17-19 GM 6.6L L5P DURAMAX

Shop top-rated L5P Duramax upgrades for 2017–2019 trucks, including EFI Live alternatives, high-performance intercoolers, and upgraded downpipes. Perfect for increasing towing power and throttle response, this collection supports factory emissions systems and offers L5P tuning options compatible with 6-speed and 10-speed GM transmissions. Also includes direct-fit transmission coolers and lift pumps.

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  Magnaflow Stainless Steel Muffler 14x4x9 2.5/2.5 C/C 11216

  Magnaflow Stainless Steel Muffler 14x4x9 2.5/2.5 C/C 11216Ships to Continental US Only.   MagnaFlow Muffler Mag SS 14X4X9 2.5/2.5 C/C

  MSRP:

  Was:

  Now: $175.86

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  Magnaflow Stainless Steel Muffler 22x5x11 3 C/C 12579

  Magnaflow Stainless Steel Muffler 22x5x11 3 C/C 12579Ships to Continental US Only.   MagnaFlow Muffler Mag SS 22X5X11 3 C/C

  MSRP:

  Was:

  Now: $321.48

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  Magnaflow Stainless Steel Muffler 14x5x8 3x3 C/C 12219

  Magnaflow Stainless Steel Muffler 14x5x8 3x3 C/C 12219Ships to Continental US Only.   MagnaFlow Muffler Mag SS 14X5X8 3X3 C/C

  MSRP:

  Was:

  Now: $197.98

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  Magnaflow Stainless Steel Muffler 4x4x14 3 14419

  Magnaflow Stainless Steel Muffler 4x4x14 3 14419Ships to Continental US Only.   MagnaFlow Muffler Mag SS 4X4X14 3

  MSRP:

  Was:

  Now: $184.04

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  Magnaflow Stainless Steel Muffler 4x9 14 2.5/2.5 13216

  Magnaflow Stainless Steel Muffler 4x9 14 2.5/2.5 13216Ships to Continental US Only.   MagnaFlow Muffler Trb SS 4X9 14 2.5/2.5

  MSRP:

  Was:

  Now: $203.28

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  Magnaflow Universal Converter 2.5in Inlet/outlet Center/center Round 53956

  Magnaflow Universal Converter 2.5in Inlet/outlet Center/center Round 53956Ships to Continental US Only.   MagnaFlow Conv Univ 2.5in Inlet/Outlet Center/Center Round

  MSRP:

  Was:

  Now: $108.00

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  Magnaflow Universal Converter 2.5 53006

  Magnaflow Universal Converter 2.5 53006Ships to Continental US Only.   MagnaFlow Conv Univ 2.5

  MSRP:

  Was:

  Now: $114.00

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  Magnaflow Universal Converter 2.25 Fed 53005

  Magnaflow Universal Converter 2.25 Fed 53005Ships to Continental US Only.   MagnaFlow Conv Univ 2.25 FED

  MSRP:

  Was:

  Now: $114.00

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  Magnaflow Universal Converter Tip 1-pk Dw 3.50 X 4.50 2.25 Id 35125

  Magnaflow Universal Converter Tip 1-pk Dw 3.50 X 4.50 2.25 Id 35125Ships to Continental US Only.   MagnaFlow Tip 1-Pk DW 3.50 X 4.50 2.25 Id

  MSRP:

  Was:

  Now: $109.66

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  Magnaflow Stainless Steel Muffler 14x4x9-3 C/C 11219

  Magnaflow Stainless Steel Muffler 14x4x9-3 C/C 11219Please Call For Availability. Ships to Continental US Only.   MagnaFlow Muffler Mag SS 14X4X9-3 C/C

  MSRP:

  Was:

  Now: $197.98

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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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