2011 Workhorse W42 Spark Plugs

ACDelco® - GM Original Equipment™ Iridium Spark Plug
13
# 6144116094
$10.30
ACDelco® - Gold™ Rapidfire Platinum Spark Plug
13
# 6144133113
$6.29
Champion® - Nickel Spark Plug
6
# 3665226363
$3.67