[Vehicle Fitment-1]: Compatible with Cadillac Escalade 2003-2006, Escalade ESV 2003-2006, Escalade EXT 2003-2006; Compatible with Chevrolet Avalanche 1500 2003-2006, Silverado 1500 2003-2006, Silverado 1500 Classic 2007, Silverado 1500 HD 2003/2005-2006, Silverado 3500 2003-2005, Suburban 1500 2003-2006, Suburban 2500 2003-2006, Tahoe 2003-2006, Sonora 2003-2006 --- It comes without Master Cylinder [Vehicle Fitment-2]: Compatible with GMC Sierra 1500 2003-2006, Sierra 1500 Classic 2007, Sierra 1500 HD 2003/2005-2006, Sierra 3500 2003-2005, Yukon 2003-2006, Yukon XL 1500 2003-2006, Yukon XL 2500 2003-2006 --- It comes without Master Cylinder [Reference Number]: The A-Premium Power Brake Booster's reference number: 54-74826, 5474826, 18044447186, 18047186, 88967101, 89040683, DL178676 [Specification]: ①Brake Booster Diaphragm Style: Dual; ②Diaphragm Diameter: 10.915(IN)/277.241(MM); ③Master Cylinder Included: No; ④Master Cylinder Stud Thread Size: M10x1.5; ⑤Material: Steel [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted power brake booster. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.

A-premium Vacuum Power Brake Boosters are an ideal choice to replace your Vacuum Power Brake Boosters. All Vacuum Power Brake Boosters meet or exceed OEM specifications Due to high manufacturing standard, it will come with one year quality guarantee

Compatible with Cadillac Models:
2003-2006 Escalade/ Escalade ESV/ Escalade EXT

Compatible with Chevrolet Models:
2003-2006 Avalanche 1500
2003-2004 Silverado 1500
2005-2006 Silverado 1500 with Brake Code JC3 or with Brake Code JC4
2007-2007 1500 Classic with Brake Code JC3 or with Brake Code JC4
2003-2003, 2005-2006 Silverado 1500 HD
2003-2005 Silverado 3500
2003-2006 Suburban 1500/ Suburban 2500/ Tahoe

Compatible with GMC Models:
2003-2004 Sierra 1500
2005-2006 Sierra 1500 with Brake Code JC3 or with Brake Code JC4
2007-2007 Sierra 1500 Classic with Brake Code JC3 or with Brake Code JC4
2003-2003, 2005-2006 Sierra 1500 HD
2003-2005 Sierra 3500
2003-2006 Yukon/ Yukon XL 2500
2004-2006 Yukon XL 1500
2003-2003 Yukon XL 1500 Standard Pump has 1 Pressure Line and 1 Return Line

Specifications:
Brake Booster Diaphragm Style: Dual
Diaphragm Diameter (in): 10.915
Master Cylinder Included: No
Material: Steel
Master Cylinder Stud Thread Size: M10x1.5

OEM Number: 54-74826, 5474826, 18044447186, 18047186, 88967101, 89040683, DL178676
Quantity Sold: One Piece
Note: It comes without Master Cylinder. with Vacuum Booster