Review on Standard Motor Products GP114 Diesel by Robert Carlson

Mounted on a '07 Classic 2500hd with a Duramax 6.6 LBZ diesel engine. Easy installation. It is better to remove the front tires and the plastic fenders. Update: March 6th, 2021 Just two weeks later, one of the 8 glow plugs failed. My "Check Engine" light came on and the code showed that the cylinder 1 glow plug was open. I pulled the glow plug and read the resistance end to end and it showed open. Luckily I kept one of the old ones and it was still 2 ohms so I sent it back for now until I can order another one. I've used other brands of spark plugs before and haven't had any problems. I expected it to last more than 2 weeks. I hope the other new 7s don't come out anytime soon.