NGK Standard Spark Plug BPR4ES (6578) – Kawasaki Engine Application

NGK BPR4ES Standard Spark Plug (Stock No. 6578) is a resistor-type copper-core spark plug commonly used in compatible Kawasaki small-engine applications. It is designed to provide reliable ignition, consistent heat transfer, and dependable service performance when the BPR4ES specification is required.

Part Number / Service Number: BPR4ES
NGK Stock Number: 6578
Brand: NGK
Type: Standard Resistor Spark Plug
Thread Size: M14 x 1.25
Thread Reach: 19 mm (0.750 in)
Hex Size: 13/16 in
Preset Gap: 0.8 mm (0.032 in)
Heat Range: 4
Seat Type: Gasket / Flat Seat
Center Electrode Core: Copper
Electrode Material: Nickel
Approx. Resistance: 5,000 ohms

Key Features & Benefits:

• Copper-core construction supports efficient heat transfer.
• Resistor design helps suppress electrical interference.
• Nickel electrodes provide reliable standard-service performance.
• Designed for consistent ignition and dependable starting in compatible engines.
• Gasket-seat construction provides proper sealing when installed to manufacturer specifications.
• Suitable as a maintenance replacement where BPR4ES is specified by the engine manufacturer.

Fitment Note: Spark-plug requirements can vary by Kawasaki engine model and specification number. Always verify that BPR4ES is the specified plug for your exact engine before ordering or installation.