BDFHYK UF651 ignition coil and 9686 iridium spark plug kit for Hyundai and Kia L4 applications

UF651 ignition coil pack with 9686 iridium spark plugs for Hyundai Elantra L4 applications

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BDFHYK OE-style UF651 ignition coil and 9686 iridium spark plug components

BDFHYK Ignition Coil UF651 with Iridium Spark Plug 9686 For Kia Soul 2012-2015, Hyundai Elantra Coupe GT 2016-2018, Set of 4

$42.99

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-01902-CK
OE Number For Coil: UF651, UF-651, UF651T, 5C1861, C1804, 1788511, 273002E000, BB2651, 48871, C-898, 50146, GN10633, 5147, 21A0112
OE Number For Spark plug:9686, 9417, 93175, 94705, 9723, 97390, 5356, XP5702, 18846-11070

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Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil + Spark Plug Set
Primary Coil Reference	UF651 / UF-651
OE / Interchange Reference	273002E000
Spark Plug Reference	9686
Spark Plug Construction	Iridium spark plug
Engine	1.8L / 2.0L L4 for the listed applications
Listed Vehicle Fitment	2012–2018 Kia Soul 2.0L L4; 2014–2016 Kia Forte 1.8L / 2.0L L4; 2011–2016 Hyundai Elantra 1.8L / 2.0L L4; 2013–2014 Elantra Coupe 1.8L / 2.0L L4; 2013–2020 Elantra GT 1.8L / 2.0L L4; 2014–2020 Tucson 2.0L L4
Fitment Checks	Confirm exact year, model, engine, UF651/273002E000 reference, connector shape/keying, boot profile, 9686 spark plug reference, and required service quantity.
Installation Checks	Inspect wiring/connectors and plug wells; compare removed and replacement components; use the vehicle service specification for spark plug gap and tightening torque.
Important Note	BDFHYK OE-style aftermarket service components, not factory-branded parts.

BDFHYK UF651 Ignition Coil and 9686 Iridium Spark Plug Kit for Hyundai and Kia L4

Rough idle, hard starting, hesitation under load, or a cylinder-specific misfire may involve worn ignition components, but wiring, connectors, fuel delivery, intake leaks, sensors, compression, timing, and other mechanical conditions can produce similar symptoms. This BDFHYK ignition coil and spark plug kit uses the UF651 ignition coil reference with 9686 iridium spark plugs for Hyundai and Kia L4 applications. Confirm the exact engine, coil reference, connector shape, spark plug reference, and required service quantity before ordering.

Hyundai and Kia L4 Fitment

Year	Make	Model	Engine	Notes
2012-2016	Hyundai	Elantra	1.8L L4 (2012-2016) 2.0L L4 (2012, 2014-2015)	2012: Cyl. 1-4 2015 2.0L: To 12/2015, 2 Terminal
2013-2014	Hyundai	Elantra Coupe	1.8L L4 (2013) 2.0L L4 (2014)	-
2013-2020	Hyundai	Elantra GT	1.8L L4 (2013) 2.0L L4 (2014-2020)	-
2014-2020	Hyundai	Tucson	2.0L L4	-
2014-2016	Kia	Forte	1.8L / 2.0L L4	-
2014-2016	Kia	Forte Koup	2.0L L4	-
2014-2018	Kia	Forte5	2.0L L4	2018: 2 Terminal
2014	Kia	Rondo	2.0L L4	-
2012-2019	Kia	Soul	2.0L L4	-

Package Includes: 4x Ignition Coils & 4x Iridium Spark Plugs.
Please verify your vehicle's year, make, model, engine, production date, and ignition coil terminal configuration before purchasing.

UF651 Ignition Coil Reference

Use UF651 / UF-651 as the primary ignition coil pack reference. The Interchange references include 273002E000. Compare the removed ignition coil body, connector shape, keying, and boot profile before ordering.

9686 Iridium Spark Plug Reference

References include 9686 as a spark plug reference and identifies an iridium electrode design. Confirm the exact spark plug reference required for the vehicle before installation.

How to Confirm UF651 Coil Pack Fitment

Confirm year, make, model, and engine.
Compare the removed coil body, connector shape, keying, and boot profile.
Confirm the original OE/interchange reference on the removed component.
Confirm the service quantity required for the exact engine.
Verify the 9686 spark plug reference for the exact application.

Ignition Diagnostic Checks Before Replacement

A misfire code alone does not prove that an ignition coil has failed. Inspect wiring, connectors, spark plug wells, fuel delivery, intake leaks, sensors, compression, timing, and other mechanical conditions as part of the diagnosis.

Installation Checks

Inspect wiring and electrical connectors before installation.
Check spark plug wells for oil or moisture.
Compare the old and new coil body, connector, and boot profile.
Use the exact vehicle service specification for spark plug gap and tightening torque.
Verify connector seating after installation.

These are BDFHYK OE-style aftermarket service components, not factory-branded parts.

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: Will this UF651 ignition coil and spark plug kit fit my Hyundai or Kia?

A: Applications include the listed Hyundai Elantra, Elantra Coupe, Elantra GT, Tucson, Kia Soul, and Kia Forte L4 configurations. Confirm the exact year and engine before ordering.

Q: Which ignition coil reference should I compare?

A: Compare UF651 / UF-651 and 273002E000 with the original reference on the removed ignition coil.

Q: Which spark plug reference is used?

A: The primary spark plug reference is 9686.

Q: Is the spark plug iridium?

A: Yes. The identifies an iridium spark plug.

Q: Does every listed vehicle use the same service quantity?

A: Do not assume that package quantity and required service quantity are identical for every application. Confirm the exact engine's service requirement.

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

A: No. Wiring, connectors, injectors, fuel delivery, intake leaks, sensors, compression, timing, and other mechanical conditions can cause similar symptoms.

Q: Should all coils and spark plugs be replaced together?

A: Replacement should follow diagnostic results, component condition, service history, and the exact engine's service requirements.

Q: What should I compare before ordering?

A: Compare year, model, engine, UF651 reference, connector shape/keying, boot profile, and the 9686 spark plug reference.

Q: What spark plug gap should I use?

A: Use the exact vehicle service specification for the specific engine and spark plug application.

Q: What tightening torque should I use?

A: Use the exact vehicle service specification for the specific engine and spark plug application.

Q: What should I inspect during installation?

A: Inspect wiring and connectors, check spark plug wells for oil or moisture, and verify connector seating after installation.

Q: Are these Genuine OEM parts?

A: No. These are BDFHYK OE-style aftermarket service components, not factory-branded parts.

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)

Manufacturing Standards

Direct Factory Supply, Cost Saving
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.