Ignition Coil and Iridium Spark Plugs for Audi A4 (2017-2020) 2.0L

Direct-Fit Ignition Coil & Iridium Spark Plug Kit for 2017-2020 Audi A4

Direct Replacement Ignition Service Kit: Restores high-voltage secondary ignition energy and optimal combustion timing on direct-injected 2.0L turbocharged powertrains.

The Stock A4 Dielectric Breakdown and Spark Degradation

The direct-injected EA888 Gen 3 engine operates under elevated cylinder pressures and substantial thermal cycles. Over time, factory ignition coils suffer internal dielectric insulation breakdown and winding fatigue, causing spark blowout under load. Simultaneously, standard plug electrode erosion widens the gap, straining the primary circuit and causing rough idle, hesitation, and cylinder misfire trouble codes.

The Engineering Solution

This complete ignition refresh package pairs heavy-duty coil-on-plug assemblies with premium fine-wire iridium spark plugs. The ignition coils feature high-purity electrolytic copper windings and heat-resistant epoxy encapsulation to prevent voltage tracking and insulation crack failures. The high-melting-point iridium core plugs ensure stable spark kernel generation, reduced voltage demand, and consistent flame front propagation across the entire RPM band.

Technical Specifications

Compatibility

• 2017-2020 Audi A4 (2.0L L4 Turbo / B9)
• 2017-2020 Audi A4 Quattro (2.0L L4 Turbo / B9)
• 2017-2020 Audi A4 allroad (2.0L L4 Turbo / B9)

The Audi Precision Standard

Engineered to match strict Bosch/Motronic engine management electrical tolerances, this kit delivers OEM-level dwell response without triggering Check Engine Lights (CEL) or parasitic electrical interference, ensuring smooth idle and crisp boost delivery.