IHOTDER Spark Plugs and Wires Kit 16PCS OEM M8-48322 Compatible for GM V8s — Iridium & Silicone

This complete ignition pack replaces worn components in vehicles that use OEM numbers M8-48322, 48322R, 48322 and 7831. The kit pairs high-temperature iridium spark plugs with silicone-insulated, copper-core wires to help re-establish stable high-voltage transfer from the coil to each cylinder. It’s a practical, budget-friendly refresh for routine maintenance or troubleshooting misfires, rough idle and reduced performance related to aging ignition parts.

Which vehicles and engines will this kit fit?

The IHOTDER set is built for a range of GM vehicles that use the listed OEM references. Compatibility covers many model years and V8 displacements, but always confirm against your VIN or the pictures provided with the listing before ordering.

• Common fits: GMC Yukon (1999–2019) with 4.8L, 5.3L, 5.7L, 6.0L and 6.2L engines.
• Yukon XL coverage: 2000–2014 1500 series and select 2017–2018 XL models with 5.3L or 6.2L engines.
• Also compatible with many Chevrolet, Cadillac and Hummer models using the same OEM plug/wire specs.
• Double-check the product images and your vehicle’s engine code before purchase.

How do the plugs and wires improve ignition performance?

The combination addresses two common failure points: deteriorated insulation and eroded electrodes. The silicone sheathing resists heat and moisture, while the copper core sustains consistent electrical flow; iridium electrodes keep spark geometry intact under high temperatures.

• Silicone outer layer for heat and abrasion resistance, improving service life.
• Copper core conductor minimizes voltage drop and maintains spark energy.
• Iridium-tipped plugs retain electrode shape longer than standard alloys.
• Complete set replaces both ends of the ignition path to reduce crossfire and misfires.

What’s involved in installing this 16-piece kit?

Installation is straightforward for anyone with basic automotive experience and the right tools. Marking wire positions before removal and replacing one cylinder at a time avoids mix-ups; torque the plugs to factory spec and seat each wire fully for a proper connection.

• Label each wire location before removing the old wires to keep cylinder order correct.
• Use a properly gapped iridium plug and follow the correct torque values when installing.
• Push each boot onto the spark plug and coil/connector until it clicks into place.
• Replace wires and plugs one cylinder at a time to prevent cross-connection errors.

What should I expect in durability and maintenance?

Expect improved resistance to heat, oil and moisture compared with worn original wires and plugs. Iridium plugs typically outlast conventional copper plugs, while silicone-insulated wires resist cracking—both reduce the need for frequent replacements under normal driving conditions.

• Iridium plugs keep a stable spark for extended mileage.
• Silicone jackets reduce the risk of arcing and external damage.
• Copper core sustains consistent conductivity throughout service life.
• Regular inspection during tune-ups helps catch wear before performance drops.

Who is this for: Drivers and DIY mechanics who own GM vehicles (GMC, Chevrolet, Cadillac, Hummer) with compatible engine codes and want a cost-effective, complete ignition refresh. This kit suits those replacing a full set of spark plugs and ignition wires at once—ideal for routine maintenance, preparing a vehicle for sale, or resolving ignition-related drivability issues. Always verify fitment against your vehicle’s VIN or engine stamp and follow safe installation practices or consult a professional mechanic if unsure.