A Guide to the 2007-2015 BMW 335i Automatic Transmission Filter Kit
Keep your 335i's automatic transmission shifting correctly by choosing the right service kit for your specific model year.
- You must identify if your 335i has the 6-speed (2007-2013 E9x) or 8-speed (2012-2015 F30) automatic transmission to buy the correct kit.
- The original plastic transmission pan is a common failure point that leads to leaks; replacing the entire pan/filter assembly is required for service.
- Always use new, one-time-use aluminum bolts and the correct transmission fluid (ZF Lifeguard 6 or 8) to prevent leaks and damage.
- Consider replacing the mechatronic sealing sleeve at the same time, as it is another frequent source of leaks on 6-speed models.
Understanding Your 335i's Transmission Service Needs
Properly servicing the automatic transmission in your 2007-2015 BMW 335i is critical for a long and healthy service life. While BMW once called the transmission fluid a "lifetime" fluid, ZF, the transmission manufacturer, recommends a fluid and filter service every 50,000 to 60,000 miles to prevent issues. A clogged filter can lead to poor shifting, slipping gears, and eventually, transmission failure.
Important: Two Transmissions Mean Two Different Kits
Before buying a kit, you must know which automatic transmission your 335i has. The parts are not interchangeable.
- 2007-2013 BMW 335i (E90, E91, E92, E93 chassis): These models are equipped with a ZF 6HP 6-speed automatic transmission.
- 2012-2015 BMW 335i (F30 chassis): These models use the newer ZF 8HP 8-speed automatic transmission.
Always verify your vehicle's model year and chassis to ensure you purchase the correct kit.
A Common and Critical Failure Point: The Plastic Pan
The original factory transmission pans on both 6-speed and 8-speed models are made of plastic. Over many heat cycles, this plastic can become brittle, warp, or crack, leading to transmission fluid leaks. A fluid leak is a serious issue that can cause slipping, jerky shifting, and catastrophic transmission damage if the fluid level drops too low. Because the filter is integrated into this pan, replacing the entire assembly is the standard and required procedure for a filter change.
Choosing the Right Aftermarket Transmission Filter Kit
When shopping for a replacement kit, you have several options that balance cost and quality.
Brand Quality Tiers
- OEM (ZF): ZF is the original equipment manufacturer for BMW's automatic transmissions. Choosing a ZF-branded kit ensures you get the exact same quality, fit, and performance as the original part. This is the safest and most recommended option.
- Premium Aftermarket (Vaico, Beck Arnley): Brands like Vaico are known to be OEM suppliers for some car manufacturers and generally offer high-quality replacement parts that fit well. They are a solid alternative to the OEM ZF kit.
- Mid-Grade Aftermarket (Wix, Dorman, ATP): These brands are well-known in the aftermarket. Dorman sometimes offers an "OE FIX" by providing an upgraded aluminum pan that is more durable than the original plastic one and allows for a separate, replaceable filter. Wix is a reputable filter manufacturer. Reviews for these brands are generally positive but always check for vehicle-specific fitment.
- Value Aftermarket (URO Parts): URO Parts offers a more budget-friendly option. While their quality has improved over the years, some users in forums have reported mixed experiences with fit and finish on certain BMW parts. They can be a viable option if cost is the primary concern.
Pro Tip: Don't Forget the Fluid and Sleeves
When replacing your transmission pan and filter, it is also the perfect time to replace the mechatronic sealing sleeve. This is another very common source of leaks on the 6HP transmission and is inexpensive to replace once the pan is off. 🎬 See how to fix gear slipping by replacing mechatronic seals. Also, ensure you use the correct fluid: ZF Lifeguard 6 for the 6-speed transmission and ZF Lifeguard 8 for the 8-speed. Using the wrong fluid can cause severe damage.
| Part Type | Estimated Cost |
|---|---|
| New OEM (ZF Kit) | $220 - $350 |
| New Aftermarket | $67.60 - $986.45 |
| Shop Labor | $200 - $600 |
Frequently Asked Questions (FAQ)
How do I know if my transmission filter is clogged?
Symptoms include jerky or hard shifts, a delay when shifting from park to drive, transmission slipping, or a whining noise from the transmission area. A transmission warning light may also appear on your dashboard.
Should I upgrade to a metal transmission pan?
Upgrading to an aluminum pan can be a good long-term solution. They are more durable than the stock plastic pans, are not prone to warping or cracking, and can help dissipate heat more effectively. Some metal pans also feature a replaceable filter, making future services cheaper.
Are the transmission pan bolts reusable?
No. The bolts are typically aluminum, one-time-use, torque-to-yield bolts. They must be replaced every time the pan is removed to ensure a proper seal and prevent leaks. Always follow the correct tightening sequence and torque specifications.
🎬 Watch this complete ZF 6HP service and proper filling procedure.Were there any recalls for the 2007-2015 335i transmission?
Searches of the NHTSA database did not show any widespread recalls specifically for the transmission pan or filter on the 2007-2015 BMW 335i. However, a service bulletin (TSB 24 08 06) was issued for the ZF 6HP transmission regarding a leaking mechatronic sealing sleeve, a common repair done during a filter service.
Helpful Videos
Technical Specifications
OEM Part Numbers: 24117571217 24152333907 24118612901
Kit includes a transmission oil pan with an integrated non-serviceable filter, a pan gasket or seal, and a set of single-use aluminum mounting bolts.
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 335i: