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Modular 3-Valve Spark Plug Fits: 2008.5-10 3V Heads (12mm thread)
InfoVehicle Info Needed
FORD PERFORMANCEPART NUMBER: 397-M124053V12MM

Modular 3-Valve Spark Plug Fits: 2008.5-10 3V Heads (12mm thread)

$10799
ShippingShips on Sep 11, 2026
Lowest PriceLowest Price Guarantee

    Modular 3-Valve Spark Plug
    Fits:
  • 2008.5-10 3V Heads (12mm thread)
  • 8/pkg


  • 2008 engines with late style 12 mm spark plugs can be identified by coil engineering number 8L3E
  • One heat range colder than the stock Mustang GT and 5.4L-3V truck engine spark plugs

    Designed for use in engines with higher-than-stock cylinder combustion pressures, these Ford Racing modular 3-valve zero degree spark plugs are prefect for your Ford. Their unique design is proprietary to Ford 3-valve engines and they are only available from Ford Racing. The Ford Racing modular 3-valve zero degree spark plugs are one heat range colder than the OEM Ford Mustang GT, and two heat ranges colder that the stock 5.4L truck engines. Keep your engine firing on all eight cylinders with a set of these Ford Racing modular 3-valve zero degree spark plugs.

  • For Use In Engines w/Higher Than Stock Cyl. Combustion Pressures
  • One Heat Range Colder Than Stock
  • Sold In Engines Sets of 8
Part TypeSpark Plug
BrandFORD PERFORMANCE
Package Height2.2
Package Width4.5
Package Length7.9
Weight0.87 PG
Part CategoryPerformance Parts
Electrode Tip MaterialCopper
Insulator TypeProjected
Ground Strap QuantityOne
Wrench Diameter (In.)5/8
QuantitySold as a set of 8
Spark Plug Thread Size (Mm)12
Shorty Spark PlugNo
Spark Plug Seat StyleTapered
Spark Plug Reach (Mm)26.5
Electrode Core MaterialCopper
Part FitmentUniversal
ResistorYes
Vendor Part NumberM-12405-3V12MM
Package Qty1
Package TypeEA
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