Set of 8 iridium spark plugs NGK96220 SILZKGR8D7E for Audi Porsche 4.0L V8

Set of 8 NGK96220 SILZKGR8D7E Iridium Spark Plugs for Audi Porsche 4.0L V8

Complete Service Kit for Powerful V8 Engines of the VAG Group

This ready-made set of 8 original NGK spark plugs from the premium Laser Iridium series is designed for the scheduled simultaneous replacement of all ignition system components in modern eight-cylinder engines. Forced gasoline units with a volume of 4.0 liters (TFSI and Twin-Turbo families) operate under increased thermodynamic pressure. Simultaneous installation of the complete kit prevents imbalance in cylinder operation, stabilizes crankshaft rotation speed at idle, and optimizes fuel combustion processes across the entire load range. Timely updating of the unit reduces the load on the ignition coils and minimizes the risk of destructive micro-detonation.

Engineering Excellence of Laser Technologies

A professional solution from the world leader in ignition components production ensures stable spark formation thanks to uncompromising assembly quality and materials:

• Ultra-thin iridium central electrode — processed with precision laser method, focuses the spark at one point, reducing the voltage required for breakdown.

• Platinum wear-resistant plate on the ground contact — minimizes metal erosion under the influence of an electric arc, maintaining the factory gap unchanged.

• Protective nickel-plated housing — resists corrosion, aggressive fuel additives, and prevents thread jamming during disassembly.

• High-strength ceramic insulator with ribbing — prevents surface current breakdown and energy leakage under peak loads in coils.

A copper core, deeply integrated into the central electrode, quickly dissipates excess heat from the working area, preventing the occurrence of dangerous pre-ignition.

Detailed Specification of Applicability by Brands, Models, and Years

Each element of the set is packed in an individual hard box with a plastic ring, which physically protects the inter-electrode gap from deformation during transportation. The kit is fully ready for installation at the auto service without prior manual adjustment of parameters.

Technical Specifications

• Brand: NGK

• Brand Registration Country: Japan

• Country of Manufacture: Japan

• Material: steel, copper, ceramic, iridium, platinum

• Size: thread M12 x 1.25, thread length 26.5 mm, thread pitch 1.25 mm, hex 14 mm Bi-Hex

• Color: silver metal, white porcelain

• Weight: 344 g

• Condition: new

• Product Group: automotive ignition system parts

• Purpose: ignition of the fuel mixture in high-power gasoline ICE

• Compatibility: for eight-cylinder Audi and Porsche 4.0L V8 engines, original interchangeable OEM codes: 06M905606F, 9A790560600, 06M905606J, 9A790560150

• Features: full engine set of 8 pieces, twelve-sided nut profile, built-in resistance 5 kOhm, laser electrode seam, heat rating 8, flat seat with washer

• Package Contents: 8 individual cardboard packages with spark plugs, general brand transport box