NGK BP7HS Spark Plug - 14mm Thread (Short Reach)

The NGK BP7HS is a cold-range, short-reach spark plug designed for high-performance or hot-running air-cooled Volkswagen engines that require a ½-inch (12.7 mm) reach plug. It is particularly well-suited to uprated Beetle, Karmann Ghia, Type 2, and Type 3 engines fitted with short-reach cylinder heads or performance builds that generate increased combustion heat.

With a colder heat range (7) than standard, the BP7HS efficiently dissipates heat to prevent pre-ignition and detonation in engines running higher compression ratios, advanced ignition timing, or sustained high-RPM use. The projected insulator (P) improves flame propagation and fuel burn, helping to maintain smooth running and optimal power under demanding conditions.

Constructed with NGK’s copper-core electrode, the BP7HS ensures outstanding conductivity, consistent spark stability, and long-term durability. It is ideal for tuned engines, spirited road driving, or off-road VWs where heat management and reliability are crucial.

Key Features:

• Genuine NGK BP7HS short-reach spark plug
• Designed for high-performance or hot-running VW engines
• Cold heat range (7) – prevents overheating and pre-ignition
• Projected insulator (P) for efficient combustion and throttle response
• Copper-core electrode for reliable ignition and durability
• 14 mm × 1.25 thread, 12.7 mm reach, 21 mm spanner size
• M4 terminal type – fits standard ignition leads
• Sold each – 4 required per engine

Applications:

• VW Beetle 1200 – 1600 with short-reach performance heads
• VW Karmann Ghia performance or high-compression engines
• VW Type 2 (Splitscreen/Baywindow) and Type 3 tuned engines
• Suitable for uprated or modified air-cooled VW engines with higher combustion temperatures
• Ideal where BP6HS runs too hot under heavy-load conditions

NGK Code Explained:

• B – 14 mm thread diameter
• P – Projected insulator type
• 7 – 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