Help keep the front suspension tight and the wheel properly located with the Delphi Suspension Control Arm and Ball Joint Assembly, MPN TC7691 — a front left upper control arm and ball joint assembly. This DELPHI control arm drops in as a direct-fit replacement for the 2006-2010 Ford Explorer, the 2007-2010 Ford Explorer Sport Trac, and the 2006-2010 Mercury Mountaineer (see the "Vehicles it fits" section for engine-level fitment).
Delphi builds on its OE steering and suspension expertise, testing parts to the extreme — below -40°C, above 120°C, and through 720 hours of salt spray — with dimensional and material analysis to match the OE part.
- OE-matched quality: 100% crack detection and ultrasonic flaw detection so materials match OE specifications.
- Micron-machined ball studs: studs machined to micron tolerances for durability and smooth joint operation.
- Robot-welded: consistent welds for repeatable performance and quality.
- Corrosion protection: anti-corrosion protection applied to each part for corrosion prevention and enhanced aesthetics.
Signs this control arm may need replacing include clunking on acceleration or over bumps, loose or wandering steering, and uneven front tire wear. This left-side assembly is sold individually; replacing both sides together is recommended for balanced handling.
Interchange: 623.65019 · 521-355 · 6L2Z 3085-AA · 531-776
62365019 · 521355 · 6L2Z3085AA · 531776 · BJ85026 · BJ85026XL · CB85057 · CB85057PR · BC851029 · BC851029PR · CK80723 · K200356 · K500014 · RK80723 · CMK80723 · GK80723 · JTC2110
This part cross-references / interchanges with the following part numbers:
623.65019, 521-355, BJ85026, BJ85026XL, CB85057, CB85057PR, 6L2Z 3085-AA, 531-776, BC851029, BC851029PR, CK80723, K200356, K500014, RK80723, CMK80723, GK80723, JTC2110
Frequently Asked Questions
What is this Delphi TC7691 part?
It's a front left upper suspension control arm with a pre-assembled ball joint. It locates the wheel and lets the suspension move while keeping alignment geometry in place.
Does it fit my 2006-2010 Ford Explorer?
Yes, it is a direct-fit 2006-2010 Ford Explorer control arm. Check the "Vehicles it fits" section for the full fitment list and engine-level details.
Is this an upper or lower control arm?
The catalog lists this as a front left upper control arm assembly. It is not a lower control arm.
How is the ball joint made?
Delphi machines the ball studs to micron tolerances for durability and smooth joint operation, and the arm is robot-welded for consistent quality.
Should I replace both sides?
This left-side assembly is sold individually. Replacing the left and right upper arms together is recommended for balanced, even handling.
