BDFHYK UF823 ignition coil and 6509 Iridium IX spark plug kit for Ford 3.5L and 3.7L V6 applications

6 UF823 ignition coils with 6 6509 LTR6IX-11 Iridium IX spark plugs for Ford V6 service

UF823 coil pack and 6509 spark plug set for Ford F-150 Edge Explorer and Mustang

BDFHYK UF823 ignition coil kit for listed Ford F-150 Edge and Explorer 3.5L V6

UF823 ignition coils with 6509 spark plugs for Ford Mustang 2016-2017 3.7L V6

UF823 references 7T4Z12029F DG563 GN10891 with 6509 Iridium IX spark plugs

BDFHYK UF823 and 6509 six-coil six-plug ignition service kit for listed Ford V6 applications

BDFHYK Ignition Coil Pack UF823 and Iridium Spark Plugs 6509, Fits Ford F-150 Mustang Explorer Edge 3.5L V6, Set of 6

$80.49

Product Detail

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07436-CK
OE Number Coil: 7T4Z12029F, DG563, UF823, UF-823
OE Number For Spark plug:41-109, 12622561, LTR5IX11, SP-411, 6509, LTR6IX-11, AP5263, XP5363

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UF823 Ignition Coil & 6509 Iridium IX Spark Plug Kit for Ford V6 Applications

Rough idle, hard starting, hesitation under load, or a cylinder-specific misfire can involve an ignition coil or worn spark plug, but wiring, injectors, fuel delivery, intake leaks, sensors, compression, timing, and other mechanical conditions can create similar symptoms. This BDFHYK ignition service kit combines 6 ignition coils and 6 Iridium IX spark plugs for the listed applications below. Confirm the exact vehicle, engine, connector, and reference numbers before ordering.

UF823 / 6509 / LTR6IX-11 Vehicle Fitment

Vehicle	Years	Engine
Ford Edge	2016-2018	listed 3.5L V6 applications
Ford Explorer	2017-2019	listed naturally aspirated 3.5L V6 applications
Ford F-150	2016-2017	listed naturally aspirated 3.5L V6 applications
Ford Mustang	2016-2017	3.7L V6

Fitment note: The listed Mustang application is 3.7L V6, not 3.5L. Production-date splits can also apply, so confirm the exact engine and original coil before ordering.

What Is Included in the UF823 & 6509 / LTR6IX-11 Ignition Kit?

6 ignition coils
6 Iridium IX spark plugs

UF823 Ignition Coil Reference Numbers

UF823, UF823T, 7T4Z12029F, DG563, GN10891, 5C2275.

UF823 / 6509 / LTR6IX-11 Service Scenarios

Rough Idle or Cold-Start Misfire

Inspect the affected ignition coil, spark plug, connector, wiring, boot area, and plug well before replacement. A cold-start or cylinder-specific misfire can also come from fuel delivery, air leaks, sensors, compression, or other mechanical conditions.

Hesitation During Acceleration or Load

A marginal ignition component can become more noticeable when cylinder pressure rises under acceleration or load. Confirm the affected cylinder and component condition rather than treating hesitation alone as proof of a failed coil.

Six-Cylinder Ignition Maintenance

The 6+6 package matches a six-cylinder quantity after the exact listed naturally aspirated 3.5L or Mustang 3.7L V6 application is confirmed.

How to Confirm UF823 and 6509 / LTR6IX-11 Fitment Before Ordering

Confirm the exact year, model, engine, and cylinder configuration.
Compare the original coil connector, keying, body, mounting point, boot profile, and printed references.
Confirm spark plug reference 6509 / LTR6IX-11 against the removed plug or exact vehicle service information.
Verify the package quantity matches the intended service plan and engine configuration.
Do not use a misfire DTC alone as proof that an ignition coil is faulty.

Installation Checks for the UF823 & 6509 / LTR6IX-11 Kit

Work on a cool engine and keep debris out of the spark plug wells.
Inspect connectors, wiring, boots, and plug wells for damage, corrosion, oil, or moisture.
Compare each new component with the removed part before installation.
Use the exact vehicle service specification for spark plug gap and tightening torque; do not guess.
Verify connector seating and recheck stored or returning misfire codes after service.

Important: These are BDFHYK OE-style aftermarket service components, not factory-branded parts. If symptoms remain after ignition service, continue diagnosis of the affected cylinder and related systems.

Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil + Iridium IX Spark Plug Kit
Primary Coil Reference	UF823
Spark Plug Reference	6509 / LTR6IX-11
Spark Plug Construction	Iridium IX
Package Quantity	6 Ignition Coils + 6 Iridium IX Spark Plugs
Includes	6 Ignition Coils + 6 Iridium IX Spark Plugs
Engine Applications	Listed Ford 3.5L V6 and 3.7L V6 applications
Listed Vehicle Fitment	Ford Edge 2016-2018 listed 3.5L V6; Explorer 2017-2019 listed naturally aspirated 3.5L V6; F-150 2016-2017 listed naturally aspirated 3.5L V6; Mustang 2016-2017 3.7L V6
OE / Interchange References	UF823, UF823T, 7T4Z12029F, DG563, GN10891, 5C2275
Connector	2-pin; production-date splits may apply
Common Service Scenarios	Cylinder-specific misfire diagnosis, rough idle, hesitation under load, hard starting, and V6 ignition maintenance after component testing
Fitment Checks	Confirm exact model, year, 3.5L or 3.7L V6 engine, production date where applicable, connector, coil body, boot profile and UF823 / 6509 references
Installation Checks	Inspect wiring, connectors, boots and plug wells; compare removed parts; use exact Ford service information for spark plug gap and tightening torque
Important Note	The listed Mustang application is 3.7L V6, not 3.5L V6.

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 the UF823 and 6509 kit fit my Ford?
A: Confirm the exact listed model, year, 3.5L or 3.7L V6 engine, production date where applicable, connector and OE references.

Q: What is included in this kit?
A: The package includes 6 UF823-style ignition coils and 6 6509 / LTR6IX-11 Iridium IX spark plugs.

Q: Which engines are listed for this UF823 kit?
A: Listed Edge, Explorer and F-150 applications use 3.5L V6 engines, while the listed 2016-2017 Mustang uses a 3.7L V6.

Q: Does the 6 + 6 quantity match the listed engines?
A: Yes, after exact V6 fitment is confirmed, six coils and six plugs match a six-cylinder service quantity.

Q: Which ignition coil references should I compare?
A: Compare UF823, 7T4Z12029F, DG563, GN10891 and 5C2275 where applicable.

Q: Which spark plug reference is included?
A: The listed plug is 6509 / LTR6IX-11, an Iridium IX spark plug.

Q: Do production-date splits matter?
A: Yes. Some UF823 applications have mid-year production splits, so confirm the build date and OE coil reference before ordering.

Q: Does a misfire code prove the coil is bad?
A: No. Wiring, injectors, fuel delivery, intake leaks, sensors, compression or mechanical faults can cause similar symptoms.

Q: What should be compared before ordering?
A: Compare exact model, year, engine, production date, 2-pin connector, coil body, boot profile and printed references.

Q: What spark plug gap and torque should be used?
A: Use the exact Ford service specification for the specific engine and vehicle.

Q: What if the engine still misfires after service?
A: Continue diagnosis of wiring, injectors, fuel delivery, intake leaks, sensors, compression and mechanical timing as applicable.

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.

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

Email: service@bdfhyk.com

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