Aluminum Radiator for Mazda B2500 (1998-2001) 2.5L

Direct-Fit All-Aluminum Radiator for 1998-2001 Mazda B2500

What it Does: Replaces the failure-prone factory cooling assembly with a dual-row brazed aluminum core to maximize heat rejection and eliminate thermal fatigue leaks under heavy operational load.

The Stock B2500 End-Tank Vulnerability

The original equipment radiator relies on stamped core tubes mechanically crimped to molded plastic (PA66) end tanks sealed by rubber elastomer gaskets. Through repeated thermal cycling, the plastic embrittles, develops micro-fractures, and ultimately shears at the inlet and outlet neck fittings. Furthermore, unequal expansion rates between the aluminum core and composite tanks degrade the crimp seal over time, leading to chronic pressure loss, fluid seepage, and dangerous overheating conditions in the Lima 2.5L cylinder head.

The Engineering Solution

This heavy-duty unit is engineered with 100% TIG-welded structural aluminum end tanks bonded directly to a high-efficiency 2-row brazed tube-and-fin core. By eliminating crimped plastic interfaces and failure-prone gaskets, the radiator withstands extended pressure surges and severe heat soak. The dual-row configuration increases wetted surface area for superior thermal dissipation, stabilizing operating temperatures during heavy hauling and stop-and-go city driving. It features integrated transmission oil cooler (TOC) ports for seamless automatic transmission fluid cooling and direct drop-in factory alignment.

Technical Specifications

Compatibility

• 1998 Mazda B2500 2.5L L4 (Gasoline)
• 1999 Mazda B2500 2.5L L4 (Gasoline)
• 2000 Mazda B2500 2.5L L4 (Gasoline)
• 2001 Mazda B2500 2.5L L4 (Gasoline)

The Mazda Truck Durability Standard

Engineered to handle the continuous mechanical demands of utility work, bed payloads, and low-speed hauling, this all-aluminum cooling system maintains thermal stability without cracking under stress.