Please, select the appropriate vehicle to verify whether it is suitable
SIDEM 21978 Suspension arm for BMW X3, X4 Lower, Front, Front Axle Left, Trailing Arm, Steel, Push Rod
- Fitting Position: Lower, Front, Front Axle Left
- Control / Trailing Arm Type: Trailing Arm
- Material: Steel
- Cone Size [mm]: 18,1
- Paired product: 21979
- Rod / Strut: Push Rod
- Observe service information
- Item number: 21978
- Manufacturer: SIDEM
- EAN number: 5413978234400
- Condition: New
price incl. 20% VAT
excl. delivery costs
OE reference number(s) comparable with the original spare part number:

Fully equivalent products
Suspension arm SIDEM 21978 compatible with the following popular cars
Car models | BMW X3 F25; BMW X4 F26 |
Engines | xDrive 30 d; xDrive30d; sDrive 28i; sDrive 20i; xDrive20d; sDrive18d; xDrive28i; xDrive 20 d; xDrive 35 i; xDrive20i; xDrive35d; xDrive28i 2.0; M 40 i; xDrive 35 d; xDrive 28 i; xDrive 20 i |
Engine power (horsepower) | 136-360 hp |
Power (kilowatts) | 100-265 kW |
Year of manufacture | 2010-2018 |
Manufacturer article number | 21978 |
OE part number(s) | 31 10 6 787 673 |
Have you ever bought this product from AUTODOC: SIDEM Suspension arm 21978?
Customer reviews and star ratings help our customers learn more about a product and decide whether it is worth buying. A complex algorithm is used to calculate the star rating, taking into consideration how long ago the review was made, whether the item was actually purchased in the AUTODOC online shop, and whether it was returned or not.
The tag "verified purchase" allows you to find reviews from customers who have actually purchased the item in question from the AUTODOC online shop. The "verified purchase" label applies to reviews of items purchased from the same account the reviews were submitted from. We still consider reviews without the "verified purchase" tag to be important, but we can't guarantee that the items described in such reviews were purchased in the AUTODOC online shop.
Questions and answers
SIDEM 21978: popular articles
Would you like to learn more about SIDEM Trailing arm ?
Read the Suspension arm 21978 FAQ and customer reviews!
Need help? Contact us
Each order from £ 130 value of goods, include free shipping within Great Britain. If order total is less than £ 130, shipping cost will be £ 8,45