GM Spark Plugs
availability
Spark Plug
GM
19354424
Standard. Vendor:acdelco. Vendor #R42XLS.
$2.39
MSRP $4.36
Save $1.97
45.2% Off 
Spark Plug
Ford
CYFS-12Y-RX
2.5L, with Flex fuel. 2.5L phev.
$12.04
MSRP $17.65
Save $5.61
31.8% Off 
Spark Plug
GM
19354426
Vendor:acdelco. Vendor #R42TS. Standard.
$2.47
MSRP $4.50
Save $2.03
45.1% Off 
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Worn spark plugs can often be the cause of engine misfiring. Spark plugs are something that are built to last a while, but since they endure high heat and friction, they can wear out over time. They should be replaced if you find they are not functioning properly. For genuine GM parts at great prices, shop our online catalog for the right spark plugs by choosing the Year, Make and Model of your vehicle below.