Nakkaa UF271 Ignition Coil Kit 8-Pack — Double-Iridium Spark Plugs & High-Performance Wires for 1999–2007 GM V8

This all-in-one ignition set includes eight UF271-style ignition coils, eight double-iridium spark plugs, and a full set of high-quality ignition wires designed as direct-fit replacements for common GM V8 applications. The components are engineered to restore reliable spark delivery, improved throttle response, and consistent starting for older vehicles that need full ignition-system service. Below you’ll find answers to the most common buyer questions, plus specific application and part-number cross-reference details so you can confirm fit before purchase.

Will these ignition parts fit my truck or SUV?

These Nakkaa components are made to replace original-equipment parts used in many General Motors vehicles from roughly 1999 through 2007. Use the cross-reference numbers and vehicle list to verify compatibility with your model and year.

• Compatible vehicle families: Savana, Sierra, Yukon XL, Suburban, Tahoe, Avalanche, Express, Silverado, Trailblazer, H2, SSR, Mercruiser (selected years).
• Coverage years include 1999–2007 across various V8 platforms; check engine and ignition coil style against your existing parts.
• Cross-reference part numbers provided for coils, plugs, and wires to aid fit confirmation.

Which factory part numbers does this Nakkaa kit replace?

The kit lists multiple OE and aftermarket references so you can match it to the parts your vehicle currently uses. Cross-references help ensure you get the correct replacements without guessing.

• Ignition coils: compatible with part numbers such as 12556893, 12558693, 12570553, 3859078, 392889925, D581, UF-271, 38590782.
• Spark plugs: cross-replaces plug numbers like 41-962 and 19299585; plugs use double-iridium electrodes for longer service life.
• Wires: matches wire references M8-48322R, 9059, 9748HH/UU/RR series, and 88862385 for direct-fit routing and connectors.

What performance or durability benefits can I expect from double-iridium plugs and the included coils/wires?

Double-iridium spark plugs use fine, wear-resistant electrodes to maintain consistent spark over longer intervals compared with standard plugs. Paired with matched coils and wires, the set helps reduce misfires and uneven idle when installed correctly.

• Double-iridium plugs resist erosion and can extend service intervals compared to conventional plugs.
• UF271-style coils restore correct ignition voltage delivery for each cylinder in V8 setups.
• High-quality wires maintain signal integrity and proper resistance for reliable spark timing.

How easy is installation and what should I check during swap?

Installation is straightforward for anyone comfortable with basic engine work—disconnecting the battery, removing old coils/plugs/wires, and fitting the replacements in the original locations. Take care to torque plugs to manufacturer specs and route wires to avoid heat sources or moving parts.

• Recommended tools: ratchet, torque wrench, spark-plug socket, dielectric grease, and basic hand tools.
• Inspect coil connectors and wire boots for secure fit and no corrosion before final assembly.
• Recheck spark plug gaps and torque to spec to avoid misfires or thread damage.

Who is this for? This Nakkaa ignition kit is aimed at owners and mechanics servicing late‑1990s to mid‑2000s GM V8 vehicles who want a full ignition-system refresh with matched components. It’s ideal for vehicles showing age-related ignition symptoms—hard starting, rough idle, or intermittent misfires—or for anyone performing scheduled maintenance who prefers replacing coils, plugs, and wires together for consistent performance and simplified future troubleshooting.