My BMW maintenance package had expired, so I was now responsible for replacing consumables myself. I could have taken it to a dealer, but since I enjoy doing my own maintenance and want to save money, I decided to tackle the easy jobs at home. This time: engine air filter replacement.
Service record
- Previous replacement: December 2018
- This replacement: June 2020 (18 months of use)
- Mileage at previous replacement: 165,317 km
- Mileage at this replacement: 244,290 km (78,973 km since last change)
- Part cost: approx. ¥6,653 (aftermarket OEM-equivalent)
How to replace it
The job is straightforward: remove the engine cover, swap the filter element, and refit the cover. No tools required.
Step 1 – Remove the engine cover
The engine cover is held by four clips. Pull each one straight upward with firm pressure and the cover lifts off cleanly.
Step 2 – Swap the filter element
Give the inside of the housing a quick wipe, then drop in the new filter element. It’s held by simple clips, so no force needed. Refit the cover and you’re done.
The used filter was moderately dirty but not alarming after 79,000 km. I plan to do the next change a little earlier — somewhere around 300,000 km.
Which filter to buy
I used an OEM-equivalent aftermarket filter sourced online. AliExpress has several sellers offering compatible filters for the F25 X3 (OEM part number 13717811026) at a fraction of dealer price. Search for “BMW F25 X3 air filter 13717811026” and compare sellers by rating and review count.
BMW F25 X3 Engine Air Filter – OEM 13717811026
Available on AliExpress
Did it make a difference?
Honestly, I couldn’t feel any difference in how the car drove after the swap. At the same time I also tried an aluminium tape mod, which did seem to improve fuel economy and steering feel — but it’s impossible to say how much of that was the fresh air filter versus the tape. Either way, routine maintenance done.
