Koyo Performance Radiator – BMW 3 Series / M3 E36 & E30 MT
Application: BMW 3 Series / M3 | E36 (M50 / S50 / S52) & E30 (M20) | Manual Transmission
Part Number: KH422674
The E36 M3 and E30 3 Series are icons of the BMW performance lineage — lightweight, driver-focused machines that remain a staple of track days, hillclimbs, and motorsport builds decades after production ended. Whether you're running a stock S50, a built S52, or a classic M20, keeping coolant temperatures in check is critical to protecting your engine under sustained hard driving.
Koyorad's all-aluminium KH422674 is a direct bolt-in performance upgrade engineered specifically for manual transmission E36 and E30 applications. 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.
