cummins wanted

Actually, the 24 valve came out in 98.5. I have a 98.4 with a 12 valve, 5 speed, and a quad cab with back doors. It took me 11 months to find mine and I ended up getting it out of Texas. Watch the 24 valves fuel system carefully since the injector pump is lubed and cooled by the fuel going thru it. The P7100's on the 12 valves use the engine oil for that and are not as sensitive.