




🚗 Upgrade your brake game with precision and confidence!
The Dorman M630284 Brake Master Cylinder is a 100% new, precision-engineered replacement part designed to match the original equipment's material and performance. Featuring durable EPDM rubber components resistant to glycol-based brake fluids, it meets strict SAE standards and fits select Cadillac, Chevrolet, and GMC models from 2003-2006. Ensure exact fitment with the included garage tool for a seamless, safe upgrade.




| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | M630284 |
| Item Weight | 2.97 pounds |
| Product Dimensions | 13 x 9 x 8.3 inches |
| Item model number | M630284 |
| Exterior | Machined |
| Manufacturer Part Number | M630284 |
| OEM Part Number | 10-3100; 13-3100B; 130.66049; 131.66049; 13914; 174-798; F140377; M4074; MC140377; MC390804; MC512610; NM4074A; 15269947; 18047540; 19209199 |
M**
No more brake problems
Fit perfect just like original
R**T
Works for me
Amazon got me the master cylinder very quicklyI bench bleed it and installed it with zero issues.
A**S
se daño a la semana.
no sirve tuve que comprar otra en otra marca.
S**S
STOP! well, you should now......
I replaced this on my 2004 Cadillac Escalade and it was a perfect match. Bench bled and swapped out w/in a 1/2 hr or so. (this was after I made my bleeder lines). Would recommend.
W**N
Fit good.
Still having problems with braking but it fit.
P**.
Fit's on my GMC Yukon XL 2004, 5.3
This part perfectly fits on my Yukon XL, 2004, 5.3l. Just plug & play installation. Just need to pre-blid fluid before you install it on its place.
A**R
Perfect master cylinder replacement
Came just as described. Benched bleed it and installed the master cylinder with ease... finally have brakes again and they are better than ever!
M**N
Good
Thank u
Trustpilot
2 days ago
1 month ago