Cooling system and radiator cap testers need the correct adapter to seal against each filler neck or cap design. This Gates adapter connects the tester to the application listed so you can pressure test the system or the cap accurately.

Gates 31391 Radiator Cap Tester Adapter Features:

• Connects a Cooling System or Radiator Cap Tester to the Application
• Expands Tester Coverage to More Vehicles
• Application Options Apply on Some Vehicles, Check the Fitment Tab Before Ordering
• Sold Individually

Vehicle Applications:

• 2004-2007 Buick Rainier 4.2L L6, 5.3L V8
• 2005-2008 Buick Allure 3.6L V6, 3.8L V6, 5.3L V8
• 2005-2018 Buick LaCrosse 2.4L L4, 3.0L V6, 3.6L V6, 3.8L V6, 5.3L V8
• 2006-2011 Buick Lucerne 3.8L V6, 3.9L V6, 4.6L V8
• 2006-2007 Buick Terraza 3.9L V6
• 2008-2018 Buick Enclave 3.6L V6
• 2011-2017 Buick Regal 2.0L L4, 2.4L L4
• 2012-2017 Buick Verano 2.0L L4, 2.4L L4
• 2013-2017 Buick Encore 1.4L L4
• 2016-2018 Buick Cascada 1.6L L4
• 2016-2018 Buick Envision 2.0L L4, 2.5L L4
• 2002-2013 Cadillac Escalade 5.3L V8, 6.0L V8, 6.2L V8
• 2002-2013 Cadillac Escalade EXT 6.0L V8, 6.2L V8
• 2003-2018 Cadillac CTS 2.0L L4, 2.8L V6, 3.0L V6, 3.2L V6, 3.6L V6, 5.7L V8, 6.0L V8, 6.2L V8
• 2003-2013 Cadillac Escalade ESV 6.0L V8, 6.2L V8
• 2004-2012 Cadillac SRX 2.8L V6, 3.0L V6, 3.6L V6, 4.6L V8
• 2004-2009 Cadillac XLR 4.4L V8, 4.6L V8
• 2005-2010 Cadillac STS 3.6L V6, 4.4L V8, 4.6L V8
• 2006-2011 Cadillac DTS 4.6L V8
• 2015-2018 Cadillac ATS 2.0L L4, 2.5L L4, 3.6L V6
• 2016-2019 Cadillac CT6 2.0L L4, 3.0L V6, 3.6L V6
• 1999 Chevrolet C2500 Suburban 7.4L V8
• 1999-2005 Chevrolet Cavalier 2.2L L4, 2.4L L4
• 1999 Chevrolet K2500 Suburban 7.4L V8
• 1999-2018 Chevrolet Malibu 1.8L L4, 2.0L L4, 2.2L L4, 2.4L L4, 2.5L L4, 3.1L V6, 3.5L V6, 3.6L V6, 3.9L V6
• 1999-2013 Chevrolet Silverado 1500 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8, 6.2L V8
• 1999-2013 Chevrolet Silverado 2500 4.8L V8, 5.3L V8, 6.0L V8
• 2000-2012 Chevrolet Suburban 1500 5.3L V8, 5.7L V8, 6.0L V8
• 2000-2012 Chevrolet Suburban 2500 5.3L V8, 6.0L V8, 8.1L V8
• 2000-2012 Chevrolet Tahoe 4.8L V8, 5.3L V8, 6.0L V8, 6.2L V8
• 2001-2006 Chevrolet Silverado 1500 HD 6.0L V8
• 2001-2018 Chevrolet Silverado 2500 HD 6.0L V8, 6.6L V8, 8.1L V8
• 2001-2012 Chevrolet Silverado 3500 6.0L V8, 6.6L V8, 8.1L V8
• 2002-2006 Chevrolet Avalanche 1500 5.3L V8
• 2002-2006 Chevrolet Avalanche 2500 8.1L V8
• 2002-2009 Chevrolet Trailblazer 4.2L L6, 5.3L V8, 6.0L V8
• 2002-2006 Chevrolet Trailblazer EXT 4.2L L6, 5.3L V8
• 2003-2009 Chevrolet C5500 Kodiak 6.6L V8, 8.1L V8
• 2003-2012 Chevrolet Express 1500 4.3L V6, 5.3L V8
• 2003-2018 Chevrolet Express 2500 2.8L L4, 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8, 6.6L V8
• 2003-2018 Chevrolet Express 3500 2.8L L4, 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8, 6.6L V8
• 2003-2006 Chevrolet SSR 5.3L V8, 6.0L V8
• 2003 Chevrolet Sonora 5.3L V8
• 2004 Chevrolet Cargo Van 6.0L V8
• 2004-2005 Chevrolet Classic 2.2L L4
• 2004-2019 Chevrolet Colorado 2.5L L4, 2.8L L4, 2.9L L4, 3.5L L5, 3.6L V6, 3.7L L5, 5.3L V8
• 2004-2013 Chevrolet Impala 3.4L V6, 3.5L V6, 3.6L V6, 3.8L V6, 3.9L V6, 5.3L V8
• 2004-2007 Chevrolet Monte Carlo 3.4L V6, 3.5L V6, 3.8L V6, 3.9L V6, 5.3L V8
• 2005-2010 Chevrolet Cobalt 2.0L L4, 2.2L L4, 2.4L L4
• 2005-2012 Chevrolet Corvette 6.0L V8, 6.2L V8, 7.0L V8
• 2005-2016 Chevrolet Equinox 2.4L L4, 3.0L V6, 3.4L V6, 3.6L V6
• 2006-2011 Chevrolet HHR 2.0L L4, 2.2L L4, 2.4L L4
• 2006-2008 Chevrolet Uplander 3.9L V6
• 2007-2012 Chevrolet Avalanche 5.3L V8, 6.0L V8
• 2007 Chevrolet Silverado 1500 Classic 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8
• 2007 Chevrolet Silverado 1500 HD Classic 6.0L V8
• 2007 Chevrolet Silverado 2500 HD Classic 6.0L V8, 6.6L V8, 8.1L V8
• 2007 Chevrolet Silverado 3500 Classic 6.0L V8, 6.6L V8, 8.1L V8
• 2007-2018 Chevrolet Silverado 3500 HD 6.0L V8, 6.6L V8
• 2009 Chevrolet C6500 Kodiak 7.2L L6, 7.8L L6, 8.1L V8
• 2009-2018 Chevrolet Express Cargo 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8
• 2009-2012 Chevrolet Express Pasajeros 5.3L V8, 6.0L V8
• 2009-2018 Chevrolet Traverse 3.6L V6
• 2010-2018 Chevrolet Camaro 2.0L L4, 3.6L V6, 6.2L V8
• 2010-2015 Chevrolet Cruze 1.4L L4, 1.8L L4
• 2010-2012 Chevrolet Express 4500 6.0L V8, 6.6L V8
• 2011-2012 Chevrolet Caprice 3.6L V6, 6.0L V8
• 2011-2016 Chevrolet Spark 1.2L L4, 1.4L L4
• 2012 Chevrolet Captiva Sport 2.4L L4, 3.0L V6
• 2012-2016 Chevrolet Sonic 1.4L L4, 1.8L L4
• 2012 Chevrolet Volt 1.4L L4
• 2016 Chevrolet Malibu Limited 2.5L L4
• 2017 Chevrolet SS 6.2L V8
• 2013-2015 Dodge Dart 1.4L L4, 2.0L L4, 2.4L L4
• 2004-2011 Freightliner Columbia 11.1L, 12.5L, 12.8L L6, 14.6L L6, 14.8L L6
• 2005-2007 Freightliner Century Class 12.5L, 14.6L L6
• 2006-2016 Freightliner Coronado 12.8L L6, 14.0L L6, 14.6L L6, 14.8L L6, 14.9L L6, 15.6L
• 2008-2019 Freightliner Cascadia 11.9L, 12.8L L6, 14.0L L6, 14.6L L6, 14.8L L6, 14.9L L6, 15.6L
• 2011-2016 Freightliner M2 106 6.7L L6, 8.3L L6, 8.9L L6
• 2011-2016 Freightliner M2 112 8.3L L6, 8.9L L6, 12.8L L6
• 2011-2016 Freightliner Sport Chassis 12.8L L6
• 2012-2018 Freightliner 108SD 6.7L L6, 8.3L L6, 8.9L L6
• 2012-2016 Freightliner 114SD 8.9L L6, 11.9L
• 2014-2016 Freightliner 122SD 12.8L L6, 14.8L L6, 14.9L L6, 15.6L
• 1999 GMC C2500 Suburban 7.4L V8
• 1999 GMC K2500 Suburban 7.4L V8
• 1999-2012 GMC Sierra 1500 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8, 6.2L V8
• 1999-2004 GMC Sierra 2500 5.3L V8, 6.0L V8
• 2000-2012 GMC Yukon 4.8L V8, 5.3L V8, 6.0L V8, 6.2L V8
• 2000-2012 GMC Yukon XL 1500 5.3L V8, 6.0L V8, 6.2L V8
• 2000-2012 GMC Yukon XL 2500 6.0L V8, 8.1L V8
• 2001-2006 GMC Sierra 1500 HD 6.0L V8
• 2001-2012 GMC Sierra 2500 HD 6.0L V8, 6.6L V8, 8.1L V8
• 2001-2006 GMC Sierra 3500 6.0L V8, 6.6L V8, 8.1L V8
• 2002-2009 GMC Envoy 4.2L L6, 5.3L V8
• 2002-2006 GMC Envoy XL 4.2L L6, 5.3L V8
• 2003-2006 GMC C4500 Topkick 6.6L V8, 8.1L V8
• 2003-2009 GMC C5500 Topkick 6.6L V8, 8.1L V8
• 2003-2012 GMC Savana 1500 4.3L V6, 5.3L V8
• 2003-2018 GMC Savana 2500 2.8L L4, 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8, 6.6L V8
• 2003-2018 GMC Savana 3500 2.8L L4, 4.8L V8, 6.0L V8, 6.6L V8
• 2004-2009 GMC C6500 Topkick 7.2L L6, 7.8L L6, 8.1L V8
• 2004-2018 GMC Canyon 2.5L L4, 2.8L L4, 2.9L L4, 3.5L L5, 3.7L L5, 5.3L V8
• 2004-2005 GMC Envoy XUV 4.2L L6, 5.3L V8
• 2005-2007 GMC C7500 Topkick 7.2L L6, 7.8L L6, 8.1L V8
• 2007-2018 GMC Acadia 2.5L L4, 3.6L V6
• 2007-2012 GMC Sierra 5.3L V8, 6.2L V8
• 2007 GMC Sierra 1500 Classic 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8
• 2007 GMC Sierra 1500 HD Classic 6.0L V8
• 2007 GMC Sierra 2500 HD Classic 6.0L V8, 6.6L V8, 8.1L V8
• 2007 GMC Sierra 3500 Classic 6.0L V8, 6.6L V8, 8.1L V8
• 2007-2012 GMC Sierra 3500 HD 6.0L V8, 6.6L V8
• 2010-2014 GMC Savana 4500 6.0L V8, 6.6L V8
• 2010-2017 GMC Terrain 2.4L L4, 3.0L V6
• 2003-2009 Hummer H2 6.0L V8, 6.2L V8
• 2006-2010 Hummer H3 3.5L L5, 3.7L L5, 5.3L V8
• 2009-2010 Hummer H3T 3.7L L5, 5.3L V8
• 2003-2008 Isuzu Ascender 4.2L L6, 5.3L V8
• 2006 Isuzu i-280 2.8L L4
• 2006 Isuzu i-350 3.5L L5
• 2007-2008 Isuzu i-290 2.9L L4
• 2007-2008 Isuzu i-370 3.7L L5
• 2014 Jeep Cherokee 2.4L L4, 3.2L V6
• 2003-2013 Mazda 6 2.5L L4, 3.0L V6, 3.7L V6
• 1999-2004 Oldsmobile Alero 2.2L L4, 2.4L L4, 3.4L V6
• 1999 Oldsmobile Cutlass 3.1L V6
• 2000-2002 Oldsmobile Intrigue 3.5L V6
• 2002-2004 Oldsmobile Bravada 4.2L L6
• 1999-2005 Pontiac Grand Am 2.2L L4, 2.4L L4, 3.4L V6
• 1999-2005 Pontiac Sunfire 2.2L L4, 2.4L L4
• 2004-2008 Pontiac Grand Prix 3.8L V6, 5.3L V8
• 2004-2010 Pontiac Matiz 1.0L L4
• 2005-2010 Pontiac G6 2.4L L4, 3.5L V6, 3.6L V6, 3.9L V6
• 2005-2006 Pontiac Pursuit 2.2L L4, 2.4L L4
• 2006 Pontiac G4 2.2L L4, 2.4L L4
• 2006-2008 Pontiac Montana 3.9L V6
• 2006-2009 Pontiac Solstice 2.0L L4, 2.4L L4
• 2006-2009 Pontiac Torrent 3.4L V6, 3.6L V6
• 2007-2009 Pontiac G5 2.2L L4, 2.4L L4
• 2009 Pontiac G8 3.6L V6, 6.0L V8, 6.2L V8
• 2013-2014 Ram 2500 6.4L V8, 6.7L L6
• 2013-2014 Ram 3500 6.4L V8, 6.7L L6
• 2013-2014 Ram 4500 6.4L V8, 6.7L L6
• 2013-2014 Ram 5500 6.4L V8, 6.7L L6
• 2014 Ram 1500 3.0L V6
• 2005-2009 Saab 9-7x 4.2L L6, 5.3L V8, 6.0L V8
• 2003-2007 Saturn Ion 2.0L L4, 2.2L L4, 2.4L L4
• 2003-2009 Saturn Vue 2.2L L4, 2.4L L4, 3.0L V6, 3.5L V6, 3.6L V6
• 2006-2007 Saturn Relay 3.9L V6
• 2007-2009 Saturn Aura 2.4L L4, 3.5L V6, 3.6L V6
• 2007-2009 Saturn Outlook 3.6L V6
• 2007-2009 Saturn Sky 2.0L L4, 2.4L L4
• 2005-2010 Sterling Truck A9500 8.8L L6, 12.7L L6, 14.0L L6
• 2005-2010 Sterling Truck L7500 7.2L L6, 8.3L L6, 8.8L L6
• 2005-2010 Sterling Truck L8500 7.2L L6, 8.3L L6, 8.8L L6, 8.9L L6
• 2005-2008 Sterling Truck LT7500 7.2L L6, 8.3L L6, 8.8L L6
• 2005-2008 Sterling Truck LT8500 7.2L L6, 8.3L L6, 8.8L L6
• 2007-2008 Sterling Truck AT9500 12.5L, 12.7L L6, 14.6L L6
• 2007-2010 Sterling Truck Acterra 6.7L L6, 7.2L L6, 8.3L L6
• 2007 Sterling Truck Acterra 5500 7.2L L6, 8.3L L6
• 2007 Sterling Truck Acterra 6500 7.2L L6, 8.3L L6
• 2007 Sterling Truck Acterra 7500 7.2L L6, 8.3L L6
• 2007-2008 Sterling Truck L9500 8.8L L6, 11.1L, 12.5L
• 2007-2008 Sterling Truck LT9500 8.8L L6, 11.1L, 12.5L, 14.0L L6, 14.6L L6
• 2007-2009 Suzuki XL-7 3.6L V6
• 2012-2017 Western Star 4700SF 8.3L L6, 8.9L L6, 12.8L L6
• 2013-2016 Western Star 4700SB 8.3L L6, 8.9L L6, 12.8L L6
• 2016 Western Star 5700XE 15.6L