BMW M3 Trunk Lid Lift Support Guide for E90, E92 & F80 Models (2008-2018)
If your M3's trunk lid is heavy to lift or won't stay open, this guide explains how to choose the right replacement struts.
- Verify your M3's body style (E90 Sedan, E92 Coupe, or F80 Sedan) to order the correct part number.
- Always replace trunk lift supports in pairs to ensure safety and longevity.
- Choosing an OEM-supplier brand like Stabilus or a quality aftermarket brand like Lesjofors is a reliable, cost-effective choice over expensive dealer parts.
- Replacement is a very simple DIY task that can be done in under 15 minutes with a flathead screwdriver.
Is Your M3 Trunk Strut Failing?
A failing trunk lift support is more than just an inconvenience; it can be a safety hazard. The most common sign is a trunk lid that won't stay open by itself. You might have to hold it up, or it may unexpectedly slam shut. Other symptoms include a trunk that feels very heavy to open or one that doesn't 'pop' up when you unlatch it with your key fob.
Generation and Body Style are Critical
The 2008-2018 M3 was built on two different platforms and came in different body styles. The trunk struts are NOT interchangeable between them. Ordering the wrong part is the most common mistake.
- E90 M3 Sedan (2008-2011): Uses part number 51247250308.
- E92 M3 Coupe (2008-2013): Uses part number 51247129194.
- F80 M3 Sedan (2015-2018): Uses part number 51247259763.
Note: This guide does not cover the E93 M3 Convertible, which has a different, more complex trunk mechanism.
Choosing the Right Aftermarket Lift Support
When shopping for new trunk struts, you'll find Original Equipment (OEM) and aftermarket options. For this part, the quality difference often comes down to the brand.
- Tier 1 (OEM Supplier): The original struts on your M3 were made by a company called Stabilus. You can buy Stabilus-branded struts from aftermarket retailers. These offer the exact same performance and quality as the Genuine BMW part without the high dealer price tag.
- Tier 2 (Quality Aftermarket): Brands like Lesjofors, a Swedish company, are known for making quality suspension and spring components. They are a reliable alternative to OEM and are considered a strong choice.
- Tier 3 (Budget Brands): Cheaper, often unbranded parts are available, but they can be a gamble. Some user reviews for budget brands like URO Parts mention poor fitment and very short lifespans, making them a frustrating choice.
Pro Tip: Always Replace in Pairs
Even if only one strut seems to have failed, you should always replace them as a set. The remaining old strut is likely weak and will cause the new strut to wear out much faster. Replacing both ensures even lifting force and a longer service life.
Cost of Replacing BMW M3 Trunk Lift Supports
| Part Type | Estimated Cost (Pair) |
|---|---|
| New Aftermarket (Lesjofors, Stabilus) | $30 - $75 |
| New OEM (Genuine BMW) | $140 - $190 |
| Shop Labor | $50 - $100 |
Cost estimates are for parts only (as a pair) and do not include taxes or shipping. Labor costs vary by location.
Frequently Asked Questions
Is this a difficult part to replace myself?
No, this is one of the easiest DIY jobs you can do. It typically takes 5-15 minutes and only requires a small flat-head screwdriver to release the clips on the old struts. The new struts usually just snap into place. Be sure to have someone (or a prop rod) hold the trunk open while you work.
Are there any recalls for M3 trunk struts?
No, there are no recalls or common Technical Service Bulletins (TSBs) for premature trunk strut failure on the 2008-2018 M3. This is considered a standard wear-and-tear item that fails due to age.
Will adding a spoiler affect my trunk struts?
Yes. The stock struts are designed for the weight of the factory trunk lid. Adding a heavier aftermarket spoiler will put more strain on the struts, causing them to wear out faster and potentially not hold the trunk up at all. You may need to find stronger, higher-pressure struts if you add a heavy spoiler.
Can I just replace one strut?
It is highly recommended to replace both struts at the same time. A new strut paired with an old, weak one will have to do most of the work, leading to premature failure of the new part. Replacing them in pairs ensures proper and safe operation.
Technical Specifications
OEM Part Numbers: 51247250308 (E90 Sedan) 51247129194 (E92 Coupe) 51247259763 (F80 Sedan)
Gas-charged pressurized strut with ball-and-socket end fittings.
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 M3: