NGK Spark Plug BPR4ES

Intro:
The NGK BPR4ES Spark Plug is a standard nickel resistor type designed for dependable ignition performance, stable combustion and long service life. It is engineered for OE replacement use across a wide range of petrol engines.

Key Benefits:

• Supports reliable engine starting and smooth running performance
• Helps maintain stable and efficient combustion
• Reduces ignition interference for improved electrical stability
• Provides durable OE style replacement for routine servicing

Applications:

• Routine vehicle servicing and maintenance
• Petrol engine tune ups and repairs
• Workshop and fleet servicing requirements
• General restoration and ignition system replacement

Features:

• Nickel centre and ground electrodes for consistent spark delivery
• Trivalent metal plating for corrosion resistance and anti seizure protection
• Corrugated ribs to prevent flashover
• Alumina silicate ceramic insulator for strength and heat transfer efficiency
• Copper core for improved heat dissipation
• Triple seal construction to prevent gas leakage
• Resistor type design with 5k ohm resistance for interference suppression
• Projected insulator design for improved combustion efficiency
• Solid terminal type connection
• Pre set 0.8 mm gap for correct ignition performance

Why Choose This Product:

• Reliable OE replacement suitable for professional workshop use
• Consistent performance for standard petrol engine servicing
• Durable construction designed for 30,000 mile service life
• Trusted NGK quality for everyday maintenance applications

SPECIFICATIONS

• Product type: Standard resistor spark plug
• Brand: NGK / NTK
• Model: BPR4ES
• SKU: NGK6578
• Electrode material: Nickel
• Electrode type: Standard
• Centre electrode size: 2.5 mm
• Gap: 0.031 inch (0.8 mm)
• Resistor: Yes
• Resistor value: 5k ohm
• Heat range: 4
• Thread diameter: 14 mm
• Thread pitch: 1.25 mm
• Thread reach: 19 mm (3/4 inch)
• Hex size: 21 mm (13/16 inch)
• Seat type: Gasket
• Terminal type: Solid
• Overall height: JIS standard
• Insulator material: Alumina silicate ceramic
• Copper core: Yes
• Torque specs (cast iron): 18–25.3 lb ft
• Torque specs (aluminium): 18–21.6 lb ft
• Longevity: Up to 30,000 miles
• Warranty: 60 days
• Compatibility: Petrol engines requiring BPR4ES specification spark plugs