NGK SPARK PLUGS D8EA 2120 10 pack

OVERVIEW

The NGK D8EA 2120 spark plug delivers consistent ignition performance for precise fuel-air mixture combustion across a broad spectrum of off-road utility vehicles and adventure motorcycles. Manufactured with robust ceramic insulators and precision-engineered electrodes, this 10-pack provides direct OEM replacement capability for long-term starting reliability. Designed exclusively for motorcycle, ATV, and UTV applications, these plugs maintain stable operation under demanding trail conditions.

ENGINEERING & PERFORMANCE

These ignition components feature versatile heat ranges that actively prevent electrode fouling during low-speed operation while resisting preignition when running at higher loads. High alumina ceramics surround the center electrode to accelerate heat dissipation and maintain strong electrical insulation throughout extended runs. A deep-seated copper core expands the effective thermal window, and the nickel alloy tip construction extends service intervals between replacements. The standard tapered thread design ensures accurate seating without adapter modifications.

KEY FEATURES

• OEM-style spark plug replacement for factory-style ignition systems
• High alumina ceramic insulator body for enhanced heat management
• Deep-seated copper core construction widens the optimal operating temperature window
• Nickel alloy tip geometry engineered for extended electrode wear resistance
• Heat range specifications reduce risk of cold-fouling and hot-preignition
• Wide compatibility spanning multiple decades of Japanese and European motorcycles and ATVs
• Pre-threaded packaging includes ten units per box for routine maintenance rotations

TECHNICAL SPECIFICATIONS

• Brand: NGK
• Part Name: Spark Plugs D8EA 2120
• Component Type: Spark Plug
• Materials: High alumina ceramics, copper core, nickel alloy tip
• Supported Years: 1970–2024
• Compatible Trims: Factory-equipped ignition systems for select Yamaha, Kawasaki, Honda, Suzuki, BMW, KTM, Aprilia, Benelli, Husqvarna, ATK, Textron, and Honda ATC platforms

FITMENT

• 2018 Textron Alterra (150)
• 2004–2005 Benelli Tornado Tre 900 RS
• 2003–2005 Benelli Tornado Tre 900
• 2003 ATK 125 Enduro
• 2002–2003 ATK 500 Enduro
• 2001–2004 BMW F650GS / Dakar / ABS
• 2000 Yamaha YFM400A Kodiak 4x4
• 1999 ATK 500 DT
• 1999 Kawasaki KVF300 Prairie (2x4/4x4)
• 1998–2003 ATK 605 Enduro
• 1998–2002 ATK 600 DT
• 1998–1999, 2002 ATK 350 Enduro
• 1998 KTM 400 SX
• 1997–2000 BMW F650
• 1997–1998 Aprilia Pegaso 650
• 1997 BMW F650ST
• 1996–2000 ATK 605 CC
• 1996–1999 Yamaha YFM350U Big Bear (2x4)
• 1996–1999 ATK 350 CC
• 1996–1998 KTM 620 SX / RXC
• 1996–1997 Kawasaki ZL600 Eliminator
• 1996–1997 KTM 620 Duke
• 1995–1999 Kawasaki KEF300 Lakota Utility
• 1995–1998 KTM 620 RXC
• 1995 BMW K75/3 / K75/3A
• 1994–1997 KTM 620 EXC
• 1994, 1999 Yamaha YFM400F Kodiak
• 1994 BMW K75A
• 1993, 1995–1998, 2000 Yamaha YFM400F Kodiak 4x4
• 1993 KTM 600 EXC
• 1990–1999 Yamaha TW200
• 1989–1999 Kawasaki KLF300 Bayou
• 1989–1990 KTM 600 DXC
• 1989–1990 Kawasaki ZX750 / ZX-7
• 1988–1999 Kawasaki KLF220 Bayou
• 1988–1990 KTM 600 MX
• 1988–1989 BMW K1100 RSA
• 1988 KTM 600 MXC
• 1988 Yamaha YFP350 TerraPro
• 1987–1995 Yamaha YFM350ER Moto-4
• 1987–1990 Kawasaki ZX750P / Ninja ZX-7R
• 1987–1989 Suzuki LT300E
• 1987–1988 Yamaha BW350
• 1987 Kawasaki ZL1000 Eliminator
• 1987 Yamaha SRX250
• 1986–1999 Kawasaki ZG1000 Concours
• 1986–1990 Yamaha YX600 Radian
• 1986–1988 Yamaha FZ600
• 1986–1988 Suzuki DR200 / SP200
• 1986–1987 Kawasaki KLT185
• 1986–1987 Yamaha TT225 / TT350
• 1985–2000 Yamaha XT350
• 1985–1988 BMW K100RT
• 1985–1988 Yamaha BW200 / KLF185 Bayou
• 1985–1986 Husqvarna TX510 / TC500
• 1985–1986 Kawasaki ZL900A Eliminator
• 1985–1986 Suzuki LT250EF
• 1985 Kawasaki KLT160
• 1985 Suzuki GS700E / GS700ES / XJ700X Maxim X
• 1984–1986 Kawasaki ZX900 Ninja
• 1984–1985 Yamaha FJ600
• 1984 Kawasaki KL600 / XT250
• 1983–1990 Suzuki DR100
• 1983–1988 BMW K100RS / K100
• 1983–1984 Suzuki SP250
• 1983, 1986–1988 Suzuki SP125
• 1983, 1985, 1988 Suzuki GN250 / SP100 / GR650 Tempter / GS1100ES / GS1100S Katana / GS750ES
• 1982–1988 Suzuki DR125 / DR250
• 1982–1983, 1991–1997 Suzuki GN125E
• 1982–1983 Suzuki GS1100GK / GS1100GL / DR500 / SP500 / GS 400
• 1982–1983 Yamaha XS400R Seca / XT125 / XT200 / XZ550R Vision
• 1982 Suzuki DR 100
• 1981–1983 Kawasaki KZ550D/H GPZ / KZ550A / KZ550C LTD
• 1981–1983 Suzuki DR500 / SP500 / GS 400
• 1981 Honda ATC185S / ATC200 / GL500 Silver Wing / XR500R / CM400C Custom / GL500I Silver Wing Interstate / XR200R
• 1980–1983 Kawasaki KZ 550 D Gpz / KZ550A / KZ550C LTD
• 1980–1983 Suzuki GS1100E / GS750E / GS 1100 ES
• 1980–1981 Honda CB400T Hawk / CB750C Custom / CM400E / CT110 / XR200
• 1980 Kawasaki ATC185 / KZ 550 H Gpz / GL1100 Gold Wing
• 1980 Suzuki DR400 / GS1100L
• 1979–1981 Honda CBX1050 Super Sport / CB650 / CM400A Hondamatic / CX500C Custom / XL125S / XL185S / XL500S
• 1979–1980 Honda XR250 / XR500 / CM400T
• 1979 Honda CB750L / CX500D Deluxe / XR185
• 1978–1981 Honda XL250S
• 1978–1979 Honda CB400TII Hawk II / CX500
• 1978–1979 Suzuki DR370 / SP370
• 1978 Honda CB400A Hondamatic
• 1977–1980 Honda CB750K
• 1977 Honda CT125
• 1976–1978 Honda CB750A Automatic
• 1975–1981 Honda CB750F Super Sport / GL1000 Gold Wing
• 1975–1978 Yamaha XS500
• 1975–1977 Honda CB400F Super Sport
• 1974–1978 Honda XL100 / XL125 / XL350
• 1974–1976 Honda CB200
• 1974 Honda CL200 Scrambler
• 1973–1981 Honda CB125S
• 1973–1976 Honda TL125
• 1973–1974 Honda CL125 Scrambler
• 1972–1976 Honda XL250
• 1972–1974 Honda CB350F
• 1971–1973 Honda CL100/S Scrambler / SL125 / SL100
• 1970–1973 Honda SL100
• 1970–1972 Honda CL100 Scrambler
• 1970–1972 Honda CB100

WHY RIDERS CHOOSE THIS

Riders depend on this NGK spark plug series because the engineered heat range reliably clears carbon buildup during slow off-road crawling while preventing detonation during sustained highway speeds. The aluminum-ceramic insulation matrix rapidly pulls excess heat away from the center electrode, which directly translates to more consistent spark voltage under heavy load. Combined with the wear-resistant nickel alloy tip and integrated copper core, the plug maintains sharp ignition delivery across thousands of miles without frequent re-gapping. Built specifically to match factory mounting dimensions and electrode reach for motorcycles, ATVs, and UTVs, it restores crisp throttle response and eliminates weak-start frustrations found in cheaper universal alternatives.