BDFHYK UF816 ignition coil and ILZKR8C8G iridium spark plug set

UF816 ignition coil set for compatible Hyundai Elantra 2.0L applications

UF816 ignition coil set for compatible Hyundai Kona 2.0L applications

ILZKR8C8G iridium spark plugs for compatible Hyundai and Kia 2.0L applications

BDFHYK 4-coil 4-plug ignition set with UF816 reference

UF816 ignition coil replacement reference 27300-2E601

BDFHYK ignition coil and spark plug set for compatible Kia Soul 2.0L

BDFHYK Ignition Coil UF816+Iridium Plugs ILZKR8C8G Fits Hyundai 2017-2020 Elantra, 2018-2020 Kona,2020 Soul 2.0L L4,Set of 4

$68.99

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07106BK-CK1
OE Number For Coil: UF816, C985, 273002E601, B288, 27300-2E601, E1316, GN10877, UF-816
OE Number For Spark plug:ILZKR8C8G

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Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil + Iridium Spark Plug Set
Ignition Coil Quantity	4
Spark Plug Quantity	4
Ignition Coil Reference	UF816
Spark Plug Reference	ILZKR8C8G
Primary Applications	2017–2020 Hyundai Elantra; 2018–2020 Hyundai Kona; 2020 Kia Soul; 2.0L L4 — confirm exact fitment

BDFHYK UF816 ignition coil and ILZKR8C8G iridium spark plug set includes 4 ignition coils and 4 spark plugs for compatible Hyundai and Kia 2.0L L4 applications. Listed applications include 2017–2020 Hyundai Elantra, 2018–2020 Hyundai Kona, and 2020 Kia Soul. Confirm the exact year, model, engine, connector design, and replacement references before installation.

Product Details

Brand: BDFHYK
Product Type: Ignition Coil + Iridium Spark Plug Set
Package: 4 ignition coils + 4 spark plugs
Ignition Coil Reference: UF816
Spark Plug Reference: ILZKR8C8G

Fitment Check

Match the vehicle year, model, engine, connector keying, coil body, boot profile, and replacement references with the removed components before installation. Do not force a connector or mounting point that does not match the original configuration.

Reference Numbers

Ignition coil comparison references include UF816, C985, 273002E601, B288, 27300-2E601, E1316, GN10877, and UF-816. The listed spark plug reference is ILZKR8C8G.

Diagnosis Before Replacement

Misfire, rough idle, hard starting, hesitation, or an ignition-related fault code can involve an ignition coil or spark plug, but these symptoms do not prove either component is the only cause. Check the affected cylinder, plug condition, connectors, wiring, fuel delivery, intake leaks, compression, timing, and other relevant engine conditions before replacing parts.

Installation Notes

Compare each replacement coil and plug with the removed parts before installation.
Inspect spark-plug wells for oil, moisture, corrosion, or debris.
Confirm electrical connectors are fully seated and retained.
Use vehicle-specific service information for spark-plug specification, gap, torque, and access procedures.

Replacement Planning

Replacement quantity should follow diagnosis, component condition, service history, labor access, and the requirements of the exact engine. There is no universal mileage interval that requires every ignition coil to be replaced.

After Installation

If a misfire remains, recheck fitment, connector seating, spark-plug installation, and the affected cylinder. Further diagnosis may be required for wiring, injectors, fuel delivery, intake leaks, compression, timing, or other mechanical conditions.

Difficulty Moderate

Estimated Time 0.5–1 hour

Tools Required

Screwdrivers
Service manual specific to your vehicle
Socket set and ratchet
Wrenches

Pre-Installation Checklist

Stop the engine before disassembling or replacing the ignition coil.
Check the spark plugs and spark plug wires as part of diagnosis.
Keep the installation area clean and dry.
Make sure the ignition coil connections are correct.
Refer to the service manual for your specific vehicle because removal order and connector or fastener details can vary by make and model.
Disconnect the negative battery cable before working on the ignition system.

Installation Steps

Disconnect the battery. Remove the negative battery cable by loosening the clamp bolt with a socket or wrench.
Locate the ignition coils on top of the engine. They may be attached to the engine block or surrounding components.
Disconnect and remove the old ignition coil. Remove the mounting bolts or screws and disconnect the electrical connector(s). The order can vary by vehicle, so follow the vehicle-specific service manual. Remove the old coil once fully disconnected.
If one coil serves multiple spark plugs and has multiple electrical connections, mark or label the connectors so they can be reattached to the correct terminals.
Install the new ignition coil in the reverse order of removal. Secure the mounting bolts or screws and reconnect the electrical connector(s) in the correct positions.
Reconnect the negative battery terminal. Hand-tighten the connection, then tighten the terminal bolt with a socket or wrench. Do not over-tighten.
Close the hood, start the engine with the vehicle in Park, and confirm it starts and idles normally. If it does, test-drive the vehicle.

Post-Installation Verification

Confirm the new ignition coil is securely mounted.
Confirm all electrical connectors are connected to the correct terminals.
Confirm the negative battery terminal is reconnected and tightened sufficiently without over-tightening.
Start the engine in Park and confirm it starts and idles normally.
If idle is normal, test-drive the vehicle and check for remaining misfire or drivability symptoms.

Troubleshooting

Spark plug and wire checks from the manual:
With the engine running, disconnect spark plug wires one at a time and observe engine-speed or roughness changes; the manual states that no significant change can indicate a bad spark plug.
The manual describes checking for spark by holding the end of a disconnected spark plug wire near a metal surface and looking or listening for a spark or cracking sound.
While the engine is cranked, check for spark at each spark plug wire; the manual states that no spark can indicate a dead wire.
Make sure battery, ignition, coil, and spark-plug wire connections are secure. Wiggle connections and retest if a loose connection is suspected.
Keep spark plug ends clean and free of dirt, oil, or grease; clean and retest before replacing a plug.
Inspect wires for cracked, cut, scraped, or burned insulation. Check boots and terminals for damage, corrosion, or poor contact.
Check for corrosion between the boot, spark plug, and ignition coil, and inspect the spark plug for discoloration or damage.
Inspect spring clips and wire retention at the distributor and spark plug ends to make sure connections are held securely.
Ignition coil failure can cause one or more cylinders to misfire, stuttering, sluggishness, and other drivability issues.

BDFHYK Ignition Coil Installation Guide

Q: Which vehicles are listed for this UF816 ignition coil set?

A: Primary listed applications include 2017–2020 Hyundai Elantra, 2018–2020 Hyundai Kona, and 2020 Kia Soul 2.0L L4 configurations. Confirm the exact year, engine, connector, and reference before installation.

Q: How many ignition coils and spark plugs are included?

A: The set includes 4 ignition coils and 4 iridium spark plugs.

Q: Which ignition coil reference should I compare?

A: UF816 is the primary reference. Comparison numbers include C985, 273002E601, B288, 27300-2E601, E1316, GN10877, and UF-816.

Q: Which spark plug reference is listed?

A: The listed spark plug reference is ILZKR8C8G.

Q: Does a misfire code prove the ignition coil is bad?

A: No. Misfire codes can also involve spark plugs, wiring, connectors, fuel delivery, intake leaks, compression, timing, or other engine conditions.

Q: Should all four coils be replaced at the same time?

A: Replacement scope should follow diagnosis, component condition, service history, and exact engine requirements. One failed coil does not prove every coil is faulty.

Q: Should the spark plugs be inspected during coil replacement?

A: Yes. Check plug condition, wear, fouling, damage, and the correct specification for the exact engine.

Q: What if oil or moisture is in a spark-plug well?

A: Correct oil, moisture, corrosion, or debris before evaluating the replacement ignition parts because contamination can affect the boot and electrical connection.

Q: What if the engine still misfires after installation?

A: Recheck fitment, connector seating, plug installation, and the affected cylinder, then continue diagnosis of wiring, fuel, air, compression, timing, or other mechanical conditions.

Q: Which spark-plug gap or torque should I use?

A: Use service information for the exact vehicle and engine because spark-plug gap, torque, and access procedures vary by application.

Returns & Refunds

We accept returns within 30 days of delivery for eligible items. If the product is unused and in original condition, you may request a return according to our refund policy. Full policy details: View Refund Policy . We recommend contacting our support team before initiating a return to ensure the fastest resolution.

Customer Support

If you purchased the wrong part, received an incompatible item, or need installation assistance, please contact us directly.

Email: service@bdfhyk.com

Business Hours:

Mon–Fri 9:00–18:00 (GMT+8)

Mon–Fri 19:00–04:00 (UTC−6 / CST)

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Integrated R&D, production, and warehousing. Eliminate middleman markups: same quality at lower prices, superior quality at same prices.

Precision Inspection, Commitment to Excellence
Rigorous inspection process, international certification standards. Each product includes individual inspection.

Before vs After Replacement

Replacing worn ignition coils and spark plugs helps restore stable ignition and smoother engine performance.

BEFORE

Rough Idle & Engine Vibration Noticeable engine shaking while idling. Irregular exhaust flow may indicate unstable ignition performance.

AFTER

Fast Start & Stable Idle IMore consistent spark delivery reduces misfires and stabilizes idle speed.

BEFORE

Sluggish Acceleration Weak throttle response at lower RPM. Vehicle may feel underpowered.

AFTER

Enhanced Power Response Improved throttle response and smoother acceleration

BEFORE

Increased Fuel Consumption Poor combustion can lead to higher fuel usage.

AFTER

Improved Fuel Efficiency Optimized ignition supports more efficient combustion.

Performance improvements may vary depending on vehicle condition.