Koyorad Performance Radiator: BMW M3 E90 / E92 / E93 4.0L MT / DCT 2008-2013

Koyo Performance Radiator – BMW M3 E90 / E92 / E93 S65 4.0L MT/DCT 2008–2013

Application: BMW M3 | E90 (Sedan) / E92 (Coupe) / E93 (Convertible) | S65B40 4.0L V8 | Manual & M-DCT

Part Number: HH422087 / KH422087

The E9X M3 is one of the most celebrated performance BMWs ever built — a naturally aspirated 4.0L V8 that revs to 8,400rpm, a chassis tuned for precision, and a driver experience that remains unmatched in the modern era. The S65 generates serious heat at high rpm and under sustained track use, making a high-quality cooling upgrade essential for anyone pushing the car hard.

Koyorad's all-aluminium radiator is a direct bolt-in performance upgrade for the E90/E92/E93 M3, engineered to the same factory fit and mounting points as the OE unit. Nocolok furnace brazed, precision TIG welded by hand, and triple pressure tested — it retains all OEM fan shroud mounts and stock hose connections with no modifications required.

Why Koyorad?

• Precise Tube & Fin Alignment — Strict quality control ensures optimal coolant flow and maximum heat transfer efficiency across the entire core.
• Nocolok Furnace Brazing — All tubes, fins, headers, and brackets are bonded in a state-of-the-art Nocolok furnace, creating a structure that resists vibration, road debris, and the elements.
• Billet Filler Neck — Precision-machined billet filler necks are fitted to every unit for superior strength, durability, and a reliable seal.
• OE-Specific Mounting — Application-specific mounting points for fan shrouds, inlet/outlet hoses, and top/bottom pins ensure a pain-free, no-modification install.
• Hand-Crafted Heliarc Welds — Each radiator is individually Heliarc welded by hand, creating the strongest possible aluminium-to-aluminium bond across all components.

Specifications

Cross Reference

Fitment

Sold individually. Lead times may apply — contact us at Coore for availability and shipping estimates. Due August 2026.

Coore Performance and Aftermarket is an Authorised Australian Distributor of Koyorad Performance Radiators.
Shop with confidence — all Koyorad products sold through Coore are genuine, backed by manufacturer support, and shipped from Australia.

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