Standard Ignition Automatic Transmission Control Solenoid P/N:TCS203

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$171.99
MPN: TCS203
Item Package Quantity: 1
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Standard Ignition Automatic Transmission Control Solenoid P/N:TCS203
Standard Ignition Automatic Transmission Control Solenoid P/N:TCS203
$171.99

Keep your automatic transmission shifting crisply with the Standard Ignition Transmission Control Solenoid TCS203. This electro-hydraulic solenoid directs transmission fluid pressure on command from the control module, and it drops in as a direct-fit replacement for the 2009-2014 Hyundai Sonata [All] and 2014-2015 Kia Cadenza [All].

  • 100% copper winding: delivers positive valve actuation on command.
  • Precision-ground pintle: moves freely to block or vent fluid pressure.
  • Stainless steel filter screen: helps prevent contamination of the valve components.
  • OE-matched electrics: resistance and inductance matched to OE for proper fit, form and function.

The solenoid ships with a 5.75 in (146 mm) wiring harness and a single rectangular female connector using two male blade terminals in a push-on attachment. If a failed control solenoid is behind harsh, slipping, or erratic shifts, replacing it with the TCS203 restores that circuit's fluid control — always diagnose the cause before replacing. Gaskets, hardware, and mounting bracket(s) are not included. Country of origin: Korea, Republic of.

Interchange: TCS126 · TCS746 · 548403R000AS · 8403R000 · 958403R000

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

TCS126, TCS746, 548403R000AS, 8403R000, 958403R000, TCS203

Frequently Asked Questions

What vehicles does the TCS203 fit?

It is a direct-fit replacement for the 2009-2014 Hyundai Sonata [All] and the 2014-2015 Kia Cadenza [All]. See the Buyer's Guide tab to confirm fitment for your vehicle.

What does this transmission control solenoid do?

It uses a precision-ground pintle to block or vent transmission fluid pressure on command from the control module, directing hydraulic flow that controls shifting.

Does it include a wiring harness?

Yes. It comes with a 5.75 in (146 mm) harness and one rectangular female connector using two male blade terminals with a push-on attachment.

Are gaskets or mounting hardware included?

No. Gaskets, hardware, and mounting bracket(s) are not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.

What are signs this solenoid may need replacing?

Harsh, slipping, delayed, or erratic shifts can signal a faulty control solenoid. Diagnose the cause first, since these symptoms can have other sources.