Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
Replacement and OEM Parts for 2003 Mercury Grand Marquis Ignition, Distributors & ECM

2003 Mercury Grand Marquis Ignition, Distributors & ECM

My Vehicle Change Vehicle
2003 Mercury Grand Marquis
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Engine & Drivetrain

27 products about 2003 Mercury Grand Marquis Ignition, Distributors & ECM found

Show Item:
  • 30
  • 60
  • 90
Sort by:
Recommended
Filter
Sort
View by
  • OEM (Genuine) 2003 Mercury Grand Marquis Coil

    PartNumber: 3W7Z-12029-AA
    OEM 2003 Mercury Grand Marquis Coil - 3W7Z-12029-AA
    Product Specifications
    • Notes: Grand Marquis
    • Other Names: Coil, Ignition Coil
    • Item Dimensions: 8.5 x 8.0 x 7.7 inches
    • Item Weight: 0.90 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 1L2Z-12029-AA, DG-540, 8W7Z-12029-A
    • Part Description: 2003 Mercury Grand Marquis Coil
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
    $50.37 MSRP: $83.27
    You Save: $32.90 (40%)
  • Denso Direct Ignition Coil Boot Kit for 2003 Mercury Grand Marquis - 671-8110

    Denso® Direct Ignition Coil Boot Kit for 2003 Mercury Grand Marquis

    PartNumber: 671-8110
    Product Specifications
    • Notes: OE Replacement Part / Complete COP Boot Set - 8
    • Boot Color: Black
    • Boot Material: Silicone
    • Length: 111.50
    • Terminal Gender: Male Female
    • Terminal Quantity: 1
    • UPC: 042511089884
    • Part Description: 2003 Mercury Grand Marquis Direct Ignition Coil Boot Kit
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
    $29.43
  • Dorman Ignition Lock Cylinder for 2003 Mercury Grand Marquis - 924-724

    Dorman® Ignition Lock Cylinder for 2003 Mercury Grand Marquis

    PartNumber: 924-724
    Product Specifications
    • Notes: wo/Transponder Key; wo/Programming Dongle
    • Color / Finish: Black
    • Finish: Black
    • Housing Material: Metal
    • Internet Product Code (IPC): D02161E4E2A
    • Item has MSDS?: N
    • Key Programmable: No
    • Key Quantity: 2
    • Keys Included: Yes
    • Lock Material: Metal
    • MFG Brand Name: Dorman OE Solutions
    • MFG Model # (Series): 924-724
    • MFG Name: Dorman Products
    • Mounting Hardware Included: No
    • Package Contents: 1 Lock Cylinder; 2 Keys; 1 Instruction Sheet; Lock Cylinder, Tumblers, Springs, Keys, Instruction Sheet
    • Position Designations: Not Applicable
    • Supplier Company Name: Dorman Products
    • UPC: 019495354062
    • Wiring Harness Included: No
    • Part Description: 2003 Mercury Grand Marquis Ignition Lock Cylinder
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
    $31.54
  • Delphi Ignition Coil for 2003 Mercury Grand Marquis - GN10164

    Delphi® Ignition Coil for 2003 Mercury Grand Marquis

    PartNumber: GN10164
    Product Specifications
    • Coil Type: Plug Top Coil (PTC)
    • Interface Description: 2 Pin Male Sealed Connector
    • Package Contents: Ignition Coil, Instruction Sheet
    • Terminal Gender: Male
    • Terminal Quantity: 2
    • Terminal Type: Blade
    • UPC: 689604196465
    • Part Description: 2003 Mercury Grand Marquis Ignition Coil
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
    $29.40
  • OEM (Genuine) 2003 Mercury Grand Marquis Ignition Immobilizer Module

    PartNumber: 3W1Z-15607-AA
    OEM 2003 Mercury Grand Marquis Ignition Immobilizer Module - 3W1Z-15607-AA
    Product Specifications
    • Notes: 2003-04, Anti Theft
    • Other Names: Ignition Immobilizer Module
    • Item Dimensions: 5.1 x 4.6 x 2.9 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 3R3Z-15607-AA
    • Part Description: 2003 Mercury Grand Marquis Ignition Immobilizer Module
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
    $44.27 MSRP: $55.00
    You Save: $10.73 (20%)
  • Dorman Ignition Switch for 2003 Mercury Grand Marquis - 924-868

    Dorman® Ignition Switch for 2003 Mercury Grand Marquis

    PartNumber: 924-868
    Product Specifications
    • Color/Finish: Tan
    • Connector/Terminal Configuration: 15-Pin Male
    • Key Programmable: No
    • Keys Included: No
    • Mounting Hardware Included: Yes
    • Mounting Location: Steering Column
    • Mounting Type: Bolt-on
    • Package Contents: 1 Switch, 2 Bolts, 1 Connector Shield, 1 Instruction Sheet
    • UPC: 885484702806
    • Part Description: 2003 Mercury Grand Marquis Ignition Switch
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
    $15.30
  • Spectra Premium Ignition Coil Set for 2003 Mercury Grand Marquis - C500M8

    Spectra Premium® Ignition Coil Set for 2003 Mercury Grand Marquis

    PartNumber: C500M8
    Product Specifications
    • Notes: Coil On Plug; Multipack: 8 Units
    • UPC: 627785024115
    • Part Description: 2003 Mercury Grand Marquis Ignition Coil Set
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
    $87.44
  • Denso Ignition Coil for 2003 Mercury Grand Marquis - 673-6000

    Denso® Ignition Coil for 2003 Mercury Grand Marquis

    PartNumber: 673-6000
    Product Specifications
    • Notes: OE Part
    • Color: Black
    • UPC: 042511179264
    • Voltage: 12
    • Part Description: 2003 Mercury Grand Marquis Ignition Coil
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
    $27.84
  • OEM (Genuine) 2003 Mercury Grand Marquis Warning Switch

    PartNumber: 1L3Z-11582-A
    OEM 2003 Mercury Grand Marquis Warning Switch - 1L3Z-11582-A
    Product Specifications
    • Notes: All Models; All; 2003-04; Grand Marquis
    • Item Dimensions: 8.7 x 7.9 x 7.6 inches
    • Item Weight: 0.80 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 1L3Z-11582-AB
    • Part Description: 2003 Mercury Grand Marquis Warning Switch
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
    $53.34 MSRP: $88.18
    You Save: $34.84 (40%)
  • Walker Products Ignition Coil for 2003 Mercury Grand Marquis - 921-2005

    Walker Products® Ignition Coil for 2003 Mercury Grand Marquis

    PartNumber: 921-2005
    Product Specifications
    • Connector Gender: Female
    • Ignition Type: Distributorless
    • Mounting Bracket Included: Yes
    • Oil Filled: No
    • Requires External Resistor: No
    • Terminal Gender: Male
    • Terminal Quantity: 2
    • Terminal Type: Spade
    • UPC: 724620055140
    • Voltage: 12
    • Part Description: 2003 Mercury Grand Marquis Ignition Coil
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
    $12.67
  • Spectra Premium Ignition Coil for 2003 Mercury Grand Marquis - C-500

    Spectra Premium® Ignition Coil for 2003 Mercury Grand Marquis

    PartNumber: C-500
    Product Specifications
    • Notes: Coil On Plug; Single Unit
    • UPC: 874183002737
    • Part Description: 2003 Mercury Grand Marquis Ignition Coil
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
    $12.41
  • Dorman Ignition Lock Cylinder for 2003 Mercury Grand Marquis - 989-018

    Dorman® Ignition Lock Cylinder for 2003 Mercury Grand Marquis

    PartNumber: 989-018
    Product Specifications
    • Notes: Keyed wo/Transponder Key
    • Finish: Black
    • Housing Material: Metal
    • Key Programmable: No
    • Key Quantity: 2
    • Keys Included: Yes
    • Lock Material: Metal
    • Package Contents: 1 Lock Cylinder; 2 Keys
    • UPC: 885484689374
    • Wiring Harness Included: No
    • Part Description: 2003 Mercury Grand Marquis Ignition Lock Cylinder
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
    $61.12
  • OEM (Genuine) 2003 Mercury Grand Marquis Knock Sensor

    PartNumber: XL3Z-12A699-AA
    OEM 2003 Mercury Grand Marquis Knock Sensor - XL3Z-12A699-AA
    Product Specifications
    • Other Names: Knock Sensor
    • Item Dimensions: 6.3 x 2.5 x 2.5 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 Mercury Grand Marquis Knock Sensor
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
    $35.76 MSRP: $56.55
    You Save: $20.79 (37%)
  • Cardone Reman Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis - 78-8577F

    Cardone Reman® Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis

    PartNumber: 78-8577F
    Product Specifications
    • Notes: All Calibrations with Module ID MPC-175;PATS Module Requires Programming after ECM Install.;Correct VIN and OE Number Required When Ordering;Vehicle specific Flash programming req'd ON or OFF the vehicle.Accurate VIN & mileage are req'd. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability & starting issues.
    • UPC: 082617716178
    • Part Description: 2003 Mercury Grand Marquis Remanufactured Engine Control Computer
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
    $187.14
  • Cardone Reman Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis - 78-8579F

    Cardone Reman® Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis

    PartNumber: 78-8579F
    Product Specifications
    • Notes: Correct VIN and OE Number Required When Ordering;All Calibrations with Module ID MPC-177;Vehicle specific Flash programming Reqd ON or OFF the vehicle.Accurate VIN & mileage are req'd
    • UPC: 082617716215
    • Part Description: 2003 Mercury Grand Marquis Remanufactured Engine Control Computer
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • Cardone Reman Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis - 78-8585F

    Cardone Reman® Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis

    PartNumber: 78-8585F
    Product Specifications
    • Notes: PATS Module Requires Programming after ECM Install.;All Calibrations with Module ID MPC-195;Correct VIN and OE Number Required When Ordering;Vehicle specific Flash programming Reqd ON or OFF the vehicle.Accurate VIN & mileage are req'd
    • UPC: 082617716345
    • Part Description: 2003 Mercury Grand Marquis Remanufactured Engine Control Computer
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • Cardone Reman Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis - 78-8587F

    Cardone Reman® Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis

    PartNumber: 78-8587F
    Product Specifications
    • Notes: All Calibrations with Module ID MPC-197;Correct VIN and OE Number Required When Ordering;Vehicle specific Flash programming Reqd ON or OFF the vehicle.Accurate VIN & mileage are req'd
    • UPC: 082617716369
    • Part Description: 2003 Mercury Grand Marquis Remanufactured Engine Control Computer
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • Cardone Reman Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis - 78-8580F

    Cardone Reman® Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis

    PartNumber: 78-8580F
    Product Specifications
    • Notes: Correct VIN and OE Number Required When Ordering;PATS Module Requires Programming after ECM Install.;All Calibrations with Module ID MPC-185;Vehicle specific Flash programming Reqd ON or OFF the vehicle.Accurate VIN & mileage are req'd
    • UPC: 082617716222
    • Part Description: 2003 Mercury Grand Marquis Remanufactured Engine Control Computer
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • Original Engine Management Direct Ignition Coil Boot for 2003 Mercury Grand Marquis - ICB1

    Original Engine Management® Direct Ignition Coil Boot for 2003 Mercury Grand Marquis

    PartNumber: ICB1
    Product Specifications
    • Notes: Std Duty
    • UPC: 841266057533
    • Part Description: 2003 Mercury Grand Marquis Direct Ignition Coil Boot
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
  • Original Engine Management Ignition Coil for 2003 Mercury Grand Marquis - 50006

    Original Engine Management® Ignition Coil for 2003 Mercury Grand Marquis

    PartNumber: 50006
    Product Specifications
    • Coil Included: Yes
    • Coil Type: Electronic
    • Color/Finish: Black, Blue letters
    • Connector Gender: Female
    • Connector Quantity: 1
    • Connector Shape: Rectangular, Square
    • Connector Type: Plug In
    • Grease Pack: No
    • Hardware Included: No
    • Ignition Type: Distributorless
    • Instructions Included: No
    • Mount Type: Bolt On
    • Mounting Hardware Included: No
    • Oil Filled: No
    • Terminal Gender: Male
    • Terminal Quantity: 2
    • Terminal Type: Blade
    • UPC: 025623981420
    • Voltage [V]: 12
    • Part Description: 2003 Mercury Grand Marquis Ignition Coil
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | 8 Cyl 4.6L
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • Dorman Ignition Lock Key With Transponder for 2003 Mercury Grand Marquis - 101-311

    Dorman® Ignition Lock Key With Transponder for 2003 Mercury Grand Marquis

    PartNumber: 101-311
    Product Specifications
    • Notes: Transponder Key
    • Battery Required: No
    • Blade Material: Brass
    • Cloneable Key: Clone
    • Key Blade Type: Edge Cut
    • Key Type: Transponder
    • Package Contents: 1 Ignition Lock Key
    • Pre-Cut Key: Yes
    • UPC: 019495953944
    • Part Description: 2003 Mercury Grand Marquis Ignition Lock Key With Transponder
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • OEM (Genuine) 2003 Mercury Grand Marquis Ignition Switch

    PartNumber: F4DZ-11572-B
    OEM 2003 Mercury Grand Marquis Ignition Switch - F4DZ-11572-B
    Product Specifications
    • Notes: 2003-04
    • Other Names: Ignition Switch
    • Item Dimensions: 4.3 x 4.2 x 3.3 inches
    • Item Weight: 0.80 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 Mercury Grand Marquis Ignition Switch
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
  • Original Engine Management Ignition Lock Cylinder for 2003 Mercury Grand Marquis - ILC191

    Original Engine Management® Ignition Lock Cylinder for 2003 Mercury Grand Marquis

    PartNumber: ILC191
    Product Specifications
    • Notes: w/o Transponder Key; Must be coded
    • Coding: Coded
    • Key Quantity: 2
    • Keys Included: Yes
    • Mounting Bracket(s) Included: No
    • O.E.M. Replacement: Yes
    • UPC: 841266096952
    • Part Description: 2003 Mercury Grand Marquis Ignition Lock Cylinder
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • OEM (Genuine) 2003 Mercury Grand Marquis ECM

    PartNumber: 3U7Z-12A650-AMB
    OEM 2003 Mercury Grand Marquis ECM - 3U7Z-12A650-AMB
    Product Specifications
    • Notes: All Models; DOHC
    • Item Dimensions: 10.4 x 6.6 x 2.3 inches
    • Item Weight: 2.20 Pounds
    • Part Description: 2003 Mercury Grand Marquis ECM
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
  • Cardone Reman Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis - 78-8582F

    Cardone Reman® Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis

    PartNumber: 78-8582F
    Product Specifications
    • Notes: Correct VIN and OE Number Required When Ordering;All Calibrations with Module ID MPC-187;Vehicle specific Flash programming Reqd ON or OFF the vehicle.Accurate VIN & mileage are req'd
    • UPC: 082617716246
    • Part Description: 2003 Mercury Grand Marquis Remanufactured Engine Control Computer
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines
  • OEM (Genuine) 2003 Mercury Grand Marquis PCM

    PartNumber: 3W7Z-12A650-BEB
    OEM 2003 Mercury Grand Marquis PCM - 3W7Z-12A650-BEB
    Product Specifications
    • Notes: All Models; Sohc
    • Other Names: ECM
    • Item Dimensions: 10.5 x 6.8 x 2.4 inches
    • Item Weight: 2.10 Pounds
    • Part Description: 2003 Mercury Grand Marquis PCM
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
  • Cardone Reman Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis - 78-8584F

    Cardone Reman® Remanufactured Engine Control Computer for 2003 Mercury Grand Marquis

    PartNumber: 78-8584F
    Product Specifications
    • Notes: All Calibrations with Module ID MPC-189;Correct VIN and OE Number Required When Ordering;Vehicle specific Flash programming Reqd ON or OFF the vehicle.Accurate VIN & mileage are req'd
    • UPC: 082617716338
    • Part Description: 2003 Mercury Grand Marquis Remanufactured Engine Control Computer
    More Info
    Vehicle Fitment
    • 2003 Mercury Grand Marquis | All Trims | All Engines