Choosing the Right Transmission Filter Kit for Your 2007-2016 BMW 328i
Your BMW 328i has one of a few different automatic transmissions; here’s how to get the right parts for the job.
- First, confirm if your 328i has a GM 6-speed, ZF 6-speed, or ZF 8-speed transmission, as the parts are different.
- For reliability, choosing an OEM-equivalent brand like ZF is highly recommended for this component.
- While replacing the filter kit, it is a smart preventative measure to also replace the mechatronic sealing sleeve, a common leak point.
- This service should be done every 50,000-60,000 miles to prolong the life of your transmission.
First, Identify Your Transmission
The most critical step in buying a transmission filter kit for a 2007-2016 BMW 328i is knowing which transmission your specific car has. BMW used different transmissions across this period, and the parts are not interchangeable.
- 2007-2013 (E90 generation): These models could have a 6-speed automatic made by either GM (GA6L45R) or ZF (GA6HP19Z). A quick way to tell is by looking at the oil pan. The GM transmission has a stamped steel (metal) pan, 🎬 Watch this step-by-step guide for the GM 6-speed transmission service. while the ZF has a black plastic pan. 🎬 See how to replace the pan and filter on ZF 6-speed models.
- 2012-2016 (F30 generation): These models are equipped with a ZF 8-speed automatic transmission, either the GA8HP45Z or GA8HP70Z. The filter is integrated into the plastic oil pan.
Pro Tip: Before ordering, always verify your transmission type. If you're unsure, check the tag on the side of the transmission itself or consult a dealership with your VIN.
Symptoms of a Clogged or Failing Filter
When the transmission filter gets clogged, it restricts fluid flow, leading to noticeable problems. Ignoring these signs can lead to serious transmission damage.
- Harsh or Delayed Shifting: The car may hesitate or jerk when changing gears.
- Slipping Gears: The transmission might unexpectedly shift out of gear or struggle to stay in gear.
- Unusual Noises: You might hear whining, grinding, or clunking sounds during gear changes.
- Fluid Leaks: Red or brown fluid spots under your car can indicate a problem with the pan gasket or seals.
- Warning Lights: A transmission or check engine warning light may appear on your dashboard.
A Note on the Mechatronic Sealing Sleeve
A common issue, especially on ZF transmissions, is a leak from the mechatronic sealing sleeve. This small seal is where the vehicle's wiring harness connects to the transmission. When it fails, it causes fluid leaks that can lead to low fluid levels and shifting problems. Since you must remove the transmission pan to replace this sleeve, it is highly recommended to replace it at the same time as your filter kit.
Choosing an Aftermarket Brand
For a critical component like the transmission, brand quality matters. Here’s a breakdown of common aftermarket options.
Tier 1: OEM-Equivalent Quality
- ZF: As the Original Equipment Manufacturer for most of these transmissions, ZF kits are the gold standard. They provide a perfect fit and meet all of BMW's performance requirements. Many kits include the pan/filter, gasket, bolts, and plugs.
- Vaico: Often considered a high-quality aftermarket brand, Vaico offers service kits that are a reliable alternative to OEM.
Tier 2: Reputable Aftermarket
- Wix: Wix is a well-known filter manufacturer with a reputation for producing high-quality products that fit well. They are a solid choice for those looking for a balance of quality and price.
- Beck Arnley: This brand focuses on sourcing parts that match the form, fit, and function of original equipment, making them a dependable option.
- Dorman: Dorman offers a unique OE FIX for some models, which features a replaceable filter element separate from the pan, potentially reducing future service costs.
Tier 3: Budget-Conscious
- URO Parts: URO is known for providing affordable parts. While some users have success with their components, especially their upgraded aluminum pans, the brand has a mixed reputation for long-term reliability on other parts. For a transmission, it's often recommended to stick with a higher-tier brand unless you are using one of their specific, well-reviewed upgrade parts.
| Part Type | Typical Cost | Notes |
|---|---|---|
| New Aftermarket Kit | $57 - $987 | Price varies widely based on brand, transmission type (6-speed vs. 8-speed), and whether fluid is included. |
| New OEM Kit (ZF) | $110 - $250 | This is for the pan/filter kit only. Fluid is separate. |
| Shop Labor | $150 - $350 | Labor to drop the pan, replace the filter kit, and perform the fluid fill procedure. |
Frequently Asked Questions
How often should I replace my transmission filter?
Many experts recommend servicing the transmission and replacing the filter kit every 50,000 to 60,000 miles to ensure longevity, even though BMW once called the fluid "lifetime." This preventative maintenance can help you avoid costly repairs down the road.
Is this a DIY job?
For an experienced DIY mechanic, yes. However, it's a complex procedure. The car must be perfectly level, and the fluid must be filled to the correct level at a specific temperature. Failure to follow the procedure can cause serious damage. Many owners choose to have a professional perform this service.
Do I need to replace the bolts?
Yes. The bolts used on the transmission pan are typically single-use, torque-to-yield aluminum bolts. They must be replaced to ensure a proper seal and prevent leaks. Most quality kits include new bolts.
Should I buy a kit with an aluminum pan?
Some aftermarket brands like URO Parts offer upgraded aluminum pans. These can be more durable than the stock plastic pans and sometimes feature a replaceable filter element. For many owners, a quality plastic pan from a brand like ZF is sufficient, but an aluminum pan is a viable upgrade if you prefer its features.
Helpful Videos
Technical Specifications
OEM Part Numbers: 24152333907 24117571217 24118612901 24152357284
Kit typically includes an oil pan with an integrated filter, a pan gasket, a drain plug, and new mounting bolts. Transmission types include GM GA6L45R (6-speed), ZF GA6HP19Z (6-speed), and ZF GA8HP45Z/GA8HP70Z (8-speed).
We Have This Part in Stock
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 328i: