Lot of 8 spark plugs

One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal. Reduces radio frequency and engine interference, regulates spark plug energy and seals against compression pressures for long life

Double platinum point pad on center and ground electrode offer increased durability and consistent voltage demands to reduce wear on ignition system

100% Pure Copper Core results in cooler electrode temperature for enhanced durability and superior fouling coverage for many of todays most popular vehicles, ACDelco Professional Double Platinum Spark Plugs are great replacement plugs for motorists wanting the performance characteristics of a premium aftermarket plug. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver 100,000-mile performance. These premium aftermarket replacement Double Platinum Spark Plugs are manufactured to meet or exceed your expectations

ACDelco is the exclusive Original Equipment parts brand for Chevrolet, Buick, GMC and Cadillac, as well as a provider of premium aftermarket parts for most other makes and models.Other available applications include off-road, marine and industrial. Authorized ACDelco Sellers have been selected because of their direct relationship with ACDelco as part of a certified parts distribution network. The ACDelco Authorized Seller logo is your guarantee that you are purchasing a genuine ACDelco part.

It is important to inspect spark plugs at regular intervals for signs of deterioration. Follow these steps for removing spark plugs for inspection, servicing or replacement:

Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.

Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.

Brush or air blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from dirt when applying compressed air to spark plug wells.

Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.

Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.

Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap. NOTE: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug. You could damage the spark plug. Replace the incorrectly gapped ACDelco Professional Iridium Spark Plug with one that is correctly gapped.