The ACDelco Power Brake Booster Check Valve, part number 179-1266, is essential for maintaining your vehicle's braking system integrity. Specifically designed to fit a wide range of GM vehicles, this power brake booster check valve acts as a one-way gate preventing air from disrupting the vacuum booster. This ensures that your vehicle maintains consistent, reliable braking power even when the engine is off or in case of a vacuum hose leak.Manufactured to General Motors' high standards, this component guarantees the seamless performance, durability, and service life of your GM vehicle. Whether you're a DIY enthusiast or a seasoned mechanic, installing the 179-1266 check valve will restore and enhance your braking system's effectiveness, ensuring safety and peace of mind on every drive. This part is compatible with brands like Buick, Chevrolet, Cadillac, and more, spanning model years from 1986 to 2011.

• GM-Recommended for superior fit and performance
• Manufactured to GM Original Equipment standards
• Prevents air intrusion into the vacuum booster
• Ensures consistent braking even when engine is off
• Fits a wide range of GM models across multiple years

Fitting Outlet Angle:	90 Degree
Grommet End Outside Diameter:	0.64
Height (in):	1.5
Hose End Outside Diameter:	0.54
Length (in):	3.5
Material:	Plastic
Outlet Quantity:	1
Programming Required:	No
Weight (lb):	0.32
Width (in):	2.2

• 1986-2005 Buick Century
• 1986-1990 Chevrolet Celebrity
• 1986-1994 Oldsmobile Cutlass Ciera
• 1986-1991 Pontiac 6000
• 1987-1990 Buick Electra
• 1987-2005 Buick LeSabre
• 1987-1993 Buick Riviera
• 1987-1988 Buick Skyhawk
• 1987-1998 Buick Skylark
• 1987 Buick Somerset
• 1987 Cadillac Commercial Chassis
• 1987-2005 Cadillac DeVille
• 1987-2002 Cadillac Eldorado
• 1987-1992 Cadillac Fleetwood
• 1987-1999 Cadillac Seville
• 1987-1996 Chevrolet Beretta
• 1987-2002 Chevrolet Camaro
• 1987-2005 Chevrolet Cavalier
• 1987-1996 Chevrolet Corsica
• 1987-1996 Oldsmobile 98
• 1987 Oldsmobile Calais
• 1987 Oldsmobile Cutlass Cruiser
• 1987-1991 Oldsmobile Delta 88
• 1987-1988 Oldsmobile Firenza
• 1987-1992 Oldsmobile Toronado
• 1987-1999 Pontiac Bonneville
• 1987-1988 Pontiac Fiero
• 1987-2002 Pontiac Firebird
• 1987-2005 Pontiac Grand Am
• 1987-1994 Pontiac Sunbird
• 1988 Buick Reatta
• 1988-2004 Buick Regal
• 1995-1999 Buick Riviera
• 1994-1996 Cadillac Fleetwood
• 1988-1999 Chevrolet C1500
• 1988-2000 Chevrolet C2500
• 1988-1999 Chevrolet K1500
• 1988-2000 Chevrolet K2500
• 1988-1999 GMC C1500
• 1988-2000 GMC C2500
• 1988-1999 GMC K1500
• 1988-2000 GMC K2500
• 1988-1991 Oldsmobile Cutlass Calais
• 1989-1993 Oldsmobile Cutlass Cruiser
• 1988-1997 Oldsmobile Cutlass Supreme
• 1988-2008 Pontiac Grand Prix
• 1990-1996 Cadillac Commercial Chassis
• 1991 Buick Reatta
• 1990 Chevrolet C3500
• 1990 Chevrolet K3500
• 1990-1995 Chevrolet LLV
• 1990-2001 Chevrolet Lumina
• 1990-1996 Chevrolet Lumina APV
• 1990 GMC C3500
• 1990 GMC K3500
• 1990-2004 Oldsmobile Silhouette
• 1990-1998 Pontiac Trans Sport
• 1991-2005 Buick Park Avenue
• 1991-2004 Chevrolet S10
• 1991-1994 Chevrolet S10 Blazer
• 1991 GMC S15 Jimmy
• 1991-2004 GMC Sonoma
• 1991 GMC Syclone
• 1991-1994 Oldsmobile Bravada
• 1992-2005 Chevrolet Blazer
• 1992-1999 Chevrolet C1500 Suburban
• 1992-1999 Chevrolet C2500 Suburban
• 1992-1999 Chevrolet K1500 Suburban
• 1992-1999 Chevrolet K2500 Suburban
• 1992-1999 GMC C1500 Suburban
• 1992-1999 GMC C2500 Suburban
• 1992-2005 GMC Jimmy
• 1992-1999 GMC K1500 Suburban
• 1992-1999 GMC K2500 Suburban
• 1992-1993 GMC Typhoon
• 1992-2002 GMC Yukon
• 1992-1999 Oldsmobile 88
• 1992-1998 Oldsmobile Achieva
• 1996-2004 Oldsmobile Bravada
• 2005 Pontiac Bonneville
• 1993 Cadillac 60 Special
• 1993 Cadillac Allante
• 1993-1994 Chevrolet Astro
• 1993-1994 GMC Safari
• 1994-1996 Buick Commercial Chassis
• 1994-1996 Buick Roadmaster
• 1994-1996 Chevrolet Caprice
• 1994-1995 Chevrolet G10
• 1994-1995 Chevrolet G20
• 1994-1996 Chevrolet G30
• 1994-1995 GMC G1500
• 1994-1995 GMC G2500
• 1994-1996 GMC G3500
• 1995-1996 Chevrolet Impala
• 1995-2007 Chevrolet Monte Carlo
• 1995-2002 Chevrolet Tahoe
• 1995-1999 Oldsmobile Aurora
• 1995-2005 Pontiac Sunfire
• 1996-2002 Chevrolet Express 1500
• 1996-2002 Chevrolet Express 2500
• 1996-2002 GMC Savana 1500
• 1996-2002 GMC Savana 2500
• 2001-2003 Oldsmobile Aurora
• 1996-1999 Oldsmobile LSS
• 1997-2008 Chevrolet Corvette
• 1997-2008 Chevrolet Malibu
• 1997-2005 Chevrolet Venture
• 1997-1999 Oldsmobile Cutlass
• 1997-1998 Oldsmobile Regency
• 2000-2008 Chevrolet Impala
• 1998-2002 Oldsmobile Intrigue
• 1999-2000 Cadillac Escalade
• 1999-2002 Chevrolet Silverado 1500
• 1999-2002 GMC Sierra 1500
• 1999-2004 Oldsmobile Alero
• 1999-2009 Pontiac Montana
• 2002 Cadillac Escalade
• 2000-2002 Chevrolet Suburban 1500
• 2000-2002 GMC Yukon XL 1500
• 2005-2006 Chevrolet Silverado 1500
• 2001-2002 Chevrolet Silverado 1500 HD
• 2005-2006 GMC Sierra 1500
• 2001-2002 GMC Sierra 1500 HD
• 2001-2005 Pontiac Aztek
• 2002-2007 Buick Rendezvous
• 2002 Cadillac Escalade EXT
• 2002 Chevrolet Avalanche 1500
• 2002-2005 Chevrolet Trailblazer
• 2002-2005 Chevrolet Trailblazer EXT
• 2002-2005 GMC Envoy
• 2002-2005 GMC Envoy XL
• 2003-2008 Cadillac CTS
• 2003-2005 Chevrolet SSR
• 2007-2008 Chevrolet Trailblazer
• 2007-2008 GMC Envoy
• 2003-2005 Isuzu Ascender
• 2004-2005 Buick Rainier
• 2004-2009 Cadillac SRX
• 2004-2008 Cadillac XLR
• 2004-2005 Chevrolet Classic
• 2004-2008 Chevrolet Colorado
• 2004-2008 GMC Canyon
• 2004-2005 GMC Envoy XUV
• 2007-2008 Isuzu Ascender
• 2005-2009 Buick Allure
• 2005-2009 Buick LaCrosse
• 2007 Buick Rainier
• 2005-2007 Buick Terraza
• 2005-2008 Cadillac STS
• 2005-2010 Chevrolet Cobalt
• 2005-2009 Chevrolet Uplander
• 2005-2007 Pontiac G6
• 2005-2006 Pontiac Pursuit
• 2005 Saab 9-7x
• 2005-2007 Saturn Relay
• 2006-2008 Buick Lucerne
• 2006-2011 Cadillac DTS
• 2006 Isuzu i-280
• 2006 Isuzu i-350
• 2007-2008 Saab 9-7x
• 2007 Chevrolet Silverado 1500 Classic
• 2007 GMC Sierra 1500 Classic
• 2007-2008 Isuzu i-290
• 2007-2008 Isuzu i-370
• 2007-2010 Pontiac G5
• 2007-2008 Saturn Aura