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Probably avoid that listing, then... There's plenty of HMMWVs out there to buy, and many of them are right here in the classifieds section. The M998A1 has several improvements over the original that I'm honestly starting to forget (3-point seat belts, better transfer case, more reliable parking brake setup). Most of these improvements would actually be made to the older M998s if they ever went in for rebuild, as I can't think of any major improvements that weren't just an MWO that called for units to replace the "inferior" parts with the newer setup.
Hmm no mention of the t case upgrade. My 998 was one of the very first 1985 and serial 11xx, yet it has the park brake and t case upgrades. Not sure about the hood grille and rifle mounts but I’m guessing yes. How can you tell on the half shafts and why was it only the rears?
It's definitely there, though. There were MWOs in-place to call for HMMWVs to be upgraded to those parts if the systems failed. The parts TM indicates exactly what models accept what parts. The original light duty HMMWVs get the older T-Case (NP218?). The A1 and beyond has an NP242. There's notes in there to basically ask what other components are installed, as the NP242 can have a different spline count, depending on your propeller shaft configuration. The yoke style changes from original to A1 as well. Only the rear brakes were upgraded because with the single propeller shaft disc brake for parking being deleted, the rear calipers needed to have a parking brake actuator assembly built into them, thus different parts. This is an improvement because now there are two holding points for the parking brake, plus you don't have a hot brake assembly right next to the fuel tank in case of failure.
Because that isn't an HMMWV.
No argument. He specifically asked about the interior differences between an m998 hmmwv and a civvy H1.
