Performance Radiator for BMW E52 Z8 Alpina (2003) 4.8L

High-Capacity Performance Radiator for BMW Z8

What it Does: This all-aluminum performance radiator replaces the factory plastic-tank unit to significantly lower coolant temperatures and prevent catastrophic cooling failures on manual transmission-equipped BMW E52, E39, and E38 chassis.

The Stock E52 Z8 Heat Soak & Plastic Degradation

The original equipment (OE) BMW E52 cooling system suffers from a critical design flaw inherent to the era: crimped plastic end tanks. Over time, the continuous thermal cycling from the high-output 4.8L and 5.0L V8 engines causes the factory plastic to become brittle, eventually leading to micro-fractures, coolant leaks, or catastrophic tank blowouts. Furthermore, the standard-issue factory core lacks the fluid capacity and thermal mass required to efficiently manage heat soak during spirited driving or extended idling, resulting in elevated engine operating temperatures that compromise both performance and head gasket longevity.

The Engineering Solution

This performance radiator resolves the OEM vulnerabilities by utilizing a 100% TIG-welded, all-aluminum construction that completely eliminates failure-prone plastic components and epoxied seals. Built with a robust 40mm thick, dual-row core, this unit drastically increases coolant capacity and expands the active surface area for superior heat dissipation. The core is constructed using an advanced vacuum brazing furnace process, ensuring optimal fin-to-tube thermal transfer without the insulative properties of traditional epoxy. The heavy-duty aluminum end tanks are precision TIG-welded to handle significantly higher systemic pressures, providing a permanent solution to thermal instability and safeguarding your engine against overheating.

Technical Specifications

Compatibility

• ALPINA B10 (E39) 3.2 i | Engine: M60B30 (308S6K) | 191 KW / 256 HP | 9/1998 ->
• ALPINA B10 (E39) 3.3 i | Engine: M52B28 (286S7T) | 206 KW / 276 HP | 9/1998 ->
• ALPINA B12 (E38) 5.7 i V12 | Engine: M70B57 (5714KA) | 306 KW / 410 HP | 9/1998 ->
• ALPINA B12 (E38) 6.0 i V12 | Engine: M73B54 (5412AG) | 316 KW / 424 HP | 9/1998 ->
• ALPINA ROADSTER (Z8) 4.8 i | Engine: M73B48 (488S12) | 280 KW / 375 HP | 6/2000 ->
• BMW 5 E39 (95-) 535 i | Engine: M62B35 (358S1) / M62B35 (358S2) | 9/1998 ->
• BMW 5 E39 (95-) 540 i | Engine: M62B44 (448S1) / M62B44 (448S2) | 9/1998 ->
• BMW 5 E39 (95-) M5 | Engine: S62B50 (508S1) | 7/1997 ->
• BMW 7 E38 (94-) 735 i | Engine: M62B35 (358S2) | 9/1998 ->
• BMW 7 E38 (94-) 735 iL | Engine: M62B35 (358S2) | 9/1998 ->
• BMW 7 E38 (94-) 740 i | Engine: M62B44 (448S1) / M62B44 (448S2) | 9/1998 ->
• BMW 7 E38 (94-) 740 iL | Engine: M62B44 (448S1) / M62B44 (448S2) | 9/1998 ->
• BMW 7 E38 (94-) 750 i | Engine: M73B54 (54122) | 9/1998 ->
• BMW 7 E38 (94-) 750 iL | Engine: M73B54 (54122) | 9/1998 ->
• BMW Z8 E52 (00-) 4.9 | Engine: S62B50 (508S1) | 6/2000 ->
• BMW Z8 E52 (00-) ALPINA V8 | Engine: S62B50 (508S1) | 6/2000 ->

The BMW Precision Standard

Engineered for exacting European standards, this all-aluminum radiator provides a drop-in precision fit for the E52, E39, and E38 chassis. It guarantees factory-level sensor compatibility, triggering no check engine lights, while delivering the sustained thermal reliability required for high-performance naturally aspirated V8 and V12 engines.