NGK B6HS Spark Plug

Ariel: Square Four 1937–1951; Square Four Mk I 1937–1951

Atala: Master 1998–1999; Master LF 1996 onwards

Bajaj: 50 Spirit 1999 onwards; Bonnie 50 1993 onwards; Spirit 1999 onwards; Sunny 50 1996 onwards; Sunny, Bonnie 50 1993 onwards; Vespa 1993 onwards; Vespa, Chetak (Scooter) 1993 onwards

Batavus: Mondial 1980 onwards

Benelli: Elle 1983–1989; G2 1983–1989; Laser 1984–1989; Pedali 1983–1989; S50 1981–1989

BMW: R 3 1936; R 6 1937; R 11 1929–1934; R 12 2 1935–1942; R 16 1929–1935; R 20 1937–1938; R 23 1938–1940; R 35 1937–1940; R 52 1928–1929; R 71 1938–1941

BSA: A10 Golden Flash 1950–1962; B31 1945–1959; Beaver 1979; Beaver, Brigand, Boxer; Boxer 1979; Brigand 1979; D1 1948–1954; D14 Bantam 1968–1969; Golden Flash (½”, 12.7mm Thread Reach) 1950–1954; M21 1937–1963; M33 1933–1935

DKW: 159 ES 1972–1976; 504 M 1972–1976; 505 P 1972–1976; 506 M 1972–1976; 510 1972–1976; 530 1976–1983; 532 1976–1983; 533 1976–1983; 534 1976–1983; 535 1976–1983; Jet 1972–1976; RT 125 7 2 1954 onwards; RT 200 H 1952 onwards; Sportmofa 1980–1983

Ducati: 125 TS 1959–1965; 175 TS 1958–1960; 250 Desmo, Monza, Sebring 1971–1974; 350 Desmo 1970–1976; 350 Desmo, Sebring 1971–1974; 350 F3 1986–1987; 350 GTL 1979 onwards; 350 MK III 1970–1976; 350 Vento 1980 onwards; 450 Desmo, Sebring 1971–1974; 450 Scrambler 1970–1976; 500 Desmo 1978–1983; 500 Sport Desmo 1979–1983; 860 GT 1975 onwards; 860 GTS 1975 onwards; 860 S 1975 onwards; 900 Darmah

Ering: AT 50 pt 2 1999–2001; Cat 50 1998–2002; Jet 50 1999–2002; Rapido 50 1999–2001; RT 50 2007 onwards

Fantic: Gran Turismo, Lei 50, Issimo (all models); Professional 125; Trial 125 1977 onwards; Trial 200 1979 onwards; Trial 240 1982 onwards

Gilera: ECO 1979 onwards; GSA 1982 onwards

Hercules: City Bike C1 1972–1978; City Bike C2 1972–1978; City Bike C3 1974–1978; Hobby Rider HR 1 1972–1987; Hobby Rider HR 2 1972–1987; M1 1972–1977; M2 1972–1977; M4 1974–1978; M5 1974–1978; MK 1S 1978–1980; MK 2S 1978–1980; MP 2 1972–1977; MP 4 1972–1977; MX 1 1989 onwards; Optima 3 1978 onwards; Sport Bike SB2 1972–1979; Sport Bike SB3 1974–1979; Supra 2D, 3D 1980 onwards; Supra 4GP 1980 onwards; Supra Enduro 1980 onwards

Honda: PF 50 MR2 1975–1978

Husqvarna: Husky BOY JNR 50 2001 onwards; Husky Boy Junior 1999–2003; Husky Boy Junior (12.7mm Thread Reach) 1999–2002; Husky Boy Racing 2001 onwards; Husky Boy Senior 2001 onwards; Husky Boy Senior (12.7mm Thread Reach) 1999–2002; Husky BOY SNR 50 2001 onwards

Italjet: Mini Bambino Junior Cross 50 1982–1984; Pack III 1991 onwards; Scimitar KIT KAT 50 up to 1982; Teenager Junior Cross 4M 50 up to 1982

Jawa: 210 1985 onwards; 215 1986 onwards; 350 Gespann 1987 onwards; 638.5 Gespann 1985 onwards; Jawa Economy, Jive, Jazz; MJ50, Korado Basic/K’start, Lux; Star 50S, C 1986–1987; TS 350 1986 onwards

Kawasaki: KC 125 1976–1978; Star 50 1969–1970

Kreidler: Flory MF12 1976–1978; Flory MF13 1976–1978; Flory MF23 1977 onwards

KTM: 50 MS 1981 onwards; 50 SXR Pro Junior 1997 onwards; Comet 1976 onwards

Kymco: Flexer 2001 onwards; Quadro 2001 onwards; Tomos Classic 2001 onwards; Tomos TX 50 2001 onwards

MBK: 50 VL 1971–1980; 50 VLC 1971–1980; 51 SU 1981–1983; 151 L 1979–1983; 151 LB 1979–1983; 151 LC 1979–1983

Montesa: Cota 247

Moto Guzzi: Dingo 3M 1963–1976; Dingo MM 1963–1976; Trotter 1970–1973

Moto Roma: MRX3 2002 onwards

Neval: Ural 650cc 1985 onwards

NSU: Maxi 1957–1961; Prima 3 1958–1961; Prima 3K 1958–1961; Prima 3KL 1958–1961; Prima 5 1957–1961; Quick 50 1962 onwards; Quickly F23 1963 onwards; Quickly N 1963 onwards; Quickly N23 1963 onwards; Quickly S 1962 onwards; Quickly S 2 1962 onwards; Quickly S 23 1962 onwards; Quickly TTK 1962 onwards; Super Max 1959–1961

Peugeot: 103 50 LSM-D 1982 onwards; 103 50 SPM-D 1975 onwards; GL 10 1979 onwards

Piaggio: APE 50 1980–1999; P125X; PK 50 1982–1987; PK 50 S 1982–1987; PK 100 S 1983–1993; Primavera & PK 125; PX 125 E Lusso 1982 onwards; PX 150 E Lusso 1982 onwards; Special 50 1983 onwards; Vespa 125 PX MA AE 1986 onwards; Vespa 125, P125X, Super 1982–1984; Vespa 125GT, 125GTR 1984–1989; Vespa 150 PX MA AE 1986 onwards; Vespa 150E, S, X, Sprint 2008 onwards; Vespa PX125 (2-Stroke, Euro 1) 2000–2008; Vespa PX150 1983–2008; Vespa Super Sprint Veloce 150 2001–2004

Puch: Maxi: 2.0 HP Models

Rieju: MX 50 Infantil Morini S5 2001; MX50 (Morini S5 engine) 2003 onwards

Sachs: City Bike C1 1972–1978; City Bike C2 1972–1978; City Bike C3 1974–1978; Hobby Rider HR 1 1972–1987; Hobby Rider HR 2 1972–1987; KX 50 1997 onwards; M1 1972–1977; M2 1972–1977; M4 1974–1978; M5 1974–1978; MK 1S 1978–1980; MK 2S 1978–1980; MP 2 1972–1977; MP 4 1972–1977; Optima 3 1978 onwards; Sport Bike SB2 1972–1979; Sport Bike SB3 1974–1979; Supra 2D 1980 onwards; Supra 3D 1980 onwards; Supra 4GP 1980 onwards; Supra Enduro 1980 onwards

Tomos: A3 1984–1996; A3/A5K 1984–1996; A5K 1984–1996; AT50 1986–1991; AT50, ATX50, NTX50 1986–1991; ATX 50 1986–1991; NTX50 1986–1991

Yamaha: LB 2 80 1980; LB 2 M 1975–1980; LB 3 80 1974–1983; LB 50 Chappy 1974–1983; LB 80 2A 1981–1985; LB 80 2AC 1981–1985; LB 80 2AD 1981–1985; LB 80 2H 1981–1985; LB 80 3D 1981–1985; LB2-80 Chappy 1981–1985; LB80-2A, AC, AD, H, 3, 3D 1976–1978; RD 50 MX 1977–1981; TY 50 M 1977–1980; TY 80 B 1973–1984; V 50 1980–1985; V 50 M 1980; V 50 MA 1980–1985