NGK BPR4ES-11 Spark Plug (4224)

The NGK BPR4ES-11 (stock #4224) is a 14 mm replacement spark plug trusted for reliable starts and a consistent spark. It shares the hotter heat range, projected tip and built-in resistor of the BPR4ES, with a wider 1.1 mm pre-set gap for engines and ignition systems that call for it.

Features

• Wider 1.1 mm pre-set gap
• Hotter heat range to help burn off deposits in lower-load engines
• Projected insulator tip for improved ignitability and anti-fouling
• Built-in resistor to suppress electrical noise
• Trivalent metal plating for excellent anti-corrosion and anti-seizing properties

Specifications

• Brand: NGK
• Part number: BPR4ES-11
• Stock number: 4224
• Thread diameter: 14 mm
• Thread reach: 19 mm (3/4")
• Hex size: 13/16" (20.6 mm)
• Heat range: 4
• Pre-set gap: 1.1 mm (0.044")
• Resistor: Yes

Fitment

Always confirm the correct spark plug for your engine using your owner's manual or the part number on your existing plug. Check and set the electrode gap to your equipment manufacturer's specification before installing.