FAERSI Ignition Coil Pack Set for Chevy GMC V8 — 8-Pack Direct-Fit Replacement (UF271/D581)

FAERSI’s set of eight ignition coil packs is a direct-fit replacement engineered to restore ignition performance on compatible Chevy, GMC and Cadillac V8 engines.

If your V8-powered vehicle is showing misfires, rough idle, reduced fuel efficiency, or a check engine light related to ignition circuits, replacing the coil packs in one service can return reliable spark delivery and smoother operation. This FAERSI kit is designed to match OEM fitment and electrical requirements for many GM vehicles that originally used part numbers such as UF271, D581 and 5C1083.

Which models and years will these FAERSI coil packs fit?

These coils are manufactured to replace several common OE references and fit a broad range of GM trucks and SUVs. Before ordering, compare the original coil’s shape and OE number on your vehicle to ensure compatibility.

• Common fitment: Chevy Silverado (1999–2008 ranges), Suburban, Tahoe, Avalanche (2002–2006 listed), and Express 3500
• Also compatible with: GMC Sierra, Yukon, Savana, Cadillac Escalade, H2, Isuzu NPR in certain years
• Replaces OE numbers such as D581, 12558693, 12556893, UF271, CUF271, 5C1083 and related cross-references

How do FAERSI coil packs improve engine performance?

By delivering a strong, consistent high-voltage pulse to each spark plug, these coils help restore complete combustion and stable engine operation. Replacing worn or failing coils reduces misfires, can improve throttle response, and helps the engine run smoother under load.

• Designed to meet OEM electrical output and fitment for direct replacement
• High-quality conductors and insulation for stable spark delivery
• Resistant to corrosion and abrasion for longer service life

What are the materials and quality features of the kit?

FAERSI uses upgraded wire materials and protective coatings to help the coils resist heat and vibration typical of engine bays. The design emphasizes reliable electrical resistance and thermal durability without altering factory mounting points or harness connections.

• Copper conductors and robust insulation for efficient energy transfer
• Protective coatings to reduce environmental corrosion and abrasion
• Built to OEM performance specifications for emissions-compliance and energy output

Is it better to replace all eight coils at once?

Replacing the entire set is recommended when one coil fails, because the remaining coils often have similar age and wear. Installing a full set reduces the chance of repeated service visits and helps maintain balanced performance across all cylinders.

• Prevents future cascading failures and uneven cylinder performance
• Simplifies diagnostics—eliminates coil variability when troubleshooting
• One-year unlimited-mileage FAERSI guarantee included for peace of mind

Who is this for: This set is intended for owners and technicians who need a reliable, cost-effective ignition coil replacement for GM V8 trucks and SUVs that use the listed OE cross-references. It’s suitable for routine maintenance, troubleshooting persistent misfires, or restoring performance after long-term use. Always verify your vehicle’s original coil part number and connector style before purchase to ensure a correct match.