Delphi Lateral Arm P/N:TC7040
Keep the rear suspension planted and precise with the Delphi Lateral Arm (MPN TC9099), a direct-fit replacement for the rear-forward position on the 1998-2002 Subaru Forester and 1997-2007 Subaru Impreza. This link locates the wheel and controls lateral movement of the suspension, and a worn one can show up as clunking, uneven tire wear, or vague, wandering handling — if the original arm is the cause, this replaces it.
Delphi applies its OE steering and suspension expertise to this aftermarket arm, backed by extensive dimensional and material analysis for close OE compatibility.
For engine-level applications, see the "Vehicles it fits" section for the full list.
Interchange: 524-785 · 20250 AC100
524785 · 20250AC100 · CMS80187
This part cross-references / interchanges with the following part numbers:
What vehicles does the Delphi TC9099 lateral arm fit?
It's a direct-fit replacement for the 1998-2002 Subaru Forester and 1997-2007 Subaru Impreza. Check the "Vehicles it fits" section to confirm the exact application for your vehicle.
Where does this lateral arm mount?
It's cataloged for the rear-forward position. It locates the wheel and controls lateral movement of the rear suspension.
What are the signs this lateral arm may need replacing?
Clunking over the rear, uneven tire wear, or vague, wandering handling can be signs. Diagnose the cause first, since these symptoms can come from other worn suspension parts.
Does it include installation accessories?
Yes. Delphi includes the necessary accessories for a complete job. Consult the vehicle service information for correct torque specs and fastener reuse.
How is this Delphi arm tested for durability?
It's validated below -40°C and over 120°C, exposed to 720 hours of salt spray, and undergoes 100% crack and ultrasonic flaw detection so materials match OE specifications.
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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.