The Last Diesel Radiator You’ll Ever Need

Fluidyne Extruded Aluminum Diesel Radiators

Sick of cracked, leaking aftermarket radiators? So are we. For decades, diesel truck owners have settled for radiators that simply can’t take the heat. At Fluidyne, we’re putting an end to that — permanently.

Over 30 Years of Proven Performance

For more than three decades, Fluidyne has been a leader in high-performance cooling systems. Our products have powered championship-winning NASCAR teams, extreme off-road builds, and high-horsepower street machines. When it comes to cooling under pressure, nobody does it better.

Now, we’re bringing that same elite-level technology to the diesel world. Our extruded aluminum diesel radiators are engineered from the ground up to outperform and outlast every traditional radiator on the market.

Built with NASCAR-Proven Technology

Our extruded tube core is a single-piece design — not a patchwork of thin, brazed tubes like most aftermarket aluminum radiators. This solid-core construction eliminates the header joint, the #1 failure point in conventional designs. It’s the same technology we use in our official NASCAR oil coolers — and now it’s available for your Powerstroke, Cummins, or Duramax truck.

Why Fluidyne Radiators Are Different

• Extruded Aluminum Core
  Formed from a single piece of aluminum for unmatched rigidity, heat transfer, and durability.
• Race-Proven Durability
  Trusted in NASCAR and now available for diesel trucks that demand race-grade performance.
• Maximum Heat Rejection
  The densest core and most aluminum contact surface area in the industry.
• Proprietary Fin Design
  Engineered for better airflow, faster heat dissipation, and lower temps under heavy load.
• Thickest Tanks in the Game
  Built to handle real diesel stress — from daily towing to sled pulls and high-boost performance.

Compatible with Leading Diesel Platforms:

• Ford Powerstroke Radiators (6.0L, 6.4L, 6.7L)
• Dodge Ram Cummins Radiators (5.9L, 6.7L)
• Chevy/GMC Duramax Radiators (LB7, LLY, LBZ, LMM, LML)

Length (inches)

45.16

Height (inches)

20.55

Depth (inches)

4.78

Radiator Style

Crossflow

Core Length (inches)

34

Core Height (inches)

20

Core Depth (inches)

2

Radiator Inlet Size (inches)

1.89

Radiator Outlet Size (inches)

1.89

Inlet Location: Upper drivers side  Outlet Location: Lower passenger side

Finish

Natural

Material

Aluminum

Rows

5

Make

Chevy/GMC Model 2500HD, 3500HD Year Range 2001-2005 Engine 6.6L Duramax

Trans Cooler

Yes

Trans Cooler Adapter Fittings Included

No

Trans Cooler Line Connection

NONE

Fan Included

No

Radiator Cap Included

No

Upgrade the Whole System

Pair your Fluidyne radiator with our direct-fit bar-and-plate transmission coolers for complete cooling coverage — ideal for towing, racing, or daily workhorse duty.

Shipped Strong. Delivered Safe.

Each unit ships in a custom heavy-duty box with high-density foam to prevent damage in transit. Yes, our shipping is slightly more — but unlike other brands, we guarantee your radiator arrives ready to install.

Why Choose Fluidyne?

• 30+ Years of Racing Pedigree
• Official NASCAR-licensed Oil Cooler Supplier
• Made with the Most Advanced Materials in the Industry
• Backed by Generations of Performance Engineering