NGK 4055 BPR7EIX Spark Plug (Iridium IX)

The NGK 4055 Iridium IX Spark Plug (BPR7EIX) is engineered for high-performance engines requiring superior ignitability, throttle response, and durability. Featuring an ultra-fine iridium center electrode and a tapered ground electrode, it delivers consistent combustion, reduced misfires, and extended service life—ideal for motorcycles, powersports, and performance vehicles.

Features & Benefits:

🔧 Iridium tip provides exceptional durability and a stable spark
🔧 Fine-wire design improves ignitability and throttle response
🔧 Resists fouling for consistent performance under load
🔧 Pre-gapped for easy, OE-style installation

Specifications:

Brand & Part Number: NGK 4055 (BPR7EIX)
Material: Iridium
Thread Size: 14mm
Reach: 19mm (0.75 in)
Hex Size: 13/16 in (20.8mm)
Heat Range: 7
Seat Type: Gasket
Resistor: Yes
Gap: 0.8mm (0.031 in)

Upgrade to NGK BPR7EIX Iridium IX for high-performance ignition, improved fuel efficiency, and longer plug life—order now!