Pynccid ignition coil pack for 5.3L V8 Chevy/GMC — Red 8‑Pack UF413, OE-fit with upgraded copper windings

Pynccidred set of eight UF413 square ignition coils replaces OE 12570616 to restore spark performance in 5.3L V8 Chevy and GMC trucks and SUVs from 2007 to 2011.

If your 5.3L V8 Silverado, Avalanche, Tahoe, Suburban, Yukon or Sierra has rough idle, misfires, or a check-engine light related to ignition coils, this complete eight-coil package provides a direct, bolt-in replacement engineered for the same fit and firing sequence as the original equipment. The square UF413 design is specified for applicable GM engines and delivers stronger spark energy through German copper windings and durable materials to improve combustion stability under everyday driving and towing loads.

Will these coils physically fit my 200711 Chevy or GMC 5.3L V8?

These Pynccid UF413 coils are manufactured to match OE dimensions and mounting points for part number 12570616, designed specifically for 200711 GM 5.3L V8 applications. They use the square UF413 footprint, not the round UF414, so verify coil shape on your engine before ordering.

• Direct OE-style replacement for 12570616 and UF413-configured ignitions.
• Plug-and-play electrical connectors and bolt locations for DIY installation.
• Applicable to Silverado 1500, Avalanche, Tahoe, Suburban, Yukon, Sierra models listed.

How do these coils affect engine performance and reliability?

Upgraded windings and improved encapsulation give these coils more consistent discharge energy than many worn factory units, which can reduce misfires and improve throttle response. While not a horsepower guarantee, stronger, steadier sparks help the engine burn fuel more completely, particularly on engines showing signs of ignition-related degradation.

• German copper windings for stable, repeatable spark output under load.
• Polyester rubber encapsulation resists heat and vibration for longer life.
• Corrosion-resistant terminals to preserve electrical contact quality.

What should I know about installation and maintenance?

Installation is straightforward: remove the old coils and bolt the Pynccid UF413 units into the same positions. For best results, lightly lubricate the rubber boots with silicone spray during reassembly to prevent cracking and ensure proper sealing between coil boot and spark plug.

• Simple bolt-on swap with original connectors and mounting points.
• Use silicone spray on boots to prevent future rubber degradation.
• Check torque specs and wiring condition during replacement to avoid new faults.

Are these coils durable enough for heavy use and varied climates?

The Pynccid set is built for everyday and demanding driving, with materials chosen for resilience against heat, vibration and moisture. The combination of robust encapsulation and corrosion-resistant hardware helps maintain performance across seasons and load conditions.

• Durable construction to withstand towing and long-haul driving stresses.
• Sealed design reduces moisture intrusion and electrical leakage risk.
• Backed by 1-year product quality support from Pynccid for peace of mind.

Who is this for: this red Pynccid UF413 coil set is aimed at owners and technicians of 200711 Chevy Silverado 1500, Avalanche, Tahoe, Suburban and GMC Yukon/Sierra 5.3L V8 vehicles who need a full ignition coil replacement. It's the right choice if you want a direct OE-fit upgrade with improved spark consistency, straightforward installation for DIY mechanics, and a durable build for trucks and SUVs used for daily driving, towing, or seasonal demands. Confirm your engine uses square UF413 coils (not round UF414) before purchase to ensure correct fitment.