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Vacuum Closes Bypass Heater Valve - Four Seasons 74781

Vacuum Closes Bypass Heater Valve - Four Seasons 74781

Item #: WBB2456243

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Vacuum Closes Bypass Heater Valve
  • Application specific design
  • Pressure tested to ensure leak free design
  • Temperature tested to 270 degrees F
  • Vacuum controlled

Application Summary: Cadillac Escalade (00-99) >> Chevy Fullsize Pickup (00-95); G Series Fullsize Van / Express (18-97); Medium Duty Van (17-10); Suburban / Blazer / Tahoe (00-95) >> GMC Fullsize Pickup (00-95); G Series Fullsize Van / Savana (18-97); Suburban

Vehicle Fitment: Make\Model   Year(s)
Cadillac+ Expand List– Hide List
  • Escalade   1999-2000
Chevrolet+ Expand List– Hide List
  • C1500   1995-2000
  • C1500 Suburban   1995-1999
  • C2500   1995-2000
  • C2500 Suburban   1995-1999
  • C35   1995-2000
  • C3500   1995-2000
  • Express 1500   1997-2012
  • Express 2500   1997-2010
  • Express 2500 - Engine: V8, 4.8L, 294ci, FLEX   2011-2012
  • Express 2500 - Engine: V8, 4.8L, 294ci, GAS   2011-2012
  • Express 2500 - Engine: V8, 6.0L, 5967cc, 364ci, BI-FUEL   2011-2018
  • Express 2500 - Engine: V8, 6.0L, 5967cc, 364ci, CNG   2011-2018
  • Express 2500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/FLEX   2011-2018
  • Express 2500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/GAS   2011-2018
  • Express 2500 - Engine: V8, 6.0L, 5967cc, 364ci, FLEX   2011-2018
  • Express 2500 - Engine: V8, 6.0L, 5967cc, 364ci, GAS   2011-2018
  • Express 3500   1997-2010
  • Express 3500 - Engine: V8, 4.8L, 294ci, FLEX   2011-2012
  • Express 3500 - Engine: V8, 4.8L, 294ci, GAS   2011-2012
  • Express 3500 - Engine: V8, 6.0L, 5967cc, 364ci, BI-FUEL   2011-2018
  • Express 3500 - Engine: V8, 6.0L, 5967cc, 364ci, CNG   2011-2018
  • Express 3500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/FLEX   2011-2018
  • Express 3500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/GAS   2011-2018
  • Express 3500 - Engine: V8, 6.0L, 5967cc, 364ci, FLEX   2011-2018
  • Express 3500 - Engine: V8, 6.0L, 5967cc, 364ci, GAS   2011-2018
  • Express Cargo   2009-2012, 2015-2017
  • Express Cargo - Engine: V8, 6.0L, 5967cc, 364ci, BI-FUEL   2013-2014
  • Express Cargo - Engine: V8, 6.0L, 5967cc, 364ci, CNG   2013-2014
  • Express Cargo - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/FLEX   2013-2014
  • Express Cargo - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/GAS   2013-2014
  • Express Cargo - Engine: V8, 6.0L, 5967cc, 364ci, FLEX   2013-2014
  • Express Cargo - Engine: V8, 6.0L, 5967cc, 364ci, GAS   2013-2014
  • Express Pasajeros   2009-2012, 2016-2018
  • Express Pasajeros - Engine: V8, 6.0L, 5967cc, 364ci, BI-FUEL   2013-2015
  • Express Pasajeros - Engine: V8, 6.0L, 5967cc, 364ci, CNG   2013-2015
  • Express Pasajeros - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/FLEX   2013-2015
  • Express Pasajeros - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/GAS   2013-2015
  • Express Pasajeros - Engine: V8, 6.0L, 5967cc, 364ci, FLEX   2013-2015
  • Express Pasajeros - Engine: V8, 6.0L, 5967cc, 364ci, GAS   2013-2015
  • G30   2001-2002
  • K1500   1995-1999
  • K1500 Suburban   1995-1999
  • K2500   1995-2000
  • K2500 Suburban   1995-1999
  • K3500   1995-2000
  • Silverado   1995-1999
  • Silverado 1500   1999-2000
  • Silverado 2500   1999-2000
  • Suburban 1500   1995-2000
  • Suburban 2500   2000-2000
  • Tahoe   1995-2000
GMC+ Expand List– Hide List
  • C1500   1995-1999
  • C1500 Suburban   1995-1999
  • C2500   1995-2000
  • C2500 Suburban   1995-1999
  • C3500   1995-2000
  • K1500   1995-1999
  • K1500 Suburban   1995-1999
  • K2500   1995-2000
  • K2500 Suburban   1995-1999
  • K3500   1995-2000
  • Savana 1500   1997-2012
  • Savana 2500   1997-2012
  • Savana 2500 - Engine: V8, 6.0L, 5967cc, 364ci, BI-FUEL   2013-2018
  • Savana 2500 - Engine: V8, 6.0L, 5967cc, 364ci, CNG   2013-2018
  • Savana 2500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/FLEX   2013-2018
  • Savana 2500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/GAS   2013-2018
  • Savana 2500 - Engine: V8, 6.0L, 5967cc, 364ci, FLEX   2013-2018
  • Savana 2500 - Engine: V8, 6.0L, 5967cc, 364ci, GAS   2013-2018
  • Savana 3500   1997-2012
  • Savana 3500 - Engine: V8, 6.0L, 5967cc, 364ci, BI-FUEL   2013-2018
  • Savana 3500 - Engine: V8, 6.0L, 5967cc, 364ci, CNG   2013-2018
  • Savana 3500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/FLEX   2013-2018
  • Savana 3500 - Engine: V8, 6.0L, 5967cc, 364ci, ELECTRIC/GAS   2013-2018
  • Savana 3500 - Engine: V8, 6.0L, 5967cc, 364ci, FLEX   2013-2018
  • Savana 3500 - Engine: V8, 6.0L, 5967cc, 364ci, GAS   2013-2018
  • Sierra 1500   1999-2000
  • Sierra 2500   1999-2000
  • Yukon   1995-2000
  • Yukon XL 1500   2000-2000
  • Yukon XL 2500   2000-2000

Product Specifications

  • OPENING B INCHES0.625
  • OPENING D MM19.050
  • BYPASSYes
  • DESCRIPTIONVacuum Closes Bypass Heater Valve
  • OPENING C MM19.050
  • STYLEBypass
  • OPENING MM15.875
  • MATERIALPlastic
  • TYPEHeater Valves
  • HOSE CONNECTOR QUANTITY4 Connectors
  • O.E. REPLACEMENTYes
  • OPENING INCHES0.625
  • OPENING D INCHES0.750
  • OPENING B MM15.875
  • OPERATION TYPEModulated
  • OPENING C INCHES0.750
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Vacuum Closes Bypass Heater Valve - Four Seasons 74781

Item #: WBB2456243

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