Hold a long sweeper on track in an N55 car and the oil in the factory sump slides away from the pickup. A second of starvation is all it takes to hurt bearings. The MMX Performance N55 Oil Sump Baffle Kit keeps oil where the pump can reach it, so you can lean on the car without watching the pressure gauge.
Most N55 baffle solutions mean pulling the sump and welding in a plate. This one bolts in. You can fit it at home with hand tools.
How the N55 Oil Sump Baffle Works
The baffle sits inside the factory sump and combines dedicated internal baffling with seven one-way oil control flaps. Oil flows toward the pickup, then the flaps close behind it, so oil thrown sideways under cornering and braking is trapped near the pickup instead of draining away. The result is steadier oil pressure during hard driving.
What's Included
- 1 x MMX N55 oil sump baffle (MMR20-0501)
- All installation hardware
Key Features
- Bolt-in design, no welding or sump modification
- Seven one-way oil control flaps plus internal baffling
- Reduces oil surge and helps maintain consistent oil pressure
- Anodized T-6061 aluminum construction
- Designed and tested in the United Kingdom
- 1-year MMX warranty against defects in materials and workmanship
- Part number: MMR20-0501
Vehicle Fitment
Fits BMW F-chassis models with the N55 3.0L turbocharged inline-six and factory sump:
- BMW F22 M235i Coupe (2014-2016)
- BMW F23 M235i Convertible (2015-2016)
- BMW F30 335i Sedan (2012-2015)
- BMW F32 / F33 / F36 435i (2014-2016)
- BMW F87 M2 (2016-2018)
Installation Notes
Installation requires draining the engine oil and removing the sump. A competent home mechanic can do it. Fit a new sump gasket or sealant per BMW procedure.
- Drain the engine oil and remove the oil sump.
- Clean the sump and bolt the MMX baffle into place with the supplied hardware.
- Refit the sump with new sealing and torque to BMW specification.
- Refill with oil and check for leaks.
