GEM Module

1999-2001 Ford F-250 Super Duty Generic Electronic Module GEM F81B-14B205-EP OEM

OEM Part Number F81B-14B205-EP
by Ford
$179.99
Sold out
Will this fit your vehicle? See the fitment table below to check.
BEFORE YOU BUY

VIN programming required after install

This module needs VIN programming after install. A dealer or locksmith with the right scan tool can do it. Not sure your installer can program? Message us first — we'll help you confirm.

PART CONDITION

Tested functional. Cleaned.

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This OEM Generic Electronic Module (GEM) — F81B-14B205-EP — fits 1999–2001 Ford F-250, F-350, F-450, and F-550 Super Duty trucks and 2000–2001 Ford Excursion, controlling body accessories including wipers, interior lighting, power windows and locks, warning chimes, and keyless entry. When the GEM begins to fail, multiple accessories tend to misbehave together rather than one at a time. Tested functional and cleaned.

From the shop

The GEM module (Generic Electronic Module) handles power distribution and body control functions across Ford's Super Duty and Excursion lineup. When it fails, you'll often see multiple electrical gremlins—dead power windows, non-responsive door locks, missing gauge cluster data, or intermittent lighting. This unit is tested functional and cleaned, ready to swap into 1999–2001 F-250, F-350, F-450, F-550 Super Duty, or Excursion models with 7.3L Powerstroke Diesel, 5.4L V8, or 6.8L V10 engines. OEM part F81B-14B205-EP with multiple interchange numbers on file.

— Hubes

Vehicle fitment

Fits 1999–2001 Ford F-250 Super Duty; 1999–2001 Ford F-350 Super Duty; 1999–2001 Ford F-450 Super Duty; 1999–2001 Ford F-550 Super Duty; 2000–2001 Ford Excursion. OEM part number F81B-14B205-EP.

Years Makes Models
1999–2001 Ford F-250 Super Duty
1999–2001 Ford F-350 Super Duty
1999–2001 Ford F-450 Super Duty
1999–2001 Ford F-550 Super Duty
2000–2001 Ford Excursion

Please note: F-250 Super Duty: 4x4 or 4x2, Power Windows/Locks, Keyless Entry F-350 Super Duty: 4x4 or 4x2, Power Windows/Locks, Keyless Entry F-450/F-550 Super Duty: Cab & Chassis models with power equipment Excursion: With power convenience & keyless entry

Is this your problem?

A quick diagnostic from the shop — see the symptoms before you buy, so you order the right part once.

Read the full transcript
Symptoms of a bad gem module on your late 90s to early 2004 truck. If you're experiencing any of the following symptoms on your general electronic module, the generic electronic module on your vehicle's most likely fried. Number one, ghost accessories. Your windshield wipers turn on by themselves. Your radio stays on after you turn the vehicle off and pull your key out. Number two, 4x4 failure. You flip the switch, nothing happens, or you just hear a rapid clicking sound deep in the dashboard. battery drain. A shorted gem will keep your network awake and will drain a brand new battery overnight. Nine out of ten times this is caused by leaking windshield. The water actually drips down onto your gem module. So use the Fitment tool on my website, drop your make model, gear in the comments, and I'll help you diagnose the issue and we'll get you set up with a replacement gem.

Specifications

Part Identification

OEM Part Number
F81B-14B205-EP
Brand
Ford
Also Replaces
F81B-14B205-EA, F81B-14B205-EB, F81B-14B205-EC, F81B-14B205-ED, F81B-14B205-EE, F81B-14B205-EF, F81B-14B205-EG, F81B-14B205-EH, F81B-14B205-EI, F81B-14B205-EJ, F81B-14B205-EM, F81B-14B205-EN, F81B-14B205-EO
Also searched as
F81B14B205EP
Also Known As
Generic Electronic Module, Ford GEM, Multifunction Module, Multi-Function Module

Condition & Testing

Condition
Used

Specifications

Material
Plastic
Placement
  • Front
  • Driver Side
What's Included
  • Pigtail
Dimensions
6.0" H × 10.0" L × 8.0" W · 32.0 oz

Frequently asked questions

Will this Generic Electronic Module (GEM) fit my 1999-2001 Ford F-250 Super Duty?
Yes — this is a direct-fit OEM replacement for the 1999-2001 Ford F-250 Super Duty and 1999-2001 Ford F-350 Super Duty and 1999-2001 Ford F-450 Super Duty and 1999-2001 Ford F-550 Super Duty and 2000-2001 Ford Excursion. Message us your VIN if you want us to double-check compatibility before you buy.
Is this part tested?
Yes. Every part is inspected and tested for functionality where applicable before listing. Used condition with a 30-day money-back guarantee.
Is this OEM or aftermarket?
100% OEM. Never aftermarket. We only sell genuine factory parts.
What is the OEM part number?
The OEM part number is F81B-14B205-EP. Interchange/alternate numbers: F81B-14B205-EA, F81B-14B205-EB, F81B-14B205-EC, F81B-14B205-ED, F81B-14B205-EE, F81B-14B205-EF, F81B-14B205-EG, F81B-14B205-EH, F81B-14B205-EI, F81B-14B205-EJ, F81B-14B205-EM, F81B-14B205-EN, F81B-14B205-EO.
Can you verify fitment before I buy?
Absolutely — message us your VIN and we'll confirm this part fits your vehicle before you purchase.
What is your return policy?
30-day money-back guarantee on every order. Return shipping is free in the US and US territories. Buyers in Canada and the EU pay their own return shipping.
What is this Generic Electronic Module (GEM) also called?
This Generic Electronic Module (GEM) is also known as: Generic Electronic Module, Ford GEM, Multifunction Module, Multi-Function Module. These are different names for the same part.
What other part numbers does this Generic Electronic Module (GEM) fit?
This Generic Electronic Module (GEM) is interchangeable with the following OEM part numbers: F81B-14B205-EA, F81B-14B205-EB, F81B-14B205-EC, F81B-14B205-ED, F81B-14B205-EE, F81B-14B205-EF, F81B-14B205-EG, F81B-14B205-EH, F81B-14B205-EI, F81B-14B205-EJ, F81B-14B205-EM, F81B-14B205-EN, F81B-14B205-EO. The primary OEM part number is F81B-14B205-EP.