Delphi Suspension Ball Joint P/N:TC4277

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$37.99
MPN: TC4277
UPC: 689604398906
Item Package Quantity: 1
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Delphi Suspension Ball Joint P/N:TC4277
Delphi Suspension Ball Joint P/N:TC4277
$37.99

Keep your steering tight and your front suspension safely located with this Delphi ball joint, the Front Upper Suspension Ball Joint TC4277. It fits many vehicles, among them the 1998-2005 Hyundai Sonata, 2001-2006 Kia Optima and 2002-2005 Hyundai XG350, as a direct-fit replacement for the listed applications; see the Buyer's Guide tab for the full list. This ball joint connects the front upper control arm to the steering knuckle, pivoting to allow suspension travel and steering motion. Worn ball joints may show up as clunking over irregularities, loose or wandering steering, or uneven tire wear.

  • Forged construction: made with high-quality forgings for increased strength and smooth operation.
  • Chloroprene rubber boot: improves durability and helps prevent premature failure.
  • Micron-tolerance machining: Delphi machines to micron tolerances for durable, smooth joint operation.
  • Anti-corrosion protection: applied to each part for corrosion prevention and enhanced aesthetics.

Delphi applies its OE steering expertise to this aftermarket part, testing to withstand temperatures below -40°C and over 120°C plus 720 hours of salt spray, with dimensional and material analysis for OE-level compatibility. This part installs at the front upper position; sold individually, and replacing both sides together is recommended for balanced steering feel.

Interchange: 101-4977 · 539-791 · 54403-38A00
1014977 · 539791 · 5440338A00 · K500167 · MS90511 · X18BJ1833

This part cross-references / interchanges with the following part numbers:

101-4977, 539-791, 54403-38A00, K500167, MS90511, X18BJ1833

Frequently Asked Questions

Is this the right 1998-2005 Hyundai Sonata ball joint?

Yes, the TC4277 is a direct-fit front upper ball joint for the 1998-2005 Hyundai Sonata. See the Buyer's Guide tab to confirm your exact year and engine.

Does this fit a 2001-2006 Kia Optima?

Yes, it is a direct-fit front upper ball joint for the 2001-2006 Kia Optima. See the Buyer's Guide tab for the full list of vehicles.

What position is this ball joint?

This TC4277 is a front upper suspension ball joint, connecting the front upper control arm to the steering knuckle.

How do I know if I need a ball joint replacement?

Signs a ball joint may need replacing include clunking over bumps, loose or wandering steering, and uneven tire wear. Have the cause diagnosed before replacing.

Do I need to replace both sides?

It is sold individually. Replacing both left and right sides together is recommended for balanced steering and even wear, though not strictly required.