Ignition Coil & Spark Plug for Chevy Monte Carlo (2006-2007) 5.3L V8 (Round Style)
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High-Energy Ignition Coil & Spark Plug Kit for 2006-2007 Chevrolet Monte Carlo
Replaces deteriorating factory ignition components with a high-output 32,000V coil and matched plug setup to eliminate misfires, restore fuel efficiency, and ensure consistent spark delivery.
The Stock Monte Carlo LS4 Ignition Shortcomings
The factory GM D514A round-style coils and standard plug wires on the transverse 5.3L LS4 V8 are prone to thermal degradation over time. As the W-body engine bay experiences repeated heat cycling, the OEM coil epoxy breaks down, leading to internal short-circuiting. Furthermore, the stock primary resistance fluctuates as underhood temperatures rise, causing intermittent misfires, rough idle, and degraded throttle response, especially under load.
The Engineering Solution
This comprehensive ignition package integrates eight round-body UF414 coils, pre-gapped spark plugs, and durable 748UU plug wires to resolve these thermal vulnerabilities. The upgraded ignition coils feature advanced epoxy internal construction and superior copper wire internals, delivering a maximum voltage of 32,000V—a 20% increase in spark energy over original equipment. With a highly efficient 61:1 turns ratio and a primary resistance of 0.660 ohms, these direct-replacement 12V units ensure robust discharge energy, complete combustion, and long-term reliability.
Technical Specifications
| Fitment | 2006-2007 Chevrolet Monte Carlo |
| Engine / Chassis | LS4 5.3L V8 / W-Body |
| Stock Output | 303 hp / 323 lb-ft (Approx) |
| Part Number | UF414, D514A, 41962, 748UU |
Compatibility
- Cadillac Escalade
- Chevrolet Avalanche
- Chevrolet Silverado
- Chevrolet Suburban
- Chevrolet Express
- Chevrolet Tahoe
- Chevrolet Trailblazer
- GMC Savana
- GMC Yukon
- Hummer H3
- Note: Only applicable to vehicles requiring round-style coils (UF414/D514A), not suitable for square coil (UF413/D510C) applications.
The Chevrolet Muscle Standard
Restoring the ignition system on your LS4-powered Monte Carlo ensures that iconic V8 power delivery remains uninterrupted. Reliable spark translates directly to smooth acceleration, optimal combustion, and maximum factory torque output.
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