NGK 7390 Spark Plug

NGK V-Power Spark Plug 7390 Overview

NGK V-Power Spark Plug 7390 is a direct-fit ignition component for select Nissan Quest and Mercury Villager applications. Built around a copper core center electrode, nickel tip materials, and a standard ground electrode design, it supports consistent spark delivery for everyday driving and OE-style service intervals.

The V-Power line focuses on practical ignition performance with a pre-gap of .036, a 5 k? resistance value, and a flat seat design. Part number 7390 is also identified as BKR5EY, making it easier to match the correct spark plug for service work on the 1993-1998 Nissan Quest and 1993-1998 Mercury Villager.

Key Features

• NGK V-Power Spark Plug line for OE-style ignition service
• Copper center electrode core material for stable conductivity
• Nickel center and ground electrode tip materials
• Standard ground configuration with one ground electrode
• Pre-gapped at .036 for specified applications
• 5/8 hex size, 14.00 mm thread diameter, .75 reach, and flat seat type
• Non-removable nut terminal for standard ignition connection
• Part number 7390 / BKR5EY

Product Details

NGK has long supplied original equipment spark plugs for domestic and import vehicles in North America, and this V-Power spark plug reflects that OE-focused approach. The copper core and nickel electrode construction are selected for dependable ignition performance, while the standard ground design and manufacturer heat range 5 help maintain the correct operating characteristics for the listed vehicles. This part cross-references Gates 7390 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent spark output
• Misfire conditions related to aged ignition components
• Reduced fuel economy from inefficient combustion
• Loss of throttle response in high-mileage tune-ups

Installation Notes

Compatible With 1993-1998 Nissan Quest and 1993-1998 Mercury Villager, N/A. Verify the specified gap before installation and confirm the thread diameter, reach, seat type, and terminal style match the engine specification. For best results, install during routine ignition service and follow the vehicle manufacturer’s torque and maintenance procedures.

Quality Assurance

NGK is a major OE spark plug supplier with extensive North American manufacturing and distribution support. Part number 7390 is built to original-equipment standards for durability and consistent operation in the listed Nissan Quest and Mercury Villager applications.