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Re: DD15 Injector Cups
Posted to HD/Fleet Forum on 10/28/2020

If it's a DD13 or DD15 in a Cascadia, yes you should be able to replace all 6 without pulling the head. There's a panel on the firewall that unbolts to give access. Take it off before removing the valve cover. Your vehicle description says this is an 11.9L, if... Login to read more.