SP549X Platinum Spark Plug for Select Ford, Lincoln, Mercury Gas Engines
InfoVehicle Info Needed
MOTORCRAFTPART NUMBER: 037-SP549X

SP549X Platinum Spark Plug for Select Ford, Lincoln, Mercury Gas Engines

$699
ShippingShips on Sep 17, 2026
Lowest PriceLowest Price Guarantee

Motorcraft Spark Plugs
  • Single Platinum
  • Platinum Spark Plug
  • Fits Select Ford, Lincoln, Mercury Gas Engines
  • 1958-1986 Ford Applications
  • 1958-1974 Mercury Applications
  • Designed to Ford Engineering Standards

    This platinum spark plug is designed to maintain engine performance and ignition reliability throughout the recommended service interval. Built to Ford engineering standards, it is matched to specific engine applications to support durability, reduced misfires, and dependable operation across a broad range of Ford, Lincoln, and Mercury vehicles.

    Motorcraft SP549X Platinum Spark Plug Features:

    • Platinum spark plug design
    • Built to Ford engineering standards
    • Designed for long service intervals
    • Supports reliable ignition performance
    • Helps reduce misfires and maintain engine efficiency
    • Designed for a broad range of Ford, Lincoln, and Mercury applications
  • Part TypeSpark Plug
    BrandMOTORCRAFT
    Package Height1.15
    Package Width1.15
    Package Length3.45
    Weight0.155 PG
    Part CategoryReplacement Parts
    Seat TypeTapered
    Spark Plug Approximate Resistor Value2,000 - 12,000
    Insulator Height60.5282
    Center Electrode Tip MaterialPlatinum
    Center Electrode DesignFinewire
    Ground Electrode Tip MaterialNickel
    Thread Size18
    Center Electrode Core MaterialCopper
    Part FitmentDirect Fit
    Hex Size20.62
    Vendor Part NumberSP549X
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

    Items You Need

    Electrician Tool Set

    JEGS

    Electrician Tool Set

    Part Number : 555-W1714
    $2799$30.99
    You Save$3.00
    Self-Powered Timing Light [Powered by (2) D-Cell Batteries]

    JEGS

    Self-Powered Timing Light [Powered by (2) D-Cell Batteries]

    Part Number : 555-W80578
    $4799$52.99
    You Save$5.00
    Spark Plug Boot Puller

    JEGS

    Spark Plug Boot Puller

    Part Number : 555-80574
    $739$7.99
    You Save$0.60
    Dielectric Grease, 1 oz. Tube

    JEGS

    Dielectric Grease, 1 oz. Tube

    Part Number : 555-28020
    $499$5.99
    You Save$1.00
    Spark Plug Wire Boot Guards, Black [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Black [Set of 8]

    Part Number : 555-40300
    $4499$49.99
    You Save$5.00
    Spark Plug Wire Boot Guards, Red [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Red [Set of 8]

    Part Number : 555-40302
    $5499$60.99
    You Save$6.00
    Spark Plug Wire Boot Guards, Blue [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Blue [Set of 8]

    Part Number : 555-40304
    $5499$60.99
    You Save$6.00
    Spark Plug Wire Boot Guards, Silver [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Silver [Set of 8]

    Part Number : 555-40310
    $4499$49.99
    You Save$5.00
    Spark Plug Wire Separators Black

    JEGS

    Spark Plug Wire Separators Black

    Part Number : 555-40320
    $2039$22.99
    You Save$2.60
    Spark Plug Wire Separator Kit Black

    JEGS

    Spark Plug Wire Separator Kit Black

    Part Number : 555-40360
    $399$4.29
    You Save$0.30
    Spark Plug Wire Loom Kit Black

    JEGS

    Spark Plug Wire Loom Kit Black

    Part Number : 555-40365
    $1379$14.99
    You Save$1.20
    High Temperature Ignition & Plug Wire Sleeves 3/8" x 25ft

    THERMO TEC

    High Temperature Ignition & Plug Wire Sleeves 3/8" x 25ft

    Part Number : 893-14040
    $6553$72.82
    You Save$7.29
    200-Piece Tool Set with Carry Case

    JEGS

    200-Piece Tool Set with Carry Case

    Part Number : 555-80453
    $7299$89.99
    You Save$17.00
    Heavy Duty Circuit Tester for 6, 12 & 24 Volt Systems

    JEGS

    Heavy Duty Circuit Tester for 6, 12 & 24 Volt Systems

    Part Number : 555-80569
    $899$9.99
    You Save$1.00
    Sure Grip Cut & Pull Wire Stripper

    JEGS

    Sure Grip Cut & Pull Wire Stripper

    Part Number : 555-80573
    $1999$21.99
    You Save$2.00
    Wire Crimping Pliers and Stripping Tool

    JEGS

    Wire Crimping Pliers and Stripping Tool

    Part Number : 555-80575
    $1399$15.99
    You Save$2.00
    Angled Flush Cutter - 5 in.

    JEGS

    Angled Flush Cutter - 5 in.

    Part Number : 555-W30763
    $1199$13.99
    You Save$2.00
    Spark Plug Socket Set, 3/8 in. Drive [SAE/Metric 5-Piece]

    JEGS

    Spark Plug Socket Set, 3/8 in. Drive [SAE/Metric 5-Piece]

    Part Number : 555-80509
    $1929$20.99
    You Save$1.70
    3/8 in. Drive 5/8 in. Extended Spark Plug Socket

    JEGS

    3/8 in. Drive 5/8 in. Extended Spark Plug Socket

    Part Number : 555-W80533
    $1499$16.99
    You Save$2.00
    Spark Plug Thread Chaser 14mm and 18mm

    JEGS

    Spark Plug Thread Chaser 14mm and 18mm

    Part Number : 555-80507
    $949$10.99
    You Save$1.50
    Spark Plug Install & Removal Tool

    JEGS

    Spark Plug Install & Removal Tool

    Part Number : 555-W80534
    $2119$22.99
    You Save$1.80
    Inline Ignition Spark Tester

    JEGS

    Inline Ignition Spark Tester

    Part Number : 555-W86554
    $499$5.99
    You Save$1.00
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning
    Your Cart

    Your shopping cart is empty!