Turn pedal effort into steady hydraulic pressure at the brakes with the Dorman First Stop Brake Master Cylinder M630296, a direct-fit Honda Accord master cylinder for the 2003-2004 Honda Accord (all engines) and the 2004 Acura TL (all engines). It is designed to match the original master cylinder's design, function and performance on the listed applications. It is built from new, high-quality materials for a durable replacement.
- Precise replacement: the aluminum cylinder housing is made to match the original part's casting material for similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely of new materials.
- Strict specifications: built to meet rigorous SAE International standards.
Specifications: two outlets. The rearward and secondary outlets are M14 x 1.5, and the primary outlet thread pitch is 1.5 mm. The bore diameter is 0.813 in. The reservoir and sensor are included. Mounting hardware is not included. Country of origin: Taiwan.
A master cylinder converts force from the brake pedal into hydraulic pressure in the brake lines. Signs it may need replacing include a soft or sinking brake pedal, fluid leaking around the unit, or a brake fluid level that keeps dropping. Other brake components can cause similar symptoms, so diagnose the cause before replacing.
Interchange: 100-1358 · 13-3171 · 11-3171 · 130.40056 · 131.40056 · 355-59038
1001358 · 133171 · 113171 · 13040056 · 13140056 · 35559038 · 13883 · 46100SDBA02 · M55138 · NM55138 · MC390784 · F141667 · MC141667
This part cross-references / interchanges with the following part numbers:
100-1358, 13883, 13-3171, 11-3171, 130.40056, 131.40056, 355-59038, 46100SDBA02, M55138, NM55138, MC390784, F141667, MC141667
Frequently Asked Questions
Is this the right 2004 Honda Accord master cylinder?
It is listed for the 2003-2004 Honda Accord and the 2004 Acura TL with all engines. Check the "Vehicles it fits" section to confirm it matches your vehicle.
What does a brake master cylinder do?
It converts force from the brake pedal into hydraulic pressure that moves brake fluid through the lines to the brakes at each wheel.
What comes in the box?
One master cylinder with the reservoir and sensor included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused.
What are the key specs?
It has two outlets, an aluminum housing, a 0.813 in. bore diameter and M14 x 1.5 rearward and secondary outlets. All rubber components use an EPDM compound.
What should I know about installation?
A master cylinder is typically bench-bled before installation, and the brake system is bled afterward. Follow the vehicle service information for the full procedure and torque values.
