Pynccid Ignition Coil Pack Set for 5.3L V8 Chevy/GMC — 8 Red UF413 Square Coils, OE Fit

Pynccid's red UF413 ignition coil pack set of 8 replaces OE 12570616 for 5.3L V8 Chevy and GMC vehicles, delivering reliable spark energy and a direct, plug-and-play fit.

These Pynccid ignition coils are engineered specifically for 5.3L V8 engines used in 2007–2011 Chevy Silverado 1500, Avalanche, Tahoe, Suburban and GMC Yukon and Sierra models. The set includes eight square-shaped UF413 coils (not the round UF414 style), designed to match factory mounting and electrical characteristics while offering improved winding quality and material durability. The coils come in a red finish for easy visual identification during service and are intended as a straightforward OE-style replacement that preserves original fitment and routing.

How do these coils improve ignition performance?

The Pynccid UF413 coils use upgraded copper windings and robust insulation to provide a steadier, higher-energy spark compared with many worn factory coils. Better spark consistency helps combustion become more complete, which can reduce misfires and support smoother running under load.

• Premium German copper windings for stable spark delivery
• Higher discharge energy than many stock coils
• Corrosion-resistant terminals to maintain conductivity over time
• Polyester rubber encapsulation for heat and vibration resistance

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

Yes—these coils are engineered as direct OE replacements for part numbers UF413 and 12570616 and are shaped to match square-coil mounts used on those model years. Confirm your vehicle uses square UF413 coils (not round UF414) before ordering to ensure correct fit.

• Direct replacement for 12570616 / UF413 specifications
• Designed for 2007–2011 Silverado, Avalanche, Tahoe, Suburban, Yukon, Sierra
• Plug-and-play electrical connector and mounting points
• Ships as a full set of 8 for all cylinders on 5.3L V8 engines

How difficult is installation and what should I prepare?

Installation is intended to be straightforward for a DIYer familiar with basic engine work: unplug the old coils, remove mounting bolts, and reverse the steps with the new Pynccid coils. A few simple precautions extend service life and ease reassembly.

• Use silicone spray on rubber seals to prevent cracking during installation
• Ensure all electrical connectors are clean and securely seated
• Torque mounting bolts to factory specs to avoid overtightening
• Check for codes after installation and clear if necessary

How durable are these coils under real-world conditions?

Pynccid coils are built for long service with materials chosen to resist heat, moisture and vibration commonly found in engine bays. The encapsulation and corrosion-resistant terminals help maintain reliable spark delivery through heavy use and varying weather.

• Durable polyester rubber encapsulation for heat and vibration protection
• Corrosion-resistant terminals for long-term electrical reliability
• Engineered to reduce misfire frequency and maintain consistent starts
• Backed by 1-year product quality support from the manufacturer

Who is this for? The Pynccid red UF413 ignition coil pack set of 8 is ideal for owners and technicians servicing 5.3L V8 Chevy or GMC trucks and SUVs from 2007–2011 who want a direct OE-fit replacement with upgraded winding and materials. It suits DIY mechanics replacing an entire bank of coils, professional shops performing tune-ups, or anyone replacing failed or aging coils who prefers a visible red finish for quick identification. Verify your vehicle uses the UF413 square coil shape before purchasing to ensure exact compatibility.