Performance Radiator for BMW 135i 335i (2008-2013) 3.0L Turbo

High-Capacity Performance Radiator for 2008-2013 BMW 3 Series Automatic Transmission

Direct-fit full aluminum radiator designed to eliminate heat soak and optimize engine cooling for automatic transmission N54 and N55 applications.

The Stock 3 Series Cooling Failure Point

The factory radiator equipped in the E90 and E82 chassis features plastic end tanks crimped to an aluminum core. Over time, constant thermal cycling from the turbocharged 3.0L engine causes the plastic to become brittle, leading to micro-fractures, coolant leaks, and inevitable catastrophic failure at the inlet and outlet necks. Furthermore, the OEM core capacity struggles to maintain optimal coolant temperatures under heavy load or extended boost periods, resulting in rapid heat soak that directly impacts ignition timing and overall engine output.

The Engineering Solution

This upgraded cooling unit resolves OEM vulnerabilities by utilizing a 100% full aluminum construction, completely eliminating the failure-prone plastic end tanks. The end tanks are seamlessly TIG-welded directly to the aluminum core for maximum structural integrity against high system pressures. Featuring an optimized single-row design with a massive 26.63" x 13.3" core (29.9" x 16.9" overall), it significantly increases fluid capacity and surface area for accelerated heat dissipation. The metallic finish enhances corrosion resistance, while the 1.5-inch inlet and outlet guarantee a precision fit with factory hoses. Engineered specifically for automatic transmission setups, this radiator stabilizes coolant temperatures, ensuring consistent power delivery during aggressive driving conditions.

Technical Specifications

Compatibility

• 2008-2013 BMW 135i (Automatic Only)
• 2013 BMW 135is (Automatic Only)
• 2007-2013 BMW 335i (Automatic Only)
• 2011-2013 BMW 335is (Automatic Only)
• 2007-2008 BMW 335xi (Automatic Only)

The BMW Precision Caliber

Built to exact dimensional tolerances, this aluminum radiator installs without chassis modification. It integrates flawlessly with factory mounting points and fan shrouds, eliminating overheating risks and maintaining optimal engine operation without triggering dashboard warning lights.