Need expert help? Reach out to us via live chat MON-SAT, 9AM to 5PM ET, for support. Our specialists are ready to assist you!

Please, add your first item to the wishlist

Need expert help? Reach out to us via live chat MON-SAT, 9AM to 5PM ET, for support. Our specialists are ready to assist you!

Please, add your first item to the wishlist

Select vehicle to confirm fitment

Brake Master Cylinder

PART#: 18M1887
ACDelco

$132.95

In stock

Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
2004HummerH1Base6.5V8DIESELN/Awith 12100lb GVW
2003HummerH1Base6.5V8DIESELN/Awith 12100lb GVW
2002HummerH1Base6.5V8DIESELN/Awith 12100lb GVW
1995ChevroletG30Chevy Van5.7V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Sportvan6.5V8DIESELN/Aw/ Hydraulic Booster
1995ChevroletG30Beauville6.5V8DIESELN/Aw/ Hydraulic Booster
1995ChevroletG30Chevy Van6.5V8DIESELN/Aw/ Hydraulic Booster
1995ChevroletG30Beauville7.4V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Chevy Van5.7V8CNGN/Aw/ Hydraulic Booster
1995ChevroletG30Chevy Van4.3V6GASN/Aw/ Hydraulic Booster
1995ChevroletG30Hi-Cube5.7V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Beauville5.7V8CNGN/Aw/ Hydraulic Booster
1995ChevroletG30Beauville5.7V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Chevy Van7.4V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Hi-Cube6.5V8DIESELN/Aw/ Hydraulic Booster
1995ChevroletG30Sportvan5.7V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Hi-Cube5.7V8CNGN/Aw/ Hydraulic Booster
1995ChevroletG30Sportvan5.7V8CNGN/Aw/ Hydraulic Booster
1995ChevroletG30Hi-Cube7.4V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Sportvan7.4V8GASN/Aw/ Hydraulic Booster
1995ChevroletG30Hi-Cube4.3V6GASN/Aw/ Hydraulic Booster
1995ChevroletP30Base4.3V6GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1995ChevroletP30Base5.7V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1995ChevroletP30Base6.5V8DIESELN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1995ChevroletP30Base7.4V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1995GMCG3500Magnavan5.7V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Vandura6.5V8DIESELN/Aw/ Hydraulic Booster
1995GMCG3500Magnavan6.5V8DIESELN/Aw/ Hydraulic Booster
1995GMCG3500Vandura Special7.4V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Vandura5.7V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Magnavan7.4V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Rally Camper Special5.7V8CNGN/Aw/ Hydraulic Booster
1995GMCG3500Vandura Special4.3V6GASN/Aw/ Hydraulic Booster
1995GMCG3500Rally STX5.7V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Magnavan5.7V8CNGN/Aw/ Hydraulic Booster
1995GMCG3500Vandura Special5.7V8CNGN/Aw/ Hydraulic Booster
1995GMCG3500Rally5.7V8CNGN/Aw/ Hydraulic Booster
1995GMCG3500Rally6.5V8DIESELN/Aw/ Hydraulic Booster
1995GMCG3500Rally5.7V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Vandura5.7V8CNGN/Aw/ Hydraulic Booster
1995GMCG3500Rally STX5.7V8CNGN/Aw/ Hydraulic Booster
1995GMCG3500Rally Camper Special5.7V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Vandura4.3V6GASN/Aw/ Hydraulic Booster
1995GMCG3500Rally STX6.5V8DIESELN/Aw/ Hydraulic Booster
1995GMCG3500Vandura7.4V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Rally Camper Special6.5V8DIESELN/Aw/ Hydraulic Booster
1995GMCG3500Rally Camper Special7.4V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Rally STX7.4V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Vandura Special5.7V8GASN/Aw/ Hydraulic Booster
1995GMCG3500Vandura Special6.5V8DIESELN/Aw/ Hydraulic Booster
1995GMCG3500Rally7.4V8GASN/Aw/ Hydraulic Booster
1995GMCP3500Base4.3V6GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1995GMCP3500Base6.5V8DIESELN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1995GMCP3500Base5.7V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1995GMCP3500Base7.4V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1994ChevroletG30Chevy Van5.7V8GASN/Aw/ Hydraulic Booster
1994ChevroletG30Sportvan7.4V8GASN/Aw/ Hydraulic Booster
1994ChevroletG30Beauville7.4V8GASN/Aw/ Hydraulic Booster
1994ChevroletG30Hi-Cube6.5V8DIESELN/Aw/ Hydraulic Booster
1994ChevroletG30Hi-Cube7.4V8GASN/Aw/ Hydraulic Booster
1994ChevroletG30Hi-Cube4.3V6GASN/Aw/ Hydraulic Booster
1994ChevroletG30Chevy Van7.4V8GASN/Aw/ Hydraulic Booster
1994ChevroletG30Beauville5.7V8GASN/Aw/ Hydraulic Booster
1994ChevroletG30Sportvan6.5V8DIESELN/Aw/ Hydraulic Booster
1994ChevroletG30Sportvan5.7V8GASN/Aw/ Hydraulic Booster
1994ChevroletG30Beauville6.5V8DIESELN/Aw/ Hydraulic Booster
1994ChevroletG30Chevy Van6.5V8DIESELN/Aw/ Hydraulic Booster
1994ChevroletG30Chevy Van4.3V6GASN/Aw/ Hydraulic Booster
1994ChevroletG30Hi-Cube5.7V8GASN/Aw/ Hydraulic Booster
1994ChevroletP30Base5.7V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1994ChevroletP30Base6.5V8DIESELN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1994ChevroletP30Base4.3V6GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1994ChevroletP30Base7.4V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1994GMCG3500Vandura5.7V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Magnavan7.4V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally Camper Special5.7V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally5.7V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally STX6.5V8DIESELN/Aw/ Hydraulic Booster
1994GMCG3500Rally STX5.7V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Vandura Special5.7V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Vandura Special4.3V6GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally Camper Special6.5V8DIESELN/Aw/ Hydraulic Booster
1994GMCG3500Vandura Special7.4V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally6.5V8DIESELN/Aw/ Hydraulic Booster
1994GMCG3500Vandura7.4V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally STX7.4V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Vandura4.3V6GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally7.4V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Rally Camper Special7.4V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Magnavan5.7V8GASN/Aw/ Hydraulic Booster
1994GMCG3500Vandura6.5V8DIESELN/Aw/ Hydraulic Booster
1994GMCG3500Vandura Special6.5V8DIESELN/Aw/ Hydraulic Booster
1994GMCP3500Base5.7V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1994GMCP3500Base4.3V6GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1994GMCP3500Base7.4V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1994GMCP3500Base6.5V8DIESELN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1993ChevroletG30Beauville4.3V6GASN/Aw/ Hydraulic Booster
1993ChevroletG30Chevy Van4.3V6GASN/Aw/ Hydraulic Booster
1993ChevroletG30Sportvan7.4V8GASN/Aw/ Hydraulic Booster
1993ChevroletG30Hi-Cube6.2V8DIESELN/Aw/ Hydraulic Booster
1993ChevroletG30Beauville6.2V8DIESELN/Aw/ Hydraulic Booster
1993ChevroletG30Hi-Cube4.3V6GASN/Aw/ Hydraulic Booster
1993ChevroletG30Sportvan6.2V8DIESELN/Aw/ Hydraulic Booster
1993ChevroletG30Chevy Van7.4V8GASN/Aw/ Hydraulic Booster
1993ChevroletG30Hi-Cube7.4V8GASN/Aw/ Hydraulic Booster
1993ChevroletG30Beauville5.7V8GASN/Aw/ Hydraulic Booster
1993ChevroletG30Chevy Van5.7V8GASN/Aw/ Hydraulic Booster
1993ChevroletG30Chevy Van6.2V8DIESELN/Aw/ Hydraulic Booster
1993ChevroletG30Beauville7.4V8GASN/Aw/ Hydraulic Booster
1993ChevroletG30Sportvan5.7V8GASN/Aw/ Hydraulic Booster
1993ChevroletG30Hi-Cube5.7V8GASN/Aw/ Hydraulic Booster
1993ChevroletP30Base5.7V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1993ChevroletP30Base6.2V8DIESELN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1993ChevroletP30Base4.3V6GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1993ChevroletP30Base7.4V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Drum;
1993GMCG3500Rally Camper Special5.7V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Vandura Special4.3V6GASN/Aw/ Hydraulic Booster
1993GMCG3500Rally Camper Special6.2V8DIESELN/Aw/ Hydraulic Booster
1993GMCG3500Vandura7.4V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Vandura Special6.2V8DIESELN/Aw/ Hydraulic Booster
1993GMCG3500Rally7.4V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Rally STX6.2V8DIESELN/Aw/ Hydraulic Booster
1993GMCG3500Vandura4.3V6GASN/Aw/ Hydraulic Booster
1993GMCG3500Magnavan7.4V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Rally5.7V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Rally STX7.4V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Magnavan6.2V8DIESELN/Aw/ Hydraulic Booster
1993GMCG3500Vandura Special5.7V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Rally STX5.7V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Rally6.2V8DIESELN/Aw/ Hydraulic Booster
1993GMCG3500Rally Camper Special7.4V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Vandura6.2V8DIESELN/Aw/ Hydraulic Booster
1993GMCG3500Magnavan5.7V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Vandura Special7.4V8GASN/Aw/ Hydraulic Booster
1993GMCG3500Vandura5.7V8GASN/Aw/ Hydraulic Booster
1993GMCP3500Base6.2V8DIESELN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1993GMCP3500Base4.3V6GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1993GMCP3500Base7.4V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1993GMCP3500Base5.7V8GASN/ABore 34mm; w/ 13" X 3 1/2" Brakes | Rear: Disc; | Rear: Drum;
1992ChevroletG30Beauville4.3V6GASN/Aw/ Hydraulic Booster
1992ChevroletG30Chevy Van5.7V8GASN/Aw/ Hydraulic Booster
1992ChevroletG30Sportvan5.7V8GASN/Aw/ Hydraulic Booster
1992ChevroletG30Sportvan7.4V8GASN/Aw/ Hydraulic Booster
1992ChevroletG30Hi-Cube7.4V8GASN/Aw/ Hydraulic Booster
1992ChevroletG30Beauville7.4V8GASN/Aw/ Hydraulic Booster
1992ChevroletG30Hi-Cube5.7V8GASN/Aw/ Hydraulic Booster
1992ChevroletG30Hi-Cube6.2V8DIESELN/Aw/ Hydraulic Booster
1992ChevroletG30Chevy Van6.2V8DIESELN/Aw/ Hydraulic Booster
1992ChevroletG30Chevy Van4.3V6GASN/Aw/ Hydraulic Booster
1992ChevroletG30Hi-Cube4.3V6GASN/Aw/ Hydraulic Booster
1992ChevroletG30Beauville6.2V8DIESELN/Aw/ Hydraulic Booster
1992ChevroletG30Chevy Van7.4V8GASN/Aw/ Hydraulic Booster
1992ChevroletG30Sportvan6.2V8DIESELN/Aw/ Hydraulic Booster
1992ChevroletG30Beauville5.7V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally Camper Special6.2V8DIESELN/Aw/ Hydraulic Booster
1992GMCG3500Vandura7.4V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally6.2V8DIESELN/Aw/ Hydraulic Booster
1992GMCG3500Rally Camper Special5.7V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Vandura Special7.4V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally Camper Special7.4V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally5.7V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally STX7.4V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Vandura5.7V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Vandura6.2V8DIESELN/Aw/ Hydraulic Booster
1992GMCG3500Vandura4.3V6GASN/Aw/ Hydraulic Booster
1992GMCG3500Vandura Special5.7V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally7.4V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally STX6.2V8DIESELN/Aw/ Hydraulic Booster
1992GMCG3500Magnavan6.2V8DIESELN/Aw/ Hydraulic Booster
1992GMCG3500Magnavan7.4V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Vandura Special6.2V8DIESELN/Aw/ Hydraulic Booster
1992GMCG3500Vandura Special4.3V6GASN/Aw/ Hydraulic Booster
1992GMCG3500Rally STX5.7V8GASN/Aw/ Hydraulic Booster
1992GMCG3500Magnavan5.7V8GASN/Aw/ Hydraulic Booster
1992GMCP3500Base5.7V8GASN/A | Rear: Disc;
1992GMCP3500Base7.4V8GASN/A | Rear: Disc;
1992GMCP3500Base4.3V6GASN/A | Rear: Disc;
1992GMCP3500Base6.2V8DIESELN/A | Rear: Disc;
1991ChevroletG30Hi-Cube5.7V8GASN/Aw/ Hydraulic Booster
1991ChevroletG30Beauville7.4V8GASN/Aw/ Hydraulic Booster
1991ChevroletG30Hi-Cube7.4V8GASN/Aw/ Hydraulic Booster
1991ChevroletG30Sportvan7.4V8GASN/Aw/ Hydraulic Booster
1991ChevroletG30Beauville4.3V6GASN/Aw/ Hydraulic Booster
1991ChevroletG30Chevy Van5.7V8GASN/Aw/ Hydraulic Booster
1991ChevroletG30Chevy Van6.2V8DIESELN/Aw/ Hydraulic Booster
1991ChevroletG30Sportvan5.7V8GASN/Aw/ Hydraulic Booster
1991ChevroletG30Sportvan6.2V8DIESELN/Aw/ Hydraulic Booster
1991ChevroletG30Chevy Van4.3V6GASN/Aw/ Hydraulic Booster
1991ChevroletG30Chevy Van7.4V8GASN/Aw/ Hydraulic Booster
1991ChevroletG30Hi-Cube4.3V6GASN/Aw/ Hydraulic Booster
1991ChevroletG30Beauville6.2V8DIESELN/Aw/ Hydraulic Booster
1991ChevroletG30Hi-Cube6.2V8DIESELN/Aw/ Hydraulic Booster
1991ChevroletG30Beauville5.7V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Magnavan6.2V8DIESELN/Aw/ Hydraulic Booster
1991GMCG3500Vandura5.7V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Rally Camper Special5.7V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Magnavan5.7V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Magnavan7.4V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Rally Camper Special6.2V8DIESELN/Aw/ Hydraulic Booster
1991GMCG3500Rally STX5.7V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Rally Camper Special7.4V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Vandura Special7.4V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Rally7.4V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Rally STX6.2V8DIESELN/Aw/ Hydraulic Booster
1991GMCG3500Vandura7.4V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Vandura Special5.7V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Vandura Special4.3V6GASN/Aw/ Hydraulic Booster
1991GMCG3500Vandura6.2V8DIESELN/Aw/ Hydraulic Booster
1991GMCG3500Rally5.7V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Rally STX7.4V8GASN/Aw/ Hydraulic Booster
1991GMCG3500Vandura4.3V6GASN/Aw/ Hydraulic Booster
1991GMCG3500Rally6.2V8DIESELN/Aw/ Hydraulic Booster
1991GMCG3500Vandura Special6.2V8DIESELN/Aw/ Hydraulic Booster
1991GMCP3500Base4.3V6GASN/A | Rear: Disc;
1991GMCP3500Base3.9L4DIESELN/A | Rear: Disc;
1991GMCP3500Base6.2V8DIESELN/A | Rear: Disc;
1991GMCP3500Base7.4V8GASN/A | Rear: Disc;
1991GMCP3500Base5.7V8GASN/A | Rear: Disc;
1990ChevroletG30Sportvan6.2V8DIESELN/Aw/ Hydraulic Booster
1990ChevroletG30Hi-Cube7.4V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Sportvan7.4V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Chevy Van7.4V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Beauville6.2V8DIESELN/Aw/ Hydraulic Booster
1990ChevroletG30Chevy Van5.7V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Sportvan5.7V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Beauville5.7V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Beauville4.3V6GASN/Aw/ Hydraulic Booster
1990ChevroletG30Hi-Cube5.7V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Hi-Cube6.2V8DIESELN/Aw/ Hydraulic Booster
1990ChevroletG30Beauville7.4V8GASN/Aw/ Hydraulic Booster
1990ChevroletG30Hi-Cube4.3V6GASN/Aw/ Hydraulic Booster
1990ChevroletG30Chevy Van6.2V8DIESELN/Aw/ Hydraulic Booster
1990ChevroletG30Chevy Van4.3V6GASN/Aw/ Hydraulic Booster
1990ChevroletP30Base5.7V8GASN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Base6.2V8DIESELN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Base7.4V8GASN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Base4.3V6GASN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Step-Van6.2V8DIESELN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Step-Van3.9L4DIESELN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Base3.9L4DIESELN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Step-Van7.4V8GASN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Step-Van4.3V6GASN/Awith Hydraulic Brake System | Rear: Disc;
1990ChevroletP30Step-Van5.7V8GASN/Awith Hydraulic Brake System | Rear: Disc;
1990GMCG3500Magnavan6.2V8DIESELN/Aw/ Hydraulic Booster
1990GMCG3500Rally Camper Special5.7V8GASN/Aw/ Hydraulic Booster
1990GMCG3500Vandura Special6.2V8DIESELN/Aw/ Hydraulic Booster
1990GMCG3500Rally STX7.4V8GASN/Aw/ Hydraulic Booster
1990GMCG3500Magnavan7.4V8GASN/Aw/ Hydraulic Booster
1990GMCG3500Magnavan5.7V8GASN/Aw/ Hydraulic Booster
1990GMCG3500Rally Camper Special7.4V8GASN/Aw/ Hydraulic Booster
Product info

The ACDelco Brake Master Cylinder part number 18M1887 is designed to fit perfectly into select Chevrolet, GMC and Hummer models. As an essential component of the braking system, this master cylinder is responsible for converting the force exerted on the brake pedal into hydraulic pressure, which is then used to activate the brakes.

One of the key benefits of the ACDelco Brake Master Cylinder is its durability. Made from high-quality materials and engineered to meet or exceed OE specifications, this part is built to withstand the rigors of daily use and provide long-lasting performance. In addition, the cylinder features a corrosion-resistant finish that helps protect against rust and other forms of damage.

The ACDelco Brake Master Cylinder part number 18M1887 also comes with a number of safety features. For example, it includes a pressure differential switch, which helps ensure that the front and rear brakes are applied evenly and prevents skidding. Additionally, the cylinder is designed to work seamlessly with the ABS and traction control systems found in many modern vehicles.

If you’re looking to replace a worn or damaged brake master cylinder, the ACDelco 18M1887 is an excellent choice. It’s easy to install and provides reliable, consistent performance under a wide range of driving conditions. With its combination of durability, safety features, and high-quality construction, this master cylinder is sure to give you the peace of mind you need when you’re on the road.

About ACDelco

When it comes to top-notch auto parts, one brand that stands tall is ACDelco. Popular for its commitment to quality and innovation, ACDelco has been a trusted name in the automotive industry. At Newparts.com, we're proud to offer a wide selection of ACDelco auto parts, including ACDelco spark plugs, ACDelco alternators, and ACDelco air filters, and other ACDelco parts, all at discounted prices.

ACDelco spark plugs are engineered to deliver exceptional performance and reliability, ensuring optimal engine operation and fuel efficiency. Whether you're cruising down the highway or navigating city streets, you can trust ACDelco spark plugs to keep your engine firing on all cylinders.

When it comes to power generation, ACDelco alternators are second to none. Designed to withstand the challenges of daily driving, ACDelco alternators deliver consistent power output to keep your vehicle's electrical systems running smoothly. With ACDelco alternators from Newparts.com, you can count on reliable performance mile after mile.

In addition to spark plugs and alternators, we also offer a range of ACDelco air filters to help keep your engine breathing clean, fresh air. ACDelco air filters are designed to trap dirt, dust, and other contaminants, preventing them from entering your engine and causing damage. With a high-quality ACDelco air filter from Newparts.com, you can enjoy improved engine performance and extended engine life.

At Newparts.com, we understand that getting the right parts quickly is essential. That's why we offer fast shipping on all ACDelco auto parts, so you can get back on the road with confidence. Plus, with our discounted prices, you can save big on the parts you need to keep your vehicle running smoothly. In case you want to purchase parts by phone, feel free to call us at 855-505-2886 and our customer service team will help you out. 

Whether you're in need of spark plugs, alternators, air filters, or any other ACDelco auto parts, Newparts.com has you covered. Shop our selection today and experience the quality and reliability of ACDelco for yourself.

Specifications
New
Bleeder Hoses IncludedYes
Brake Booster IncludedNo
Master Cylinder Bore Diameter1.3385826772
Master Cylinder Cap IncludedYes
Master Cylinder MaterialCast Iron
Mounting Bracket IncludedNo
Mounting Hole Quantity2
Port Quantity2
Primary Outlet Thread Diameter0.5
Push Rod IncludedNo
Reservoir IncludedYes
Secondary Outlet Thread Diameter0.5625
Warranty
We offer a 2-year warranty on all parts that we sell. If the part fails within 2 years of purchase, please contact us for instructions to replace it. The warranty does not cover normal wear and tear or improper installation. On many parts, we also offer Extend product protection, which is a way to add up to 3 additional years for 5 total years of worry free coverage. Select your preferred term length and you're covered!
Delivery & Returns

Delivery Info

Newparts.com is your go to store for all parts and accessories at the best price and delivered quickly. Every order we ship receives a tracking number so that you can watch it all the way until it reaches your door. We only ship using the major shipping carriers like FedEx, UPS and USPS to ensure quick and safe delivery of your new car parts order.

Returns Info

Newparts.com offers a thirty (30) day return for refund for all items purchased through Newparts.com. To qualify for return and refund, all items must be new and in their original manufacturers box. To initiate a return, please contact our customer service. This information is only a summary. Complete shipping and return policy information can be found in our web site policies.

Free shipping Icon

FREE SHIPPING

Available on all kits, sets & Bison performance products