NGK BP8HS Spark Plug - 14mm Thread (Short Reach)

The NGK BP8HS is a very cold-range, short-reach spark plug engineered for high-output, turbocharged, and competition-spec Volkswagen air-cooled engines requiring ½-inch (12.7 mm) thread reach. Designed for the most demanding conditions, this plug provides maximum protection against pre-ignition and detonation in engines producing extreme combustion temperatures and pressures.

With its cold heat range (8), the BP8HS efficiently transfers heat away from the firing end, maintaining stable operation under sustained full-throttle or high-boost use. The projected insulator (P) optimises combustion efficiency, ensuring a complete burn and stable ignition, even in race-tuned VW engines.

Featuring NGK’s solid copper-core electrode, the BP8HS provides exceptional conductivity and long-term durability. It’s the ideal choice for drag racing, turbocharged, or high-compression air-cooled VW builds, where reliability and precision ignition are critical.

Key Features:

• Genuine NGK BP8HS short-reach spark plug
• Designed for race-prepared, turbocharged, and high-performance VW engines
• Cold heat range (8) – ideal for extreme temperature control and detonation resistance
• Projected insulator (P) for improved combustion and efficiency
• Copper-core electrode ensures consistent spark and excellent heat dissipation
• 14 mm × 1.25 thread, 12.7 mm reach, 21 mm spanner size
• M4 terminal type – fits standard VW ignition leads
• Sold each – 4 required per engine

Applications:

• VW Beetle 1300–1600 air-cooled engines with performance or race cylinder heads
• VW Karmann Ghia competition and turbo builds
• VW Type 2 (Split, Bay) and Type 3 high-performance or track engines
• Suitable for CB Performance, AA Performance, or other aftermarket short-reach heads
• Ideal for racing, drag, turbo, and high-compression VW applications

NGK Code Explained:

• B – 14 mm thread diameter
• P – Projected insulator type
• 8 – Very cold heat range (2 = hot, 10 = cold)
• H – 12.7 mm (½ inch) thread reach (short reach)
• S – Standard design features

Specification:

• Thread size: M14 × 1.25
• Thread reach: 12.7 mm
• Spanner size: 21 mm
• Terminal type: M4
• Electrode core: Copper
• Quantity: Sold each