Standard Ignition Transfer Case Switch DS-3393
Standard Ignition Transfer Case Switch DS-3393 - view 2
Standard Ignition Transfer Case Switch DS-3393 - view 3
Standard Ignition Transfer Case Switch DS-3393
Standard Ignition Transfer Case Switch DS-3393 - view 2
Standard Ignition Transfer Case Switch DS-3393 - view 3

Standard Ignition Transfer Case Switch P/N:DS-3393

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$41.99
MPN: DS-3393
UPC: 727943218155
Item Package Quantity: 1
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Standard Ignition Transfer Case Switch P/N:DS-3393
Standard Ignition Transfer Case Switch P/N:DS-3393
$41.99

Keep your four-wheel-drive selection responding the way it should with the Standard Ignition Transfer Case Switch DS-3393 (also written DS3393). This direct-fit replacement swaps in for a damaged or worn original to restore transfer case shifting and 4WD engagement on the 2003 Ford Excursion, 1999-2004 Ford F-250 Super Duty, 1999-2003 Ford F-350 Super Duty, 1999-2003 Ford F-450 Super Duty, and 1999-2003 Ford F-550 Super Duty. See the Buyer's Guide tab for engine-level fitment details.

  • Made to OE spec: built for proper fit, form and function against the original unit.
  • Copper alloy conductors: deliver strong electrical conductivity with low resistive losses.
  • Restores 4WD control: designed to replace a failed OE switch and bring back transfer case shifting functions and four-wheel-drive selection.
  • Robust construction: high-grade materials built to meet the demands of the service professional.

If a faulty transfer case switch is the cause of erratic or non-responsive 4WD engagement, this DS-3393 replaces it. Diagnose the cause before replacing to confirm the switch is at fault.

Interchange: S52195 · SW4770 · FWD74 · PA3543 · 5C3Z7E440AA · BC3Z7E440A · F81Z7E440AA · SW5242 · SW6341 · SW6857

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

S52195, SW4770, FWD74, PA3543, 5C3Z7E440AA, BC3Z7E440A, F81Z7E440AA, SW5242, SW6341, SW6857

Frequently Asked Questions

What does the transfer case switch do?

It's an electrical switch tied to the transfer case that signals shift position, helping control four-wheel-drive selection and transfer case shifting functions.

Will the DS-3393 fit my truck?

It's a direct-fit replacement for the 2003 Ford Excursion and 1999-2004 F-250 and 1999-2003 F-350, F-450, and F-550 Super Duty. Check the Buyer's Guide tab to confirm your vehicle.

What are signs this switch may need replacing?

Erratic, delayed, or non-responsive 4WD engagement or transfer case shifting can point to a failed switch. Diagnose the cause first to confirm the switch is at fault.

Is this switch made to OE specifications?

Yes. It's built to OE spec for proper fit, form and function, with copper alloy conductors for strong electrical conductivity and low resistive losses.

What numbers does this part interchange with?

It cross-references S52195, SW4770, FWD74, PA3543, 5C3Z7E440AA, BC3Z7E440A, F81Z7E440AA, SW5242, SW6341, and SW6857.

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