ALLOY WORKS 4-Row Aluminum Radiator For 1973-1986 Chevy/GMC C/K Series – 161, Bolt-On, Lifetime Warranty

If you’re restoring a classic Chevy or GMC truck from 1973 to 1986—think C10, C20, K10, K20, or Suburban—this ALLOYWORKS radiator is a game-changer.

It’s a brand new 4-row aluminum crossflow radiator, part number 161, and it’s built to keep that big block cool.

The dimensions are 28 1/4 inches long, 17 inches tall, and overall 33 inches wide by 18 5/8 inches high.

Inlet and outlet diameters are both 1 1/2 inches.

It comes with a cap and is 100% leak-tested and durability-tested.

Best part?

It’s a bolt-on fit—no drilling or modifications needed.

It also has a transmission oil cooler (φ32*215*G1/4) and a lifetime warranty, so you’re set for the long run.

Fits a ton of vehicles, including Buicks, Cadillacs, and Pontiacs from the same era.

UPC isn’t listed, but the part number is all you need.