2003 MERCURY GRAND MARQUIS Performance Parts

    • Position: Front
    • Rotor Construction: Vented 1-Piece
    • Rotor Style: Dimpled & Slotted
    • Rotor Diameter: 12"
    • Quantity: Sold as a set

    Fitment:

    2003 MERCURY GRAND MARQUIS GS, LS, LSE / 4.6L V8 GAS

    $293.94
  1. B&M Transmission Brackets and Levers will help you to replace all of your missing or damaged shifter components. These shifter brackets are made only from quality materials and are compatible with a wide range of applications for a perfect fit.

    Fitment:

    2003 MERCURY GRAND MARQUIS GS, LS, LSE / 4.6L V8 GAS

    $102.95
  2. Key Features:
    • Silicone Coupler Hose Hump
    • Connects Two 3.5 in. OD Tubes x 4.5 in. L

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

  3. Key Features:
    • 8.8 in. Ring And Pinion Set
    • 4.10 Ratio

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $270.02
  4. Key Features:
    • 8.8 in. Ring And Pinion Set
    • 3.73 Ratio

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $278.26
  5. Key Features:
    • 8.8 in. Ring And Pinion Installation Kit
    • Fits IRS
    • Incl. All Hardware
    • Excluding Pinion Gear And Carrier Bearings
    • Axle Shaft Bearings And Seals

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

  6. Key Features:
    • Head Changing Kit
    • Fits 3V 4.6L Modular Engine w/Standard 90.2mm. Bore
    • Incl. Multi-Layer Steel Head Gaskets/Torque To Yield Bolts

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $155.99
    • Series: Ultimax OE Pad, RK Series Rotor
    • Position: Front
    • Pad Material: Organic
    • FMSI: D931 Front
    • Rotor Construction: Vented 1-Piece Front
    • Rotor Style: Plain
    • Rotor Diameter: 12" Front

    Fitment:

    2003 MERCURY GRAND MARQUIS GS, LS, LSE / 4.6L V8 GAS

    $240.15
  7. KYB Strut Mount Plates are specially designed to keep your strut in place on your vehicle. These products are made of high-strength steel and install to your existing OEM holes and allow the strut to pass through the center of the bearing for top mounting. Free shipping to all of USA!

    Fitment:

    2003 MERCURY GRAND MARQUIS ALL

    • Series: California
    • Material: Stainless
    • Carb Compliant: Yes
    • Converter Configuration: Universal
    • Main Piping Diameter: 2.25"
    • Body Shape: Oval
    • Inlet/Outlet Position: Center/Center
    • Inlet Diameter: 2.25"
    • Outlet Diameter: 2.25"
    • Body Length: 9"
    • Body Width: 5.5"
    • Overall Length: 13"
    • Body Material: Stainless
    • Catalytic Converter Format: Pre-Catalytic Converter And Main Catalytic Converter
    • Catalytic Converter Substrate Material: Ceramic
    • Catalytic Converter Body Material: Stainless
    • Air Tube Adapter: Not Adaptable
    • O2 Sensor Location: N/A

    Fitment:

    2003 MERCURY GRAND MARQUIS GS, LS, LSE / 4.6L V8 GAS / 2.25" / 2.25"

    $373.00
    • Series: California
    • Material: Stainless
    • Carb Compliant: Yes
    • Converter Configuration: Universal
    • Main Piping Diameter: 2"
    • Body Shape: Oval
    • Inlet/Outlet Position: Angled Offset/Center
    • Inlet Diameter: 2"
    • Outlet Diameter: 2"
    • Body Length: 7.75"
    • Body Width: 5.25"
    • Overall Length: 11.5"
    • Body Material: Stainless
    • Catalytic Converter Format: Pre-Catalytic Converter And Main Catalytic Converter
    • Catalytic Converter Substrate Material: Ceramic
    • Catalytic Converter Body Material: Stainless
    • Air Tube Adapter: Not Adaptable
    • O2 Sensor Location: N/A

    Fitment:

    2003 MERCURY GRAND MARQUIS GS, LS, LSE / 4.6L V8 GAS / 2.00" / 2.00"

    $358.00
    • Position: Rear
    • Rotor Construction: Vented 1-Piece
    • Rotor Style: Slotted
    • Rotor Diameter: 11.6"
    • Quantity: Sold as a set

    Fitment:

    2003 MERCURY GRAND MARQUIS GS, LS, LSE / 4.6L V8 GAS

    $170.57
    • Series: Heavy Metal
    • Converter Configuration: Universal
    • Main Piping Diameter: 2"
    • Inlet Diameter: 2"
    • Outlet Diameter: 2"
    • Body Length: 7.75"
    • Body Width: 5.5"
    • Overall Length: 11.5"
    • Air Tube Adapter: Not Adaptable

    Fitment:

    2003 MERCURY GRAND MARQUIS GS, LS, LSE / 4.6L V8 GAS / 2.00" / 2.00"

    $172.00
  8. Key Features:
    • Dual DIS-4 Harness
    • To DIS-4 Ignition

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $149.95
  9. Key Features:
    • DIS-4 Plus Ignition Controller
    • With 3/4 Coil Packs

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $874.20
  10. Moroso is a recognized name in the performance industry manufacturing over four thousand products including everything from oil pans and oiling systems, to ignition wire, ignition components, valve covers, fuel system equipment, air cleaners, hard-core racing tools, chassis and suspension equipment and other. All Moroso products are manufactured from the highest quality materials, and specially created by racers for racers. Free shipping to all of USA!

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8

    • Carrier Case
    • 7.5 in. 10 Bolt
    • Position: Rear
    • Standard

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $487.89
    • Carrier Case
    • 8.8 in. 10 Bolt
    • Standard
    • 31 Spline
    • 7/8 in. Cross Pin Hole
    • Position: Rear

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $218.89
    • Ring And Pinion Gear Set
    • 7.5 in. 10 Bolt
    • Rear
    • 2.73 Ratio

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $393.89
    • Ring And Pinion Gear Set
    • 7.5 in. Ring Gear
    • 4.11 Ratio
    • Independent Rear Suspension

    Fitment:

    2003 MERCURY GRAND MARQUIS 4.6L V8 GAS

    $363.89