NGK BPR4HS Spark Plug Box 10

The NGK BPR4HS is a high-quality, resistor-type spark plug featuring a copper core for superior heat dissipation, corrosion resistance, and a projected tip for reliable ignition. It is widely used in motorcycles, scooters, small engines, and performance 4-stroke engines. It has an M14 x 1.25 thread, 19mm reach, and a 20.8mm (13/16") hex size.

Key Features & Specifications:

• Part Number: BPR4HS
• Fits: Honda generators & Kubota engines
• Thread: Diameter: 14mm
• Thread: Reach: 19mm (3/4")
• Hex Size: 20.8mm (13/16")
• Tip Material: Nickel Alloy
• Core Material: Copper
• Resistor: Yes (5 kOhm)
• Gap: 0.7mm - 0.8mm (0.028" - 0.032")

Benefits:

• Corrosion Resistance: Zinc chromate plating protects against environmental damage and seizing in aluminium cylinder heads.
• Improved Performance: Copper core and nickel alloy electrodes ensure excellent heat dissipation and long service life.
• Consistent Spark: Resistor design reduces electrical interference for smooth ignition and reliable engine operation.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £100
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£27.50 for delivery before 10:30am
£20.00 for delivery before 12:30pm
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**Separate carriage charges apply to bulk products such as 205L barrels.