NGK 97821 Spark Plug

Overview

NGK 97821 is a standard carded spark plug built with a copper center electrode core, nickel center and ground electrode tips, and a resistor design. It uses a flat seat, 14 mm thread diameter, 0.38 reach, and a 0.028 pre-gap size for service applications that call for this specification.

Compatible with John Deere Gator CX 4x2 models from 2010-2015 with the Kawasaki OHV engine, this NGK spark plug is identified by part number 97821 and BMR6A SOLID BLYB.

Key Features

• Copper core with nickel electrode materials for consistent ignition performance.
• Resistor type with 10,000 resistance for reduced electrical noise.
• Flat seat, 14 mm thread, and 0.38 reach for specified applications.
• Standard ground electrode design with a 0.028 pre-gap size.
• NGK part number 97821, also marked BMR6A SOLID BLYB.

Detailed Description

NGK 97821 is a secondary ignition spark plug engineered to match the listed service specification. The copper core and nickel electrode construction support stable spark delivery, while the resistor design and standard ground configuration align with common OE-style ignition requirements. This part number 97821 is a direct service option for John Deere Gator CX 4x2 applications listed for 2010-2015, and the same part number is also referenced as BMR6A SOLID BLYB.

NGK’s OE supplier background and long automotive manufacturing history make this spark plug a practical choice for maintenance work where original-equipment standards matter. For John Deere Gator CX 4x2 service, confirm the heat range, reach, seat type, and gap specification before installation.

What It Is Used For

• Replacing a worn or fouled spark plug.
• Restoring consistent ignition performance.
• Addressing misfire, rough running, or hard-start conditions tied to plug wear.
• Maintaining correct spark plug specification in service intervals.
• Supporting reliable combustion in the listed engine application.

Installation Notes and Tips

Verify the engine specification, thread diameter, reach, seat type, and pre-gap before installation. Set the gap to the engine requirement if needed, and inspect the ignition system for carbon tracking, oil fouling, or damaged threads before fitting the new plug. Use the listed part number 97821 to confirm the correct service match.

Quality Assurance

NGK is a major OE supplier of spark plugs in North America and manufactures to original equipment standards. Part number 97821 reflects NGK’s standard carded spark plug line and is backed by the brand’s long-standing ignition expertise.