04.5-05 GM 6.6L LLY DURAMAX

Optimize airflow and fuel delivery for your 2004.5–2005 LLY Duramax with upgraded intercooler piping, turbo kits, and performance injectors. This section focuses on improving turbo spool and reducing EGTs while maintaining compatibility with stock turbochargers and factory engine management. Includes LLY-specific head studs and fuel system parts for daily driving or towing builds.

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  Magnaflow Stainless Steel Muffler 11x4x9 2.5 O/O 11376

  Magnaflow Stainless Steel Muffler 11x4x9 2.5 O/O 11376Please Call For Availability. Ships to Continental US Only.   MagnaFlow Muffler Mag SS 11X4X9 2.5 O/O

  MSRP:

  Was:

  Now: $175.86

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  Magnaflow Stainless Steel Muffler 18x5x8 3 O/C 12259

  Magnaflow Stainless Steel Muffler 18x5x8 3 O/C 12259Please Call For Availability. Ships to Continental US Only.   MagnaFlow Muffler Mag SS 18X5X8 3 O/C

  MSRP:

  Was:

  Now: $219.88

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  Magnaflow Stainless Steel Muffler 14x6x6 2.5/2.5 C/C 12616

  Magnaflow Stainless Steel Muffler 14x6x6 2.5/2.5 C/C 12616Please Call For Availability. Ships to Continental US Only.   MagnaFlow Muffler Mag SS 14X6X6 2.5/2.5 C/C

  MSRP:

  Was:

  Now: $175.86

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  Magnaflow Stainless Steel Muffler 11x4x9 2.5 O/C 11366

  Magnaflow Stainless Steel Muffler 11x4x9 2.5 O/C 11366Please Call For Availability. Ships to Continental US Only.   MagnaFlow Muffler Mag SS 11X4X9 2.5 O/C

  MSRP:

  Was:

  Now: $175.86

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  Magnaflow Stainless Steel Muffler 4x4 14 2.5/2.5 14416

  Magnaflow Stainless Steel Muffler 4x4 14 2.5/2.5 14416Please Call For Availability. Ships to Continental US Only.   MagnaFlow Muffler Mag SS 4X4 14 2.5/2.5

  MSRP:

  Was:

  Now: $171.30

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  Magnaflow Stainless Steel Muffler 14x4x4 2x2 C/C 10414

  Magnaflow Stainless Steel Muffler 14x4x4 2x2 C/C 10414Please Call For Availability. Ships to Continental US Only.   MagnaFlow Muffler Mag SS 14X4X4 2X2 C/C

  MSRP:

  Was:

  Now: $148.92

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  Magnaflow Stainless Tip 4.5in Dia 2.5in Inlet 5.75in Length 35224

  Magnaflow Stainless Tip 4.5in Dia 2.5in Inlet 5.75in Length 35224Please Call For Availability. Ships to Continental US Only.   MagnaFlow Tip Stainless Double Wall Round Single Outlet Polished 4.5in DIA 2.5in Inlet 5.75in Length

  MSRP:

  Was:

  Now: $141.33

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  Magnaflow 4" Y-pipe Transition Universal - 4" X 4" 10799

  Magnaflow 4" Y-pipe Transition Universal - 4" X 4" 10799Please Call For Availability. Ships to Continental US Only.   MagnaFlow Smooth Trans Y 4 x 13inch C/D SS

  MSRP:

  Was:

  Now: $134.28

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  Magnaflow 3"-5" Tip Adapter Universal - 3" X 5" X 7" 10766

  Magnaflow 3"-5" Tip Adapter Universal - 3" X 5" X 7" 10766Please Call For Availability. Ships to Continental US Only.   Magnaflow Tip Adapter 3x5x7

  MSRP:

  Was:

  Now: $73.19

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  AMP Bedxtender For 1984-2017 All Black 74605-01A

  AMP Bedxtender For 1984-2017 All Black 74605-01A AMP Research 1984-2017 All All Bedxtender - Black

  MSRP:

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  Now: $39.99

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  AMP Bedxtender For 1984-2017 All Black 74604-01A

  AMP Bedxtender For 1984-2017 All Black 74604-01A Please Call For Availability.   AMP Research 1984-2017 All All Bedxtender - Black

  MSRP:

  Was:

  Now: $19.99

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  Longhorn Fab Stainless Steel Braided Boost Gauge Line Universal - 5' Long - 1/8" Npt 200919

  Longhorn Fab Stainless Steel Braided Boost Gauge Line Universal - 5' Long - 1/8" Npt 200919 The Longhorn Fab 200919 Stainless Steel Braided Boost Gauge Line gets rid of the cheap, flimsy, and unsightly nylon line in your engine bay. Do you...

  MSRP:

  Was:

  Now: $125.24

  Out of stock. Please Call For Availability