Walker 921-2110 Ignition Coil

Walker ThunderSpark Ignition Coil 921-2110

Walker ThunderSpark 921-2110 is an ignition coil for a wide range of Audi and Volkswagen applications from 2004 through 2020. It is listed for single-coil and ThunderSpark configurations, with fitment that spans popular turbocharged and performance-oriented models.

Key Features

• Ignition coil for Audi and Volkswagen vehicles
• Walker ThunderSpark product line
• Fits multiple engine-management configurations, including Single Coil and ThunderSpark notes
• Direct fitment coverage across A3, A4, A5, Q5, TT, GTI, Jetta, Passat, Tiguan, and related models
• Part number 921-2110 for application matching

Fitment Coverage

• Fits 2020 Volkswagen Amarok, N/A, Single Coil
• Fits 2012-2014 Volkswagen Amarok, N/A, Single Coil
• Fits 2015-2019 Volkswagen Beetle, N/A, Single Coil
• Fits 2011 Volkswagen Beetle, N/A, Single Coil
• Fits 2015-2018 Audi Q3, N/A, ThunderSpark
• Fits 2015-2018 Audi Q3 Quattro, N/A, ThunderSpark
• Fits 2017-2018 Audi RS Q3, N/A, Single Coil
• Fits 2015-2018 Volkswagen Jetta, N/A, Single Coil
• Fits 2015-2018 Volkswagen Passat, N/A, Single Coil
• Fits 2017-2018 Volkswagen Tiguan Limited, N/A, ThunderSpark
• Fits 2010-2017 Audi A5 Quattro, N/A, ThunderSpark
• Fits 2011-2017 Audi Q5, N/A, ThunderSpark
• Fits 2009 Audi Q5, N/A, ThunderSpark
• Fits 2010-2017 Volkswagen CC, N/A, ThunderSpark
• Fits 2010-2017 Volkswagen Tiguan, N/A, ThunderSpark
• Fits 2005-2016 Audi A4, N/A, ThunderSpark
• Fits 2013-2016 Audi A4 allroad, N/A, w/ Eldor System; Single Coil
• Fits 2005-2016 Audi A4 Quattro, N/A, ThunderSpark
• Fits 2016 Audi A5, N/A, w/ Eldor System; Single Coil
• Fits 2013-2016 Audi allroad, N/A, ThunderSpark
• Fits 2016 Audi RS5, N/A, Single Coil
• Fits 2011 Audi RS5, N/A, Single Coil
• Fits 2007-2016 Volkswagen Eos, N/A, ThunderSpark
• Fits 2012-2015 Audi A6, N/A, ThunderSpark
• Fits 2013-2015 Audi A6 Quattro, N/A, ThunderSpark
• Fits 2013-2015 Audi RS5, N/A, ThunderSpark
• Fits 2009-2015 Audi TT Quattro, N/A, ThunderSpark
• Fits 2009-2015 Audi TTS Quattro, N/A, ThunderSpark
• Fits 2010-2014 Audi A5, N/A, ThunderSpark
• Fits 2013-2014 Audi Q3 Quattro, N/A, Single Coil
• Fits 2010-2014 Audi TT, N/A, Single Coil
• Fits 2007 Audi TT, N/A, Single Coil
• Fits 2014 Audi TT RS Quattro, N/A, Single Coil
• Fits 2011 Audi TT RS Quattro, N/A, Single Coil
• Fits 2012-2014 Volkswagen Beetle, N/A, ThunderSpark
• Fits 2006-2010 Volkswagen Beetle, N/A, ThunderSpark
• Fits 2010-2014 Volkswagen Golf, N/A, ThunderSpark
• Fits 2010-2014 Volkswagen GTI, N/A, ThunderSpark
• Fits 2006-2008 Volkswagen GTI, N/A, ThunderSpark
• Fits 2005-2014 Volkswagen Jetta, N/A, ThunderSpark
• Fits 2012-2014 Volkswagen Passat, N/A, ThunderSpark
• Fits 2010 Volkswagen Passat, N/A, ThunderSpark
• Fits 2006-2008 Volkswagen Passat, N/A, ThunderSpark
• Fits 2006-2013 Audi A3, N/A, ThunderSpark
• Fits 2009-2013 Audi A3 Quattro, N/A, ThunderSpark
• Fits 2012-2013 Audi TT RS Quattro, N/A, ThunderSpark
• Fits 2012-2013 Volkswagen Golf R, N/A, ThunderSpark
• Fits 2010-2013 Volkswagen Golf SportWagen, N/A, Single Coil
• Fits 2012 Audi R8, N/A, ThunderSpark
• Fits 2008-2012 Audi S3, N/A, Single Coil
• Fits 2004 Audi S3, N/A, Single Coil
• Fits 2012 Volkswagen Jetta, N/A, COP Ignition Coil; ThunderSpark
• Fits 2009-2012 Volkswagen Passat CC, N/A, Single Coil
• Fits 2010 Audi Q5, N/A, Single Coil
• Fits 2010 Volkswagen Beetle Cabrio, N/A, Single Coil
• Fits 2007-2010 Volkswagen Bora, N/A, ThunderSpark
• Fits 2008-2009 Audi TT, N/A, ThunderSpark
• Fits 2009 Volkswagen CC, N/A, To 09/02/2008; ThunderSpark
• Fits 2009 Volkswagen GTI, N/A, To Chassis/VIN 1K-9W 124419; ThunderSpark
• Fits 2009 Volkswagen Passat, N/A, To 09/02/2008; ThunderSpark
• Fits 2009 Volkswagen Tiguan, N/A, To Chassis/VIN 5N-9W047 644; ThunderSpark
• Fits 2004-2008 Audi A3 Quattro, N/A, Single Coil
• Fits 2007-2008 Audi RS4, N/A, ThunderSpark
• Fits 2005-2006 Volkswagen Bora, N/A, Single Coil
• Fits 2004-2005 Audi A3, N/A, Single Coil

What It Helps Address

• Misfire conditions related to a failing ignition coil
• Rough idle or inconsistent engine operation
• Hard starting caused by weak spark output
• Loss of power under load in Audi and Volkswagen engines
• Check engine light concerns tied to ignition performance

Installation Notes

Verify the year, make, model, and engine configuration before ordering, especially on applications with notes such as Single Coil, ThunderSpark, or Eldor System. Confirm VIN breakpoints where listed, including 2009 GTI, 2009 Tiguan, and 2009 Passat applications. Part number 921-2110 should be matched to the vehicle’s original coil style and connector layout before installation.

Quality Assurance

Walker ThunderSpark 921-2110 is cataloged for broad OE-style application coverage across Audi A3, A4, Q5, TT, and Volkswagen GTI, Jetta, Passat, and Tiguan platforms. This part cross-references no additional part numbers in the provided data.