MISHIMOTO BMW E9X 3-Series N54 N55 Performance Radiator, 2006-2013

The E90 BMW platform excels as both a comfortable weekday cruiser and a capable weekend track car. Elevated engine temperatures are common during aggressive driving, making an effective cooling upgrade essential for maintaining reliability. Mishimoto offers a direct solution with the BMW 335i/335xi/135i Performance Aluminum Radiator, engineered to control rising temperatures and support consistent straight‑six performance.

This radiator features all‑aluminum construction with TIG‑welded end tanks, a 100‑percent brazed aluminum core, and CNC‑machined quick‑disconnect inlet and outlet fittings. The high‑quality aircraft‑grade aluminum and brushed finish provide an ideal balance of durability, efficiency, and refined appearance. Precision‑engineered for flawless drop‑in fitment, the Mishimoto radiator delivers a 35‑percent increase in coolant capacity for improved heat rejection under demanding conditions.

Each unit includes a Mishimoto Magnetic Drain Plug with a dowty seal to help capture circulating metal fragments and enhance long‑term engine protection. As with all Mishimoto components, this radiator is backed by the Mishimoto Lifetime Warranty. With upgraded construction, increased cooling capacity, and the elimination of failure‑prone plastic connections, this radiator is the ideal replacement for the stock unit.