Spark Plug for 2018 Gmc Sierra
2 parts confirmed to fit your 2018 Gmc Sierra.
Aisin
Aisin Spark Plug (AIS-SPARK-PLUG-000)
$178.31In stock
Dorman
Dorman Spark Plug (DOR-SPARK-PLUG-001)
$173.40In stock
Spark Plug for your 2018 Gmc Sierra: what to know
Choosing the right spark plug for your 2018 Gmc Sierracomes down to fitment and quality tier. Every option above is matched to your vehicle; compare brands and prices, and confirm your engine or trim on the product page. Not sure which to pick? Reach out and we'll verify fitment before you order.