Keep steering precise and suspension travel controlled with the Delphi control arm (P/N: TC3437), a front left lower forward control arm and ball joint assembly that drops in as a direct-fit replacement for the listed BMW applications. It locates the wheel and, through its integrated ball joint, allows the suspension to travel while steering — worn examples often show clunking over bumps or when turning, loose or wandering steering, and uneven tire wear.
Delphi builds on its OE safety expertise and tests to the extreme for OE performance:
Fits applications including the 2015-2016 BMW 228i xDrive, 2017-2020 BMW 230i xDrive, 2013-2018 BMW 320i xDrive, 2013-2016 BMW 328i xDrive and 2017-2020 BMW M240i xDrive — see the Buyer's Guide tab for the full list and engine details.
Interchange: 31 12 6 854 723 · 521-241
31126854723 · 521241 · 1028122 · CB14453 · CB14453PR · RK623484 · CMS101377 · GS101377 · JTC1623
This part cross-references / interchanges with the following part numbers:
What position does the Delphi TC3437 fit?
It is the front left lower forward unit for the listed BMW applications. Confirm your vehicle in the Buyer's Guide before ordering.
Does this Delphi control arm come with the ball joint?
Yes, the ball joint is integrated into the arm, so it installs as one complete unit.
What are signs this control arm may need replacing?
Common signs include clunking over bumps or when turning, loose or wandering steering, and uneven tire wear. Diagnose the cause before replacing.
How is the Delphi part validated for durability?
Delphi tests to extremes: parts endure below -40°C to over 120°C and 720 hours of salt spray, with 100% crack detection and ultrasonic flaw detection to match OE specifications.
Where can I find Delphi control arm reviews and fitment details?
Check the product listing and the Buyer's Guide tab for the full application list. It fits many 2013-2020 BMW xDrive models.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
