Delphi Suspension Control Arm and Ball Joint Assembly TC1392
Delphi Suspension Control Arm and Ball Joint Assembly TC1392

Front Left Lower Control Arm with Ball Joint for 2006-2010 BMW 550i & More - Delphi TC1392

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$93.99
WARNING:California Proposition 65▾
MPN: TC1392
UPC: 689604252222
Item Package Quantity: 1
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Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC1392
Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC1392
$93.99

Keep your front suspension tight and your steering precise with the Delphi control arm and ball joint assembly, part number TC1392. This is the front left lower rearward unit, offered as a direct-fit replacement for many vehicles, among them the 2008-2010 BMW 528i, 2008-2010 BMW 535i and 2006-2010 BMW 550i. See the Buyer's Guide tab for the full list and engine-level fitment.

  • OE-validated engineering: Delphi applies its OE steering expertise and tests to the extreme — parts withstand below -40°C to over 120°C and 720 hours of salt spray, with dimensional and material analysis for OE-to-aftermarket compatibility.
  • 100% inspected: Each control arm undergoes crack detection and ultrasonic flaw detection so materials match OE specifications.
  • Precision ball studs: Ball studs machined to micron tolerances for durability and smooth joint operation.
  • Robot-welded, corrosion-protected: Robot welding delivers consistent quality, and anti-corrosion protection is applied to each part for corrosion prevention and enhanced appearance.

The control arm locates the wheel and helps manage suspension movement, while the integrated ball joint lets the steering knuckle pivot and travel. Worn signs include clunking over bumps, loose or wandering steering, and uneven front tire wear. If a failed control arm or ball joint is the cause, this assembly replaces both in one part. Sold individually; inspect and service the matching side as needed.

Frequently Asked Questions

Is this the right control arm for a 2008-2010 BMW 528i?

Yes. It's cataloged as the front left lower rearward unit for the 2008-2010 BMW 528i, and also fits the 2008-2010 BMW 535i and 2006-2010 BMW 550i, among many others. Confirm your vehicle in the Buyer's Guide tab.

Does this part include the ball joint?

Yes — the ball joint is integrated into the control arm, so you replace both together as one unit instead of pressing a separate joint into an old arm.

What are the signs I need a new control arm?

Clunking over bumps, loose or wandering steering, and uneven front tire wear can point to a worn control arm or ball joint. Diagnose the cause before replacing.

What quality checks does Delphi use on this part?

Delphi control arms undergo 100% crack and ultrasonic flaw detection, the ball studs are machined to micron tolerances, the arms are robot welded, and anti-corrosion protection is applied to each part.

Which side and position is this control arm?

This is the front left lower rearward control arm. Inspect the opposite side and replace it too if it is worn, for balanced front suspension performance.

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