
NGK SPARK PLUGSPART NUMBER: 739-R7448A-9
Racing Resistor Spark Plug 14mm x 25mm Reach
$1801
Medium-Cold Heat Range
Racing Spark PlugResistor Hex Size: 5/8 (.625) in. Thread Reach: 25 mm Thread Diameter: 14mm Seat: Tapered Heat Range: 9 Tip: Nickle Trapezoid Gap: Adjustable Gap preset to 0.030 in. 1/pkg
NGK R7448A-9 Features:
- Engineered to handle several drive-cycles & the extreme pressures associated with high horsepower engines
- Specially designed tip configuration improves throttle response throughout the entire rpm range
- Corrugated ribs help prevent flashover, a condition that causes the cap seal to melt onto the spark plug insulator
- Pure alumina silicate ceramic insulator ensures superior strength and heat transfer
- The copper core allows for better heat removal from the plug
- Triple seals mean no leakage
Torque Specs:
- Cast Iron Cylinder Heads: 10.800 - 18 lb. ft.
- Aluminum Cylinder Heads: 7.200 - 14.5 lb. ft.
Stock Number: 96969
Part TypeSpark Plug
BrandNGK SPARK PLUGS
Package Height0.83
Package Width0.94
Package Length3.7
Weight0.11 PG
Part CategoryPerformance Parts
Reach0.98
Thread Diameter0.55 in (14 mm)
Ground Electrode Quantity1
Center Electrode DesignStandard / Regular
Thread Size14mm X 1.25
Shorty Spark PlugNo
Seat TypeTapered
Center Electrode Tip MaterialNickel
Insulator MaterialCeramic
Part FitmentUniversal
ResistorYes
Hex Size0.625 in (15.875 mm)
Vendor Part NumberR7448A-9
Package Qty1
Package TypeEA
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