Ngk 1503 Standard Spark Plug BPR7HS

Product Description

The NGK 1503 is a standard spark plug designed for reliable ignition across a wide range of automotive and non-automotive applications. Sold under the NGK part number BPR7HS, this plug features a solid copper core that delivers superior heat dissipation and supports a broader heat range than many alternatives. The 5-rib insulator design prevents flashover, and cold-rolled threads protect the cylinder head during installation and removal. NGK's triple gasket sealing process virtually eliminates combustion gas leakage past the shell. A corrosion-resistant plating on the shell makes removal straightforward even after extended service intervals.

This plug is suited for residential and commercial small-engine equipment as well as general automotive applications. Typical installations include lawn and garden equipment, generators, marine outboards, powersports vehicles, and passenger vehicles where the BPR7HS heat range and thread specification are called for. It is sold individually and appropriate for any technician or service professional maintaining equipment that accepts this plug configuration.

Key Features

• Solid copper core provides superior heat dissipation and a broad heat range
• 5-rib insulator design prevents flashover in high-voltage ignition environments
• Cold-rolled threads protect cylinder head threads during installation and removal
• Triple gasket sealing process virtually eliminates combustion gas leakage past the shell
• Corrosion-resistant shell plating simplifies removal after extended service
• OE-approved design suitable for automotive and non-automotive applications

Compatibility

Designed as an OEM-style replacement spark plug for applications specifying the BPR7HS plug configuration across automotive and non-automotive small-engine equipment.

Installation Notes

Spark plug replacement is a standard task for small-engine technicians, marine mechanics, and automotive service professionals. Always disconnect the ignition wire or disable the ignition system before removing a spark plug. Use a properly sized spark plug socket and torque wrench to avoid over-tightening, which can damage cylinder head threads. Follow the engine manufacturer's service manual for correct gap specification and torque value before installation.