CSF 3937 Heavy-Duty Radiator for 19-25 Ram 3500 High-Output 6.7L Cummins Diesel

Vehicle Fitment

• 2019-2025 Ram 3500 (6.7-L Cummins Turbo Diesel Inline-6; High-Output engines only; 4WD/RWD)

Fitment Notes

• OE-style plastic tank with aluminum cross-flow core--direct fit using factory hoses, brackets, and fan support
• Factory-style radiator cap not included; compatible with OEM mounting hardware
• Not compatible with Standard-Output Cummins or gas engine variants

Features

• Heavy-duty 42-mm thick, 2-row aluminum core for up to 17% improved cooling over stock
• Plastic tanks engineered to factory specifications with durable EPDM seals
• Meets or exceeds OEM pressure, corrosion, and thermal performance requirements
• Cross-flow design retains factory fan and support structure--no modifications
• Leak-tested to factory standards and assembled in ISO-certified U.S. facilities
• Direct bolt-on replacement; no cutting or additional fittings required
• Weight approx.-25-lb--matches OEM installation parameters
• Covered by CSF's 1-Year Limited Warranty (via authorized resellers)

Specifications

• Part Type: Heavy-Duty OEM-Style Radiator
• Core Rows/Thickness: 2 rows, 42-mm
• Core Dimensions: approx. 39-3/8- - 20-5/16- - 1-5/8-
• Inlet/Outlet: 1-15/16- quick-connect ports (factory size)
• Fitment: 2019-2025 Ram 3500 (6.7-L High-Output Cummins Turbo Diesel)
• Material: Aluminum core with plastic tanks
• Weight: approx. 24-25-lb
• Warranty: 1-Year Limited

Included Components

• 1- CSF OEM-style radiator assembly
• 1- factory-style drain plug
• Installation instructions

Product Description

The CSF 3937 Heavy-Duty OEM-Style Radiator is engineered specifically for 2019-2025 Ram 3500 trucks powered by the High-Output 6.7-L Cummins Turbo Diesel. Designed as a direct drop-in replacement, it features plastic tanks and a 42-mm thick aluminum core engineered for up to 17% better cooling performance compared to factory radiators.

This radiator retains the factory cross-flow layout, hoses, fan shroud, and mounting hardware, ensuring a seamless installation without cutting or modifications. Each unit is pressure-tested to OEM standards, assembled in ISO-certified facilities, and built for towing and heavy-duty driving reliability.

Compatible only with High-Output diesel models and verified fitment through 2025, the CSF 3937 is backed by a 1-Year Limited Warranty and offers Ram 3500 owners dependable thermal control in severe-duty applications.