Spark Plug BR7EF 3346 V-Power, Pre-Set Gap: 0.028" 1-PLUG

NGK BR7EF 3346 V-Power Spark Plug – Pre-Gapped 0.028" (Single Plug)

NGK BR7EF (stock #3346) is a V-Power copper spark plug in a colder heat range, ideal for performance, boosted, or high-compression engines where tuners call for a 7 heat range. With a tapered seat, 5/8" hex, and J-gap nickel electrode, it’s a popular choice for LS and other performance V8 builds needing a reliable, colder plug.

• Brand: NGK

• Series: V-Power

• Part Number: BR7EF

• Stock Number: 3346

• Product Type: Spark plug – sold individually (1 plug)

Electrode & Core

• Center Electrode Core Material: Copper

• Center Electrode Design: Standard

• Center Electrode Tip Material: Nickel

• Center Electrode Projection: Mid projection

• Center Electrode Insulator Tip Projection: 0.16" (4.0 mm)

• Ground Configuration: J-gap

• Ground Electrode Quantity: 1

• Ground Electrode Core Material: Nickel

• Ground Electrode Tip Material: Nickel

• Ground Electrode Tip Design: Standard

Size & Fit

• Thread Size: M14 x 1.25 (metric)

• Reach: 0.689" (17.5 mm)

• Seat Type: Tapered

• Hex Size: 5/8" (16 mm)

• Insulator Height: 2.07" (52.5 mm)

• Short Style Spark Plug: No

• Skirt: No (0.0" skirt length)

Electrical & Heat Range

• Resistor Type: Yes

• Resistance: ~5,000 Ω

• Manufacturer Heat Range: 7 (colder performance range)

• Electrical Terminal Type: Removable nut

Gap & Setup

• Pre-Set Gap: 0.028" (0.7 mm) – always verify and adjust to your tuner/engine spec

Materials

• Insulator Material: Ceramic

• Material Grade: Nickel/Copper

Misc.

• Service Number: TR5 (line family reference)

• Thread Type Standard: Metric

• Washer Included: No (taper-seat plug does not use a separate washer)

Use this as a single replacement or order 8 for a full V8 set, especially on boosted or higher-output engines where a colder NGK 7 heat range plug is recommended.