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Vehicle Info NeededNGK SPARK PLUGSPART NUMBER: 739-R5671A-9
R5671A-9 Racing Non-Resistor Spark Plug 14mm x 3/4 in. Reach
$767
Ships on Sep 23, 2026
Lowest Price GuaranteeMedium-Cold Heat Range
- Racing Non-Resistor Spark Plug
- 14mm x 3/4 in. Reach
- 5/8 in. Hex
- Gasket seat
- V-groove center electrode
What's firing your engine? NGK racing spark plugs are built to withstand the severe mechanical and thermal shock associated with high-revving, high-compression engines. NGK racing plugs feature special electrode materials—precious metals like platinum, iridium, and ruthenium—for greater durability and low voltage requirements. Fine-wire center and ground electrodes provide better sparking and enhanced ignitability. And, the unique arrangement of insulator noses improves throttle response! Whether you're a weekend warrior or an expert racer, rocket your way to victory with racing spark plugs from NGK—the people who spark winners!
Race Proven Spark Plugs
For many years, NGK Spark Plugs have been firing race engines to victory around the world. With racing vehicles being pushed to the edge every spark plug is designed to withstand severe mechanical and thermal shock. Backed by years of street and strip experience you can be confident these spark plugs will get you where you need to go.
Part TypeSpark Plug
Product LineNGK Racing Spark Plugs
BrandNGK SPARK PLUGS
Package Height0.8
Package Width0.9
Package Length3.4
Weight0.1 PG
Part CategoryPerformance Parts
Part FitmentUniversal
Vendor Part NumberR5671A-9
Package Qty1
Package TypeEA
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