Vehicle Compatibility
This ignition kit fits numerous GM V8 applications equipped with square UF271 ignition coils.
Chevrolet
Compatible with select:
- Avalanche 1500 (2002–2006)
- Avalanche 2500 (2003–2006)
- Silverado 1500 (1999–2006)
- Silverado 2500 (1999–2007)
- Silverado 3500 (2001–2007)
- Suburban 1500 (2000–2006)
- Suburban 2500 (2000–2006)
- Tahoe (2000–2006)
- Express 2500 (2003–2005)
- Express 3500 (2003–2004)
- Monte Carlo (2006)
- SSR (2003–2004)
- TrailBlazer (2003–2004)
GMC
Compatible with select:
- Sierra 1500
- Sierra 2500
- Sierra 3500
- Yukon
- Yukon XL
- Savana 1500
- Savana 2500
- Savana 3500
- Envoy
Cadillac
- Escalade (2002–2006)
Hummer
- H2 (2003–2007)
Other Applications
Compatible with select:
- MerCruiser marine engines
- Workhorse chassis
- Workhorse FasTrack models
Always verify your VIN, engine size, and ignition coil style before ordering.
Important Compatibility Warning
This kit is designed only for vehicles equipped with UF271 square ignition coils.
It will NOT fit engines equipped with UF262 round ignition coils.
Before purchasing:
- Visually inspect your existing ignition coils.
- Confirm they are square, not round.
- Verify the replacement part number.
Taking a few minutes to verify coil style can prevent installation issues.
Compatible Replacement Part Numbers
This kit replaces numerous OEM and aftermarket part numbers, including:
- UF271
- UF-271
- 12556893
- 12558693
- 12570553
- D581
- 3859078
- 41-962
- 9059
- 9748HH
- 9748UU
- 9748RR
- 88862385
- M8-48322R
Key Features
Complete Ignition System Replacement
By replacing ignition coils, spark plugs, and wires simultaneously, the kit restores balanced ignition performance throughout the engine.
Benefits include:
- Strong spark energy
- Smooth idle
- Improved throttle response
- Reliable cold starts
- Better fuel economy
Replacing the complete ignition system often eliminates intermittent problems caused by mixing old and new components.
Premium UF271 Square Ignition Coils
The included ignition coils are engineered as direct replacements for factory square coils.
Advantages include:
- High-output spark energy
- Reliable operation
- OEM-style installation
- Consistent cylinder performance
Fresh ignition coils help restore proper combustion under both light and heavy engine loads.
Platinum 41-962 Spark Plugs
The included platinum spark plugs provide:
- Longer service life
- Stable spark output
- Reliable combustion
- Reduced maintenance intervals
Platinum electrodes resist wear better than conventional copper spark plugs.
Complete Ignition Wire Set
The included ignition wires complete the ignition system by providing reliable voltage transfer from each coil to its spark plug.
Benefits include:
- Improved spark delivery
- Better insulation
- Reduced voltage leakage
- Consistent ignition performance
Replacing aging wires helps eliminate common ignition-related drivability problems.
Common Symptoms of Ignition Failure
If your GM V8 is experiencing:
- Engine misfires
- Rough idle
- Hard starting
- Hesitation
- Reduced fuel economy
- Check Engine Light
- Poor towing performance
A complete ignition system replacement may restore normal operation.
Installation Tips
For best results:
- Confirm your vehicle uses UF271 square coils.
- Replace one ignition coil and wire at a time.
- Install the included platinum spark plugs using factory torque specifications.
- Fully seat every ignition wire.
- Verify all connectors before starting the engine.
Taking a systematic approach helps avoid wire routing mistakes.
Warranty Coverage
The manufacturer backs the ignition kit with a 1-year warranty, providing protection against manufacturing defects under normal operating conditions.
Final Verdict
The UF271 Complete Ignition Coil, Spark Plug & Wire Kit offers exceptional value for owners of compatible GM GMT800 trucks, SUVs, vans, and commercial vehicles. By replacing every major ignition component at once, it restores dependable spark delivery, improves combustion efficiency, and simplifies maintenance.
Just remember one critical detail before ordering: verify your truck uses square UF271 coils rather than round UF262 coils. Once compatibility is confirmed, this kit provides an affordable, all-in-one solution for restoring factory ignition performance.
Frequently Asked Questions
How do I know if my truck uses UF271 or UF262 coils?
The easiest method is to visually inspect your current ignition coils. UF271 coils have a square housing, while UF262 coils have a round housing.
Why replace the entire ignition system at once?
Replacing coils, spark plugs, and wires together restores balanced spark energy across every cylinder and reduces the chance of future ignition-related failures.
Are platinum spark plugs better than copper?
Platinum spark plugs generally last longer and maintain more consistent ignition performance over extended service intervals.
Is this a direct-fit kit?
Yes. The kit is designed as a direct replacement for compatible GM vehicles equipped with UF271 square ignition coils.
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