The NGK B7ES is a high-quality standard spark plug designed for a wide range of older cars and motorcycles, such as the BMW 3 Series (E21; 1975–1983), Honda CB750 (1969–1978), and Yamaha RD350 (1973–1975). It is suitable for 2-stroke and 4-stroke gasoline engines, ensuring reliable ignition, stable engine performance, and a long lifespan. This spark plug is ideal for classic models like the Kawasaki Z1 or Suzuki GT750, as well as some European cars like the Porsche 911 from the 1970s. Manufactured to strict NGK standards with a nickel electrode, it provides optimal performance under various conditions, from daily driving to light racing applications. Check compatibility with your vehicle or motorcycle in the table below, divided into cars and motorcycles. For comprehensive maintenance, explore our spark plugs at Car Parts Herkules!
| Brand | Model | Engine Type | ccm | kW |
|---|---|---|---|---|
| Cars | ||||
| BMW | 3 Series (E21; 1975–1983) | 4-cylinder 4-stroke | 1990 | 80 |
| Porsche | 911 (1964–1977) | Boxer-6 4-stroke | 1991 | 96 |
| Motorcycles | ||||
| Honda | CB750 Four (1969–1978) | Inline-4 4-stroke | 736 | 50 |
| Honda | CR250M Elsinore (1973–1976) | 2-stroke | 248 | 28 |
| Kawasaki | Z1 900 (1972–1976) | Inline-4 4-stroke | 903 | 60 |
| Moto Guzzi | V7 Sport (1971–1974) | V2 4-stroke | 748 | 38 |
| Suzuki | GT750 (1971–1977) | Inline-3 2-stroke | 738 | 49 |
| Triumph | Bonneville T140 (1973–1983) | Inline-2 4-stroke | 744 | 36 |
| Yamaha | RD350 (1973–1975) | Inline-2 2-stroke | 347 | 29 |
| Yamaha | XS650 (1970–1983) | Inline-2 4-stroke | 653 | 39 |
Specifications: Spark plug, thread diameter: 14 mm, thread length: 19 mm, electrode gap: 0.8 mm, heat range: 7 (medium-hot), resistance: none (non-resistor).
Manufacturer Part Numbers: NGK B7ES (1111), DENSO W22ES-U, Champion N4C.
OEM Numbers: BMW: 12 12 1 261 248; Honda: 98079-57846; Yamaha: 94701-00044.
Data sheet