Walker 921-2300 Ignition Coil

Walker ThunderSpark Ignition Coil

Walker ThunderSpark ignition coil Part Number 921-2300 is a direct-fit ignition component for a wide range of Volkswagen and Audi applications. It is built for single-coil applications across turbocharged and non-turbo models listed below, including popular Golf, GTI, A4, Q5, and Tiguan fitments.

Key Features

• Walker ThunderSpark ignition coil for OE-style replacement use
• Fits single-coil applications on select Volkswagen and Audi vehicles
• Coverage includes 2014-2021 model years across multiple platforms
• Part Number 921-2300 for accurate catalog matching
• Fits applications with notes such as Hitachi, Eldor, Borg Warner, and ThunderSpark system references where listed

Fitment Details

• Fits 2016-2021 Volkswagen Golf, N/A, Single Coil
• Fits 2015-2021 Volkswagen GTI, N/A, Single Coil
• Fits 2020 Audi A4 allroad, N/A, To 01/30/2020; Single Coil
• Fits 2020 Audi A4 Quattro, N/A, To 01/30/2020; Single Coil
• Fits 2020 Audi A5 Quattro, N/A, To 01/30/2020; Single Coil
• Fits 2020 Audi A5 Sportback, N/A, To 01/30/2020; Single Coil
• Fits 2019-2020 Audi A6 Quattro, N/A, Vendor:HITACHI; Single Coil
• Fits 2020 Audi Q5 PHEV, N/A, To 12/30/2019; Single Coil
• Fits 2020 Audi Q7, N/A, To 01/30/2020; Single Coil
• Fits 2020 Volkswagen Atlas, N/A, To 12/16/2019; Single Coil
• Fits 2020 Volkswagen Atlas Cross Sport, N/A, To 12/16/2019; Single Coil
• Fits 2020 Volkswagen Jetta, N/A, To 12/29/2019; Single Coil
• Fits 2018-2020 Volkswagen Tiguan, N/A, Single Coil
• Fits 2017-2019 Audi A4 allroad, N/A, Single Coil
• Fits 2017-2019 Audi A4 Quattro, N/A, Single Coil
• Fits 2018-2019 Audi A5, N/A, w/ Hitachi System; Single Coil
• Fits 2018-2019 Audi A5 Quattro, N/A, Single Coil
• Fits 2018-2019 Audi A5 Sportback, N/A, Single Coil
• Fits 2019 Audi Q2 Quattro, N/A, w/ Eldor System; Single Coil
• Fits 2019 Audi Q5, N/A, To 10/14/2019; Single Coil
• Fits 2018-2019 Audi Q7, N/A, Single Coil
• Fits 2019 Volkswagen Atlas, N/A, Single Coil
• Fits 2016-2019 Volkswagen Beetle, N/A, Single Coil
• Fits 2017-2019 Volkswagen Golf Alltrack, N/A, Single Coil
• Fits 2016-2019 Volkswagen Golf SportWagen, N/A, Single Coil
• Fits 2016-2019 Volkswagen Jetta, N/A, Single Coil
• Fits 2019 Volkswagen Teramont, N/A, Single Coil
• Fits 2016-2018 Audi A1, N/A, Single Coil
• Fits 2017-2018 Audi A4, N/A, Single Coil
• Fits 2018 Audi A7 Quattro, N/A, Single Coil
• Fits 2018 Audi Q5, N/A, Single Coil
• Fits 2016-2018 Audi TT, N/A, Single Coil
• Fits 2018 Volkswagen Atlas, N/A, w/ Borg Warner System; Single Coil
• Fits 2017 Audi Q7, N/A, From 7/15/2017; Single Coil
• Fits 2016-2017 Volkswagen Passat, N/A, Single Coil
• Fits 2017 Volkswagen Polo, N/A, Single Coil
• Fits 2016 Audi A3, N/A, To 01/18/2016; ThunderSpark
• Fits 2016 Audi A6 Quattro, N/A, To 06/03/2015; ThunderSpark
• Fits 2015 Audi A3, N/A, ThunderSpark
• Fits 2015 Volkswagen Golf, N/A, ThunderSpark
• Fits 2014 Audi A3, N/A, Single Coil

What It Helps Address

• Engine misfire caused by a failing ignition coil
• Rough idle or inconsistent combustion at startup
• Loss of power under acceleration
• Check engine light related to ignition performance
• Hard starting tied to weak spark output

Installation Notes

Verify the vehicle’s engine code, ignition system type, and production date before ordering. This part number 921-2300 is listed for single-coil applications only, and several fitments include system-specific notes such as Hitachi, Eldor, Borg Warner, or ThunderSpark references. Confirm the exact Volkswagen Golf, GTI, Audi A4, or Audi Q5 application against the fitment notes before installation.

Quality Assurance

Walker ThunderSpark is the product line identified for this ignition coil application, and the catalog fitment is tied to specific OE-style system references where noted. Part Number 921-2300 is listed for direct vehicle matching across the supported Audi and Volkswagen applications.