APR EA888.1/2/EA837/EA113 Iridium Pro Spark Plug - Heat Range 9 - 14mm x 19mm x 16mm - SINGLE

Refresh your ignition system in one shot with APR Iridium Pro Spark Plugs and pair with APR Ignition Coils – engineered to work together for a stronger, more consistent spark. Each is a direct-fit upgrade designed to support smoother idle, sharper throttle response, and reliable performance under heat and load—whether you’re stock or running higher boost and power upgrades. 14x19x16mm - Heat Range 9 Always check sizes and heat range specs before installing.

• 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum.
• Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Denso 27, and NGK 9)
• Optimized electrode design for hard to ignite fuels, such as ethanol
• Designed for high performance / tuned vehicle applications
• Cooler operating temperature than stock plugs
• Resists preignition better than stock plugs
• An excellent match for APR ignition coils
• Stronger than copper and platinum
• Perfect for upgraded APR vehicles
• Lower required supplied voltage
• Projected insulator design
• Thread diameter: 14mm
• Install Torque: 25 Nm
• Thread reach: 19mm
• Seat Type: Gasket
• Made in the EU
• Hexagon: 16mm

Refresh your ignition system with the APR Iridium Pro Spark Plug, part number aprZ1003101. Designed for high-performance and tuned applications, this heat range 9 spark plug supports a stronger, more consistent spark in demanding conditions. Its optimized electrode design helps ignite challenging fuels, including ethanol, while the projected insulator design promotes dependable performance under heat and load. The cooler operating temperature and improved resistance to preignition make it a practical upgrade for stock vehicles, higher-boost setups, and upgraded APR applications.
The APR Iridium Pro Spark Plug is engineered to pair with APR ignition coils and requires less supplied voltage than many conventional plug designs. Its iridium construction offers greater strength and a higher melting point than copper, platinum, and silver, helping maintain reliable operation during spirited driving and elevated cylinder pressures. The plug uses a 14mm thread diameter, 19mm thread reach, gasket seat, and 16mm hexagon. Recommended installation torque is 25 Nm. Always verify the correct plug size, heat range, gap, and application specifications before installation.
This single APR spark plug fits select Audi applications, including the 2010 Audi A3, A4, A4 Quattro, A5 Quattro, A6 Quattro, S4, S5, and TT Quattro. Heat range 9 is comparable to Bosch 3, Brisk 10, Denso 27, and NGK 9. Made in the EU, the APR Iridium Pro Spark Plug is a direct-fit ignition upgrade for drivers seeking smoother idle quality, sharper throttle response, and consistent spark performance in demanding street, track, and modified vehicle applications.

Features:

• Heat range 9 spark plug for high-performance and tuned vehicle applications

• Optimized electrode design for hard-to-ignite fuels, including ethanol

• Iridium construction with greater strength and melting-point performance than copper and platinum

• Cooler operating temperature than stock plugs

• Improved resistance to preignition compared with stock plugs

• Designed to pair with APR ignition coils

• Lower required supplied voltage

• Projected insulator design

• 14mm thread diameter with 19mm thread reach

• 16mm hexagon and gasket seat

• Recommended installation torque of 25 Nm

• Made in the EU

Fitment:
Audi A3 Base 2006
Audi A3 Base 2007
Audi A3 Base 2008
Audi A3 Base 2009
Audi A3 Base 2010
Audi A3 Base 2011
Audi A3 Base 2012
Audi A3 Base 2013
Audi A3 TDI 2010
Audi A3 TDI 2011
Audi A3 TDI 2012
Audi A3 TDI 2013
Audi A3 Quattro Base 2009
Audi A3 Quattro Base 2010
Audi A3 Quattro Base 2011
Audi A3 Quattro Base 2012
Audi A3 Quattro Base 2013
Audi A4 Base 2005
Audi A4 Base 2006
Audi A4 Base 2007
Audi A4 Base 2008
Audi A4 Base 2009
Audi A4 Base 2010
Audi A4 Base 2011
Audi A4 Base 2012
Audi A4 Base 2013
Audi A4 Base 2014
Audi A4 Cabriolet 2007
Audi A4 Cabriolet 2008
Audi A4 Cabriolet 2009
Audi A4 Premium 2015
Audi A4 Premium 2016
Audi A4 Premium Plus 2015
Audi A4 Premium Plus 2016
Audi A4 Prestige 2015
Audi A4 Quattro Avant 2005
Audi A4 Quattro Avant 2006
Audi A4 Quattro Avant 2007
Audi A4 Quattro Avant 2008
Audi A4 Quattro Avant 2009
Audi A4 Quattro Avant 2010
Audi A4 Quattro Avant 2011
Audi A4 Quattro Avant 2012
Audi A4 Quattro Base 2005
Audi A4 Quattro Base 2006
Audi A4 Quattro Base 2007
Audi A4 Quattro Base 2008
Audi A4 Quattro Base 2009
Audi A4 Quattro Base 2010
Audi A4 Quattro Base 2011
Audi A4 Quattro Base 2012
Audi A4 Quattro Base 2013
Audi A4 Quattro Base 2014
Audi A4 Quattro Cabriolet 2007
Audi A4 Quattro Cabriolet 2008
Audi A4 Quattro Cabriolet 2009
Audi A4 Quattro Premium 2015
Audi A4 Quattro Premium 2016
Audi A4 Quattro Premium Plus 2015
Audi A4 Quattro Premium Plus 2016
Audi A4 Quattro Prestige 2015
Audi A5 Quattro Base 2010
Audi A5 Quattro Base 2011
Audi A5 Quattro Base 2012
Audi A5 Quattro Base 2013
Audi A5 Quattro Base 2014
Audi A5 Quattro Cabriolet 2010
Audi A5 Quattro Cabriolet 2011
Audi A5 Quattro Cabriolet 2012
Audi A5 Quattro Cabriolet 2013
Audi A5 Quattro Cabriolet 2014
Audi A5 Quattro Premium 2015
Audi A5 Quattro Premium 2016
Audi A5 Quattro Premium Plus 2015
Audi A5 Quattro Premium Plus 2016
Audi A5 Quattro Prestige 2015
Audi A5 Quattro Sport 2017
Audi A6 Premium 2012
Audi A6 Premium 2013
Audi A6 Premium 2014
Audi A6 Premium 2015
Audi A6 Premium 2016
Audi A6 Premium 2017
Audi A6 Premium Plus 2012
Audi A6 Premium Plus 2013
Audi A6 Premium Plus 2014
Audi A6 Premium Plus 2015
Audi A6 Premium Plus 2016
Audi A6 Premium Plus 2017
Audi A6 Quattro Avant 2009
Audi A6 Quattro Avant 2010
Audi A6 Quattro Avant 2011
Audi A6 Quattro Base 2009
Audi A6 Quattro Base 2010
Audi A6 Quattro Base 2011
Audi A6 Quattro Competition 2017
Audi A6 Quattro Premium 2012
Audi A6 Quattro Premium 2013
Audi A6 Quattro Premium 2014
Audi A6 Quattro Premium 2015
Audi A6 Quattro Premium 2018
Audi A6 Quattro Premium Plus 2012
Audi A6 Quattro Premium Plus 2013
Audi A6 Quattro Premium Plus 2014
Audi A6 Quattro Premium Plus 2015
Audi A6 Quattro Premium Plus 2016
Audi A6 Quattro Premium Plus 2017
Audi A6 Quattro Premium Plus 2018
Audi A6 Quattro Prestige 2012
Audi A6 Quattro Prestige 2013
Audi A6 Quattro Prestige 2014
Audi A6 Quattro Prestige 2015
Audi A6 Quattro Prestige 2016
Audi A6 Quattro Prestige 2017
Audi A6 Quattro Prestige 2018
Audi A6 Quattro Sport 2018
Audi A6 Quattro TDI Premium Plus 2014
Audi A6 Quattro TDI Premium Plus 2015
Audi A6 Quattro TDI Premium Plus 2016
Audi A6 Quattro TDI Prestige 2014
Audi A6 Quattro TDI Prestige 2015
Audi A6 Quattro TDI Prestige 2016
Audi A7 Quattro Base 2012
Audi A7 Quattro Base 2013
Audi A7 Quattro Competition 2017
Audi A7 Quattro Premium Plus 2014
Audi A7 Quattro Premium Plus 2015
Audi A7 Quattro Premium Plus 2016
Audi A7 Quattro Premium Plus 2017
Audi A7 Quattro Premium Plus 2018
Audi A7 Quattro Prestige 2014
Audi A7 Quattro Prestige 2015
Audi A7 Quattro Prestige 2016
Audi A7 Quattro Prestige 2017
Audi A7 Quattro Prestige 2018
Audi A7 Quattro TDI Premium Plus 2014
Audi A7 Quattro TDI Premium Plus 2015
Audi A7 Quattro TDI Premium Plus 2016
Audi A7 Quattro TDI Prestige 2014
Audi A7 Quattro TDI Prestige 2015
Audi A7 Quattro TDI Prestige 2016
Audi A8 Quattro Base 2013
Audi A8 Quattro Base 2014
Audi A8 Quattro Base 2015
Audi A8 Quattro L 2013
Audi A8 Quattro L 2014
Audi A8 Quattro L 2015
Audi A8 Quattro L 2016
Audi A8 Quattro L 2017
Audi A8 Quattro L 2018
Audi A8 Quattro L TDI 2014
Audi A8 Quattro L TDI 2015
Audi A8 Quattro L TDI 2016
Audi allroad Premium 2013
Audi allroad Premium 2014
Audi allroad Premium 2015
Audi allroad Premium 2016
Audi allroad Premium Plus 2013
Audi allroad Premium Plus 2014
Audi allroad Premium Plus 2015
Audi allroad Premium Plus 2016
Audi allroad Prestige 2013
Audi allroad Prestige 2014
Audi allroad Prestige 2015
Audi Q3 Premium 2017
Audi Q3 Premium 2018
Audi Q3 Premium Plus 2015
Audi Q3 Premium Plus 2016
Audi Q3 Premium Plus 2017
Audi Q3 Premium Plus 2018
Audi Q3 Prestige 2015
Audi Q3 Prestige 2016
Audi Q3 Prestige 2017
Audi Q3 Quattro Premium 2017
Audi Q3 Quattro Premium 2018
Audi Q3 Quattro Premium Plus 2015
Audi Q3 Quattro Premium Plus 2016
Audi Q3 Quattro Premium Plus 2017
Audi Q3 Quattro Premium Plus 2018
Audi Q3 Quattro Prestige 2015
Audi Q3 Quattro Prestige 2016
Audi Q3 Quattro Prestige 2017
Audi Q5 Hybrid Prestige 2013
Audi Q5 Hybrid Prestige 2014
Audi Q5 Hybrid Prestige 2015
Audi Q5 Hybrid Prestige 2016
Audi Q5 Premium 2011
Audi Q5 Premium 2012
Audi Q5 Premium 2013
Audi Q5 Premium 2014
Audi Q5 Premium 2015
Audi Q5 Premium 2016
Audi Q5 Premium 2017
Audi Q5 Premium Plus 2011
Audi Q5 Premium Plus 2012
Audi Q5 Premium Plus 2013
Audi Q5 Premium Plus 2014
Audi Q5 Premium Plus 2015
Audi Q5 Premium Plus 2016
Audi Q5 Premium Plus 2017
Audi Q5 Prestige 2013
Audi Q5 Prestige 2014
Audi Q5 Prestige 2015
Audi Q5 Prestige 2016
Audi Q5 Prestige 2017
Audi Q5 TDI Premium Plus 2014
Audi Q5 TDI Premium Plus 2015
Audi Q5 TDI Premium Plus 2016
Audi Q5 TDI Premium Plus S-Line 2016
Audi Q5 TDI Prestige 2014
Audi Q5 TDI Prestige 2015
Audi Q5 TDI Prestige 2016
Audi Q5 TDI Prestige S-Line 2016
Audi Q7 Premium 2011
Audi Q7 Premium 2012
Audi Q7 Premium 2013
Audi Q7 Premium 2014
Audi Q7 Premium 2015
Audi Q7 Premium 2017
Audi Q7 Premium 2018
Audi Q7 Premium 2019
Audi Q7 Premium Plus 2011
Audi Q7 Premium Plus 2012
Audi Q7 Premium Plus 2013
Audi Q7 Premium Plus 2014
Audi Q7 Premium Plus 2015
Audi Q7 Premium Plus 2017
Audi Q7 Premium Plus 2018
Audi Q7 Premium Plus 2019
Audi Q7 Prestige 2011
Audi Q7 Prestige 2012
Audi Q7 Prestige 2013
Audi Q7 Prestige 2014
Audi Q7 Prestige 2015
Audi Q7 Prestige 2017
Audi Q7 Prestige 2018
Audi Q7 Prestige 2019
Audi Q7 TDI Premium 2011
Audi Q7 TDI Premium 2012
Audi Q7 TDI Premium 2013
Audi Q7 TDI Premium 2014
Audi Q7 TDI Premium 2015
Audi Q7 TDI Premium Plus 2011
Audi Q7 TDI Premium Plus 2012
Audi Q7 TDI Premium Plus 2013
Audi Q7 TDI Premium Plus 2014
Audi Q7 TDI Premium Plus 2015
Audi Q7 TDI Prestige 2011
Audi Q7 TDI Prestige 2012
Audi Q7 TDI Prestige 2013
Audi Q7 TDI Prestige 2014
Audi Q7 TDI Prestige 2015
Audi S4 Base 2010
Audi S4 Base 2011
Audi S4 Base 2012
Audi S4 Base 2013
Audi S4 Premium Plus 2014
Audi S4 Premium Plus 2015
Audi S4 Premium Plus 2016
Audi S4 Prestige 2014
Audi S4 Prestige 2015
Audi S4 Prestige 2016
Audi S5 Base 2013
Audi S5 Base 2017
Audi S5 Cabriolet 2010
Audi S5 Cabriolet 2011
Audi S5 Cabriolet 2012
Audi S5 Cabriolet 2013
Audi S5 Premium Plus 2014
Audi S5 Premium Plus 2015
Audi S5 Premium Plus 2016
Audi S5 Prestige 2014
Audi S5 Prestige 2015
Audi S5 Prestige 2016
Audi SQ5 Premium Plus 2014
Audi SQ5 Premium Plus 2015
Audi SQ5 Premium Plus 2016
Audi SQ5 Premium Plus 2017
Audi SQ5 Prestige 2014
Audi SQ5 Prestige 2015
Audi SQ5 Prestige 2016
Audi SQ5 Prestige 2017
Audi TT Base 2008
Audi TT Base 2009
Audi TT Quattro Base 2009
Audi TT Quattro Base 2010
Audi TT Quattro Base 2011
Audi TT Quattro Base 2014
Audi TT Quattro Base 2015
Audi TT Quattro Premium Plus 2012
Audi TT Quattro Premium Plus 2013
Audi TT Quattro Prestige 2012
Audi TT Quattro Prestige 2013
Audi TTS Quattro Base 2009
Audi TTS Quattro Base 2010
Audi TTS Quattro Base 2011
Audi TTS Quattro Base 2012
Audi TTS Quattro Base 2013
Audi TTS Quattro Base 2014
Audi TTS Quattro Base 2015
Porsche Cayenne Diesel 2013
Porsche Cayenne Diesel 2014
Porsche Cayenne Diesel 2015
Porsche Cayenne Diesel 2016
Porsche Cayenne Diesel Platinum Edition 2014
Porsche Cayenne S E-Hybrid 2015
Porsche Cayenne S E-Hybrid 2016
Porsche Cayenne S E-Hybrid 2017
Porsche Cayenne S E-Hybrid 2018
Porsche Cayenne S E-Hybrid Platinum Edition 2017
Porsche Cayenne S E-Hybrid Platinum Edition 2018
Porsche Cayenne S Hybrid 2011
Porsche Cayenne S Hybrid 2012
Porsche Cayenne S Hybrid 2013
Porsche Cayenne S Hybrid 2014
Porsche Panamera 4S 2014
Porsche Panamera 4S 2015
Porsche Panamera 4S Executive 2014
Porsche Panamera 4S Executive 2015
Porsche Panamera S 2014
Porsche Panamera S 2015
Porsche Panamera S E-Hybrid 2014
Porsche Panamera S E-Hybrid 2015
Porsche Panamera S Hybrid 2012
Porsche Panamera S Hybrid 2013
Volkswagen Beetle Turbo 2012
Volkswagen CC Executive 2014
Volkswagen CC Executive 2015
Volkswagen CC Lux 2012
Volkswagen CC Lux 2013
Volkswagen CC Lux Limited 2012
Volkswagen CC Lux Plus 2012
Volkswagen CC Luxury 2009
Volkswagen CC Luxury 2010
Volkswagen CC Luxury 2011
Volkswagen CC R-Line 2011
Volkswagen CC R-Line 2012
Volkswagen CC R-Line 2013
Volkswagen CC R-Line 2014
Volkswagen CC R-Line 2015
Volkswagen CC R-Line 2016
Volkswagen CC R-Line Executive 2016
Volkswagen CC R-Line Executive 2017
Volkswagen CC Sport 2009
Volkswagen CC Sport 2010
Volkswagen CC Sport 2011
Volkswagen CC Sport 2012
Volkswagen CC Sport 2013
Volkswagen CC Sport 2014
Volkswagen CC Sport 2015
Volkswagen CC Sport 2016
Volkswagen CC Sport 2017
Volkswagen CC Sport Plus 2013
Volkswagen CC Trend 2016
Volkswagen Eos 2.0T 2007
Volkswagen Eos Base 2007
Volkswagen Eos Executive 2012
Volkswagen Eos Executive 2013
Volkswagen Eos Executive 2014
Volkswagen Eos Executive 2015
Volkswagen Eos Final Edition 2015
Volkswagen Eos Komfort 2008
Volkswagen Eos Komfort 2009
Volkswagen Eos Komfort 2010
Volkswagen Eos Komfort 2011
Volkswagen Eos Komfort 2012
Volkswagen Eos Komfort 2013
Volkswagen Eos Komfort 2014
Volkswagen Eos Komfort 2015
Volkswagen Eos Komfort 2016
Volkswagen Eos Lux 2008
Volkswagen Eos Lux 2009
Volkswagen Eos Lux 2010
Volkswagen Eos Lux 2011
Volkswagen Eos Lux 2012
Volkswagen Eos Lux 2013
Volkswagen Eos Sport 2013
Volkswagen Eos Sport 2014
Volkswagen Eos Turbo 2008
Volkswagen Golf R Base 2012
Volkswagen Golf R Base 2013
Volkswagen GTI Base 2006
Volkswagen GTI Base 2007
Volkswagen GTI Base 2008
Volkswagen GTI Base 2009
Volkswagen GTI Base 2010
Volkswagen GTI Base 2011
Volkswagen GTI Base 2012
Volkswagen GTI Base 2013
Volkswagen GTI Driver's Edition 2014
Volkswagen GTI Fahrenheit 2007
Volkswagen GTI Wolfsburg Edition 2014
Volkswagen Jetta 2.0T 2006
Volkswagen Jetta 2.0T 2007
Volkswagen Jetta GLI 2006
Volkswagen Jetta GLI 2007
Volkswagen Jetta GLI 2008
Volkswagen Jetta GLI 2009
Volkswagen Jetta GLI 2012
Volkswagen Jetta GLI 2013
Volkswagen Jetta S 2012
Volkswagen Jetta S 2013
Volkswagen Jetta SEL 2009
Volkswagen Jetta TDI 2009
Volkswagen Jetta TDI 2010
Volkswagen Jetta TDI 2012
Volkswagen Jetta TDI 2013
Volkswagen Jetta TDI Cup Edition 2010
Volkswagen Jetta TDI Premium 2012
Volkswagen Jetta TDI Premium 2013
Volkswagen Jetta Wolfsburg Edition 2008
Volkswagen Jetta Wolfsburg Edition 2009
Volkswagen Jetta Wolfsburg Edition 2010
Volkswagen Passat 2.0T 2006
Volkswagen Passat 2.0T 2007
Volkswagen Passat Komfort 2008
Volkswagen Passat Komfort 2009
Volkswagen Passat Komfort 2010
Volkswagen Passat Lux 2008
Volkswagen Passat Turbo 2008
Volkswagen Passat Value Edition 2006
Volkswagen Passat Value Edition 2007
Volkswagen Passat Wolfsburg Edition 2007
Volkswagen Tiguan R-Line 2014
Volkswagen Tiguan R-Line 2015
Volkswagen Tiguan R-Line 2016
Volkswagen Tiguan S 2009
Volkswagen Tiguan S 2010
Volkswagen Tiguan S 2011
Volkswagen Tiguan S 2012
Volkswagen Tiguan S 2013
Volkswagen Tiguan S 2014
Volkswagen Tiguan S 2015
Volkswagen Tiguan S 2016
Volkswagen Tiguan S 2017
Volkswagen Tiguan SE 2009
Volkswagen Tiguan SE 2010
Volkswagen Tiguan SE 2011
Volkswagen Tiguan SE 2012
Volkswagen Tiguan SE 2013
Volkswagen Tiguan SE 2014
Volkswagen Tiguan SE 2015
Volkswagen Tiguan SE 2016
Volkswagen Tiguan SEL 2009
Volkswagen Tiguan SEL 2010
Volkswagen Tiguan SEL 2011
Volkswagen Tiguan SEL 2012
Volkswagen Tiguan SEL 2013
Volkswagen Tiguan SEL 2014
Volkswagen Tiguan SEL 2015
Volkswagen Tiguan SEL 2016
Volkswagen Tiguan SEL 2017
Volkswagen Tiguan Sport 2017
Volkswagen Tiguan Wolfsburg Edition 2010
Volkswagen Tiguan Wolfsburg Edition 2017
Volkswagen Tiguan Limited Base 2017
Volkswagen Tiguan Limited Base 2018