PWR 42mm Aluminium Alloy Radiator for BMW 3 Series M3 E90 E92 E93 (E9X) S65 V8 - Direct Fit Drop-In OEM Replacement Uprated Cooling Core Heat Exchanger - High Performance High Flow Heavy Duty Track Day Upgraded Rad

PWR 42 mm Alloy Rad for BMW M3 E9x S65 V8

Keep your S65 V8 cool and consistent with this Australian-built PWR 42 mm alloy cooling core. Designed as a bolt-in, drop-in replacement for the factory unit on the E90, E92 and E93 M3, it delivers a substantial step up in heat rejection for fast road, track day and motorsport use while retaining factory-style fitment and hose sizes.

PWR’s rolled dimple tube design and louvred fin geometry increase surface area and airflow efficiency for up to 30 percent better thermal performance than the stock cooler. The result is stable coolant temps, reduced heat soak and dependable reliability during hard driving, hot weather, heavy traffic and repeated sessions on circuit.

Why this cooling upgrade works

• Thicker 42 mm core with high-flow rolled dimple tubes for superior heat transfer
• Louvred fin layout with optimised pitch to maximise airflow and cooling capacity
• Direct replacement fit using factory mounts and OE-size outlets for quick install
• Polished aluminium sheet-metal tanks for strength, durability and clean aesthetics
• World-class TIG welding and controlled-atmosphere brazed core construction
• CAD designed to ISO9001 standards for consistent, repeatable quality
• Pressure tested and backed by a 12-month manufacturer warranty
• Made in Australia by PWR with race-proven technology

Proven on road and track

We run these on our own E9x M3 builds and customer cars. Owners report cooler, more stable temps on spirited drives, HPDE and track days, faster recovery between sessions and confidence in demanding conditions. Fit it once and drive harder with peace of mind.

Compatibility

• BMW M3 E90 - Saloon
• BMW M3 E92 - Coupe
• BMW M3 E93 - Convertible
• Engine: S65 V8 platform
• Type: Direct replacement cooler for the E9x V8 M3

Specifications

• Material: Aluminium
• Core thickness: 42 mm
• Core technology: Rolled dimple tube with louvred fin
• Tanks: Polished aluminium sheet metal
• Connections: OE-size outlets for standard hoses
• Fitment: Drop-in, factory-style mounting

What you receive

• 1 x PWR 42 mm alloy cooling core for S65-powered E9x M3

Fitting and support

This unit installs as a straightforward bolt-in replacement using OEM mounts and hoses. For professional installation, bleeding and coolant service, we recommend MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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