Transmission Filter Kit Guide for the 2009-2013 BMW 328i (E90/E91/E92/E93)
Keep your BMW's automatic transmission shifting smoothly by understanding its most critical maintenance component.
- You must visually identify if your 328i has a ZF or GM transmission before buying parts.
- For ZF transmissions, buy a kit with an integrated pan and filter; for GM, the filter is separate.
- It is highly recommended to change the fluid and filter every 50,000-60,000 miles for preventative maintenance.
- Always replace the mechatronic sealing sleeve at the same time to prevent future leaks.
Is Your 328i's Transmission Acting Up?
A clogged transmission filter can cause serious problems. Because the filter's job is to trap debris, it can eventually become full and restrict fluid flow. This starves the transmission of the clean fluid it needs to operate correctly. You might notice the car hesitating, shifting roughly, or even making strange noises. Ignoring these signs can lead to expensive transmission damage.
🎬 Watch: A complete walkthrough of the BMW 3 Series transmission service.Vehicle Model Correction
This guide is for the 2009-2013 BMW 328i sold in the North American market. The 330i model was not available in this market during these years. The 328i is the correct model for this information.
Choosing the Right Aftermarket Transmission Filter Kit
The most important step is to identify which transmission your 328i has. During this period, BMW used two different 6-speed automatic transmissions in the 328i: one made by ZF (the GA6HP19Z) and one by General Motors (the GA6L45R). They are not interchangeable, and each requires a specific filter kit. You can find a sticker on the transmission body to identify it.
- For ZF Transmissions (GA6HP19Z): The best replacement is a kit that includes a new oil pan with an integrated filter. This is how the original part was designed. Kits from ZF, the Original Equipment Manufacturer (OEM), are a top choice. High-quality aftermarket brands like Rein and Meyle also offer complete kits that often include new bolts and a drain plug.
- For GM Transmissions (GA6L45R): The filter is a separate part from the pan. You can replace just the filter and the pan gasket. Brands like Beck/Arnley, ATP, and Wix offer kits for this transmission. It's still a good practice to use a quality brand to ensure the filter media and gasket material are up to standard. 🎬 See this DIY guide for servicing the GM GA6L45 transmission.
Pro Tip: While you're replacing the filter, it's a very good idea to also replace the mechatronic sealing sleeve. This small part is a known leak point and can only be accessed when the transmission pan is off.
Cost of Replacing a Transmission Filter Kit
| Item | Estimated Cost (USD) |
|---|---|
| OEM Filter Kit (ZF Pan/Filter or GM Filter) | $145 - $230 |
| Aftermarket Filter Kit (ZF or GM) | $85 - $180 |
| Shop Labor | $150 - $350 |
| Total Professional Replacement | $260 - $550+ |
Note: Costs are estimates and do not include the price of transmission fluid, which is also required for the job. Prices can vary by location and repair shop.
Frequently Asked Questions
How do I know if I have a ZF or GM transmission?
The most reliable way is to safely raise the vehicle and look for a sticker on the side of the transmission oil pan. The sticker will list the manufacturer (ZF or GM) and the model number. Do not rely on your VIN alone, as records can be inconsistent. Checking visually is the only way to be 100% sure before ordering parts.
🎬 Watch: How to change the transmission fluid and filter yourself.BMW says the transmission fluid is 'lifetime.' Do I really need to change it?
While BMW marketed the fluid as 'lifetime,' most mechanics and enthusiasts disagree. The fluid breaks down over time. To ensure a long life for your transmission, it's recommended to change the fluid and filter every 50,000 to 60,000 miles. This is preventative maintenance that can save you from a much more expensive transmission replacement down the road.
Should I do a transmission 'flush' or just a 'drain and fill'?
For these BMWs, a 'drain and fill' is the recommended procedure. This involves draining the old fluid, replacing the filter/pan, and refilling with new fluid. A high-pressure 'flush' can sometimes dislodge sediment that may cause new problems in an older transmission. A simple drain and fill is safer and effective.
What else should I replace during a transmission service?
Besides the filter kit and fluid, it is highly recommended to replace the mechatronic sealing sleeve. It's an inexpensive part that is a common source of leaks and is only accessible with the pan removed. Some comprehensive kits include this part.
Helpful Videos
Technical Specifications
OEM Part Numbers: 24152333907 24117593565 24152357284 24117572618
Vehicle may be equipped with either a ZF GA6HP19Z or a GM GA6L45R 6-speed automatic transmission. The correct part depends on a visual inspection of the transmission installed in the vehicle.
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- BMW 330i: