4-Inch Cold Air Intake System

The MST Performance BW-B5802L cold air intake system is engineered to deliver cold air to your turbocharger, improving throttle response and providing a more aggressive induction sound. This kit includes a 4-inch intake pipe, a 4-inch DRY cone air filter, and a supplementary turbo inlet pipe, all finished with a durable black powder coating on the inlet pipe and heat shield for a sleek appearance. Designed for easy maintenance, the DRY cone air filter should be cleaned every 20,000 km and replaced at 60,000 km. The intake system is specifically designed to fit the BMW M340i 2020 B58 3.0L Turbo and the BMW M240i G42. Important compatibility notes: This intake is NOT compatible with 2025+ B58 Gen3 models due to redesigned turbo inlet piping. Toyota Supra and M240i models are unaffected by this note. Due to potential variations in model years and regional specifications, customers are strongly advised to contact MST Performance with a photo of their engine bay for verification before purchasing to ensure accuracy.