CSF 3944 Heavy-Duty Radiator for 19-24 Ram 2500/3500 6.7L Diesel (Std Output)

Vehicle Fitment

• 2019-2024 Ram 2500, Ram 3500 (6.7-L Cummins Turbo Diesel Inline-6; standard output models only; 4-WD or RWD)

Fitment Notes

• Heavy-duty OEM-style radiator with plastic tanks and upgraded aluminum core (42-mm thick, 2-row) for improved cooling performance
• Direct drop-in replacement using factory hoses and mounting; no additional fittings required
• Not compatible with High-Output Cummins or gas-engine variants

Features

• OEM plastic-tank and aluminum-core construction engineered to meet or exceed factory specs
• Thicker core (≈42-mm vs OEM 36-mm) provides ~17% better heat rejection
• Cross-flow aluminum core with leak-tested EPDM seals for durability
• Engineered for heavy-duty and towing duty applications under high thermal load
• Constructed in ISO-certified facilities to high quality standards
• Weight of approx.-21-lb - similar to factory units
• Corrosion-resistant materials for longevity under severe use
• Designed for factory fan, hoses, and support brackets - plug-and-play installation

Specifications

• Part Type: OEM-Style Replacement Radiator (standard output)
• Rows / Core Thickness: 2-row, ≈42-mm
• Core Dimensions: ~33-3/8- - 20-5/16- - 1-5/8- (L-W-Thick)
• Inlet/Outlet Size: 1-15/16- quick-connect ports
• Fitment: 2019-2024 Ram 2500/3500 (6.7-L Cummins Turbo Diesel, standard output only)
• Material: Aluminum core, plastic tanks
• Weight: approx.-21-lb
• Warranty: CSF standard limited (varies by reseller)

Included Components

• 1- CSF 3944 radiator assembly with plastic tanks and heavy-duty aluminum core
• 1- factory-spec drain plug
• Installation instructions

Product Description

The CSF 3944 Heavy-Duty Radiator is a direct-fit upgrade replacement for the factory coolant radiator in 2019-2024 Ram 2500 and 3500 trucks equipped with the **standard-output** 6.7-L Cummins Turbo Diesel I6. Delivering a thicker 42-mm aluminum core and cross-flow design, this unit offers up to 17% improved thermal performance over OEM units while retaining factory hoses, mounts, and fan compatibility.

Built to OEM specifications in ISO-certified facilities, it meets or exceeds factory standards for durability and cooling under towing or severe-duty loads. Leak-tested with EPDM seals, this radiator ensures corrosion-resistant, long-lasting performance without changing hoses or modifying the vehicle.

Each 3944 unit is designed for drop-in installation using factory mounting points and drains. Note: This part fits only standard output diesel engines and **does not** fit High-Output Cummins or gas-engined Ram trucks. Backed by CSF's limited warranty via certified resellers, it provides OEM-level fit and heavy-duty reliability for Cummins-powered Super Duty owners.