Standard Ignition 4WD Switch TCA-38 - view 2

Standard Ignition 4WD Switch TCA-38 - view 3

Standard Ignition 4WD Switch P/N:TCA-38

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$101.99

MPN: TCA-38

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Standard Ignition 4WD Switch P/N:TCA-38

$101.99

Description

Put four-wheel drive engagement back in your hands with the Standard Ignition 4WD Switch TCA-38, a Four Wheel Drive Actuator Switch that installs as a direct-fit replacement on the 1997-1999 Ford Expedition and 1998-1999 Lincoln Navigator (see the Buyer's Guide tab for engine specifics). This switch handles the driver's 4WD selection signal, so a worn or failed original can leave the transfer case unresponsive when you try to shift into four-wheel drive.

Direct-fit OE replacement: designed to drop into the factory location for straightforward installation.
Built for tough conditions: high-quality materials chosen to hold up under extreme operating conditions.
Tested for reliability: undergoes extensive testing to confirm consistent performance.
Quality-controlled manufacturing: produced under full quality control from a global aftermarket parts manufacturer.

If a faulty 4WD selector switch is the cause of your four-wheel drive not engaging, this replaces it. Diagnose the underlying condition before installing, since the same symptom can involve other components in the 4WD system.

Interchange: FWA123 · SW3917 · FWD50 · F75Z14B166AA

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

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

FWA123, SW3917, FWD50, F75Z14B166AA

Frequently Asked Questions

What vehicles does the TCA-38 fit?

It is a direct-fit replacement for the 1997-1999 Ford Expedition and 1998-1999 Lincoln Navigator. Check the Buyer's Guide tab to confirm the match for your vehicle.

What does this 4WD switch do?

It carries the driver's four-wheel drive selection signal so the system can respond when you choose to engage 4WD.

What are signs this switch may need replacing?

Signs may include four-wheel drive failing to engage or an unresponsive 4WD selection. Diagnose the cause first, as other components can produce similar symptoms.

Is this a direct-fit part?

Yes. Standard Ignition lists it as a direct-fit OE replacement designed to install in the factory location for ease of installation.

What numbers does the TCA-38 interchange with?

It replaces FWA123, SW3917, FWD50, and F75Z14B166AA.