Pynccid 8-Piece UF413 Square Ignition Coil Pack for 5.3L V8 (2007–2011) — Red, OE-Fit, Copper Windings

Pynccid's red 8-piece UF413 square ignition coil pack replaces OE 12570616 to restore reliable spark and improved throttle response for 5.3L V8 Chevy and GMC trucks (2007–2011).

These eight square (UF413) ignition coils are engineered as direct OE-fit replacements for Chevy Silverado 1500, Avalanche, Tahoe, Suburban and GMC Yukon and Sierra models powered by the 5.3L V8. Built with heavy-gauge copper windings, corrosion-resistant terminals and a polyester rubber encapsulation, the set is intended to deliver steady spark energy, reduce misfires and simplify a plug-and-play replacement. The kit includes coils matching OEM form and function for part number 12570616 and comes with a one-year warranty and customer support.

How do these coils improve everyday driving?

The Pynccid UF413 coils are designed to give more consistent discharge energy than many aging factory units, which can translate into smoother idle, fewer misfires and crisper acceleration. Improved ignition stability helps the engine run more efficiently across typical driving conditions.

• Premium copper winding for stronger, stable spark delivery
• Better combustion consistency reduces rough idle and hesitation
• Corrosion-resistant terminals for longer, trouble-free operation
• Pack of eight replaces all cylinders for balanced performance

Will these coils fit my 2007–2011 Chevy/GMC 5.3L V8?

Yes — these coils are modeled as exact OE replacements for the square UF413 design and match part number 12570616. Confirm your existing coil is the square UF413 shape (not the round UF414) before purchase to ensure proper fitment.

• Direct-fit for 2007–2011 Chevy/GMC 5.3L V8 applications
• Works with Silverado, Avalanche, Tahoe, Suburban, Yukon, Sierra
• Check coil shape: UF413 (square) required, not UF414 (round)
• Plug-and-play installation for straightforward replacement

What should I expect during installation and maintenance?

Installation is straightforward for anyone comfortable with basic engine work: remove the old coil packs and replace them with these UF413 units, tightening to OE torque specs. To protect the rubber components and extend service life, a light application of silicone spray on the boot during assembly is recommended.

• Plug-and-play design with OE-style mounting points
• Use silicone spray on boots to prevent rubber cracking
• Tighten to factory torque and inspect wiring harnesses during install
• No special programming or calibration required

How does build quality affect long-term performance?

These coils use robust materials to maintain consistent spark under varied driving loads and climates. Polyester encapsulation and corrosion-resistant terminals help protect internal components from moisture and vibration, which reduces premature failures common with older coils.

• Durable polyester rubber encapsulation resists environmental wear
• Corrosion-resistant terminals minimize electrical loss over time
• High-quality construction aimed at longer service intervals
• One-year warranty for added purchase confidence

Who this is for: These Pynccid UF413 square ignition coils are ideal for owners and DIY mechanics who need a full-coil replacement for 5.3L V8 Chevy and GMC trucks from 2007 to 2011. If your vehicle shows misfires, rough idle, reduced throttle response or if the factory coils are aged, this eight-coil kit offers an affordable, direct-fit option to restore even firing and dependable starts. Confirm your coil shape is square (UF413) before ordering for guaranteed compatibility.