NGK BPR5HS

• B- Meaning it has a 14mm thread size and a 13/16" hex size
• P- Projected insulator type
• R- Resistor Type
• 5- Position on heat range from 2-12 (2 hottest, 12 coldest)
• H- 12.7mm (1/2") thread reach.
• S- Standard 2.5 mm Center Electrode