Direct Fit Aluminum Radiator for GM GMC SIERRA 2500 6.6L 2018 AT

This direct-fit aftermarket radiator is specifically engineered to replace OEM part number 79401. Designed for GM applications including GMC SIERRA 2500 6.6L 2018 AT. Featuring a robust core size of 849x708 and optimized aluminum thickness, it delivers superior heat dissipation, 100% leak-tested reliability, and extreme durability for your cooling system.

Item / OE No.79401
Core Size (mm)849x708
Tank Size (mm)83/83x738
Request Wholesale Pricing for 79401

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Factory Direct MOQ: 20 pcs
Compatibility Data
BrandApplication / ModelsOEM Numbers
GMGMC SIERRA 2500 6.6L 2018 AT79401

* Note: Please verify fitment using the OEM part number before ordering.

Engineering Excellence
  • Drop-in Fit: Designed to exact OEM specifications for easy installation.
  • High Thermal Efficiency: Optimized louvered fins increase heat dissipation.
  • 100% Tested: Every unit undergoes severe pressure and leak testing.

We provide robust packaging solutions designed for long-distance international shipping to ensure products arrive in perfect condition.

Individual BoxCorrugated box with foam
Pallet PackagingWrapped securely for ocean freight
Frequently Asked Questions
Will this fit my GM?

Yes, this unit is engineered as a direct replacement for OEM part 79401. It will drop-in perfectly without any modifications.

What is the core thickness?

The core dimensions are 849x708, ensuring optimal coolant flow and heavy-duty heat dissipation.

Do you offer wholesale pricing?

Absolutely. We offer factory-direct tiered pricing for repair shops and distributors starting at an MOQ of just 20 pieces.

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