NGK SPARK PLUGS D7EA 7912 Spark Plug 10 Pack

OVERVIEW

The NGK D7EA 7912 spark plug delivers precise ignition timing and reliable combustion for classic motorcycle platforms. Constructed with a durable copper ground strap and an advanced ceramic insulator, this one-size-one-application component maintains consistent firing performance under varying engine loads. The package contains ten individual plugs ready for direct factory replacement.

ENGINEERING & PERFORMANCE

Advanced thermal management is built into the plug through a deep-seated copper core and a high alumina ceramic insulator that efficiently dissipates exhaust heat. The engineered wide operating heat range eliminates fouling during low-speed riding while preventing preignition events at sustained highway speeds. A reinforced nickel alloy tip resists erosion from repeated arc strikes, ensuring stable voltage transfer and quick cranking startup across diverse climates.

KEY FEATURES

• NGK manufactured spark plug optimized for vintage and modern two-stroke and four-stroke engines
• High alumina ceramic insulator provides superior heat dissipation and electrical isolation
• Wide operating heat range prevents cold-fouling and high-temperature preignition
• Deep-seated copper ground strap expands effective thermal coverage
• Nickel alloy center tip extends service intervals and maintains electrode geometry
• Direct OEM-style replacement with standard thread reach and gasket sealing
• 10-pack configuration supports complete engine maintenance or fleet preparation

TECHNICAL SPECIFICATIONS

• Brand: NGK
• Part Name: D7EA 7912 Spark Plug (10-Pack)
• Component Type: Spark Plug
• Material Construction: High alumina ceramic insulator, copper core, nickel alloy tip
• Supported Years: 1974–2002
• Compatible Trims: BMW K75/K100/K1100 series motorcycles, Suzuki LT quad series, Honda CB series, Yamaha trike and motocross models

FITMENT

• Honda CB550F Super Sport (1975–1977)
• Honda CB550K (1974–1978)
• Kawasaki KLT110 (1984–1985)
• Suzuki ALT125 (1983–1986)
• Suzuki ALT185 (1985)
• Suzuki LT125 (1985–1987)
• Suzuki LT160E (1989)
• Suzuki LT185 (1984–1987)
• Suzuki LT-F230 (1987)
• Suzuki LT-F250 QuadRunner (1988–1993, 1997–2001)
• Suzuki LT-F300F KingQuad 4x4 (1999–2002)
• Suzuki LT230E QuadRunner (1987–1993)
• Suzuki LT230GE (1985–1986)
• Suzuki LT230S QuadSport (1985–1988)
• Yamaha SR185 (1981–1982)
• Yamaha TT600 (1983–1984)
• Yamaha XT550 (1982–1983)
• Yamaha YTM200 Tri-Moto (1983–1985)
• BMW K75 (1990–1994)
• BMW K75C (1986–1988)
• BMW K75 RTA (1991–1995)
• BMW K75 SA (1994–1995)
• BMW K75RT (1990–1992)
• BMW K75S (1987–1992)
• BMW K100RS (1984–1988)
• BMW K100LT ABS (1992)
• BMW K1100 LT (1992)
• BMW K1100 RSA (1988–1989)

WHY RIDERS CHOOSE THIS

Maintenance crews and weekend riders select the NGK D7EA for its predictable throttle response and consistent firing across decades of air-cooled engineering. The copper-core ground strap and precision-baked ceramic insulator work together to regulate combustion chamber temperatures, which stops deposit buildup and keeps spark gaps accurate. Because the plug accommodates a wide thermal window, it handles prolonged idling, steep climbs, and heavy payloads without leaning out or overheating. This straightforward design, combined with broad cross-brand compatibility, minimizes troubleshooting and keeps machines rolling season after season.