[Vehicle Fitment-1]: Compatible with Chevrolet Avalanche 1500/Suburban 1500 2003, Avalanche 2500/Suburban 2500/Silverado 1500/Silverado 2500 HD/Silverado 3500 2003-2006, Silverado 1500 Classic/Silverado 1500 HD Classic/Silverado 2500 HD Classic/Silverado 3500 Classic 2007, Silverado 2500 2003-2004, Silverado 1500 HD 2003/2005-2006 [Vehicle Fitment-2]: Compatible with GMC Yukon XL 2500 2003-2006, Sierra 1500/Sierra 2500 HD/Sierra 3500 2003-2006, Sierra 1500 Classic/Sierra 1500 HD Classic/Sierra 2500 HD Classic/Sierra 3500 Classic 2007, Sierra 1500 HD 2003/2005-2006, Sierra 2500 2003-2004 --- For 2003 Chevrolet Avalanche 1500 fit GM Brake Code JH6 or Brake Code JH5; For Suburban 1500 & Suburban 2500 & Yukon XL 2500 fit GM Brake Code JH6 or GM Brake Code JH7; It comes without Master Cylinder. [Reference Number]: The A-Premium Power Brake Booster's reference number: 52-7371, 527371, 15126867, 15167550, 15183760, 15212480, 15814411, 15854059, 19371356 [Specification]: ① Master Cylinder Included: No; ② Master Cylinder Stud Thread Size: M10x1.5; ③ Material: Cast Iron [Superior Quality]: Power Brake Booster are coated with anti-rust coating, which can effectively prolong the lifespan. Premium craftsmanship and materials ensure superior quality and durability, and excellent performance enhances the whole braking system. A-premium Hydro-Boost Power Brake Boosters are an ideal choice to replace your broken Hydro-Boost Power Brake Boosters. All Hydro-Boost Power Brake Boosters meet or exceed OEM specifications. Due to high manufacturing standard, it will come with one year quality guarantee.

Compatible with Chevrolet Models:
Avalanche 1500 2003
GM Brake Code JH6; with Brake Code JH5; without Master Cylinder

Suburban 1500 2003
Suburban 2500 2003-2006

Compatible with GMC Models:
Yukon XL 2500 2003-2006
GM Brake Code JH6; GM Brake Code JH7; without Master Cylinder

Compatible with Chevrolet Models:
Avalanche 2500/Silverado 1500 2003-2006
Silverado 1500 Classic 2007
Silverado 1500 HD 2005-2006
Silverado 1500 HD 2003
Silverado 1500 HD Classic 2007
Silverado 2500 2003-2004
Silverado 2500 HD/Silverado 3500 2003-2006
Silverado 2500 HD Classic 2007
Silverado 3500 Classic 2007

Compatible with GMC Models:
Sierra 1500 2003-2006
Sierra 1500 Classic 2007
Sierra 1500 HD 2005-2006
Sierra 1500 HD 2003
Sierra 1500 HD Classic 2007
Sierra 2500 2003-2004
Sierra 2500 HD/Sierra 3500 2003-2006
Sierra 2500 HD Classic/Sierra 3500 Classic 2007
without Master Cylinder

OEM Number: 15126867, 15167550, 15183760, 15212480, 15814411, 15854059, 19371356, 52-7371, 527371
Quantity Sold: One Piece
Note: It doesn't fit the Model with Master Cylinder; It fits the Model with Hydro-Boost; For 2003 Chevrolet Avalanche 1500 fit GM Brake Code JH6, with Brake Code JH5; For Suburban 1500 & Suburban 2500 & Yukon XL 2500 fit GM Brake Code JH6, GM Brake Code JH7; GM Brake Codes are on the "Service Parts Identification" Sticker