Description:

[Vehicle Fitment-1]: Compatible with Chevrolet Avalanche 2500/Silverado 2500 HD/Silverado 3500/Suburban 2500 2003-2006, Express 2500/3500 2003-2007, Silverado 1500 2003-2005/2007, Silverado 1500 Classic/1500 HD Classic 2007, Silverado 1500 HD 2003, Silverado 2500 2003-2004. [Vehicle Fitment-2]: Compatible with GMC Savana 2500/3500 2003-2007, Sierra 1500 2003-2005/2007, Sierra 1500 Classic/1500 HD Classic 2007, Sierra 1500 HD 2003, Sierra 2500 2003-2004, Sierra 2500 HD/3500/Yukon XL 2500 2003-2006. [Reference Number]: The A-Premium Brake Master Cylinder's reference number: M630334, 18047512, 19209234. Before placing an order, verify that the part is compatible with your vehicle using the compatibility system.. [Specification]: Reservoir Included: Yes; Sensor Included: Yes; Material: Aluminum; Master Cylinder Bore Diameter: 37 mm; Rearward Outlet Size: 1/2-20; Secondary Outlet Thread Diameter: 1/2-20.