Delphi TC358 front left lower control arm with ball joint for the 1978-1983 BMW 320i links the wheel to the chassis and pivots at the ball joint as the suspension moves. This control arm and ball joint assembly comes as one unit, so the arm and the joint are replaced together.
- Tested below -40 degrees C and over 120 degrees C and through 720 hours of salt spray
- 100% crack detection and ultrasonic flaw detection on every control arm
- Ball studs machined to micron tolerances for durability and smooth joint operation
- Robot-welded control arm for consistent performance and quality
- Anti-corrosion protection applied to each part
Quick facts
- Part: Delphi TC358 front left lower control arm with ball joint
- Also called: control arm and ball joint assembly
- Fits: 1978-1983 BMW 320i
- Position: Front left lower
- Condition: New
A worn lower arm or ball joint can show up as a clunk over bumps, loose or wandering steering, or uneven front tire wear. Worn sway bar links, tie rod ends, struts or wheel bearings can be behind these signs too, so find the cause before buying a new arm.
Fits
This is a direct-fit replacement control arm for the 1978-1983 BMW 320i, which takes one on each side of the front axle. Front control arms are normally swapped as a pair; this listing is one arm for the front left, and the front right is ordered separately.
Specifications
Fit and size
- Position: Front left lower
- Quantity per vehicle: 1 for this position
Build and materials
- Type: control arm with ball joint assembly
- Ball studs: machined to micron tolerances
- Construction: robot-welded
- Finish: anti-corrosion protection on each part
- Condition: New
Interchange: 101-3768 · 102-3768
3112 1123 025 · K9119 · RK9119 · FA1481 · CMK9119 · JTC136
This part cross-references / interchanges with the following part numbers:
3112 1123 025, 101-3768, 102-3768, K9119, RK9119, FA1481, CMK9119, JTC136
Frequently Asked Questions
Does the Delphi TC358 fit the front left of a 1978-1983 BMW 320i?
Yes. Delphi TC358 is the front left lower control arm with ball joint for the 1978-1983 BMW 320i. The front right side is a separate part.
Does this Delphi control arm come with the ball joint already on it?
Yes. The ball joint is part of this assembly, so the arm and the joint are replaced as one unit.
How are the ball studs on the Delphi TC358 made?
The Delphi TC358 has ball studs machined to micron tolerances, which is meant to give durability and smooth joint operation.
Why does my front end clunk over bumps, and could a worn lower ball joint be involved?
A clunk over bumps, wandering steering or uneven front tire wear can mean a worn arm or ball joint. A shop can inspect the joint for play.
How is this front lower control arm tested for heat, cold and rust?
The parts withstand temperatures below -40 degrees C and over 120 degrees C and are exposed to 720 hours of salt spray. Anti-corrosion protection is applied to each part.
