Description
The Mishimoto MMINT-DMAX-17KSLP is a purpose-built performance intercooler kit engineered specifically for the 2017-2019 6.6L Duramax L5P. Mishimoto’s engineering team targeted the L5P’s factory intercooler system as a known weak point and answered with a massive 68mm-thick bar-and-plate core, cast-aluminum end tanks, and 3.0in mandrel-bent aluminum piping that together transform this truck’s forced induction system. This isn’t a generic upgrade — every dimension, fitting, and bung on this kit was designed around the L5P’s factory layout.
As a dedicated forced induction system upgrade, this kit addresses the restriction and heat-soak limitations of the stock intercooler and piping. The core is 70-percent thicker than stock, and combined with larger inlets and outlets on the cast end tanks, overall restriction through the induction system drops by up to 64 percent compared to the factory unit. The 3.0in mandrel-bent piping eliminates the restrictive factory resonator, improving flow by as much as 55 percent over stock. For owners chasing more consistent charge-air temperatures and stronger flow through their induction engine setup, this performance induction kit gives the L5P’s forced induction hardware real headroom, whether the truck is still stock or heavily modified.
Vehicle Applications
This intercooler kit is a direct, specific fit for the 2017-2019 6.6L Duramax L5P and was designed around the GMT K2 chassis. It covers the Chevrolet Silverado 2500 HD and 3500 HD in High Country, LT, LTZ, and WT trims for 2017-2019, as well as the GMC Sierra 2500 HD and 3500 HD in Base, Denali, SLE, and SLT trims for 2017-2019. No other years, makes, or models are covered by this kit.
Features
- Direct fit for 2017-2019 Chevrolet/GMC 6.6L Duramax L5P
- Includes performance intercooler, hot-side and cold-side intercooler piping, and DuraCore boots
- 68mm-thick bar-and-plate core is 70-percent thicker than stock for maximum cooling
- Reduces restriction by up to 64 percent over the stock intercooler system
- 3.0in mandrel-bent aluminum pipes eliminate restrictive stock bends and the resonator, improving flow by up to 55 percent
- Larger intercooler inlet and outlet reduce restriction for improved flow
- Robust cast-aluminum end tanks resist cracking under high heat and pressure
- CNC-machined quick-disconnect fitting with new O-ring and spring clip for a factory-style, leak-free fit
- Bead-rolled pipe ends and mounting locations for factory sensors and harnesses
- Three additional bungs on the piping that can be drilled and tapped for sensors or water/meth injection
- Eliminates the failure-prone stock throttle valve connector
- Retains the temp sensor harness mount for secure wire routing
- Mishimoto silicone boots with DuraCore technology and Mishimoto constant-tension T-bolt clamps
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMINT-DMAX-17KSLP
- Product Type: Forced Induction
- Universal or Specific Fit: Specific
- Grade Type: Performance
- Intercooler Type: Air-to-Air
- Core Construction: Bar-and-Plate
- Core Material: Aluminum
- Core Color: Silver
- Core Height: 11in
- Core Thickness: 2.67in
- Core Length: 20in
- End Tank Construction: Cast
- End Tank Material: Aluminum
- Outlet Diameter: 3.25in
- Cold-Side Pipe Inside Diameter: 3.25in
- Pipe Material: Aluminum
- Pipe Color: Polished
- Pipe Finish: Powder Coated
- Coupler Material: Silicone
- Coupler Color: Black
- Hose Clamps Included: Yes
- Overall Length: 45.8in
- Overall Width: 4.92in
- Overall Height: 23.85in
- Weight: 80 lbs
- Chassis Codes: GMT K2
- Engine Codes: L5P
- Installation Note: Some trimming of the fan shroud may be required for installation
- Torque Spec: 27 in-lbs (3NM) recommended for T-bolt and constant-tension T-bolt clamps, with an operating range of 18-35 in-lbs (2-4NM); do not exceed 35 in-lbs (4NM)
- Patent No. US D1,077,860S
Frequently Asked Questions
What vehicles does the Mishimoto MMINT-DMAX-17KSLP intercooler kit fit?
This kit is a direct, specific fit for the 2017-2019 Chevrolet Silverado 2500 HD and 3500 HD (High Country, LT, LTZ, WT) and the 2017-2019 GMC Sierra 2500 HD and 3500 HD (Base, Denali, SLE, SLT) equipped with the 6.6L Duramax L5P.
How much thicker is the Mishimoto intercooler core than the factory unit?
The core is 68mm thick, making it 70-percent thicker than the stock intercooler, and it reduces restriction through the induction system by up to 64 percent compared to stock.
What is included with this intercooler kit?
The kit includes the Mishimoto intercooler, hot-side and cold-side intercooler piping, DuraCore silicone boots, constant-tension T-bolt clamps, a cold-side pipe adapter, intercooler core spacers, and mounting hardware, and it is backed by the Mishimoto Lifetime Warranty.
Does installing this kit require any vehicle modifications?
Some trimming of the fan shroud may be required for installation.
What size are the intercooler piping and outlet on this kit?
The kit uses 3.0in mandrel-bent aluminum piping, with an outlet diameter of 3.25in and a cold-side pipe inside diameter of 3.25in.
Is a warranty included with this Mishimoto intercooler kit?
Yes, this kit is covered by the Mishimoto Lifetime Warranty.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Not CARB approved. This item is not legal for sale or use on pollution-controlled motor vehicles in California or states that adopt California emissions standards. Intended for off-road / competition use where permitted by law.
