NGK Laser Iridium SILZKBR8D8S 97506 iridium spark plug set for BMW Infiniti MINI, set of 4

Set of Iridium Spark Plugs NGK Laser Iridium SILZKBR8D8S 97506 for BMW Infiniti MINI kit 4 pcs

Premium Solution for High-Performance Engines

The NGK Laser Iridium SILZKBR8D8S spark plug set (part number 97506) represents the pinnacle of engineering in ignition systems. These spark plugs are specifically designed for modern forced-induction engines that require maximum output and spark stability. The use of precious iridium on the center electrode combined with a platinum chip on the ground electrode guarantees minimal wear even under extreme thermal and mechanical loads. This technical solution ensures a stable spark gap throughout the entire service life, which is critical for turbocharged units.

Technological Advantages of Design

The Laser Iridium series ensures ultra-fast flame front propagation within the combustion chamber. Due to the extremely fine diameter of the center electrode, the required ignition voltage is reduced, facilitating engine starts in cold weather and decreasing the load on the ignition coils. The insulator design with a long ceramic nose prevents surface flashover. A copper core integrated into the center electrode effectively dissipates excess heat, protecting the engine from detonation and pre-ignition.

Operational Reliability and Resource

The galvanic nickel plating of the shell provides exceptional corrosion protection and prevents the threads from seizing in the cylinder head. The integrated resistor ensures electromagnetic interference suppression, eliminating malfunctions in sensitive onboard electronics, sensors, and vehicle multimedia systems. The high thermal resistance of the materials allows this kit to be used in engines with direct fuel injection and twin-turbo systems.

Detailed Compatibility Table for BMW Vehicles

This spark plug set is the factory-recommended solution for a wide range of BMW models, ensuring full compatibility with N20, N54, N55, N63, S55, S63 engine series, and others.

Technical Specifications

• Brand: NGK

• Brand Registration Country: Japan

• Material: Iridium, platinum, nickel-plated steel, oxide ceramic, copper

• Size: Thread diameter 12 mm, thread length 26.5 mm, thread pitch 1.25 mm, hex size 14 mm

• Color: Metallic, white

• Weight: 188 grams

• Gender: Unisex

• Condition: New

• Product Group: Spark Plugs

• Purpose: Igniting the air-fuel mixture in BMW, Infiniti, MINI engines

• Compatibility: BMW (12120037582, 12120037580), Infiniti, MINI, N20, N55, S55, N63, S63 engines

• Features: Bimetal technology (iridium/platinum), extended insulator, 5 kOhm interference resistor

• Thread Type: M12 x 1.25

• Socket Type: Bi-Hex (12-point)

• Spark Gap: 0.8 mm

• Heat Range: 8

• Package Contents: 4 spark plugs, individual boxes, master protective box

• Sealing Type: Flat gasket washer