High Performance Radiator for BMW E36 323i 325i 328i MT (1992-1999)

High-Capacity AA5052 Aluminum Radiator for 1992-1999 BMW 3 Series (E36 / M50, M52, S50, S52)

What it Does: Replaces the failure-prone OEM plastic-tank radiator to drastically lower engine operating temperatures and increase coolant capacity during high-RPM or track use.

The Stock E36 Cooling Weakness

OEM E36 cooling systems are notoriously fragile, primarily due to the factory plastic end tanks and brittle water necks that degrade under continuous thermal cycling. Over time, heat soak and localized boiling stress these plastic components, leading to catastrophic cracking and sudden coolant loss. The factory single-row core lacks the volumetric capacity necessary to dissipate heat during aggressive driving or prolonged idling, making the M50, M52, and S52 inline-six engines highly susceptible to head gasket failure and cylinder head warpage from severe overheating.

The Engineering Solution

This upgraded cooling module eliminates factory plastic failure points entirely by utilizing 100% TIG-welded aircraft-grade AA5052 aluminum construction. The unit features a high-density, 2-row tube-and-fin core measuring 40mm thick, which expands the heat dissipation surface area to deliver a 35% to 45% reduction in fluid operating temperatures. Coupled with 2mm thick reinforced aluminum end tanks, a CNC-machined billet filler neck, and an OEM-style brass petcock drain, the structural integrity is vastly superior to stock equivalents. The package also integrates a 16-inch, 10-blade slim electric fan pulling 1000 CFM, mounted via a custom aluminum shroud. This ensures optimal airflow dynamics and active heat extraction even in stationary traffic or low-speed autocross scenarios.

Technical Specifications

Compatibility

• 1988-1991 BMW E30 3-Series 325i / 325iX 2.5L
• 1992-1995 BMW E36 3-Series 320i 2.0L
• 1992-1995 BMW E36 3-Series 325i / 325is 2.5L
• 1995-1999 BMW E36 3-Series M3 3.0L / 3.2L
• 1996-1998 BMW E36 3-Series 328i / 328is 2.8L (Does not fit 1999 E46 3 Series)
• 1997-1999 BMW E36 3-Series 323i 2.5L
• 1998-1999 BMW E36 3-Series 323is 2.5L
• 1999-2000 BMW E36 3-Series 323ti 2.5L
• Note: Fits manual transmission models only. Please verify fitment year and model.

The BMW Precision Standard

Upgrading the E36's notorious cooling system guarantees sustained thermal stability on track, protecting your inline-six from head warpage while maintaining precise engine temperatures under heavy load.