NGK 97506 SILZKBR8D8S iridium spark plugs, set of 4

NGK 97506 SILZKBR8D8S Iridium Spark Plugs 4-Pack

Premium quality for modern gasoline engines

The NGK 97506 SILZKBR8D8S Laser Iridium spark plugs are an original 4-piece set of high-performance iridium spark plugs designed for powerful and turbocharged engines. These are used in vehicles with high compression ratios such as BMW N20, N55, S55 series and others, where stable ignition, high heat resistance, and durability are required. These plugs ensure accurate sparking, minimize misfires, reduce fuel consumption, and extend engine life.

Advantages

• Iridium center electrode for consistent ignition of the fuel mixture

• Platinum ground electrode with minimal wear

• Extended lifespan of up to 120,000 km

• Efficient heat dissipation via copper core

• Optimal heat range for tuned and stock engines

• 5 kOhm resistance for radio interference suppression

• Factory-set 0.7 mm gap with no adjustment required

• Triple-layer anti-corrosion coating

• Resistant to harsh conditions and vibration

• Compatible with a wide range of BMW and other models

Compatibility

Suitable for engines:

• BMW: N20, N54, N55, S55, S63, B48, B58

• MINI: Cooper S (F55/F56/F60)

• Infiniti: Q50, Q60 with 2.0T turbo engine

• And other vehicles requiring SILZKBR8D8S plug type with M12×1.25 thread

Package contents

• 4 original NGK 97506 SILZKBR8D8S spark plugs in factory packaging

Technical specifications

• Brand: NGK

• Brand registration country: Japan

• Material: iridium, platinum, copper, ceramic

• Size: thread length 26.5 mm, thread M12×1.25

• Color: metallic

• Weight: 46 g (per plug)

• Condition: new

• Application: spark plug for gasoline engines

• Type: SILZKBR8D8S

• OEM number: 97506

• Thread: M12×1.25

• Seating depth: 26.5 mm

• Wrench size: 14 mm (Bi-Hex)

• Heat range: colder plug (two steps below standard)

• Gap: 0.7 mm

• Resistance: 5000 Ohms

• Service life: up to 120,000 km

• Ignition voltage: reduced to minimize wear

• Insulator type: ceramic

• Packaging: original NGK cardboard box