Help keep your front suspension pivoting smoothly and your steering tight with the Delphi ball joint (TC5057), a front lower inner suspension ball joint built as a direct-fit replacement for the 2007-2011 Mini Cooper. It forms the pivoting connection between the control arm and steering knuckle, letting the suspension move through its travel while the wheel steers.
Delphi applies its OE steering expertise to this aftermarket part, testing to extremes for OE-level performance — validated below -40°C and above 120°C and through 720 hours of salt spray, with extensive dimensional and material analysis for close OE-to-aftermarket compatibility.
- Forged construction: made with high-quality forgings for added strength and smooth operation.
- Chloroprene rubber boot: improves durability and helps prevent premature failure.
- Micron-tolerance machining: machined to micron tolerances for durability and smooth joint operation.
- Anti-corrosion protection: applied to each part for corrosion prevention and enhanced appearance.
Signs this 2007-2011 Mini Cooper ball joint may need replacing include clunking over the suspension, loose or wandering steering, and uneven tire wear. Diagnose the cause before replacing. This part fits the front lower inner position.
Interchange: 102-7604 · 526-944
1027604 · 526944 · 31124048628 · SL63011 · BJ29035 · CB29024 · MS10528
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
31124048628, 102-7604, 526-944, SL63011, BJ29035, CB29024, MS10528
Frequently Asked Questions
Does this Delphi ball joint fit my 2007-2011 Mini Cooper?
It is a direct-fit replacement for the 2007-2011 Mini Cooper. See the "Vehicles it fits" section to confirm the exact fit for your vehicle.
What position is the TC5057 ball joint?
It is the front lower inner suspension ball joint.
What does a ball joint do?
It forms the pivoting connection between the control arm and steering knuckle, allowing the suspension to move through its travel while the wheel steers.
What are signs my ball joint may need replacing?
Clunking over the suspension, loose or wandering steering, and uneven tire wear can be signs. Diagnose the cause before replacing, since these symptoms have other possible sources.
How is this Delphi ball joint built?
It uses high-quality forgings, a chloroprene rubber boot, and micron-tolerance machining, with anti-corrosion protection applied to each part.
