X4XZ UF414 Ignition Coil Pack Kit — 8 Coils, 8 Double Iridium Plugs 41-962 & 8 748UU Silicone Wires for GM V8

This all-in-one ignition kit from X4XZ combines eight UF414 coil-on-plug units, eight long-life iridium spark plugs (41-962) and eight 748UU silicone spark plug wires with organizing buckles. It’s built to match or improve on original-equipment fit and wiring layout so you can replace coils, plugs and wires in a single service visit. The components are specified for numerous Chevy, GMC, Buick, Cadillac, Isuzu, Hummer, Pontiac and Workhorse models spanning mid-2000s through late 2010s; OE cross-reference numbers are provided in the product details for verification.

Which vehicles and engine setups will this X4XZ kit fit?

The kit is designed for many GM-platform V8 and related applications. It lists direct compatibility with Chevy and GMC trucks, SUVs and vans as well as select Buick, Cadillac, Isuzu, Hummer, Pontiac and Workhorse chassis across several model years. Always verify your vehicle’s OE part numbers before purchasing.

• Direct compatibility includes models such as Chevy Avalanche, Camaro, Silverado 1500/2500/3500, Tahoe, Suburban, and others noted in the features.
• Also fits Cadillac Escalade, Buick Rainier, Pontiac G8/Grand Prix/GTO and select Isuzu/Workhorse/Hummer variants.
• OE/Cross-reference numbers provided: UF414, 41-962, 748UU and replacement references C1512, D514A, 5C1555, E894, IC534, 12573190, GN10165, etc.

How do these components improve durability and ignition consistency?

X4XZ uses iridium electrodes and a high-grade ceramic body for the 41-962 spark plugs, extending life and maintaining a stable spark pattern under load. The 748UU wires are molded from high-temperature silicone rubber with strong insulation to reduce leakage and resist heat and oil exposure. Coils are manufactured to meet or exceed OE electrical characteristics for proper secondary voltage and timing response.

• Iridium plugs deliver a longer service life and consistent firing across cylinders.
• Silicone wires resist heat and prevent crossfire or leakage in high-temperature engine bays.
• Coils match OE mounting and connector profiles for plug-and-play replacement.

What’s included in the kit and what tools or parts will I still need?

The package ships with eight UF414 ignition coils, eight 41-962 iridium spark plugs, eight 748UU spark plug wires and six wire buckles for routing and organization. No instruction manual is included, so basic hand tools and standard ignition service tools are required. Torque specs and installation order should follow the vehicle manufacturer’s service manual.

• Included: UF414 coils x8, 41-962 iridium plugs x8, 748UU wires x8, wire buckles x6.
• Not included: service manual, specialty tools, dielectric grease — recommended to have spark plug socket, torque wrench, and anti-seize or dielectric grease if desired.
• Follow OEM torque specs and cylinder sequence to avoid misfires.

What after-sales support and warranty coverage does X4XZ provide?

X4XZ offers a one-year product service period and 24-hour customer support for installation or quality questions. Contact the seller with photos and vehicle details if you encounter fitment or performance issues so they can assist or process a return within the warranty period.

• 1-year product service warranty included.
• 24-hour customer service for installation or quality inquiries.
• Provide vehicle VIN and OE part numbers to speed support and verification.

Who is this for: This kit is aimed at DIY mechanics and professional technicians servicing GM V8 engines who want a coordinated, full ignition-system refresh: coils, plugs and high-temperature wires in one purchase. It’s suitable for fleet maintenance, routine tune-ups, and owners replacing aging ignition components to restore consistent starting, idle stability and throttle response where applicable. Verify vehicle fitment with the OE cross-reference list before ordering.