BDFHYK UF665 ignition coil and 93893 Iridium IX spark plug kit for Subaru 2.5L H4

4 UF665 ignition coils and 4 LFR6AIX Iridium IX spark plugs for listed Subaru 2.5L H4 applications

UF665 coil kit for Subaru Forester 2011-2013 and Impreza 2011-2014 2.5L H4

UF665 ignition coil and 93893 spark plug set for Subaru Legacy 2010-2012 2.5L H4

BDFHYK UF665 ignition service kit for Subaru WRX 2012-2014 2.5L H4

UF665 and LFR6AIX kit for Subaru WRX STI 2013-2018 listed 2.5L H4 applications

UF665 3-pin coil references with 93893 Iridium IX plugs for listed Subaru 2.5L H4

BDFHYK 4 Ignition Coil UF665 and 4 Iridium Spark Plug 93893 for Subaru WRX, STI, Impreza, Forester, Legacy 2.5L H4 2010-2018

$86.49

Product Detail

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07439-CK
OE Number Coil: 22433AA600, 22433AA601, 22433AA611, UF665, UF-665, COP583, 49122, 1788572, 5C2100, C884
OE Number For Spark plug:93893

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UF665 Ignition Coil & 93893 Iridium IX Spark Plug Kit for Subaru 2.5L H4

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 4 ignition coils and 4 Iridium IX spark plugs for the listed applications below. Confirm the exact vehicle, engine, connector, and reference numbers before ordering.

UF665 / 93893 / LFR6AIX Vehicle Fitment

Vehicle	Years	Engine
Subaru Forester	2011-2013	2.5L H4
Subaru Impreza	2011-2014	listed 2.5L H4 applications
Subaru Legacy	2010-2012	2.5L H4
Subaru WRX	2012-2014	listed 2.5L H4 applications
Subaru WRX STI	2013-2018	listed 2.5L H4 applications

Fitment note: The model-year ranges are application-specific; do not treat 2010-2018 as a universal fitment range for every listed Subaru model.

What Is Included in the UF665 & 93893 / LFR6AIX Ignition Kit?

4 ignition coils
4 Iridium IX spark plugs

UF665 Ignition Coil Reference Numbers

UF665, UF-665, 22433AA600, 22433AA601, 22433AA611, COP583, 49122, 1788572, 5C2100, C884.

UF665 / 93893 / LFR6AIX 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.

Four-Cylinder Ignition Maintenance

The 4+4 package matches a four-cylinder service quantity after the exact listed 2.5L H4 application and original ignition components are confirmed.

How to Confirm UF665 and 93893 / LFR6AIX 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 93893 / LFR6AIX 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 UF665 & 93893 / LFR6AIX 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	UF665
Spark Plug Reference	93893 / LFR6AIX
Spark Plug Construction	Iridium IX
Package Quantity	4 Ignition Coils + 4 Iridium IX Spark Plugs
Includes	4 Ignition Coils + 4 Iridium IX Spark Plugs
Engine	Listed Subaru 2.5L H4 applications
Listed Vehicle Fitment	Forester 2011-2013; Impreza 2011-2014; Legacy 2010-2012; WRX 2012-2014; WRX STI 2013-2018 — listed 2.5L H4 applications
OE / Interchange References	UF665, UF-665, 22433AA600, 22433AA601, 22433AA611, COP583, 49122, 1788572, 5C2100, C884
Connector	3-pin; confirm keying and original coil before ordering
Common Service Scenarios	Cylinder-specific misfire diagnosis, rough idle, hesitation under load, hard starting, and four-cylinder ignition maintenance after component testing
Fitment Checks	Confirm model-specific year range, exact 2.5L H4 engine, connector, coil body, mounting area, boot profile and UF665 / 93893 references
Installation Checks	Inspect wiring, connectors, boots and plug wells; compare removed parts; use exact Subaru service information for spark plug gap and tightening torque
Important Note	Model-specific year ranges vary; do not treat this as a universal 2010-2018 fitment.

Q: Will the UF665 and 93893 kit fit every 2010-2018 Subaru 2.5L model?
A: No. Model-specific year ranges differ. Confirm Forester 2011-2013, Impreza 2011-2014, Legacy 2010-2012, WRX 2012-2014, or WRX STI 2013-2018 as listed, plus the exact 2.5L H4 engine.

Q: What is included in this kit?
A: The package includes 4 UF665-style ignition coils and 4 93893 / LFR6AIX Iridium IX spark plugs.

Q: Which Subaru Forester years are listed?
A: The listed Forester application is 2011-2013 with the applicable 2.5L H4 configuration.

Q: Which Impreza, Legacy, WRX and WRX STI years are listed?
A: Impreza is listed for 2011-2014, Legacy 2010-2012, WRX 2012-2014, and WRX STI 2013-2018, subject to exact 2.5L H4 fitment.

Q: Which ignition coil references should I compare?
A: Compare UF665 and the listed 22433AA600 / 22433AA601 / 22433AA611 and other interchange references where applicable.

Q: Which spark plug reference is included?
A: The listed plug is 93893 / LFR6AIX, an Iridium IX spark plug.

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

Q: Should all four coils and plugs be replaced together?
A: That depends on diagnosis, age, mileage and component condition. A matched four-cylinder set can be practical when the service plan supports it.

Q: What should be compared before ordering?
A: Compare the model-specific year, exact 2.5L H4 engine, 3-pin connector, coil body, mounting area, boot profile and printed references.

Q: What spark plug gap and torque should be used?
A: Use the exact Subaru service specification for the specific model and engine; do not use a universal value.

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

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

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