Hyundai i30N, Kia Stinger 2.0T & Genesis G70 — Theta II Performance Ignition Coils
The Hyundai / Kia / Genesis Theta II family — 2.0 T-GDI G4KH and 2.4 GDI G4KJ — powers the halo cars of the group's performance lineup: the Hyundai i30N (280 hp), the Kia Stinger 2.0T, and the Genesis G70 2.0T. All of them share the same coil-on-plug assembly, and all of them lean hard on it — the i30N runs 20+ psi from the factory and OE coils are a known weak point once N-Mode and overboost get involved. MTP-1008 is a direct plug & play replacement engineered in the UK, delivering 12% more spark energy from a neodymium-core primary — a straight swap with better heat handling and cleaner ignition under sustained boost.
- Years
- 2010 – 2024
- Chassis
- FK · BK · CK · JF · TL · QL · UM
- Engine code
- G4KH · G4KJ
- Engine
- 2.0 T-GDI turbo · 2.4 GDI NA
- Power
- 185 – 290 bhp
- Coils needed
- 4 × Mantis MTP-1008 - Hyundai / Kia GDI T-GDI Performance Ignition Coil (i30 N, Stinger)
Set includes all 4 coils. Only need one? Choose "Just 1 coil" if you're replacing a single failed unit.
Signs your Theta II 2.0 T-GDI & 2.4 GDI needs new coils
- Misfire codes P0301–P0304 on Torque Pro, N-Mode diagnostics or a generic OBDII scanner
- Rough idle from cold — especially noticeable on i30N and Stinger 2.0T
- Loss of overboost / top-end pull above 5,500 rpm in N-Mode
- Fuel trims drifting without an intake or injector fault
- Intermittent CEL clearing after a drive cycle
- Stumble or flat spot on WOT hard shifts — especially on tuned i30N / Stinger 2.0T
Installation notes
Direct plug & play — no coding, no dealer trip, no GDS work required. Identical fitment across every Theta II 2.0 T-GDI and 2.4 GDI variant. Access is straightforward on all applications: pop the engine cover, unclip the coil harness connectors, 10mm bolt out, swap coils in, bolt back in — 10 Nm torque. Always replace as a set of 4 for even spark distribution; mixed-age coils cause the ECU to pull timing to compensate, which negates the performance benefit of the new units. Total install time: 20–30 minutes.
Common questions
Will this fit my i30N / Stinger 2.0T / G70 without coding?
Yes. Direct plug & play replacement — the ECU reads MTP-1008 identically to the OE Hyundai / Kia coil (27300-2GGA0). No coding, no GDS, no dealer visit required on any Theta II 2.0 T-GDI or 2.4 GDI variant.
Do I really need all 4, or can I just replace one?
We strongly recommend replacing all 4 as a set. If one coil has failed, the others have seen identical heat cycles and boost hours — they're likely close behind. Mixed-age coils cause uneven spark, and the ECU compensates by pulling timing, which loses the performance benefit of the new coils. That said, if you just need to clear a specific misfire in a hurry, a single MTP-1008 will work as an interim fix.
Will this hold up on a tuned i30N or Stinger 2.0T?
Yes — tuned Theta II is where MTP-1008 really earns its place. Stage 1 / Stage 2 tunes on the i30N and Stinger 2.0T push cylinder pressures noticeably beyond OE spec, and worn OE coils start to break down under sustained overboost long before they'd fail on a stock car. The 12% spark-energy uplift and neodymium primary core give you the headroom to hold ignition cleanly. Same physical fit, same connector, same wiring — a straight swap.
This coil also fits
Full application list — Hyundai / Kia / Genesis Theta II:
- Hyundai i30N 2.0T FK (2017+) — 250–280 hp
- Hyundai i30N Project C (2019+, 275 hp)
- Hyundai i30 Fastback N (2018+)
- Hyundai Veloster N 2.0T (2019+, 275 hp)
- Hyundai Sonata Sport 2.0T (2011–2019)
- Hyundai Santa Fe Sport 2.0T (2013–2018)
- Hyundai Tucson 2.0T (2016–2020)
- Kia Stinger 2.0T / GT-Line (2017–2023) — 255 hp
- Kia Optima 2.0T / SX (2011–2020)
- Kia Sportage 2.0T SX (2017+)
- Kia Sorento 2.0T (2018+)
- Genesis G70 2.0T (2017+) — 252 hp
- Genesis G80 Sport 2.0T (2018–2020)
- Genesis Coupe 2.0T BK (2010–2016)
- Plus 2.4 GDI variants — Hyundai Sonata, Santa Fe, Tucson; Kia Optima, Sportage, Sorento
Note on quantity: All Theta II 2.0 T-GDI and 2.4 GDI variants are 4-cylinder — 4 coils per engine. Does NOT cover Gamma 1.6 T-GDI (i20N, i30N Line 1.6T, Kona N-Line, Veloster Turbo 1.6) or Lambda II 3.3T V6 BiTurbo (Stinger GT, G80 Sport 3.3T) — those use different coil families.
OE cross-references
These are the original manufacturer part numbers this coil directly replaces. Check the number stamped on your existing coil against this list before ordering to confirm your fitment.
Ready to fit your Hyundai / Kia / Genesis Theta II 2.0 T-GDI & 2.4 GDI?
Full set · £119.96 · UK dispatch · Direct plug & play