Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC1957
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Keep your steering tight and your suspension geometry true with the Delphi control arm — MPN TC1957, a front right lower rearward unit that installs as a direct-fit replacement on the 2005-2009 Audi A4, 2005-2009 Audi A4 Quattro, 2005-2009 Audi S4, and 2007-2008 Audi RS4 (see the Buyer's Guide tab for engine-level fitment). This control arm and ball joint assembly locates the wheel and helps manage the loads that keep tires planted, and Delphi builds it with the OE expertise fitted to millions of vehicles worldwide.
Tested to the extreme: validated for OE performance below -40°C and over 120°C, plus 720 hours of salt-spray exposure, with dimensional and material analysis for OE-to-aftermarket compatibility.
100% inspected: every arm undergoes crack detection and ultrasonic flaw detection so the material matches OE specifications.
Precision ball studs: machined to micron tolerances for durable, smooth joint operation.
Robot-welded: for consistent quality, with anti-corrosion protection applied to each part for corrosion prevention and enhanced appearance.
Signs this part may need replacing include clunking on acceleration, deceleration, or over bumps, loose or wandering steering, and uneven tire wear — diagnose the cause before replacing.
Frequently Asked Questions
What vehicles does this Delphi TC1957 fit?
It is a direct-fit replacement for the 2005-2009 Audi A4, 2005-2009 Audi A4 Quattro, 2005-2009 Audi S4, and 2007-2008 Audi RS4. Check the Buyer's Guide tab for engine-level fitment.
Which corner does this Audi A4 control arm cover?
The catalog lists this as the front right lower rearward position. Confirm it matches the location you're replacing on your vehicle.
Is the ball joint included with this arm?
Yes. This is a control arm and ball joint assembly, so the ball stud comes pre-installed and machined to micron tolerances for smooth operation.
How is this Audi S4 control arm tested for durability?
Delphi validates it below -40°C and over 120°C, subjects it to 720 hours of salt spray, and runs 100% crack and ultrasonic flaw detection to match OE specifications.
What are signs this Audi A4 arm needs replacing?
Clunking on acceleration, deceleration, or over bumps, loose or wandering steering, and uneven tire wear can all point to a worn arm or ball joint. Diagnose the cause first.
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Delphi
Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC1957
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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.
