Delphi Suspension Control Arm and Ball Joint Assembly TC1177

Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC1177

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$30.99

MPN: TC1177

UPC: 689604251065

Item Package Quantity: 1

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Delphi Suspension Control Arm and Ball Joint Assembly P/N:TC1177

$30.99

Description

Keep your front suspension precisely located and your steering tight with the Delphi control arm and ball joint assembly (MPN TC1177). This is the front left upper forward corner unit, and it installs as a direct-fit replacement on many Audi and Volkswagen vehicles, among them the 1998-2005 Volkswagen Passat, 2004-2009 Audi S4 and 1996-2009 Audi A4. See the Buyer's Guide tab for the full list and engine-level fitment.

OE-derived engineering: Delphi applies its OE steering expertise to the aftermarket, using dimensional and material analysis for close compatibility between the OE and aftermarket part.
Tested to the extreme: validated below -40 degrees C and above 120 degrees C, and exposed to 720 hours of salt spray.
Quality-verified materials: 100% crack detection and ultrasonic flaw detection confirm materials match OE specifications, while robot welding delivers consistent build quality.
Micron-machined ball stud: the ball stud is machined to micron tolerances for durability and smooth joint operation, with anti-corrosion protection applied to each part.

A worn arm or joint can show up as clunking over bumps, loose or wandering steering, uneven front tire wear, or vibration. If a failed arm or ball joint is the cause, this assembly replaces both in one unit and helps locate the wheel at the front left upper forward position. Whether you need a 1998-2005 Volkswagen Passat control arm or a 2004-2009 Audi S4 control arm, TC1177 is listed for the front left upper forward position.

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

Frequently Asked Questions

What position is the Delphi TC1177?

It's the front left upper forward control arm assembly, supplying both the arm and its integrated ball joint in a single unit.

Is this the right control arm for a 1996-2009 Audi A4?

Yes, it's listed as a direct-fit for the 1996-2009 Audi A4 and also fits many other Audi and Volkswagen models, including the 1998-2005 Volkswagen Passat. See the Buyer's Guide tab for full fitment.

What are the signs my control arm or ball joint needs replacing?

Common signs include clunking over bumps, loose or wandering steering, uneven front tire wear, and vibration. Diagnose the underlying cause before replacing.

Is the ball joint included?

Yes — the ball joint is integrated into the assembly, and Delphi machines the ball stud to micron tolerances for smooth operation and durability.

Should I replace both sides?

This listing is for one assembly, sold individually. Replacing both sides together is recommended; inspect the matching component on the opposite side and follow the vehicle service information.