HomeIgnition > Ignition CoilWalker 921-2305 Ignition Coil
Part #: 921-2305

Walker 921-2305 Ignition Coil

ThunderSpark
⚙️ 9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦ThunderSpark
🚗Fitment: Audi, RS7, S6, S7, and S8
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Reliable Ignition Coil for Audi RS7, S6, S7, and S8

The Walker ThunderSpark 921-2305 ignition coil is designed to deliver consistent ignition performance for select Audi models. Engineered to meet the specific requirements of the Audi RS7, S6, S7, and S8, this ignition coil ensures proper spark delivery for efficient engine operation.

  • Compatible with Audi RS7, S6, S7, and S8 models
  • Walker part number 921-2305 for precise identification
  • Part of the ThunderSpark product line focused on ignition components
  • Designed to maintain optimal spark energy and engine performance
  • Direct replacement ignition coil for reliable fit and function

About the Walker ThunderSpark Ignition Coil Line

The ThunderSpark line by Walker specializes in ignition system components engineered to meet OEM specifications. This product line emphasizes durability and consistent spark delivery, which is critical for maintaining engine efficiency and reducing misfires. The 921-2305 ignition coil is part of this line, tailored to fit specific Audi performance models, ensuring compatibility and reliable operation.

Product Details and Functionality

The Walker 921-2305 ignition coil converts the battery's low voltage to the high voltage needed to create an electric spark in the spark plugs. This process is essential for igniting the air-fuel mixture in the engine cylinders. Designed for Audi RS7, S6, S7, and S8 vehicles, this ignition coil supports smooth engine starts, consistent power delivery, and helps maintain fuel efficiency by ensuring proper combustion.

Common Issues Addressed by This Ignition Coil

  • Engine misfires or rough idling in Audi RS7, S6, S7, and S8
  • Difficulty starting the engine or intermittent stalling
  • Reduced fuel efficiency due to incomplete combustion
  • Check engine light triggered by ignition system faults
  • Loss of engine power or hesitation during acceleration

Installation Notes and Tips

When replacing the ignition coil 921-2305 on Audi RS7, S6, S7, or S8 models, ensure the engine is cool before beginning installation. Disconnect the battery to prevent electrical shorts. Carefully remove the old ignition coil and inspect the spark plug boots and wiring harness for damage. Install the new coil securely, making sure all electrical connections are tight to maintain proper function.

Quality Assurance and Warranty

Walker ignition coils, including the ThunderSpark 921-2305, are manufactured to meet industry standards for durability and performance. While specific warranty details are not provided here, Walker products typically undergo rigorous quality control to ensure reliability in demanding automotive applications.

This part fits 9 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2018AudiRS74.0LV8N/AThunderSpark
2018AudiS84.0LV8N/AThunderSpark
2017AudiRS74.0LV8N/AThunderSpark
2017AudiS84.0LV8N/AThunderSpark
2016AudiRS74.0LV8N/AThunderSpark
2016AudiS64.0LV8N/ATo 07/27/2015; ThunderSpark
2016AudiS74.0LV8N/ATo 07/27/2015; ThunderSpark
2016AudiS84.0LV8N/AThunderSpark
2015AudiRS74.0LV8N/AFrom 06/16/2014; ThunderSpark

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.