Entropy LSX Aluminum Radiator (34" Width) - 88-98 GM Truck / SUV

Regardless if you're running a 5.3L truck engine or a 6.2L LSA supercharged crate engine, this radiator will fit, clear the accessory drive and do a killer job of keeping your engine cool.

Our LSX radiator is a double-pass configuration with both hose connections on the passenger side. This is a two-pronged benefit for your LSX swap project. First, it looks clean without the top radiator hose running all over your engine compartment.

And the second benefit is because it's a double-pass configuration,  it provides an additional 20% cooling capacity over a single pass radiator. Considering LSX radiators are much more efficient than a conventional small block engine, this gives you killer cooling up to 700 horsepower and beyond without having to a core with larger tubes.

This radiator has the correct size hose connections for a LSX motor and has the correct steam vent port for LSX swaps.

If you've been reading about your LSX swap and are thinking or tapping the water pump to run the steam vent back into it: DON'T DO IT! You will be shooting yourself in the foot. With a bazooka.

One of the best features of the LSX motor is the steam vent system, which is one of the features that allow LSX motors to run high compression or boost on pump gas. Disabling it is a disgrace of the sacred.

For the upper hose, the upper hose from a 1995 Mitsubishi Eclipse turbo AWD is almost a perfect fit.

For the lower hose, the lower hose from a 1999 Silverado 5.3L is close and will require trimming to work.


  • 2-rows of 1" cooling tubes
  • dual 11" HP fans for a total 3000 CFM
  • precision TIG welded construction
  • Lifetime warranty
  • billet CNC machined filler neck
  • heavy duty plate transmission cooler
  • stainless steel hardware

100% guaranteed to be bad ass and awesome. We guarantee you'll think our products are sexy and will cool your engine up to our stated horsepower cooling capacity.

For fan control, use our RH-02 Wiring Harness made specifically to duplicate the Corvette C5 two-speed fan functionality. 

There are two different radiators used in these trucks, that look very similar, yet are very different. This radiator is the narrower radiator with a 28-1/4" wide core and a 34" overall width.

Entropy radiators carry a typical lead time of six-eight weeks from the order date.

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