UF651 Ignition Coil with Double Iridium Spark Plug Set of 4 - Direct

In this review the UF651 ignition coil with double iridium spark plug is assessed as a direct replacement kit for many 2011-2019 Kia and Hyundai 2.0L and 1.8L engines. The bottom line: this set is for owners who need a reliable, OE-level coil pack and long-life spark plugs to restore lost power and reduce misfires. The review highlights its durable materials and practical fitment notes, and explains why it is a good value option for shoppers who can confirm connector type and vehicle compatibility before ordering.

Key Features

• Premium materials: Coil packs use silicon steel, Japan-imported rubber and Germany-imported varnished wire for improved durability and resistance to corrosion and abrasion.
• High electrical resistance: Germany-imported Elektrisoal wire and Huntsman epoxy help deliver a strong, consistent spark that supports reliable ignition under load.
• Double iridium spark plugs: Iridium electrodes and special ceramic are intended to provide faster starts and sustained combustion performance similar to a new car.
• OE level durability: Designed as a direct replacement to avoid misfires and tested to work well for more than 15,000 miles in typical use.
• Wide fitment for Kia and Hyundai: Compatible with many Elantra, Tucson, Forte and Soul models with 1.8L and 2.0L L4 engines when the connector type matches.

Who It's For

This kit is best for DIY mechanics and vehicle owners who need a cost effective, full set replacement for worn coils and spark plugs on supported Hyundai and Kia 1.8L and 2.0L engines. It appeals to people who want components made from higher grade materials and who can verify the correct two or four pin connector before purchase.

It is not the best choice for buyers who cannot confirm the exact OE number or plug connector from their vehicle, or for those who require dealer-branded parts or manufacturer warranty parity; in those cases an OEM part or dealer consultation is advised.

Pros & Cons

Pros

• High quality construction with Germany and Japan sourced materials for long life and corrosion resistance.
• Double iridium plugs provide quicker starts and maintain spark stability under load.
• Good value and easy installation for many DIY users, restoring lost power and reducing misfires.

Cons

• Fitment can be tricky for 2017 and 2018 models that have both 2 pin and 4 pin variants, so buyers must check the connector carefully.

Specifications

Product type	Ignition coil pack with double iridium spark plug set (4 pcs)
Engine fit	Hyundai and Kia 1.8L and 2.0L L4 engines
Compatible models	Elantra, Elantra GT, Tucson, Forte, Forte Koup, Forte5, Soul (years 2011-2019 varies by model)
Materials	Silicon steel coils, Japan rubber, Germany varnished wire, Germany Elektrisoal wire, Huntsman epoxy
Spark plug type	Double iridium electrode with special ceramic
Replacement OE references	UF651, 273002E000, C1804, 27301-2E000, 5C1861 (check compatibility)
Durability claim	Tested to avoid misfire and work well for more than 15,000 miles

Our Verdict

The UF651 coil and double iridium spark plug set is a practical, value-minded replacement for owners of supported Kia and Hyundai 1.8L and 2.0L engines who can confirm connector type. Its higher grade materials and iridium plugs make it a sensible choice to restore power and reduce misfires, offering good durability for routine driving when fitment is verified.

Frequently Asked Questions

Will this kit fit my 2017 model?
Check whether your vehicle uses a 2 pin or 4 pin connector for the ignition coils; the kit fits both types across different years but you must confirm the connector before ordering.

Are the spark plugs included the same as OEM?
The plugs use iridium electrodes and special ceramic and are comparable to several OE references like NGK 9723 and others listed by the manufacturer; they are intended as a long life replacement.

How long will the coils and plugs last?
The manufacturer indicates OE level durability and states the parts perform well for more than 15,000 miles in normal use, though real life lifespan will depend on driving conditions and maintenance.