Radiator for Chevrolet Blazer (1990-1994) 5.7L

All-Aluminum 3-Row Radiator for 1990-1994 Chevrolet Blazer (GMT400)

What it Does: The 3-row aluminum radiator replaces the failure-prone factory cooling assembly on the 1990-1994 Chevrolet Blazer to lower operating temperatures and prevent coolant loss under heavy towing or off-road conditions.

The Stock Chevrolet Blazer Thermal Vulnerability

Factory cooling systems on the GMT400 Blazer rely on crimped composite plastic end tanks paired with thin, single-row cores. Decades of heat cycling harden the plastic tanks, making them susceptible to stress cracks, separation at the core seam, and sudden coolant dumping. Furthermore, high thermal loads from the cast-iron small block quickly heat-soak factory core capacities when hauling or idling on trails.

The Engineering Solution

This unit provides a durable, all-aluminum drop-in replacement. Featuring a high-density 3-row brazed core measuring 33.98 x 17.24 x 1.34 inches, it significantly increases coolant volume and heat dissipation surface area over OEM units. Both tanks are 100% precision TIG-welded to the core, eliminating brittle plastic and failure-prone rubber gaskets entirely for sustained reliability under high-stress operating environments.

What's Included

• 1x 3-Row Full Aluminum Radiator
• 1x Radiator Cap

Technical Specifications

Compatibility

• 1990-1994 Chevrolet Blazer 5.7L V8

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT400 Blazer?

Yes, this is a direct fit for the 1990-1994 Chevrolet Blazer equipped with the L05 5.7L V8 engine and the factory 34-inch core support.

Do I need to bleed the cooling system after installation?

Yes, thoroughly burping air from the system after installation is required to prevent localized hotspots and ensure accurate thermostat cycling.

The Chevrolet Durability Standard

Full-size utility rigs demand thermal components that withstand heavy trailer tongue weights, severe chassis twist, and sustained low-speed crawling. This all-welded radiator delivers structural rigidity and reliable thermal management without risk of cracked tank seams.