Pynccid ignition coil pack set — 8-piece UF413 square coils for 5.3L V8 (2007–2011), red, OE-fit performance

This eight-piece ignition coil kit from Pynccid is engineered for 5.3L V8 GM engines in Silverado 1500, Avalanche, Tahoe, Suburban, Yukon and Sierra trucks and SUVs from 2007–2011. Each coil uses a square UF413 housing, German copper windings and corrosion-resistant terminals to deliver reliable ignition energy as an OE-style replacement. The red finish identifies the Pynccid performance line and helps technicians quickly match components during service.

How does this coil set improve ignition consistency?

The Pynccid UF413 coils are built to provide steady discharge energy and reduce misfires compared with worn or aging factory coils. Improved spark stability helps the combustion process remain uniform across cylinders under varied driving conditions.

• Premium German copper windings for stable electrical transfer.
• Polyester rubber encapsulation resists degradation from heat and vibration.
• Corrosion-resistant terminals maintain contact quality over time.
• Designed to deliver higher discharge energy than many OEM aged coils.

Will these coils fit my 2007–2011 GM 5.3L engine?

Yes—these coils are specifically shaped as UF413 square units and match OE part 12570616 in fit and mounting. They are a direct, plug-and-play replacement when your vehicle uses the square-style coil; they are not compatible with round (UF414) coils.

• Exact OE-style footprint for 2007–2011 Chevy/GMC 5.3L V8 models.
• Replaces part numbers 12570616 and UF413 without modification.
• Plug-and-play electrical connector and mounting points for easy swap.
• Confirm coil shape (square UF413) before purchase to ensure compatibility.

How difficult is installation and what maintenance helps longevity?

Installation is straightforward for a DIYer or professional—coils mount directly to the spark plug wells and connect with the stock harness. Routine care during installation and periodic inspection will help the coils remain serviceable for years.

• Simple bolt-on replacement with original connector interface.
• Use a silicone spray on rubber boots during assembly to prevent cracking.
• Inspect electrical connectors and boots for contaminants or oil before reinstallation.
• One-year warranty from Pynccid provides added purchase confidence.

What performance and durability features should I expect?

Pynccid focuses on consistent spark delivery and robust materials to handle heavy-duty driving and variable climates. The red UF413 coils blend performance-minded construction with OE fitment, giving a reliable restoration or upgrade path for ignition systems showing wear.

• High-discharge capability for efficient combustion across load ranges.
• Durable polyester encapsulation resists heat and moisture intrusion.
• Terminals treated to resist corrosion and ensure long-term connectivity.
• Pack of eight covers a full V8 ignition system replacement.

Who is this for? The Pynccid red UF413 eight-coil kit is aimed at owners and technicians working on 5.3L V8 GM trucks and SUVs from 2007 through 2011 who need a dependable, OE-form ignition coil replacement. Choose this set if your vehicle uses square-shaped UF413 coils, you want a complete ignition system refresh, or you’re seeking improved spark consistency over aging factory coils. If you are unsure about coil shape or compatibility, inspect the existing coil housing or consult a mechanic before ordering.