2004 Workhorse P42 Spark Plugs

ACDelco® - GM Original Equipment™ Double Platinum Spark Plug
13
# 3665297375
$8.44
ACDelco® - Gold™ Rapidfire Platinum Spark Plug
13
# 5143928998
$6.29
Champion® - Nickel Spark Plug
6
# 3665214335
$3.71