APR Ignition Coil & Spark Plug Kit - Grey - 4-Cyl (4 Coils + 4 Plugs) - 2.0T EA113 / EA888.1 / EA888.2 - MS100209 / Z1003101 - APR (KT100042)

Refresh your ignition system in one shot with an APR Coils & Plugs Pack—matched high-output ignition coils and iridium spark plugs engineered to work together for a stronger, more consistent spark. Each kit 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.
This kit includes (per APR): 4 ignition coils (MS100209) + 4 iridium spark plugs (Z1003101).
Features:
APR ignition coils:
- 10% more energy output than stock
- Grey housing with APR logo
- Increased copper winding diameter with reduced resistance
- Increased neodyminum magnet size and strength
- Upgraded silicon steel shields for reduced energy loss and improved flux flow
- True upgrade, not just aesthetic
- Direct plug-and-play
- Batch tested to over 73 hours or 15,768,000 coil firings
- 1 year unlimited-mile direct-replacement warranty
APR Iridium Pro spark plugs:
- Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Denso 27, and NGK 9)
- 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum.
- Designed for high performance / tuned vehicle applications
- Projected insulator design
- Lower required supplied voltage
- Cooler operating temperature than stock plugs
- Optimized electrode design for hard to ignite fuels, such as ethanol
- Resists preignition better than stock plugs
- Perfect for upgraded APR vehicles
ENGINEERED AS A SYSTEM: This package pairs APR high-output ignition coils with APR Iridium Pro spark plugs selected for your 4-cylinder application to deliver a stronger, more consistent spark and a complete ignition refresh in one box.
ENERGY OUTPUTS: APR ignition coils increase energy output by up to 10% over stock to help provide a stronger and more consistent spark. Iridium electrodes require less voltage to fire and support stable combustion as cylinder pressures increase.
A DIRECT-FIT UPGRADE: Direct plug-and-play coil replacement plus direct-fit iridium spark plugs—no wiring, coding, or tuning changes required. Always verify spark plug size, reach, gap, and heat range before installation.
HIGH-TEMP DURABILITY: Coils are engineered with upgraded internal components and batch-tested for reliability. Spark plugs feature an iridium electrode and copper core construction for efficient heat dissipation; heat range 9 is designed to support consistent performance in high-heat and high-load conditions.
COMPATIBILITY: Configured for the engine family listed above using spark plug heat range 9. Spark plug OEM cross-reference: 06H905601A, 06Q905601E, 101905631G. Ignition Coil direct replacement for OEM stock part numbers 06D905115A/C/D/F/G/K, 06E905115A/B/C/D/E/F/G, 06F905115C/E/F, 06H905611, 06H905115/B, 06L905110B, 07K905715D/E/F/G. Always confirm fitment by application guide and visually confirm connector/boot style before installation.
Note from APR: If your factory ignition coils look physically different, other than color, these upgrades are not compatible.
Vehicle compatibility (per APR): APR's fitment lookup for this kit lists Audi, Volkswagen models: A3, A4, A4 Quattro, A5, A6, Beetle, CC, Eos, Golf R, GTI, Jetta, Passat, Q5, S3, Tiguan, TT.
- Brand: APR
- UPC: 090127979419