MMX High-Capacity Baffled Differential Sump / Oil Pan for BMW G8x M2/M3/M4

Our G8x High-Capacity Baffled Sump / Oil Pan keeps your M-Car’s differential lubricated, cool, and drag-free, adding 2 liters of oil, clever windage trays, and fins that keep temperatures in check. Machined from billet aluminium and ready for our Dual Differential Mount or solo.

Maximum Oil Capacity, Cooling and Efficiency.

Our sump increases oil capacity by up to 2 litres (2.10 quarts), providing a generous reserve to keep your differential optimally lubricated at all times. The integrated internal windage tray ensures constant lubrication of the gears and pinion while simultaneously reducing component drag. This careful design minimises drivetrain losses, allowing your car to maintain power delivery efficiency and prolong component life even under sustained high-stress driving.

Maintaining Peak Performance.

Temperature management is critical for maintaining peak performance, which is why our sump features both internal and external cooling fins. These fins maximise the surface area for heat dissipation, helping to maintain consistent oil temperatures and prevent overheating. Whether on track or during spirited driving on the road, our sump ensures your differential operates at maximum efficiency, supporting reliable, high-performance operation.

Precision machined from 6061-T6 billet aluminium, our sump offers a perfect balance of strength and lightweight construction. Every surface, edge, and component has been engineered to the highest standard, delivering a robust upgrade that protects your differential, improves efficiency, and enhances the reliability of your M-Car’s drivetrain over time.

OE Fitment, With Aftermarket Performance

It features an additional -8AN port and includes an M22 to -8AN fitting adaptor, allowing the addition for external cooling setups.

Our baffled sump has been engineered to fit exactly like OE to existing factory mounts, providing a seamless upgrade without modification.

Features:

• Increases oil capacity by up to 2 liters (2.10 quarts) for optimal differential lubrication at all times.
• Integrated internal windage tray ensures constant gear and pinion lubrication while reducing component drag.
• Minimizes drivetrain losses, maintaining power delivery efficiency and prolonging component life under high-stress driving.
• Internal and external cooling fins maximize surface area for heat dissipation, helping to maintain consistent oil temperatures and prevent overheating.
• Precision machined from 6061-T6 billet aluminum for a perfect balance of strength and lightweight construction.
• High-quality engineering protects the differential, improves efficiency, and enhances drivetrain reliability.
• Features an additional -8AN port with M22 to -8AN fitting adaptor, enabling the addition for external cooling setups.
• Designed to fit exactly like OE to existing factory mounts for a seamless, drop-in upgrade.
• Compatible with our Dual Differential Mount (MMR55-1606) with no extra hardware required.
• Flexible configuration options: run the sump alone, the dual mount alone, or both together for the ultimate setup.

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.