TEMSONE Ignition Coil & Spark Plug Set (Set of 4) — 2.0L Hyundai/Kia 2016–2021, OEM Fit, Restores Spark

TEMSONE UF816 is a four-piece ignition coil pack and spark plug set engineered to restore reliable spark delivery for 2.0L Hyundai and Kia engines from 2016–2021.

If your Elantra, Kona, Sonata Hybrid, Veloster, Forte, Optima Hybrid or Soul equipped with a 2.0L powerplant shows misfires, rough idle, or a check-engine light related to ignition faults, this kit replaces worn coils and plugs with parts that match factory fitment and common OEM reference numbers (27300-2E601, 49137, GN10877). TEMSONE builds these coils with copper windings and high-insulation epoxy to resist heat and moisture, and each plug/coil pair is intended to improve ignition stability and drivability without complex modifications.

How will this set affect engine performance and drivability?

Replacing failing coils and fouled plugs can reduce misfires, smooth idle, and improve throttle response. The TEMSONE UF816 set targets ignition-related symptoms rather than broader engine problems like fuel delivery or compression loss.

• Restores consistent spark timing across cylinders
• Reduces stalling, surging, and hesitation on acceleration
• Helps clear ignition-related diagnostic trouble codes
• Improves cold starts and steady idle behaviour

Which vehicles and part numbers are compatible with this kit?

This kit is made for Hyundai and Kia models fitted with 2.0L engines from the specified years; check your vehicle’s year and engine code before ordering. TEMSONE lists common OEM replacement numbers so you can confirm compatibility against your existing parts.

• Hyundai: 2017–2020 Elantra 2.0L, 2018–2021 Kona 2.0L, 2016–2019 Sonata Hybrid 2.0L, 2019–2021 Veloster 2.0L
• Kia: 2018–2020 Forte 2.0L, 2017–2020 Optima Hybrid 2.0L, 2020 Soul 2.0L
• OEM references: 27300-2E601, 49137, GN10877 (also UF816/UF-816)

What materials and construction features improve durability?

TEMSONE coils use copper windings for efficient electrical flow and high-insulation epoxy to seal the internals against moisture and heat. These construction choices increase resistance to thermal breakdown and reduce premature failure modes common with cheaper coil designs.

• Copper wire for stable conductivity and reliable spark energy
• High-insulation epoxy resin to prevent moisture intrusion
• Heat-resistant assembly to tolerate under-hood temperatures
• Precision fit to OEM mounting points for secure installation

How easy is installation and what problems will this fix?

Installation is a straightforward bolt-and-plug swap on compatible 2.0L engines; basic hand tools and routine safety precautions are typically all that’s needed. This kit targets ignition-related issues, not mechanical failures like worn valves or fuel-system faults.

• Direct-fit replacement: no modification required
• Typical fixes: misfires, spark plug fouling, rough idle, check-engine codes
• Professional or DIY install recommended for routine maintenance

Who is this for: The TEMSONE UF816 set is ideal for owners and mechanics working on Hyundai and Kia 2.0L vehicles from 2016–2021 who want a complete, direct-replacement coil-and-plug kit that addresses ignition-related drivability issues. Choose this kit if you need OEM-referenced parts (27300-2E601 / 49137 / GN10877), prefer coils built with copper windings and epoxy sealing, and want a simple swap to restore reliable engine spark and smoother operation.