Ignition Coil & Spark Plug for GMC Canyon (2009-2012) V8 (Round Style)
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High-Output Ignition Coil & Spark Plug Kit for 2009-2012 GMC Canyon V8
This complete direct-fit ignition upgrade package replaces aging, high-resistance factory components to deliver a stronger, more consistent spark for improved combustion efficiency and reliable starts.
The Stock GMT355 Ignition System Shortcomings
Over time, the factory 5.3L V8 ignition coils degrade rapidly due to extreme under-hood heat cycles and thermal shock. This constant expansion and contraction often cracks the factory epoxy casing, leading to severe voltage leaks, erratic misfires under load, and reduced fuel efficiency. Furthermore, OEM coils frequently suffer from high secondary resistance as internal windings deteriorate, resulting in a weak spark that limits potential horsepower and torque output during heavy acceleration or demanding towing situations.
The Engineering Solution
This comprehensive ignition overhaul utilizes upgraded D514A/UF414 round-style coils engineered with highly durable internal copper wiring and premium epoxy internals to combat heat soak. These precision-engineered coils generate up to 20% more discharge energy than OE components, achieving a maximum voltage of 32,000V with a highly efficient 61:1 turns ratio. Paired with the included 41962 spark plugs and 748UU high-dielectric silicone plug wires, this kit effectively eliminates parasitic voltage loss. The result is a cleaner burn, restored throttle response, and a stable idle across all RPM ranges.
Technical Specifications
| Fitment | 2009-2012 GMC Canyon (V8 Models) |
| Engine / Chassis | 5.3L LS V8 (LH8/LH9) / GMT355 |
| Stock Output | 300 hp / 320 lb-ft (Approx) |
| Part Number | UF414, D514A, 41962, 748UU |
Compatibility
Note: Only applicable to vehicles requiring the ROUND style coils (UF414/D514A). Not suitable for square body coils (UF413/D510C). Please verify your original coil shape before ordering.
- Cadillac Escalade
- Chevrolet Avalanche
- Chevrolet Silverado
- Chevrolet Suburban
- Chevrolet Express
- Chevrolet Tahoe
- Chevrolet Trailblazer
- GMC Savana
- GMC Yukon
- Hummer H3
The GMC Durability Standard
Designed to withstand extreme towing conditions, payload demands, and harsh environments, this ignition overhaul ensures your V8-powered Canyon maintains reliable power delivery and uncompromised mechanical performance when it matters most.
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