Genuine NGK BPR5ES Standard Resistor Spark Plugs — 4 Pack Purchase four new genuine NGK BPR5ES spark plugs for compatible engines that specify this exact plug or an approved equivalent. Product features Brand: NGK Manufacturer part number: BPR5ES Reference stock number: 7734 — confirm packaging Type: Standard resistor spark plug Heat range: 5 Center electrode core: Copper Electrode tip: Nickel alloy Thread diameter: 14 mm Thread size: M14 × 1.25 Thread reach: 19 mm (3/4 inch) Hex size: 13/16 inch (20.8 mm) Seat type: Gasket / flat seat Reference spark gap: Approximately 0.9 mm (0.036 inch); verify the engine manufacturer's specification Quantity: 4 spark plugs Condition: New Fitment information Use only for engines whose parts catalog, owner's manual, or approved specification calls for NGK BPR5ES. Check the exact engine model, required heat range, thread reach, and spark plug gap before purchase. Similar-looking plugs are not necessarily interchangeable. Package contents 4 × NGK BPR5ES spark plugs Important: Spark plug gap and application requirements vary by engine. Always follow the equipment or engine manufacturer's specifications before installation.