MMX High Capacity Differential Sump | Diff Pan | F8x | M2 | M3 | M4

The MMX High Capacity Diff Sump / Diff Pan (MMR55-1000) is engineered for the BMW F8x M2, M2 Competition, M3 and M4. It increases oil capacity up to 2 litres, with an internal windage tray to maintain constant gear and pinion lubrication and reduce drivetrain drag. Internal and external cooling fins increase oil cooling under sustained load, and a -8AN port with M22 adaptor allows for external cooling setups. Precision machined from 6061-T6 billet aluminium, it's a direct replacement for the factory sump requiring no modification. What's in the box: Billet CNC-Machined Baffled Sump Billet CNC-Machined Windage Tray Magnetic Drain Plug + Seal Fill Plug + Seal M22 to -8AN adaptor for external oil cooler -8AN Plug Necessary hardware Factory Oil Pan Part No. 33 13 2 284 835

The MMX High Capacity Diff Sump (MMR55-1000) is a direct replacement for the factory diff pan on the BMW F8x M2, M2 Competition, M3 and M4. It increases oil capacity by up to 2 litres, giving the differential a larger reserve to draw on through sustained track use and hard road driving. An internal windage tray keeps gear and pinion lubrication constant regardless of load or cornering forces, while also reducing component drag. Less oil churn means less parasitic loss through the drivetrain, and more consistent lubrication where it's needed. Internal and external cooling fins increase the sump's surface area, improving oil cooling and helping the differential hold a consistent operating temperature under repeated hard use. A -8AN port, supplied with an M22 to -8AN adaptor, allows the sump to be run with an external cooling setup for anyone pushing the drivetrain further. The windage tray is built extra wide, giving perfect compatibility with Drexler and other F8x M2, M3 and M4 mechanical limited-slip differentials straight out of the box. The factory sump needs internal modification to accept a Drexler or mechanical LSD, this one doesn't. Precision machined from 6061-T6 billet aluminium, the sump fits the factory mounting points directly, with no modification required. It can be installed alongside the MMX Dual Differential Mount (MMR55-1001) and Front Differential Lift Mount / Cradle (MMR55-1604) for the ultimate F8x diff system.

Vehicle fitment

• Series: F-Series
• Chassis code: F87, F80, F82 & F83
• Engine code: N55 & S55
• Model variant: All M-Cars
• Model year: OG M2 (2016-2018), M2 Competition (2018-2021), M3 & M4 (2014-2020)

📦 Regal Autosport Shipping Policy

Shipping Destinations

We proudly ship our products across the UK, Europe, the USA, Australia, South East Asia, and other locations globally.There are no regions we restrict shipping to.

Carriers and Delivery Times

• United Kingdom: Royal Mail for small items; DPD Local for parcels up to 30kg.
  Delivery estimate: 1–2 business days.
  

• International:
  

• Small packages: Royal Mail (postal service)
  

• Small/medium/large parcels: DHL Express.
  Delivery estimate: 2–15 business days, depending on destination.
  

Please note: We do not ship on weekends or UK Bank Holidays. Orders placed after 2 PM will be processed the following business day.

Order Processing

Orders placed before 2 PM are typically processed and dispatched the same day.
Orders placed after 2 PM will be processed on the next business day.

Shipping Costs

Shipping costs are calculated automatically at checkout based on the volumetric weight of your order.
We do not offer free shipping — instead, we focus on keeping product prices as competitive as possible.

Tracking

All orders are shipped via tracked and signed-for services.
Tracking information will be provided and can be accessed via:

• Your Regal Autosport account page in Shopify
  

• The respective courier’s website
  

Customs, Duties, and Taxes

• UK Customers: Prices include UK VAT.
  

• International Customers:
  

• UK VAT will be deducted at checkout.
  

• Customers are responsible for all customs duties, import taxes, and fees applicable in their country.
  

• Delivery times may be delayed by customs clearance — time is not of the essence for deliveries.
  

Lost or Damaged Items

In the rare case of lost shipments:

• If the courier confirms the parcel as lost, we will re-ship your order as quickly as possible.
  

For damaged shipments:

• Customers must assist us in submitting a claim with the courier.
  

• After confirmation, we will replace the item or offer a discount, depending on the situation.
  

We take great care in packaging, but please inspect your order upon arrival and contact us immediately if the item is damaged or missing.

Backorders

Orders containing backordered items will be dispatched once all items are available.
We do not split ship orders. If you require partial delivery, please place separate orders for in-stock and backordered items.

Local Pickup and Delivery

We do not offer local pickup or local delivery for online orders due to security verification policies.
However, customers are welcome to visit our store and pay via chip and PIN.

📦 Regal Autosport Shipping FAQs

Where do you ship to?

We ship across the UK, Europe, the USA, Australia, South East Asia, and worldwide.
 There are no regions we restrict shipping to.

Which carriers do you use?

• UK orders: Royal Mail (small items), DPD Local (parcels up to 30kg)
  
  

• International orders: Royal Mail (small packages) or DHL Express (larger parcels)
  
  

How long will my order take to arrive?

• UK deliveries: Typically 1–2 business days after dispatch.
  

• International deliveries: Usually 2–15 business days, depending on location.
  

Please note: We do not ship on weekends or UK Bank Holidays.

When will my order be dispatched?

Orders placed before 2 PM are usually dispatched the same business day.
 Orders placed after 2 PM are processed on the next working day.

How much does shipping cost?

Shipping costs are calculated at checkout based on the volumetric weight of your items.
 We do not offer free shipping — instead, we keep our product prices as competitive as possible.

Will I receive tracking information?

Yes!
All shipments are tracked and signed for. You’ll receive tracking information by email and can also track your order via:

• Your Regal Autosport account page
  

• The courier’s own website
  

Do I have to pay customs charges or import taxes?

• UK Customers: Prices include UK VAT.
  

• International Customers:
  

• We deduct UK VAT at checkout.
  

• You are responsible for any local customs duties, import taxes, or fees.
  

Delivery times may be affected by customs clearance, and time is not of the essence for international deliveries.

What happens if my order is lost or damaged?

• If your shipment is lost, we will re-ship your order once the courier confirms the loss.
  

• If your order is damaged, we will work with you to file a courier claim and either replace the item or offer a discount based on the situation.
  

Please inspect your delivery upon arrival and contact us immediately if there are any issues.

What if my item is on backorder?

Orders containing backordered items will be held until all items are available.
We do not split ship orders. If you require partial delivery, please place separate orders for in-stock and backordered items.

Can I collect my order in person?

We do not offer local pickup or local delivery for online orders due to security verification.
However, you are welcome to visit our store and pay via chip and PIN if you wish to purchase in person.