1999 Ford Explorer & Mercury Mountaineer 4.0l ECU ECM Xl2f-12a650-mb OEM

Genuine Ford engine control module (ECU/ECM/PCM) removed from a 1999 4.0L V6 vehicle. This is an original metal-cased Ford unit with main ID XL2F-12A650-MB on the label. It is the firewall-mounted ECU used on certain 4.0L SOHC automatic models.

This module should match XL2F-12A650-MB on your original computer and is part of a family that cross-references with XL2F-12A650-MA/MC/MD/ME and XL2Z-12A650-MB according to Standard Motor EM10356 interchange data. Always match the Ford engineering number on your original unit before ordering.

Most of these computers will need a VIN/immobilizer reprogram or parameter reset after installation so plan for programming by a dealer or qualified shop, as noted by multiple rebuilders and sellers for this family of modules.

OEM Part Details

• Manufacturer: Ford

• Main ID / Engineering #: XL2F-12A650-MB

• Type: Engine Control Unit (ECU / ECM / PCM)

• Engine: 4.0L V6 (245 cu in) SOHC gasoline

• Transmission: Automatic

• Mounting: Firewall-mounted module

• Housing: Metal case, 1 main multi-pin connector

Vehicle Compatibility

Fitment verified using OEM-style interchange data and parts catalogs for ID codes XL2F-MA/MB.

Direct Fit When Part Number Matches:

• 1999 Ford Explorer - 4.0L V6 SOHC gasoline, automatic transmission, firewall-mounted ECU, ID XL2F-MA or XL2F-MB

• 1999 Mercury Mountaineer - 4.0L V6 SOHC gasoline, automatic transmission, RH engine-firewall ECU, ID XL2F-MA or XL2F-MB

This module is intended only for 1999 model year vehicles equipped as above. It does not interchange with the 4.0L OHV or 5.0L V8 ECUs and does not fit 2000-2001 Explorer/Mountaineer applications which use different ID codes.

Buyer responsibility: Always confirm:

• Your original ECU label shows XL2F-12A650-MB or an interchange ID known to cross with it.

• Your vehicle is a 1999 Explorer or 1999 Mountaineer with 4.0L SOHC and automatic transmission.

Compatibility List

Use this block in the eBay compatibility section (you can condense if needed):

• 1999 Ford Explorer 4.0L V6 SOHC - Automatic - Electronic Control Module; firewall-mounted; ID XL2F-MA/MB

• 1999 Mercury Mountaineer 4.0L V6 SOHC - Automatic - Electronic Control Module; RH engine firewall; ID XL2F-MA/MB

Shipping

Free standard shipping within the continental US. Unit will be packed with padding to protect the case and connector, and shipped in a sturdy box.

Returns & Policy

30-Day Returns: Accepted if the item is returned in the same condition as shipped and includes all original hardware or accessories.

Identification Mark: Each part is discreetly marked with a UV or tamper-proof identifier. The mark must remain intact and match the original item for a refund.

Buyer Responsibility: It is the buyer's responsibility to verify compatibility (part number and vehicle fitment) before purchase and before installation.

Professional Installation: Strongly recommended to ensure proper operation and to handle any required programming or relearn procedures.

OEM Verification: All parts listed are OEM unless otherwise stated and have been verified for compatibility to the best of our ability using OEM-style catalogs and interchange data.