This Genuine NGK spark plug (No. BKR5EIX-11) is a high-quality ignition component designed for reliable starting and clean combustion in petrol engines used across garden, landscaping, and light construction machinery, as well as some automotive and motorcycle applications where specified. It features a 14.0 mm thread diameter with a 19 mm reach (0.75 in) and a factory-set 1.1 mm gap to match many modern ignition systems. Built with a fine-wire iridium centre electrode and a durable ground electrode, it delivers strong, consistent sparks while resisting wear over long service intervals. The robust steel shell and ceramic insulator provide strength and heat resistance. This is a Genuine Part from NGK, made for dependable performance and straightforward maintenance with a 16 mm spanner.

Key Features:
– Genuine NGK part for assured quality and fit
– Iridium fine-wire centre electrode for long life and stable ignition
– Resistor type (R) to reduce electromagnetic interference with electronics
– Thread diameter 14.0 mm; thread length 19 mm (0.75 in) for common cylinder head designs
– Pre-set gap size 1.1 mm to suit many OE specifications
– Spark position/projection 3.5 mm to aid efficient combustion
– 16 mm hefor easy installation with standard plug sockets
– Strong ceramic insulator and plated steel shell for heat and corrosion resistance
– Supports smoother idling, better cold starts, and consistent performance
– NGK reference: BKR5EIX-11; MPN 5464

Typical Applications:
Suitable for petrol engines in lawn mowers, ride-on mowers, generators, pressure washers, compactors, and similar construction or horticultural equipment that specify BKR5EIX-11. Also used in select motorcycles and light vehicles requiring a 14 mm thread, 19 mm reach (0.75 in), and 1.1 mm gap. Always check the engine manufacturer’s specification before fitting.

Also known as:
Ignition plug, engine plug, sparking plug, spark igniter, resistor spark plug, iridium spark plug, Iridium IX plug.

Alternate Part Numbers:
BKR5EIX11

Product Specifications