NGK BP5ES Spark Plug - 14mm Thread (Long Reach)

The NGK BP5ES is a high-quality long-reach spark plug designed for use in performance air-cooled Volkswagen engines and aftermarket cylinder heads that require a 14mm thread and 19mm reach. Commonly fitted to modified or high-performance engines using long-reach plug cylinder heads, the BP5ES offers excellent reliability, efficient combustion, and a clean burn under a wide range of operating conditions.

Featuring a projected insulator design (P), this plug moves the spark position closer to the centre of the combustion chamber for better flame propagation and improved power output. The medium heat rating (5) makes it ideal for mildly tuned or street-performance engines where consistent ignition and fouling resistance are essential.

Built with a solid copper core electrode, the NGK BP5ES ensures exceptional heat dissipation and durability, while the standard design (S) maintains OE-level fitment with a 21mm spanner size and M4 terminal type. Each plug is manufactured to NGK’s exacting standards, providing long service life and dependable performance for all VW enthusiasts.

Key Features:

• Genuine NGK BP5ES spark plug – long-reach 14mm thread
• Ideal for performance air-cooled VW engines and aftermarket heads
• Projected insulator (P) for improved combustion efficiency
• Medium heat range (5) – suited to road and mild performance use
• Copper-core electrode for superior conductivity and heat transfer
• Standard 21mm spanner size for easy installation
• M4 terminal type – fits standard ignition leads
• Sold each – 4 required per engine

Applications:

• VW Beetle performance engines
• VW Karmann Ghia performance engines
• VW Type 2 (Split/Bay) with performance long-reach heads
• VW Type 3 and VW Buggy/Baja engines with aftermarket cylinder heads
• Custom or tuned air-cooled engines using 14mm x 19mm plug fitment

NGK Code Explained:

• B – 14mm thread diameter
• P – Projected insulator type
• 5 – Heat range (2 = hot, 10 = cold; 5 = medium-hot)
• E – 19mm thread reach (long reach)
• S – Standard design features

Specification:

• Thread size: M14 x 1.25
• Thread reach: 19mm
• Spanner size: 21mm
• Terminal type: M4
• Electrode core: Copper
• Quantity: Sold each