BDFHYK UF742 ignition coil and ILTR5B11 iridium spark plug kit for Chevrolet and GMC V8

Eight UF742 ignition coils and eight ILTR5B11 iridium spark plugs for listed V8 applications

UF742 coil and ILTR5B11 spark plug kit for Chevrolet Camaro and Corvette 6.2L V8

BDFHYK UF742 ignition coil kit for Chevrolet Suburban 5.3L V8 applications

UF742 ignition coils and ILTR5B11 spark plugs for Silverado 1500 5.3L and 6.2L V8

UF742 coil pack and ILTR5B11 iridium plugs for GMC Sierra 1500 V8 applications

BDFHYK UF742 ignition coil reference kit with ILTR5B11 spark plugs for Chevrolet GMC V8

BDFHYK 8 Ignition Coil UF742 and 8 Iridium Spark Plug ILTR5B11 for Chevrolet Suburban, Camaro, Corvette 2015-2018

$100.49

Product Detail

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07443-CK
OE Number Coil: UF742, C866, 5C1876, 12621750, 12658183, 12674754, 12699383, 12708496, C1819
OE Number For Spark plug:ILTR5B11

🚚 Estimated Delivery: Calculating... · Ships by Calculating... · Free Shipping

Trust & Assurance

Free Shipping · 2–7 Business Days

12-Month Warranty

30-Day Return

Secured Payment

UF742 Ignition Coil & ILTR5B11 Iridium Spark Plug Kit for Chevrolet & GMC V8

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 UF742 ignition coil and ILTR5B11 iridium spark plug kit contains eight coils and eight plugs for listed Chevrolet and GMC V8 applications. Engine size matters: Camaro and Corvette applications in this group use 6.2L V8 engines, while Suburban and pickup applications can use different V8 displacements.

UF742 / ILTR5B11 Chevrolet & GMC V8 Fitment

Chevrolet Camaro 2016-2018 — listed 6.2L V8 applications
Chevrolet Corvette 2014-2018 — listed 6.2L V8 applications
Chevrolet Suburban 2015-2018 — listed 5.3L V8 applications
Chevrolet Silverado 1500 2014-2018 — listed 5.3L and 6.2L V8 applications
GMC Sierra 1500 2014-2018 — listed 5.3L and 6.2L V8 applications

Fitment correction: Do not identify Camaro or Corvette in this application group as 5.3L. Confirm the exact 6.2L V8 engine and original ignition components before ordering.

What Is Included in the UF742 / ILTR5B11 V8 Kit?

8 ignition coils
8 iridium spark plugs, reference ILTR5B11

UF742 Ignition Coil Reference Numbers

UF742, C866, 5C1876, 12621750, 12658183, 12674754, 12699383, 12708496, C1819

Common Ignition Service Scenarios

Misfire or rough idle after diagnostic inspection
Hard starting or hesitation with worn ignition components
Full V8 ignition service when coil and spark plug condition justifies replacement

How to Confirm UF742 / ILTR5B11 Fitment Before Ordering

Confirm year, model and exact 5.3L or 6.2L V8 engine.
Compare the original coil connector, body, boot profile, mounting and printed reference numbers.
Confirm ILTR5B11 for the exact engine application.
Verify an eight-position V8 service quantity before installation.
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	UF742
Spark Plug Reference	ILTR5B11
Spark Plug Construction	Iridium electrode with ceramic insulator
Package Quantity	8 Ignition Coils + 8 Iridium Spark Plugs
Includes	8 Ignition Coils + 8 Iridium Spark Plugs
Engine Applications	Listed 5.3L V8 and 6.2L V8 applications
Listed Vehicle Fitment	Chevrolet Camaro 2016-2018 6.2L V8; Corvette 2014-2018 6.2L V8; Suburban 2015-2018 5.3L V8; Silverado 1500 2014-2018 listed 5.3L / 6.2L V8; GMC Sierra 1500 2014-2018 listed 5.3L / 6.2L V8
OE / Interchange References	UF742, C866, 5C1876, 12621750, 12658183, 12674754, 12699383, 12708496, C1819
Fitment Checks	Confirm exact year, model, 5.3L or 6.2L V8 engine, connector, coil body, boot profile and UF742 / ILTR5B11 references
Important Note	Camaro and Corvette applications in this group are listed with 6.2L V8 engines, not 5.3L V8.

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 UF742 and ILTR5B11 kit fit my Chevrolet or GMC?
A: Confirm the exact listed year, model, 5.3L or 6.2L V8 engine, connector and reference numbers before ordering.

Q: What is included in this kit?
A: The package includes 8 ignition coils and 8 ILTR5B11 iridium spark plugs for listed V8 applications.

Q: Does the listed Camaro use a 5.3L V8?
A: No. The listed Camaro applications in this group are 2016-2018 6.2L V8 applications.

Q: Does the listed Corvette use a 5.3L V8?
A: No. The listed Corvette applications in this group are 2014-2018 6.2L V8 applications.

Q: Which ignition coil references should I compare?
A: Compare UF742 and listed references such as C866, 12621750, 12658183, 12674754, 12699383 and 12708496 where applicable.

Q: Which spark plug reference is included?
A: The listed spark plug reference is ILTR5B11 with an iridium electrode and ceramic insulator.

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

Q: Should all eight coils and spark plugs be replaced together?
A: That depends on diagnosis, age, mileage and component condition. A full V8 set can be practical when the service plan supports it.

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

Q: What should I compare before ordering?
A: Compare year, model, engine displacement, connector keying, coil body, mounting point, 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

Business Hours:

Mon–Fri 9:00–18:00 (GMT+8)

Mon–Fri 19:00–04:00 (UTC−6 / CST)

Manufacturing Standards

Direct Factory Supply, Cost Saving
Integrated R&D, production, and warehousing. Eliminate middleman markups: same quality at lower prices, superior quality at same prices.

Precision Inspection, Commitment to Excellence
Rigorous inspection process, international certification standards. Each product includes individual inspection.