BDFHYK UF262 ignition coil and 3186 spark plug kit for listed GMC Chevrolet Buick Hummer and Isuzu applications

UF262 D585 ignition coil pack and 3186 spark plug service components

BDFHYK ignition coils and spark plugs with UF262 and 3186 references

UF262 coil and 3186 spark plug kit for GMC Sierra Savana Yukon and Envoy applications

BDFHYK UF262 ignition coil kit for Chevrolet Silverado Suburban Express and Avalanche applications

3186 spark plug and UF262 ignition coil kit for Buick Rainier Hummer H2 and Isuzu Ascender

BDFHYK OE-style UF262 ignition coil and 3186 spark plug service components

BDFHYK 8 Ignition Coil UF262 and 8 Spark Plug 3186 for GMC Sierra, Savana, Yukon, Envoy; Chevrolet Silverado, Suburban

$111.49

Product Detail

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07063BK-CK
OE Number Coil: C1251, D585, 5C1082, E254, E254P, 52-1647, GN10119, IC413, 10457730, 19005218, 8-10457-730-0, UF-262
OE Number For Spark plug:3186

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UF262 Ignition Coil & 3186 Spark Plug Kit for GMC, Chevrolet, Buick, Hummer & Isuzu

This BDFHYK ignition service kit uses the UF262 ignition coil reference with the 3186 iridium spark plug reference for the listed truck and SUV applications. Rough idle, hesitation, hard starting, or a cylinder-specific misfire may involve ignition components, but similar symptoms can also result from wiring, fuel delivery, intake leaks, compression, timing, sensors, or other engine conditions.

UF262 / 3186 Vehicle Applications

1999–2006 GMC Sierra, Savana, Yukon, and Envoy
2003–2007 Chevrolet Silverado, Suburban, Express, and Avalanche 1500 / 2500 / 3500
2004–2005 Buick Rainier
2003–2007 Hummer H2
2003–2004 Isuzu Ascender

Confirm the exact engine and compare the original ignition coil and spark plug references before ordering.

UF262 Ignition Coil References

References include UF262, D585, C1251, 5C1082, E254, GN10119, IC413, 10457730, and 19005218.

3186 Spark Plug Reference

The spark plug reference for this kit is 3186.

Installation Checks

Inspect wiring and connectors before installation.
Check plug wells and boots for oil, moisture, or corrosion.
Compare the replacement and removed coil body, connector, and boot profile.
Use vehicle-specific service information for spark plug gap and tightening torque.

If a Misfire Remains

Continue diagnosis of fuel, air, electrical, compression, timing, and mechanical conditions rather than assuming the ignition coil is the only possible cause.

Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil & Spark Plug Kit
Ignition Coil Reference	UF262 / D585
Spark Plug Reference	3186
Listed Applications	GMC Sierra/Savana/Yukon/Envoy; Chevrolet Silverado/Suburban/Express/Avalanche; Buick Rainier; Hummer H2; Isuzu Ascender
Fitment Check	Confirm exact model year, engine, original coil reference, and spark plug reference before ordering.

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: Which vehicles are listed for this UF262 and 3186 kit? A: Listed applications include select GMC Sierra, Savana, Yukon and Envoy; Chevrolet Silverado, Suburban, Express and Avalanche; Buick Rainier; Hummer H2; and Isuzu Ascender.

Q: Which ignition coil references should I compare? A: UF262 and D585 are key coil references. Additional references include C1251, 5C1082, E254, GN10119, IC413, 10457730, and 19005218.

Q: Which spark plug reference is used? A: The spark plug reference for this product is 3186.

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

Q: Should spark plugs be checked during coil service? A: Yes. Inspect plug condition and compare the plug reference for the exact engine.

Q: Should all ignition coils be replaced together? A: Not automatically. Replacement quantity should follow diagnosis, component condition, service history, labor access, and exact engine requirements.

Q: What should be compared before installation? A: Compare coil body, connector keying, mounting points, boot profile, and spark plug reference with the removed parts.

Q: What if there is oil or moisture in a spark plug well? A: Correct the contamination source and clean the plug well before judging the replacement coil.

Q: What spark plug gap and torque should be used? A: Use the exact vehicle service specification because gap and torque are not universal.

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

Q: Are these factory-branded OEM parts? A: No. These are BDFHYK OE-style aftermarket service components.

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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