Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC9178

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$160.99
MPN: TC9178
UPC: 689604409053
Item Package Quantity: 1
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Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC9178
Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC9178
$160.99

Restore precise steering and suspension geometry with the Delphi Suspension Control Arm and Ball Joint Assembly TC9178, a front left lower rearward assembly that locates the wheel and carries the integrated ball joint on select Mercedes-Benz sedans. It fits the 2016-2017 Mercedes-Benz Maybach S600, 2018-2020 Mercedes-Benz Maybach S650, 2018-2020 Mercedes-Benz S450, 2014-2017 Mercedes-Benz S550, 2015-2017 Mercedes-Benz S550E, 2018-2021 Mercedes-Benz S560, and 2019-2020 Mercedes-Benz S560E — see the Buyer's Guide tab for engine-level details.

  • OE-derived engineering: built on Delphi's OE safety technology, with dimensional and material analysis aimed at close OE-to-aftermarket compatibility.
  • Validated to extremes: tested below -40°C and above 120°C and exposed to 720 hours of salt spray.
  • Inspected construction: 100% crack detection and ultrasonic flaw detection help confirm materials match OE specifications, with robot welding for consistent quality.
  • Precision joint: ball studs machined to micron tolerances for smooth joint operation; anti-corrosion protection applied to each part.

If a worn control arm or ball joint on this corner is the cause of clunking on acceleration or bumps, loose steering, or uneven tire wear, this assembly replaces it. Sold individually.

Interchange: 526-273 · 222 330 01 07 · A 222 330 01 07
526273 · 2223300107 · A2223300107 · 1028059 · 222330010728 · CMS101492 · X31CJ0336

This part cross-references / interchanges with the following part numbers:

1028059, 526-273, 222 330 01 07, 222330010728, A 222 330 01 07, CMS101492, X31CJ0336

Frequently Asked Questions

What position does this control arm fit?

It is the front left lower rearward control arm and ball joint assembly for the listed Mercedes-Benz applications.

Which vehicles does the TC9178 fit?

It fits Mercedes-Benz models: the 2016-2017 Maybach S600, 2018-2020 Maybach S650, 2018-2020 S450, 2014-2017 S550, 2015-2017 S550E, 2018-2021 S560, and 2019-2020 S560E. See the Buyer's Guide tab.

Is the ball joint included?

Yes. This is a complete control arm and ball joint assembly, with the ball studs machined to micron tolerances for smooth joint operation.

What are signs this part may need replacing?

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

How is it protected against rust?

Anti-corrosion protection is applied to each part, and Delphi exposes the assembly to 720 hours of salt spray during testing.