Keep the front suspension located and the steering precise with the Delphi control arm (P/N: TC3746), a direct-fit front left lower replacement for the 2015-2019 Ford Transit-150, 2015-2019 Ford Transit-250, 2015-2019 Ford Transit-350, and 2015-2019 Ford Transit-350 HD. This arm positions the wheel and links it to the chassis while its integrated ball joint allows steering and suspension travel; worn examples show up as clunks over the road, loose or wandering steering, and uneven tire wear.
- OE-derived engineering: Delphi applies its OE steering and suspension expertise to the aftermarket, with extensive dimensional and material analysis for close compatibility between the OE and replacement part.
- Tested to the extreme: validated below -40°C and above 120°C and subjected to 720 hours of salt spray for OE-level performance.
- Quality-verified builds: 100% crack detection and ultrasonic flaw detection confirm the material matches OE specifications, with robot welding for consistent quality.
- Precision joints & protection: ball studs machined to micron tolerances for smooth joint operation, plus anti-corrosion protection applied to each part.
See the Buyer's Guide tab for the full engine-level fitment.
Interchange: 524-877 · BK3Z 3079-A · CK4Z-3079-A
524877 · BK3Z3079A · CK4Z3079A · B5313A053AC · BK313A053AC · BK313A053AD · BK313A053AE · BK313A053AF · BK313A053AH · BK3Z3079C · CA85483 · RK643406 · CMS401164
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Does this Delphi control arm fit my Ford Transit?
It is a direct-fit front left lower control arm for the 2015-2019 Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD. Check the Buyer's Guide tab to confirm your exact vehicle.
What position is this control arm?
This is the front left lower control arm. Order the corresponding side and position for your vehicle, and replace as directed by the service procedure.
What are the signs my control arm needs replacing?
Common signs include clunking over bumps during acceleration or turns, loose or wandering steering, and uneven tire wear. Diagnose the cause before replacing.
How is this Delphi control arm tested for durability?
Delphi validates it below -40°C and above 120°C, exposes it to 720 hours of salt spray, and uses 100% crack and ultrasonic flaw detection to confirm the material matches OE specifications.
Where can I find Delphi control arm reviews and part numbers?
This is Delphi P/N: TC3746. It cross-references numbers such as 524-877, BK3Z 3079-A, and CK4Z-3079-A; see the interchange list above for all equivalents.
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