[Perfect Fitment-1]: Compatible with Buick Allure/LaCrosse 2009, Century 2003/2005 (4-Wheel ABS), Century 1999-2002, Regal 1999-2002; Compatible with Chevrolet Venture 2000-2005, Monte Carlo 2000-2002, Monte Carlo 2003-2005 (V6 3.8L); Compatible with Oldsmobile Silhouette 2000-2004; Compatible with Pontiac Grand Prix 1998-2002, Grand Prix 2003-2004 (4-Wheel ABS), Grand Prix 2006 (4-Wheel ABS; Base/GT), Montana 2000-2004, Montana 2005 (Base) [Perfect Fitment-2]: Compatible with Chevrolet Impala 2000-2002 (4-Wheel ABS; Light Duty Brakes), Impala 2003-2005 (4-Wheel ABS; V6 3.8L; Light Duty Brakes); Compatible with Buick Regal 2003-2004 (4-Wheel ABS; Rear Drum Brakes); Compatible with Oldsmobile Intrigue 2000-2002 (without Active Brake Control) [Perfect Fitment-3]: Compatible with Pontiac Grand Prix 2005 (GT /GTP Submodel), Grand Prix 2007 (GT/Base Submodel), Grand Prix 2008 (Base Submodel); Compatible with Buick Allure 2005-2008, LaCrosse 2005-2008 ---It fits the model with RPO Code JL9, 4 Wheel Disc, with ABS [Reference Number]: The A-Premium Brake Master Cylinder's reference number: M390401, 133183, 18026277, 18039288, 18060780. Before placing an order, verify that the part is compatible with your vehicle using the compatibility system. [Specification]: Material: Aluminum; Master Cylinder Bore Diameter: 1 inch; Rearward Outlet Size: M12 X 1.0; Secondary Outlet Thread Diameter: M12 X 1.0 A-premium Brake Master Cylinders are an ideal choice to replace your broken Brake Master Cylinders. All Brake Master Cylinders meet or exceed OEM specifications. Due to high manufacturing standard, it will come with one year quality guarantee.

Compatible with Buick Models:
2009-2009 Allure
2005-2008 Allure withRPO Code JL9 (Power Brakes, 4 Wheel Disc, withABS)
2003-2003/2005-2005 Century 4-Wheel ABS
1999-2002 Century
2009-2009 LaCrosse
2005-2008 LaCrosse with RPO Code JL9 (Power Brakes, 4 Wheel Disc, with ABS)
1999-2002 Regal
2003-2004 Regal 4-Wheel ABS; Rear Drum Brakes

Compatible with Chevrolet Models:
2002-2002 Impala 4-Wheel ABS; Rear Drum Brakes; Light Duty Brakes
2000-2001 Impala 4-Wheel ABS; Light Duty Brakes
2003-2005 Impala 4-Wheel ABS; V6 231 3.8L (3800cc); Light Duty Brakes
2000-2002 Monte Carlo
2003-2005 Monte Carlo V6 231 3.8L (3800cc)

Compatible with Oldsmobile Models:
2000-2002 Intrigue without Active Brake Control
2000-2004 Silhouette

Compatible with Pontiac Models:
2005-2005 Grand Prix GT Submodel; with RPO Code JL9 (Power Brakes, 4 Wheel Disc, withABS)
2005-2005 Grand Prix GTP Submodel; with RPO Code JL9 (Power Brakes, 4 Wheel Disc, withABS)
2006-2006 Grand Prix 4-Wheel ABS; Base Submodel
2006-2006 Grand Prix 4-Wheel ABS; GT Submodel
2007-2007 Grand Prix GT Submodel; with RPO Code JL9 (Power Brakes, 4 Wheel Disc, withABS)
1998-2002/2007-2008 Grand Prix
2003-2004 Grand Prix 4-Wheel ABS
2005-2005 Montana Base Submodel
2000-2004 Montana

OEM Number: M390401, 133183, 18026277, 18039288, 18060780
Quantity Sold: One Piece
Note: It comes with 1 Inch Bore, Reservoir and Sensor