Description
NGK stock number 1503 identifies the BPR7HS BLYB carded/blister-pack version of its standard resistor spark plug. This short-reach plug is used in compatible marine and powersports engines where BPR7HS is specified, and it differs from BPR7HS-10 and other gap variants.
Specifications
| NGK stock number | 1503 |
|---|---|
| Plug designation | BPR7HS BLYB |
| Thread | M14 x 1.25; 12.7 mm (1/2 in) reach |
| Hex size | 20.8 mm (13/16 in) |
| Seat | Flat gasket seat |
| Listed pre-gap | 0.7 mm (0.028 in) |
| Heat range / terminal | NGK 7; removable terminal nut |
| Electrodes | Nickel tips, copper core; resistor type |
Applications and compatibility
BPR7HS is catalogued for selected two-stroke outboards, scooters, ATVs and other small engines. Exact equipment, engine configuration and required gap must be checked against the manufacturer's service specification.
Package and installation notes
Sold as one blister-packed spark plug, not a four- or six-pack. NGK's recommended installed gap can vary by engine; the listed supplied gap is not a universal setting.
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