Walker 921-2016 Ignition Coil

Ignition Coil for Audi and Volkswagen Applications

Walker ThunderSpark 921-2016 is an ignition coil built for direct replacement use on select Audi and Volkswagen vehicles. It supports consistent spark delivery for engines that use a coil-on-plug or single-coil setup, including several ThunderSpark applications across Audi A4, A6 Quattro, TT, and Volkswagen Golf, Jetta, Passat, and Beetle models.

Key Features

• Walker ThunderSpark ignition coil, part number 921-2016
• Direct-fit replacement for select Audi and Volkswagen ignition systems
• Applications include coil-on-plug and single-coil configurations
• Fits multiple 1998-2008 Audi and Volkswagen models
• Built for vehicles that require stable ignition output and reliable spark transfer

Product Details

The ThunderSpark line from Walker covers ignition components for import vehicles that need accurate fitment and dependable electrical performance. Part number 921-2016 is listed for a wide range of Audi and Volkswagen models, including 2000-2004 Audi A6 Quattro, 2000-2001 Volkswagen Golf, and 2000-2001 Volkswagen Jetta. It also covers additional Audi A8, S6, S8, TT, RS6, A4, and A3 applications, along with Volkswagen Beetle, Passat, and Sharan fitments. If you are replacing a worn ignition coil on an Audi A6 Quattro or Volkswagen Beetle, 921-2016 provides a targeted replacement option.

Common Issues This Part Addresses

• Engine misfire under load
• Rough idle or uneven acceleration
• Hard starting caused by weak spark output
• Intermittent ignition performance on coil-on-plug systems
• Check engine light related to ignition coil failure

Installation Notes and Tips

Verify the engine code, connector style, and fitment notes before installation. Some applications are listed as ThunderSpark, while others specify single coil or coil-on-plug with a plastic connector retainer. Confirm the vehicle year and model exactly, especially for 2001 Volkswagen Beetle applications noted to fit only through chassis/VIN 1C-Y-499-999. Part number 921-2016 should be matched to the original coil configuration before replacement.

Quality Assurance

Walker ThunderSpark is the product line identified for this ignition coil, and the listed fitment data supports application-specific replacement selection. This part cross-references no additional part numbers in the provided data.