Aluminum Radiator for Chevrolet Blazer (1967-1972) 4.1L 4.8L

Direct-Fit 3-Row Aluminum Radiator for 1967-1972 Chevrolet Blazer

What it Does: Replaces factory copper-brass or aged radiator assemblies with an all-aluminum 3-row core to maximize thermal transfer and prevent coolant boil-over during sustained low-speed crawling and heavy towing.

The Stock Blazer Thermal Degradation

Factory 1967-1972 C/K Blazer platforms relied on copper-brass radiators bonded with lead-tin solder. Over decades, galvanic corrosion, internal scale buildup, and solder fatigue severely deteriorate thermal dissipation. Restricted core tubes combined with low airflow velocity through early truck front fascias cause severe heat soak under sustained load, particularly behind high-torque inline-six workhorses subjected to trail crawling or cargo hauling.

The Engineering Solution

Constructed from lightweight, heavy-duty aluminum, this 3-row unit features precision TIG-welded end tanks that eliminate failure-prone mechanical crimps and degraded solder joints. The vacuum-brazed tube-and-fin matrix provides a significantly expanded surface area and larger coolant volume, lowering cylinder head operating temperatures and withstanding continuous cooling system pressure swings during off-camber operation.

Technical Specifications

Compatibility

• 1967 Chevrolet Blazer (4.1L 250ci / 4.8L 292ci Inline-6)
• 1968 Chevrolet Blazer (4.1L 250ci / 4.8L 292ci Inline-6)
• 1969 Chevrolet Blazer (4.1L 250ci / 4.8L 292ci Inline-6)
• 1970 Chevrolet Blazer (4.1L 250ci / 4.8L 292ci Inline-6)
• 1971 Chevrolet Blazer (4.1L 250ci / 4.8L 292ci Inline-6)
• 1972 Chevrolet Blazer (4.1L 250ci / 4.8L 292ci Inline-6)

The Chevrolet Durability Standard

Engineered to absorb chassis flex and high vibration without core rupture, this direct-replacement assembly delivers consistent heat rejection across high-load trail climbs, highway towing, and severe utility work.