BMW N55 Oil Pan Baffle (Weld-In) – E8X / E9X 135i, 335i, 135isProtect your engine from oil starvation under hard driving with this high-performance weld-in oil pan baffle designed for BMW N55 engines.This baffle is engineered to control oil movement inside the oil pan, keeping the pickup consistently supplied even during aggressive cornering, braking, and acceleration.How It WorksUnder high G-forces, engine oil can slosh away from the pickup, causing momentary drops in oil pressure which can lead to serious engine damage.This baffle system solves that problem by:• Directing oil toward the pickup area
• Limiting oil movement away from the pickup under load
• Using integrated Viton flapper doors that allow oil to flow into the pickup zone but restrict it from flowing back outThe result is a “trapped” oil reservoir around the pickup, helping maintain consistent oil pressure in demanding driving conditions.Key Features• Weld-in design for maximum strength and reliability
• Integrated Viton flaps for one-way oil control (high-temp, oil-resistant material)
• Significantly reduces oil starvation risk
• Ideal for track use, drifting, canyon driving, and high-performance builds
• Precision-designed for proper oil flow and drainageFitmentCompatible with BMW N55 engines in:• 2010–2013 E90 / E91 / E92 / E93 335i
• 2010–2013 E82 / E88 135i
• 2012–2013 E82 / E88 135isPlease verify compatibility with your specific vehicle before purchase.Installation NotesThis is a weld-in baffle and requires modification of the factory oil pan.
Professional installation and welding is strongly recommended.Oil pan removal is required. Ensure proper cleaning and prep before welding, and follow correct sealing procedures during reinstallation.
