Radiator for BMW 318i 318is 318ti Z3 (1991-2000) 1.8L 1.9L Manual

Direct-Fit 3-Row Aluminum Radiator for 1991-2000 BMW 3 Series,Z3 (E36)

What it Does: The 3-Row Aluminum Radiator replaces the leak-prone factory cooling core on manual-transmission 1991-2000 BMW 3 Series and Z3 models to maximize heat rejection and eliminate catastrophic coolant loss.

The Stock BMW 3 Series,Z3 Cooling System Vulnerability

Factory E36 cooling systems rely heavily on composite plastic end tanks crimped onto an aluminum core. Over repeated thermal cycles and high coolant operating pressures, these factory tanks embrittle, crack at the inlet and outlet necks, and separate at the gasket seams. On high-revving M42 and M44 four-cylinder engines, even momentary coolant loss leads to rapid head gasket failure and warped cylinder heads. Furthermore, aged single-row stock cores are prone to internal calcification and restricted flow.

The Engineering Solution

Constructed from high-grade AA5052 aluminum, this heavy-duty crossflow radiator eliminates plastic components entirely through fully TIG-welded aluminum end tanks. The brazed 3-row core profile provides superior surface area and higher fluid volume over standard units, preventing heat soak under spirited driving or track conditions. Designed specifically for manual transmissions, it omits internal transmission oil cooler passages to match OEM plumbing accurately. It features an integrated brass petcock for service drain intervals and mounts directly to OEM chassis positions without drilling or bracket modifications.

What's Included

• 1 x 3-Row AA5052 Aluminum Crossflow Radiator with Integrated Brass Petcock

Technical Specifications

Compatibility

• 1991-1995 BMW 318i 1.8L L4 (Manual Transmission)
• 1996-1999 BMW 318i 1.9L L4 (Manual Transmission)
• 1991-1995 BMW 318is 1.8L L4 (Manual Transmission)
• 1996-1999 BMW 318is 1.9L L4 (Manual Transmission)
• 1995 BMW 318ti 1.8L L4 (Manual Transmission)
• 1996-1999 BMW 318ti 1.9L L4 (Manual Transmission)
• 1996-2000 BMW Z3 1.9L L4 (Manual Transmission)

Frequently Asked Questions & Fitment Warnings

Does this fit the E36 3 Series,Z3?

Yes, this is a direct fit for the 1991-2000 BMW 3 Series,Z3 equipped with the M42 and M44 engines. Note: This unit is engineered solely for manual transmission models and does not fit automatic variants or six-cylinder models.

Do I need to bleed the system after installation?

Yes, you must refill the core with BMW-approved coolant and completely bleed air from the cooling circuit prior to driving to prevent air locks and localized engine hot spots.

The BMW Precision Standard

Designed to satisfy stringent European performance criteria, this all-aluminum component guarantees bolt-on alignment, preserves OE operating pressures, and ensures flawless reliability without CEL triggers or clearance compromises.