MMX Performance G8X High-Capacity Baffled Differential Sump M2 M3 M4

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$1,884.00
$1,884.00
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The MMX G8X High-Capacity Baffled Differential Sump is engineered to keep your rear differential operating at peak performance under sustained track and aggressive road use. CNC-machined from 6061-T6 billet aluminium and designed as a direct OE-fit replacement for the OEM rear differential pan, this sump adds capacity, integrates active baffling and cooling, and gives you a port to plumb in an external cooler.

Capacity is increased by up to 2 litres (2.10 quarts) above OEM, providing a generous oil reserve that keeps the gears and pinion fully lubricated through extended high-G manoeuvres. The integrated internal baffled windage tray maintains constant lubrication regardless of vehicle attitude, while simultaneously reducing component drag. Internal and external cooling fins maximise heat dissipation surface area, helping the diff oil shed heat fast enough to keep operating temperatures consistent through repeated lap-after-lap use.

For owners running their G8X on a circuit, this sump helps prevent the "Rear Axle Differential Lock: Driving Stability Limited" warning that interrupts a session when OEM diff temperatures climb. An additional -8AN port (with an M22 to -8AN adaptor included) lets you plumb the sump directly into an external diff cooler, and the sump is designed to integrate cleanly with the MMX Dual Differential Mount (MMR55-1606).

Product Details

  • Precision CNC-machined from 6061-T6 billet aluminium
  • Direct OE-style fitment: no modifications required
  • Compatible with MMX Dual Differential Mount (MMR55-1606), no extra hardware needed
  • RWD and xDrive G8X drivetrains
  • SKU: MMR55-1600

What's Included

  • 1× billet CNC-machined baffled sump
  • 1× billet CNC-machined windage tray
  • Magnetic drain plug + seal
  • Fill plug + seal
  • M22 to -8AN adaptor for external oil cooler
  • Necessary mounting hardware

Notes

  • X3M / X4M fitment is not explicitly confirmed for this sump; please contact us before ordering for those chassis.
  • Professional installation recommended.
  • Includes a 1-year manufacturer warranty against defects in materials and workmanship
  • Designed and tested in the United Kingdom
MMX Performance G8X High-Capacity Baffled Differential Sump M2 M3 M4

$1,884.00

Does it come with a warranty?

Parts are covered by the manufacturer's warranty where one is offered. If something goes wrong, contact us and we'll help you with the claim.

What happens if I don't like it?

New, uninstalled parts in their original packaging can be returned within 30 days of delivery. Suspension components (coilovers, springs and dampers), wheel spacers and batteries can't be returned, and a restocking fee applies to approved returns. See our refund policy for details.

How fast is shipping?

In-stock orders usually ship within 1–3 business days. Many parts ship directly from the manufacturer or distributor. Orders over $200 ship free with standard shipping, and faster UPS and USPS options are available at checkout. See our shipping policy.

What's the returns policy?

You have 30 days after receiving your item to request a return. Parts must be new, uninstalled and in their original packaging. Contact us first to start a return. Full details are in our refund policy.

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