Delphi Suspension Ball Joint P/N:TC4240

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$13.99
MPN: TC4240
UPC: 689604398531
Item Package Quantity: 1
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Delphi Suspension Ball Joint P/N:TC4240
Delphi Suspension Ball Joint P/N:TC4240
$13.99

Keep your steering and suspension precisely linked with the DELPHI ball joint (MPN TC4240), a front lower ball joint that drops in as a direct-fit replacement for the 2008-2015 Smart Fortwo (see the Buyer's Guide tab for full engine details). It pivots the front lower control arm against the steering knuckle, allowing the suspension to travel and the wheels to steer while keeping the connection tight.

Delphi builds on the OE expertise behind millions of vehicles worldwide, testing to the extreme — parts withstand below -40°C to over 120°C and endure 720 hours of salt spray.

  • High-quality forgings: manufactured for increased strength and smooth operation.
  • Chloroprene rubber boots: improve durability and help prevent premature failure.
  • Micron tolerances: machined precisely for durable, smooth joint operation.
  • Anti-corrosion protection: applied to each part for corrosion prevention and enhanced aesthetics.

Signs this part may need replacing include clunking over bumps, wandering or loose steering, and uneven front tire wear — diagnose the cause before replacing, as these symptoms can have other sources. If a worn front lower ball joint is the cause, this Delphi unit replaces it.

Interchange: 451 330 00 10
4513300010 · BJ39055PR · MS10576 · X46BJ3849

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

BJ39055PR, 451 330 00 10, MS10576, X46BJ3849

Frequently Asked Questions

Does this DELPHI ball joint fit my Smart Fortwo?

Yes, it is a direct-fit replacement for the 2008-2015 Smart Fortwo. Check the Buyer's Guide tab to confirm it matches your specific vehicle and engine.

What position is this ball joint?

It is the front lower ball joint, connecting the front lower control arm to the steering knuckle.

What does a ball joint do?

It forms a pivoting connection between the control arm and steering knuckle, letting the suspension travel while allowing the wheel to steer.

What are signs this ball joint may need replacing?

Common signs include clunking over bumps, wandering or loose steering, and uneven front tire wear. Have the cause diagnosed, since these can have other sources.

Does it include a boot?

Yes, Delphi ball joints use chloroprene rubber boots that improve durability and help prevent premature failure.