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BMW E30 3-Series Control Arm Variations
This article discusses the front suspension control arm (a.k.a. wishbone) for the E30 as sold in the US. If you're not here for the technical analysis but would rather buy a used unit from us, guaranteed to work and fit, then please select the link below:
Last Updated: 07/28/2018
Parts Group: Suspension control arm with ball joint
The information herein is based on a deep online dive into part numbers.
- Suspension control arm with ball joint (Driver, Front, Steel), as on: E30 ix, Part Number: 31121701059
- Suspension control arm with ball joint (Driver, Front, Steel), as on: E30 M3 1987 & 1988, E30 with M10 engine, E30 with M20 engine non-ix, E30 with M42 engine, Part Number: 31121127725
- Suspension control arm with ball joint (Passenger, Front, Steel), as on: E30 ix, Part Number: 31121701060
- Suspension control arm with ball joint (Passenger, Front, Steel), as on: E30 M3 1987 & 1988, E30 with M10 engine, E30 with M20 engine non-ix, E30 with M42 engine, Part Number: 31121127726
Three variations of the front suspension control arm are used. The E30 "ix" models (the 4-wheel drive models) are different from the other E30 models as to this part. The driver side part number is 1701059, and the passenger side part number is 1701060.
The M3 from 1989 and on uses aluminum control arms, to save weight.
However, the 1987 & 1988 M3 use the same steel control arms as the other non-M3, non-ix E30 models. The driver side part number is 1127725, and the passenger side part number is 1127726.