SAE International standards.
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Dorman - First Stop Brake Master Cylinder P/N:M390401
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