Mishimoto 11+ Chevy 6.6L Duramax Radiator

SKU: MISMMRAD-DMAX-11

Radiators

MM Radiators - Alum...

Mishimoto

Mishimoto 11+ Chevy 6.6L Duramax Radiator

SKU: MISMMRAD-DMAX-11

Radiators

MM Radiators - Alum...

LOW STOCK! Est Ship 3-5 days. In stock at 1 location (2 available)

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Description

Exclusive Mishimoto flash sale discount at StreetFX!

Talk about timing! This is a limited offer while stocks last on various Mishimoto part numbers. There's never been a better time to buy your Mishimoto upgrades, so what are you waiting for?!

This item is currently on sale!

Same-day payment required to secure promotional price. Promotions may end early or be extended based on stock levels or other factors.

Mishimoto 11+ Chevy 6.6L Duramax Radiator

Mishimoto has released a direct-fit performance aluminum radiator for the 2011+ Chevrolet/GMC 6.6L Duramax LML. Mishimoto performance radiators are manufactured from high-quality aircraft-grade aluminum with a 100% brazed aluminum core and polished end tanks. The Mishimoto Duramax radiator offers a 22% increase in coolant capacity, increased cooling efficiency, and the all-aluminum TIG-welded construction provides a rugged design that can take the abuse of any environment or terrain. Pair your Mishimoto 6.6L Duramax aluminum radiator with other Mishimoto Duramax performance parts such as our Silicone Coolant Hose Kit for the ultimate in cooling performance and reliability. The Mishimoto 6.6L Duramax aluminum radiator retains factory fitment and requires no modification to your truck. Whether you use your Duramax for tearing up the drag strip or working at the job site, you can trust the Mishimoto performance radiator to keep your truck cool. As with all our products, this Duramax radiator is protected by the Mishimoto lifetime warranty.

Additional Information

Aluminum radiator engineered for efficient heat dissipation and optimal engine cooling. Precision-fit design ensures easy installation, corrosion resistance, and reliable performance across varied driving conditions.

Application Summary

2015 Chevrolet Silverado 2500 HD High Country 6.6 Liter 1000, 2015 Chevrolet Silverado 2500 HD High Country 6.6 Liter 6L90, 2011-2015 Chevrolet Silverado 2500 HD LT 6.6 Liter 1000, 2011-2015 Chevrolet Silverado 2500 HD LT 6.6 Liter 6L90, 2011-2015 Chevrolet Silverado 2500 HD LTZ 6.6 Liter 1000, 2011-2015 Chevrolet Silverado 2500 HD LTZ 6.6 Liter 6L90, 2011-2015 Chevrolet Silverado 2500 HD WT 6.6 Liter 1000, 2011-2015 Chevrolet Silverado 2500 HD WT 6.6 Liter 6L90, 2015 Chevrolet Silverado 3500 HD High Country 6.6 Liter 1000, 2015 Chevrolet Silverado 3500 HD High Country 6.6 Liter 6L90, 2011-2015 Chevrolet Silverado 3500 HD LT 6.6 Liter 1000, 2011-2015 Chevrolet Silverado 3500 HD LT 6.6 Liter 6L90, 2011-2015 Chevrolet Silverado 3500 HD LTZ 6.6 Liter 1000, 2011-2015 Chevrolet Silverado 3500 HD LTZ 6.6 Liter 6L90, 2011-2015 Chevrolet Silverado 3500 HD WT 6.6 Liter 1000, 2011-2015 Chevrolet Silverado 3500 HD WT 6.6 Liter 6L90, 2015 GMC Sierra 2500 HD Base 6.6 Liter 1000, 2015 GMC Sierra 2500 HD Base 6.6 Liter 6L90, 2011-2015 GMC Sierra 2500 HD Denali 6.6 Liter 1000, 2011-2015 GMC Sierra 2500 HD Denali 6.6 Liter 6L90, 2011-2015 GMC Sierra 2500 HD SLE 6.6 Liter 1000, 2011-2015 GMC Sierra 2500 HD SLE 6.6 Liter 6L90, 2011-2015 GMC Sierra 2500 HD SLT 6.6 Liter 1000, 2011-2015 GMC Sierra 2500 HD SLT 6.6 Liter 6L90, 2011-2014 GMC Sierra 2500 HD WT 6.6 Liter 1000, 2011-2014 GMC Sierra 2500 HD WT 6.6 Liter 6L90, 2015 GMC Sierra 3500 HD Base 6.6 Liter 1000, 2015 GMC Sierra 3500 HD Base 6.6 Liter 6L90, 2011-2015 GMC Sierra 3500 HD Denali 6.6 Liter 1000, 2011-2015 GMC Sierra 3500 HD Denali 6.6 Liter 6L90, 2011-2015 GMC Sierra 3500 HD SLE 6.6 Liter 1000, 2011-2015 GMC Sierra 3500 HD SLE 6.6 Liter 6L90, 2011-2015 GMC Sierra 3500 HD SLT 6.6 Liter 1000, 2011-2015 GMC Sierra 3500 HD SLT 6.6 Liter 6L90, 2011-2014 GMC Sierra 3500 HD WT 6.6 Liter 1000, 2011-2014 GMC Sierra 3500 HD WT 6.6 Liter 6L90

Part Type

Radiator

Product Overview

Data: v4.2 - Upd: 2026-11-09 19:35:19

Features

22-percent increase in coolant capacity
All-aluminum design with durable, TIG-welded construction
Features a CNC-machined, quick-disconnect outlet for factory or Mishimoto silicone hose kit connection

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Alternate Part Number:	MRAD-DMAX-11
Color:	Silver
Description:	Chevrolet/GMC 6.6L Duramax Aluminum Radiator
Finish:	Brushed
Install Difficulty:	5
Installation Difficulty:	5/5
Material:	Aluminum
Part Number:	misMMRAD-DMAX-11
Feature 1:	Direct fit for 2011-2016 Chevrolet/GMC 6.6L Duramax trucks
Feature 2:	22-percent increase in coolant capacity
Feature 3:	All-aluminum design with durable, TIG-welded construction
Feature 4:	Features a CNC-machined, quick-disconnect outlet for factory or Mishimoto silicone hose kit connection
Feature 5:	Efficient fluid temperature reduction and superior heat dissipation
Feature 6:	Ideal for use in hauling, towing, warm climates
Feature 7:	Includes Mishimoto M12 x 1.5 Magnetic Drain Plug to capture metallic debris and fragments in cooling system
Feature 8:	Mishimoto Lifetime Warranty
TechSpec Applications:	2011-2016 Chevrolet Silverado 2500 HD w/ 6.6L Duramax LML--2011-2016 Chevrolet Silverado 3500 HD w/ 6.6L Duramax LML--2011-2016 GMC Sierra 2500 HD w/ 6.6L Duramax LML--2011-2016 GMC Sierra 3500 HD w/ 6.6L Duramax LML
TechSpec Core Height (in):	27.76
TechSpec Core Length (in):	33.46
TechSpec Core Thickness (in):	1.97
TechSpec Drain Plug Thread Size:	M12 x 1.5
TechSpec Fluid Capacity (gal):	8.06
TechSpec Includes:	Mishimoto Radiator--Magnetic Drain Plug w/ Dowty Oil Seal--Mishimoto Lifetime Warranty
TechSpec Inlet (in):	1.81
TechSpec Material:	Aluminum
TechSpec Overall Height (in):	44
TechSpec Overall Length (in):	28.9
TechSpec Overall Width (ins):	5.6
TechSpec Rows:	2

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:53:18

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s	Mishimoto
StreetFX SKU	misMMRAD-DMAX-11
SFX Item ID	4050217
Accounting SKU	mis-MMRAD-DMAX-11
Manufacturer SKU	MMRAD-DMAX-11
Manufacturer UPC	748354010879
Alternative References	MIMMMRAD-DMAX-11, MIO-MRAD-DMAX-11, MMRAD-DMAX-11

Radiator, Performance, Crossflow, 2 Rows, Aluminum, Natural, Chevy, GMC, 6.6L Diesel, Each

Mishimoto performance radiators are designed and engineered to maximize cooling efficiency, boost engine functions, and, most of all, protect your engine from overheating. Many stock radiators can't handle the additional heat that comes higher horsepower levels. So, swap out your stock radiator for an all-aluminum Mishimoto.

Key features and benefits of Mishimoto performance radiators include:
• Available for universal and exact fit applications (no cutting or modifications required)
• All-aluminum construction for optimal heat dissipation, improved strength, and reliability
• Increased cooling capacity due to their massive core size
• 100 percent brazed aluminum core for minimal distortion, low stress, and clean joints
• Available in various sizes with 2-row or 3-row cores
• TIG-welded for clean, strong welds and increased durability
• Magnetic drain plugs capture metallic debris or fragments
• Included high-pressure 1.3 bar cap raises the coolant boiling point for greater safety and efficiency
• Automatic transmission and accessory coolers included where applicable

Product Attributes
Brand	Mishimoto
Manufacturer's Part Number	MMRAD-DMAX-11
Part Type	Radiators
Product Line	Mishimoto Performance Radiators
UPC	748354010879
Radiator Material	Aluminum
Radiator Style	Crossflow
Transmission Cooler	Yes
Inlet Location	Upper driver side
Outlet Location	Lower passenger side
Overall Width (in.)	44.00 in.
Overall Height (in.)	28.90 in.
Overall Thickness (in.)	5.60 in.
Row Quantity	2
Radiator Finish	Natural
Core Width (in.)	33.46 in.
Core Height (in.)	27.76 in.
Core Thickness (in.)	1.97 in.
Radiator Inlet Size	1.810 in.
Trans Cooler Adapter Fittings Included	No
Fan Included	No
Radiator Cap Included	No
Quantity	Sold individually.
Notes	Lower outlet is factory-style quick-disconnect.