Delphi TC3865 rear upper control arm with ball joint for the 2015-2026 BMW M4 and other vehicles links the wheel to the chassis and pivots through its ball joint. The arm and joint come as one piece, sold as a control arm and ball joint assembly.
- 100% crack detection and ultrasonic flaw detection on every Delphi control arm
- Ball studs machined to micron tolerances for durability and smooth joint operation
- Robot-welded construction for consistent performance and quality
- Anti-corrosion protection applied to each part
- Tested below -40 degrees C and over 120 degrees C, and through 720 hours of salt spray
Quick facts
- Part: Delphi TC3865 control arm with ball joint
- Also called: control arm and ball joint assembly
- Fits: 2015-2026 BMW M4 and other vehicles
- Position: Rear upper
- Condition: New
A clunk or knock from the rear over bumps, vague handling or uneven tire wear can mean this arm or its ball joint is worn. A rear shock absorber or a rear subframe bushing can be behind the same noise or looseness, so find which part is at fault before you replace anything.
Fits
It fits the 2015-2026 BMW M4, the 2015-2018 and 2021-2025 BMW M3 and the 2016-2021 and 2023-2025 BMW M2, and each of them takes two. This listing is one arm; the other side of the rear axle needs its own, and the pair is normally done at the same time.
Specifications
Fit and size
- Position: Rear upper
- Quantity per vehicle: 2
- Sold individually: one arm per listing
Build and materials
- Type: control arm with ball joint, one assembly
- Construction: robot-welded
- Ball studs: machined to micron tolerances
- Corrosion protection: anti-corrosion protection applied
- Condition: New
Interchange: 33 32 2 284 777
