The NGK spark plug wire set for the Audi A4 delivers consistent ignition spark across the service life. 6-wire set with EPDM insulation and reinforced silicone boots resists heat cycling and engine vibration. Crack-resistant boots prevent the most common misfire cause on high-mileage engines.

Fits: 2000-2024 Audi A4 (all engine variants).

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NGK 6-Wire Spark Plug Wire Set — A4 WS89646