Rein HWU0065 - Differential Drain Plug (Rear Inner)

Product Overview

The Rein HWU0065 is a genuine replacement differential drain plug engineered for the rear inner position on BMW and MINI vehicles. This OEM-specification component maintains proper differential fluid containment and accessibility during routine maintenance and fluid changes. The plug fits a broad range of BMW M-series models, 7 Series, X5 M, XM, i3 and i3s, as well as MINI Countryman and Paceman variants across multiple model years and powertrains.

This drain plug is sold individually. Verify your vehicle's differential configuration before ordering to ensure correct fitment.

Cross Reference Numbers

This Rein HWU0065 is equivalent to or replaces the following part numbers: 33117525064, SP00176.

Vehicle Compatibility

This part fits the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility for your vehicle.

• BMW M5 Sedan (F10): 2013–2016
• BMW M6 Coupe (F13): 2012–2019
• BMW M6 Convertible (F12): 2012–2019
• BMW M6 Gran Coupe (F06): 2013–2019
• BMW i3 60Ah BEV (I01): 2014–2018
• BMW i3 60Ah REx (I01): 2014–2016
• BMW i3s 94Ah BEV (I01): 2018–2021
• BMW X5 M (F85): 2015–2018
• BMW X5 M Competition (F85): 2016–2018
• BMW X5 M (F95): 2020–2023
• BMW X5 M Competition (F95): 2020–2026
• BMW 7 Series (G70): 2023–2026
• BMW XM (G09): 2023–2026
• MINI Countryman Base (R60): 2011–2016
• MINI Countryman S (R60): 2011–2016
• MINI Countryman S ALL4 (R60): 2011–2016
• MINI Countryman JCW ALL4 (R60): 2013–2016
• MINI Paceman Base (R61): 2013–2016
• MINI Paceman S (R61): 2013–2016
• MINI Paceman S ALL4 (R61): 2013–2016
• MINI Paceman JCW ALL4 (R61): 2013–2016

This may also fit other applications. Please use the vehicle selector tool to verify fitment.

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Frequently Asked Questions

What is a differential drain plug and why might I need to replace it?

A differential drain plug seals the drain opening on your vehicle's differential housing, allowing controlled fluid changes during maintenance. Over time, the plug can become corroded, stripped, or damaged by repeated removal and reinstallation. A worn or leaking drain plug may allow differential fluid to escape, leading to inadequate lubrication and potential differential damage. Replacement is straightforward and inexpensive insurance against fluid loss.

How do I know if my BMW or MINI differential drain plug needs replacement?

Signs of a failing drain plug include visible seepage or dripping fluid from the rear differential area, a loose or difficult-to-remove plug during service, stripped threads, or visible corrosion on the plug itself. If you notice fresh differential fluid stains under your vehicle near the rear axle after servicing, the drain plug may not be sealing properly and should be inspected or replaced.

Will this plug fit my specific BMW M5, M6, or MINI Countryman?

This Rein HWU0065 is designed for the rear inner differential position and covers a wide range of BMW and MINI models from 2011 onward, including M-series performance vehicles and MINI Countryman and Paceman variants. However, fitment can vary by model year and differential type. Use the vehicle selector tool to confirm compatibility with your specific vehicle before purchase.

What tools do I need to install a differential drain plug?

Installation requires basic hand tools including a wrench or socket to remove the old plug and install the new one. Some vehicles may require access from below, so a floor jack, jack stands, and possibly ramps are recommended for safe working height. Always allow the differential to cool before servicing and refer to your service manual for any special procedures or torque specifications.

Can I reuse the old drain plug or should I always replace it?

While some drain plugs can be reused if in good condition, it is best practice to replace the plug with a new one during fluid service. A fresh plug ensures a proper seal and eliminates the risk of thread damage or corrosion causing leaks. The modest cost of a replacement plug is far less than the potential expense of differential damage from fluid loss.

How often should I service my differential and replace the drain plug?

Differential fluid service intervals vary by vehicle and driving conditions. Consult your owner's manual or service documentation for the recommended interval, typically ranging from 20,000 to 50,000 miles depending on the model. The drain plug itself does not require replacement unless it shows signs of wear, damage, or leakage. Inspect it visually during each service and replace as needed.

Order the Rein HWU0065 differential drain plug today. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your BMW or MINI.

Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.