6.6 LLY 2004.5-2005

The LLY is a 6,599 cc (402.7 cu in) turbocharged engine which debuted in mid-2004 and continued until the end of 2005.

 

It is a 32-valve design with high-pressure common-rail direct injection and aluminum cylinder heads. It was installed with the Garrett turbocharger with a variable geometry vane system and they installed an Exhaust Gas Recirculation valve or (EGR Valve). Learning from problems with injectors in the previous LB7 GM changed the valve covers to allow access to the injectors without having to remove the valve covers, saving significant labor costs if injector replacement became necessary.

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Bostech EGR Cooler

Bostech EGR Cooler Part # EGR654

OEM: 97303654

  • Fitment: Chevrolet/GMC 6.6L 2004-2007
  • Part #: EGR654
  • Manufacturer: Bostech
  • Bostech EGR Cooler Part # EGR654

    OEM: 97303654

$287.00

Bostech EGR Cooler Gasket Kit

Bostech EGR Cooler Gasket Kit Part # EGR654GKT

  • Fitment: Chevrolet/GMC 6.6L 2004-2007
  • Part #: EGR654GKT
  • Manufacturer: Bostech
  • Bostech EGR Cooler Gasket Kit Part # EGR654GKT

$19.95

Bostech Crank Position Sensor

Bostech Crank Position Sensor Part # ISK957

  • Fitment: Chevrolet/GMC 6.6L Duramax Diesel LB7,LLY 2004-2005
  • Part #: ISK957
  • Manufacturer: Bostech
  • Bostech Crank Position Sensor Part # ISK957

$109.95

Mass Air Flow Sensor

Bostech Mass Air Flow Meter Part # ISK951

OEM: 88892543

  • Fitment: Chevrolet/GMC 6.6L 2001-2007
  • Part #: ISK951
  • Manufacturer: Bostech
  • Bostech Mass Air Flow Meter Part # ISK951

    OEM: 88892543

$89.95

Chevrolet/GMC Duramax 6.6L 2004.5-2010 LLY, LBZ, LMM Variable Vane Position Sensor

Bostech Turbo Variable Vane Position Sensor Part# ISK710 OEM#12210790,12643471,12635324
  • Part #: ISK710
  • Manufacturer: Bostech
  • Bostech Turbo Variable Vane Position Sensor Part# ISK710 OEM#12210790,12643471,12635324
$495.00

Bostech Diesel Fuel Injector

Bostech Diesel Fuel Injector Part # DE665

OEM: 977890144, 97303657

  • Fitment: Chevrolet/GMC 6.6L Duramax Diesel LLY 2004.5-2005
  • Part #: DE665
  • Manufacturer: Bostech
  • Bostech Diesel Fuel Injector Part # DE665

    OEM: 977890144, 97303657

$295.95

Bostech Diesel Fuel Injector Seal Kit

Bostech Diesel Fuel Injector Seal Kit Part # ISK119

  • Fitment: Chevrolet/GMC 6.6L 2006-2010
  • Part #: ISK119
  • Manufacturer: Bostech
  • Bostech Diesel Fuel Injector Seal Kit Part # ISK119

$4.95

Bostech Engine Valve Cover Gasket

Bostech Engine Valve Cover Gasket Part # GK01341

OEM: 97312341

  • Fitment: Chevrolet,GMC 6.6L 2004-2010
  • Part #: GK01341
  • Manufacturer: Bostech
  • Bostech Engine Valve Cover Gasket Part # GK01341

    OEM: 97312341

$29.95

Bostech Injector Bore Cleaning Tool

Bostech Tool Part # TL2

  • Part #: TL2
  • Manufacturer: Bostech
  • Bostech Tool Part # TL2

$29.95

Bostech Fuel Injection Harness Repair Kit

Bostech Fuel Injection Harness Repair Kit Part # ISK855

  • Fitment: Chevrolet/GMC 6.6L 2005-2010
  • Part #: ISK855
  • Manufacturer: Bostech
  • Bostech Fuel Injection Harness Repair Kit Part # ISK855

$59.95
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