Turn every press of the pedal into hydraulic pressure for the brakes with the Dorman First Stop Brake Master Cylinder M630441. It is a direct-fit replacement for the 2006-2008 Buick Lucerne and 2006-2008 Cadillac DTS (All engines). Dorman precision-engineered it to mirror the original master cylinder's design, function and performance on those vehicles.
- 100% new: Constructed entirely from new, high-quality materials with safety and durability in mind.
- Aluminum construction: The master cylinder is aluminum, and its housing is constructed to match the original part's material for similar performance.
- EPDM rubber components: Every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- Strict specifications: Made to meet rigorous SAE International standards.
Specifications: 1-inch bore with two outlets. The secondary outlet thread is M13 x 1.5 and the primary outlet thread pitch is 1.5 mm. The reservoir and sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether the originals may be reused. Country of origin: China.
Signs this part may need replacing: a spongy or slowly sinking brake pedal, fluid seeping from the master cylinder, a dropping fluid level, or an illuminated brake warning light. Other brake faults can cause these symptoms, so diagnose the system first. If the master cylinder is the cause, this unit replaces it. Follow the service procedure, including bleeding the brake system, when installing.
Interchange: 174-1134 · 100-2353 · 13-3282 · 13-3282A · 130.62141 · 355-45020
1741134 · 1002353 · 133282 · 133282A · 13062141 · 35545020 · 15283583 · 19209200 · M4087 · M4088 · NM4087A · NM4088 · MC391079 · F142296 · MC142296
This part cross-references / interchanges with the following part numbers:
174-1134, 100-2353, 13-3282, 13-3282A, 130.62141, 355-45020, 15283583, 19209200, M4087, M4088, NM4087A, NM4088, MC391079, F142296, MC142296
