Nakkaa UF271 Ignition Coil 8-Pack Kit with Double-Iridium Spark Plugs & Wires — GM V8 (1999–2007)

Nakkaa’s 8-pack kit bundles UF271 ignition coils, double-iridium spark plugs and matched spark plug wires into a single replacement package engineered for GM V8 trucks and SUVs from 1999–2007.

This comprehensive ignition service kit groups components that typically fail together: coil packs, premium double-iridium plugs and high-quality plug wires. It’s designed to be a direct-fit service replacement for many Chevrolet, GMC and related models, simplifying maintenance and helping restore reliable ignition performance without hunting down multiple parts numbers.

Which vehicles and part numbers does this kit replace?

The kit is built to cover a wide range of GM trucks and SUVs from the late 1990s through the mid-2000s. It replaces common OEM part numbers for coils, plugs and wires so you can swap the whole ignition set in one job.

• Compatible models include Savana, Sierra, Yukon XL, Avalanche, Express, Silverado, Suburban, Tahoe, Trailblazer, H2, SSR and Mercruiser applications (1999–2007 ranges).
• Coil replacements: 12556893, 12558693, 12570553, 3859078, 392889925, D581, UF-271, 38590782.
• Spark plug cross-references include 41-962 and 19299585 (double-iridium electrodes for longevity).
• Wire equivalents: M8-48322R, 9059, 9748hh, 9748uu, 9748rr, 88862385 for matched fitment.

How will replacing all three components at once help my vehicle?

Replacing coils, plugs and wires together eliminates mixed-condition ignition parts that can mask problems and cause misfires. Doing a full ignition refresh reduces diagnostic time and restores consistent spark delivery across all cylinders.

• Reduces misfire risk by addressing all common ignition failure points simultaneously.
• Double-iridium plugs offer longer service life and stable firing characteristics.
• Matched wires maintain proper resistance and insulation for reliable spark transfer.
• Coils supplied as a matched 8-pack ensure even performance across the V8 bank.

What should I expect during installation and maintenance?

Installation is intended as a straightforward swap for vehicles listed in the compatibility range; basic hand tools and a torque wrench are typically all that’s required. Follow factory torque specs for plugs and secure coil mounting points to avoid electrical or mechanical issues.

• Install plugs to manufacturer torque spec to prevent damage or leakage.
• Route and clip wires according to original harness to avoid heat contact and crossfire.
• Inspect coil boots and wire ends for secure seating to prevent arcing.
• After install, clear any stored engine codes and test drive to confirm smooth idle and full-throttle response.

Are these parts quality-tested and what do the materials mean?

The kit pairs durable ignition coils with double-iridium spark plugs and insulated wires constructed for automotive heat and vibration. Double-iridium plugs use hardened electrode materials for slower wear, and coils are designed for sustained high-voltage output.

• Coils engineered for consistent high-voltage output under repeated firing cycles.
• Double-iridium plugs resist electrode erosion for extended service intervals.
• Wires feature insulation materials intended to resist heat and prevent interference.
• Packaged as an 8-coil set plus matching plugs and wires for complete bank replacement.

Who is this for: Professional mechanics, DIY enthusiasts and fleet operators who maintain late-1990s to mid-2000s GM V8 vehicles and want a single, matched ignition replacement kit. If your truck or SUV is showing intermittent misfires, rough idle, decreased throttle response or you’re performing scheduled ignition service, this Nakkaa kit provides the compatible parts to complete the job efficiently.