BDFHYK UF303 ignition coil and 5019 iridium spark plug kit for listed GM and Isuzu applications

Six UF303 ignition coils and six 5019 iridium spark plugs for listed L4 L5 and L6 applications

UF303 ignition coil and 5019 spark plug kit for Buick Rainier and Chevrolet TrailBlazer 4.2L L6

UF303 coil and 5019 iridium spark plug kit for Chevrolet Colorado and GMC Canyon applications

BDFHYK UF303 ignition coil kit for Hummer H3 and Isuzu i-Series listed L5 applications

UF303 ignition coils and 5019 spark plugs for GMC Envoy Oldsmobile Bravada and Saab 9-7X

UF303 ignition coil reference 12568062 with 5019 iridium spark plug service kit

BDFHYK UF303 and 5019 ignition service kit with six coils and six spark plugs

BDFHYK Ignition Coil UF303 and Iridium Plugs 5019 Fits For Buick Rainier, Chevy Colorado Trailblazer EXT, Canyon Envoy,Sets of 6

$116.49

Product Detail

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07507-CK
Engine
- 2.8L L4
- 3.5L L5
- 3.7L L5
- 4.2L L6
OE Number Coil: 5019, ITV16TT, AP5263DP2, PTV16TT, SP411, AP5263, AP5364, AYFS22FM, HR8NPP302X, RE10PM5, HR7MPP30X, HR8MPP30X, RE10PMC5, 12628058, 12607280, 19239701
OE Number For Spark plug:5019, ITV16TT, AP5263DP2, PTV16TT, SP411, AP5263, AP5364, AYFS22FM, HR8NPP302X, RE10PM5, HR7MPP30X, HR8MPP30X, RE10PMC5, 12628058, 12607280, 19239701

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UF303 Ignition Coil & 5019 Iridium Spark Plug Kit for GM, Isuzu, Hummer & Saab

Misfire, rough idle, hard starting or hesitation can involve worn ignition components, but similar symptoms may also come from wiring, injectors, fuel delivery, intake leaks, sensors or mechanical faults. This BDFHYK UF303 ignition coil and 5019 iridium spark plug kit contains six coils and six plugs for listed GM-family and Isuzu applications. Because this fitment group includes L4, L5 and L6 engines, confirm the exact engine and required service quantity before installation.

UF303 / 5019 Vehicle Fitment

Buick Rainier 2004-2005 — 4.2L L6
Chevrolet Colorado 2004-2006 — listed 2.8L L4 and 3.5L L5 applications
Chevrolet TrailBlazer / TrailBlazer EXT 2002-2005 — listed 4.2L L6 applications
GMC Canyon 2004-2006 — listed 2.8L L4 and 3.5L L5 applications
GMC Envoy / Envoy XL 2002-2005 — 4.2L L6
Hummer H3 2006 — 3.5L L5
Isuzu i-280 2006 — 2.8L L4; i-350 2006 — 3.5L L5; i-370 2007-2008 — 3.7L L5
Isuzu Ascender 2003-2008 — listed 4.2L L6 applications
Oldsmobile Bravada 2002-2004 — 4.2L L6
Saab 9-7X 2005-2009 — listed 4.2L L6 applications

Important: This listing is not intended for the listed 5.3L V8 applications. Verify engine displacement and cylinder count before ordering.

What Is Included in the UF303 / 5019 Kit?

6 ignition coils
6 iridium spark plugs, reference 5019

Service quantity note: The package quantity is six of each component, but a 4-cylinder or 5-cylinder engine does not use six ignition positions. Use only the quantity required by the exact engine and service plan.

UF303 Ignition Coil Reference Numbers

UF303, UF303T, 12568062, 19300921, 8-12568-062-0, DQ50164, GN10114, 52-1743, 1788390, IC051218, D502A, HPUF303, DW01659

5019 Spark Plug References

5019, ITV16TT, AP5263DP2, PTV16TT, SP411, AP5263, AP5364, AYFS22FM, HR8NPP302X, RE10PM5, HR7MPP30X, HR8MPP30. Cross-references can vary by catalog; confirm the exact engine application before installation.

How to Confirm UF303 / 5019 Fitment Before Ordering

Confirm year, make, model, displacement and L4, L5 or L6 engine configuration.
Compare the original coil connector, body, boot profile, mounting and printed references.
Do not use the package quantity as proof of engine fitment.
Confirm 5019 or its applicable cross-reference for the exact engine.
Follow the vehicle service specification for spark plug gap and torque.

Diagnostic note: A misfire DTC does not prove an ignition coil has failed. If symptoms remain, continue diagnosis of wiring, injectors, fuel delivery, intake or vacuum leaks, sensors, compression and mechanical timing as applicable.

Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil + Spark Plug Kit
Primary Coil Reference	UF303
Spark Plug Reference	5019
Spark Plug Construction	Iridium electrode with ceramic insulator
Package Quantity	6 Ignition Coils + 6 Iridium Spark Plugs
Includes	6 Ignition Coils + 6 Iridium Spark Plugs
Engine Applications	Listed 2.8L L4, 3.5L / 3.7L L5 and 4.2L L6 applications
Listed Vehicle Fitment	Buick Rainier; Chevrolet Colorado, TrailBlazer / EXT; GMC Canyon, Envoy / XL; Hummer H3; Isuzu i-280 / i-350 / i-370 / Ascender; Oldsmobile Bravada; Saab 9-7X — only listed engines and years
OE / Interchange References	UF303, UF303T, 12568062, 19300921, 8-12568-062-0, DQ50164, GN10114, 52-1743, 1788390, IC051218, D502A, HPUF303, DW01659
Spark Plug Cross-References	5019, ITV16TT, AP5263DP2, PTV16TT, SP411, AP5263, AP5364, AYFS22FM, HR8NPP302X, RE10PM5, HR7MPP30X, HR8MPP30
Service Quantity Note	Package contains 6 coils and 6 plugs; L4 and L5 engines use fewer ignition positions, so install only the quantity required by the exact engine
Fitment Checks	Confirm exact engine size, cylinder count, connector, coil body, boot profile and UF303 / 5019 references before ordering
Important Note	Not for the listed 5.3L V8 applications.

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 UF303 and 5019 kit fit my GM or Isuzu vehicle?
A: Only the listed year, model and engine applications should be used. Confirm displacement, cylinder count, connector and reference numbers before ordering.

Q: What is included in this kit?
A: The package contains 6 UF303-style ignition coils and 6 iridium spark plugs with reference 5019.

Q: Why does a six-coil kit list some L4 and L5 engines?
A: The package quantity is six, but L4 and L5 engines use fewer ignition positions. Install only the quantity required by the exact engine and service plan.

Q: Does this kit fit 5.3L V8 models?
A: No. The current listing specifically excludes the listed 5.3L V8 applications.

Q: Which ignition coil references should I compare?
A: Compare UF303 / UF303T, 12568062, 19300921 and the other listed interchange numbers with the original part where applicable.

Q: Which spark plug reference is included?
A: The primary listed reference is 5019. ITV16TT and other catalog numbers may appear as cross-references, so confirm the exact engine application.

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

Q: Should all supplied coils and plugs be installed at once?
A: Only if the exact engine and service plan call for that quantity. Do not install six positions on an L4 or L5 engine.

Q: Can I use a generic spark plug gap or torque value?
A: No. Follow the exact vehicle and engine service specification.

Q: What should I compare before ordering?
A: Compare year, model, engine size, cylinder count, connector keying, coil body, boot profile and printed references.

Q: What if the engine still misfires after service?
A: Continue diagnosis of wiring, injectors, fuel delivery, intake or vacuum 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.

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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