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Regular Price: $1,268.83

Sale Price $1,141.95

  • Direct fit for 2017-2019 Chevrolet/GMC 6.6L Duramax L5P*
  • Reduces restriction by over 64% over stock intercooler
  • 68mm-thick bar-and-plate core is 70% thicker than stock for maximum cooling
  • Larger inlet and outlet reduce restriction for improved flow
  • Additional features below
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Features

PRODUCT FEATURES

  • Direct fit for 2017-2019 Chevrolet/GMC 6.6L Duramax L5P*
  • Reduces restriction by over 64% over stock intercooler
  • 68mm-thick bar-and-plate core is 70% thicker than stock for maximum cooling
  • Larger inlet and outlet reduce restriction for improved flow
  • Robust cast-aluminum end tanks resist cracking under high heat and pressure
  • Includes cold-side adapter pipe with DuraCore™ boot and constant-tension T-bolt clamps
  • Adapter pipe includes 2 bungs that can be drilled and tapped for sensors or water/meth injection
  • Available in durable silver or black powder-coated finish
  • Patent Pending
  • Mishimoto Lifetime Warranty

DESCRIPTION

Mishimoto has expanded our line of Duramax performance parts to include a performance intercooler for the 2017-2019 Chevrolet/GMC 6.6L Duramax L5P.

High intake temperatures can reduce performance and potentially cause engine damage if left unchecked. Protect your investment by upgrading to the Mishimoto 6.6L Duramax L5P performance intercooler. This Duramax intercooler is precision engineered with durable cast-aluminum end tanks that resist cracking under high temperatures and boost pressures.

The massive 68mm-thick bar-and-plate core is 70% thicker than stock and is designed for maximum cooling. In addition, the larger core reduces restriction by over 64% compared to the stock intercooler. We've also increased the size of the intercooler inlet and outlet by 6mm and 12mm, respectively, to improve flow even more.

Included with this intercooler is an adapter cold-side pipe with DuraCore™ boot and constant-tension T-bolt clamps. Two additional bungs on the adapter pipe can be drilled and tapped for sensors or water/meth injection. Offered in Sleek Silver or Stealth Black powder-coated finish, the Mishimoto 6.6L Duramax intercooler, like all our Duramax performance parts, is protected by our signature Mishimoto Lifetime Warranty.

PURCHASE INCLUDES

(1) Mishimoto Intercooler
(1) Cold-Side Intercooler Pipe Adapter
(1) Cold-Side Intercooler Boot
(3) Constant Tension T-Bolt Clamp
(2) Intercooler Core Spacer
(2) M8 X 1.25 X 20mm Bolt
(2) M8 X 1.25 X 35mm Bolt
(2) M8 X 1.25 X 60mm Bolt
(6) M8 Washer
Mishimoto Lifetime Warranty

NOTES

*Some trimming of the fan shroud may be required for installation.

TECH SPECS

VEHICLE SPECS

MakeGM
Engine Codes L5P
Chassis Codes GMT K2
Fits GMC Sierra 2500HD V8 (6.6L Diesel) 2017-2019
GMC Sierra 3500HD V8 (6.6L Diesel) 2017-2019
Chevrolet Silverado 2500HD V8 (6.6L Diesel) 2017-2019
Chevrolet Silverado 3500HD V8 (6.6L Diesel) 2017-2019

PRODUCT SPECS

Installation Torque Specs 27 in-lbs (3N*M) recommended for all t-bolt and constant tension t-bolt clamps. These clamps have an operating range of 18-35 in-lbs (2-4N*M). Do not exceed the maximum torque rating of 35 in-lbs (4N*M).
Core Thickness 2.67"
Weight76lbs
Coating Powder Coated
Tank Wall Thickness 5mm
Outlet 3.25"
Core Length 36.15"
Core Height 23.55"
Core Width 2.67"
Inlet 3"
Core Size 36.15" X 23.55"
Overall Width4.92"
Overall Height23.85
Overall Length45.8"
Construction Bar-and-Plate
ENGINEERING

Performance Review – Performance Intercooler Kit R&D, Part 2 – Production Sample

December 04, 2021

After piloting any performance machine, the same question always arises, "How can I squeeze more performance out of this engine?" Whether it's a low-slung sports car, hot-hatch, or diesel powerhouse, the sentiment remains. The L5P 6.6L Duramax powering the 2017-2019 HD Silverados and Sierras are no exception. They're not destined for corner carving, but they … Continue reading Performance Review – Performance Intercooler Kit R&D, Part 2 – Production Sample →

Read More 

Performance Review – Performance Intercooler Kit R&D, Part 2 – Production Sample

Performance Review – Performance Intercooler R&D, Part 1 – Stock Review and Prototyping

December 04, 2021

Performance is in the eye of the beholder. When the term 'performance vehicle' is uttered, thoughts primarily drift to low-slung, no-frills sports cars. Creature comforts were all sacrificed to the gods of speed, and practicality wasn't even considered. However, every vehicle performs in its own regard, including the 6.6L L5P Duramax powered Silverado and Sierras. … Continue reading Performance Review – Performance Intercooler R&D, Part 1 – Stock Review and Prototyping →

Read More 

Performance Review – Performance Intercooler R&D, Part 1 – Stock Review and Prototyping
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WARRANTY

Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.

Mishimoto Lifetime Warranty on ALL Products
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