BDFHYK UF270 ignition coil and 4503 / PK16TT spark plug kit

8 UF270 ignition coils and 8 Platinum TT spark plugs

UF270 ignition coil pack with 4503 / PK16TT spark plugs

BDFHYK OE-style UF270 ignition coil replacement set

UF270 coil-on-plug components with 4503 / PK16TT spark plugs

Ignition service kit with UF270 coils and 4503 / PK16TT plugs

BDFHYK UF270 and 4503 / PK16TT ignition service components

BDFHYK 8 Ignition Coil UF270 and 8 Iridium Spark Plug 4503 for Dodge Durango, Ram 1500; Jeep Grand Cherokee 4.7L V8

$91.99

Product Detail

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07540-CK
OE Number Coil: UF270, SKIC038, 5C1114, UF297, UF-270, UF-399, 56028138, 56028138AB, C522M8, 56028138AD, 56028138AE, 56028138AF, 56028138BA, 89057966, 89057951
OE Number For Spark plug:4503, 0031596803, 101905611A, 101905631G, 1881411051, 22401AA65A, 5862052370, 8920633030, 9091901169, 9091901196, 980795517S, AGSP32F, AW350015, BP1318110, C2A1535, JE4118110, MD372553, MS851357, MS851501, MS851622, T0714540

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UF270 Ignition Coil & 4503 Platinum TT Spark Plug Kit for Dodge / Jeep 4.7L V8

Cold-start shaking, rough idle, hard starting, or hesitation under acceleration can involve worn ignition components, but similar symptoms may also come from wiring, injectors, fuel delivery, intake leaks, sensors, compression, or mechanical faults. This BDFHYK UF270 ignition service set is for the listed applications below. Confirm exact fitment and service quantity before ordering.

UF270 / 4503 / PK16TT Vehicle Fitment

Dodge Dakota 2000–2007 — 4.7L V8
Dodge Durango — listed 4.7L V8 applications
Dodge Ram 1500 — listed 4.7L V8 applications
Jeep Grand Cherokee — listed 4.7L V8 applications
Chrysler Aspen 2007 and Mitsubishi Raider 2006–2007 — confirm exact 4.7L V8 application

What Is Included?

8 ignition coils
8 Platinum TT spark plugs

UF270 Ignition Coil Reference Numbers

UF270, UF-270, UF297, UF-399, 5C1114, 56028138, 56028138AB, 56028138AD, 56028138AE, 56028138AF, 56028138BA

When Should You Inspect the Ignition Coils?

Ignition coils do not have one universal mileage-based replacement interval. Inspect them when spark plug service is due, when an older vehicle reaches higher-mileage service, or when symptoms appear. If service history is unknown, roughly 60,000–100,000+ miles is a useful inspection window for coil boots, connectors, plug wells, spark plug wear, and stored misfire codes—not an automatic replacement point.

Frequent short trips, stop-and-go driving, high-load use, long idling, repeated heat cycles, or oil and moisture in the plug wells can justify earlier inspection. Worn spark plugs can also increase voltage demand on the ignition coils.

What May Improve After Replacing a Confirmed Weak Coil or Worn Plug?

More stable idle if weak spark was causing rough running
More consistent starting if ignition energy had become marginal
Smoother acceleration or load response if misfire was ignition-related
Fewer cylinder-specific misfire events after the failed component is corrected

These are restoration benefits, not a promise of extra horsepower or guaranteed fuel-economy gains.

High-Mileage Ignition Service Scenarios

Spark Plug Service Is Due

Inspect the coils while the plugs are being serviced for cracked housings, carbon tracking, damaged boots, loose connectors, oil contamination, or moisture.

Cold-Start Shaking or Rough Idle

Check cylinder-specific misfire codes and inspect the plug and coil on the affected cylinder. A flashing check-engine light can indicate an active misfire and should be addressed promptly.

Hesitation Under Acceleration or Load

A marginal coil or worn plug may become more noticeable as cylinder pressure rises. Confirm the affected cylinder before replacement.

Fitment & Installation Checks

Match year, make, model, engine, and cylinder configuration.
Compare connector keying, coil body, mounting point, boot profile, and printed references.
Confirm spark plug reference 4503 / PK16TT for the exact engine.
Follow the exact vehicle service specification for spark plug gap and tightening torque.
Inspect wiring, connectors, boots, and plug wells for oil, moisture, corrosion, or physical damage.

Important: These are BDFHYK OE-style aftermarket ignition service components, not factory-branded parts. A diagnostic trouble code alone does not prove that an ignition coil has failed.

Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil + Spark Plug Kit
Primary Coil Reference	UF270
Spark Plug Reference	4503 / PK16TT
Spark Plug Construction	Platinum TT
Package Quantity	8 Ignition Coils + 8 Spark Plugs
Includes	8 Ignition Coils + 8 Platinum TT Spark Plugs
Listed Vehicle Fitment	Dodge Dakota 2000–2007 — 4.7L V8; Dodge Durango — listed 4.7L V8 applications; Dodge Ram 1500 — listed 4.7L V8 applications; Jeep Grand Cherokee — listed 4.7L V8 applications; Chrysler Aspen 2007 and Mitsubishi Raider 2006–2007 — confirm exact 4.7L V8 application
OE / Interchange References	UF270, UF-270, UF297, UF-399, 5C1114, 56028138, 56028138AB, 56028138AD, 56028138AE, 56028138AF, 56028138BA
Inspection Guidance	No universal ignition-coil replacement interval. Inspect during spark-plug service, around higher-mileage service such as roughly 60,000–100,000+ miles when history is unknown, or sooner when symptoms or contamination are present.
Common Service Scenarios	Cold-start misfire, rough idle, hesitation under load, cylinder-specific misfire, spark-plug service, and high-mileage ignition inspection after diagnosis.
Fitment Checks	Confirm exact year, model, engine, connector shape/keying, coil body, boot profile, coil reference, spark plug reference, and required service quantity.
Installation Checks	Inspect wiring, connectors and plug wells; compare new parts with removed components; follow exact vehicle spark plug gap and tightening-torque specifications.
Important Note	Replace ignition coils based on diagnosis and component condition, not mileage alone.

Q: What is included in this UF270 ignition kit?
A: The package includes 8 ignition coils and 8 Platinum TT spark plugs.

Q: Which vehicles does this kit fit?
A: Use the listed applications as a starting point, then confirm exact year, engine, connector and original part references.

Q: At what mileage should ignition coils be inspected?
A: There is no universal replacement mileage. Roughly 60,000–100,000+ miles is a useful inspection window on older vehicles with unknown service history, but replacement should be based on diagnosis and condition.

Q: Should ignition coils automatically be replaced at 100,000 miles?
A: No. If the engine runs correctly and the coils test well, mileage alone is not a reason to replace them.

Q: Can worn spark plugs increase stress on ignition coils?
A: Yes. As the firing gap becomes harder to bridge, ignition voltage demand can increase. Keeping plugs on the correct service schedule can reduce unnecessary stress.

Q: Can weak coils cause rough idle or hesitation?
A: They can contribute to rough idle, cold-start shaking, hesitation under load, and cylinder-specific misfires, but other fuel, air, electrical, sensor, or mechanical faults can cause similar symptoms.

Q: What can improve after replacing a confirmed weak coil or worn plug?
A: When ignition components were the cause, the engine may return to a steadier idle, more consistent starting and smoother acceleration. This restores lost performance; it does not add extra rated horsepower.

Q: Should coils and plugs always be replaced together?
A: Not automatically. Inspect both systems together and service according to actual condition, maintenance history and package quantity.

Q: What does a flashing check-engine light mean?
A: It can indicate an active misfire. Reduce driving and diagnose the fault promptly because continued misfiring can overheat the catalytic converter.

Q: What should be checked before installation?
A: Confirm fitment, connector and coil shape, inspect plug wells for oil or moisture, and use the exact service specification for spark plug gap and torque.

Q: What if the engine still misfires after replacement?
A: Continue diagnosis of wiring, connectors, injectors, fuel pressure or delivery, intake leaks, sensors, compression and mechanical timing.

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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