Entropy HPX Aluminum Radiator - 73-87 C10

Entropy radiators carry a lead time of approximately eight weeks from the order date.
Heavy duty aluminum radiator for 1973-1987 GM trucks complete with an aluminum shroud holding dual 11" HPX fans rated at 3400CFM. Together, they pull 35-40 amps.
Entropy radiators are made with pride in the USA using USA-made cores. New design uses billet mounts on the top and the bottom, allowing it to drop directly into either your factory 3-row or 4-row mounts without modification.

Add the optional dual cooling fan wiring harness for a simple installation. RH-02 includes relays, fuses, 187F temp switch and 10ga wire.

NOTE: Radiator cap not included. Add optional polished billet 16lb cap above.

  • All aluminum, TIG-welded construction; heavy duty 2-row core with 1.0" tubes.
  • Upper hose connection is 1-1/2", lower is 1-3/4".
  • Billet CNC machined filler neck. 
  • Brass overflow connections and drain petcock.
  • Heavy duty, stacked-plate transmission cooler.
  • Aluminum shroud with dual 11" HPX fans rated at 1700 CFM each.
  • Completely assembled and ready to drop into your truck.
  • Lifetime Warranty

Radiator is not polished and has a natural finish. For photos, the radiators have been removed from the packaging and cleaned with an aluminum cleaner and a fine scuff pad.

Requires 4-Row Factory Mounting Brackets

Radiator Height:
You MUST measure existing radiator. GM used two different sizes; 19" or 21" tall.

Also available in LS Engine Configuration
The 9161-LSX features the same USA-made core with two rows of 1.0" tubes for unadulterated cooling power for a high horsepower LSX with A/C. Designed for LS engines, it has both hose connections on the passenger side, a steam vent port and the temperature switch installed directly into the radiator. Be aware there are NO heater ports on the LSX version; connect heater hoses directly to the water pump.

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