Description
The NGK 3346 BR7EF V-Power Spark Plug is designed to deliver improved ignition performance over conventional nickel plugs. Featuring NGK’s signature V-groove center electrode, this plug enhances spark exposure to the air-fuel mixture, resulting in quicker starts, smoother idle, and more efficient combustion.
Built for OE-style applications, the BR7EF includes a solid copper core for superior heat dissipation and consistent performance across a wide temperature range. NGK’s high-grade alumina silicate ceramic insulator ensures excellent dielectric strength, while trivalent metal plating helps prevent corrosion and seizing for easier installation and removal.
This plug is ideal for vehicles originally equipped with standard nickel spark plugs and is not recommended for applications requiring platinum or iridium plugs.
Features:
- V-groove nickel center electrode for improved ignitability
- Faster starts and smoother idle
- OE or equivalent design for consistent performance
- Solid copper core for efficient heat dissipation
- High-grade ceramic insulator for durability and dielectric strength
- Cold-rolled threads help prevent cross-threading
- Trivalent metal plating resists corrosion and seizing
- Designed for standard nickel plug replacement applications
Specifications:
General
- Part Number: BR7EF
- Service Number: BR7EF
- Stock Number: 3346
- Brand: NGK
- Grade Type: Standard Replacement
- Metallurgy: Copper
- Resistor Type: Yes
- Resistance: 5000 Ohms
Shell
- Thread Size: M14 - 1.25
- Seat Type: Tapered
- Reach: 17.5 mm
- Hex Size: 5/8" (16 mm)
- Electrical Terminal Type: Non-Removable Nut
- Thread Type Standard: Metric
- Insulator Height: 52.5 mm
- Washer Included: No
Center Electrode
- Core Material: Copper
- Tip Material: Nickel
- Design: Standard (V-Groove)
- Projection: Non-Projected
- Insulator Tip Projection: 0.04 in (1.0 mm)
Ground Electrode
- Core Material: Nickel
- Tip Material: Nickel
- Tip Design: Standard
- Ground Configuration: J-Gap
- Quantity: 1
Additional Specs
- Pre-Gap Size: 0.7 mm
- Manufacturer Heat Range: 7
- Insulator Material: Ceramic
- Skirt: No
Fitment
Jaguar
- XJ12 V12 5.3L (1991–1992)
- XJS V12 5.3L (1991–1992)
Verify year, make, model, and engine before ordering.
