Description The MP 2225 Transfer Case is the only AWD upgrade T-case for the Hummer H1 and HMMWV.  These came on the latest ECV HMMWV’s that are 16,000lb GVWR. Standard Features: – Chain is 20% wider and therefore much stronger – Significantly improved cooling loop — uses engine coolant – Case halves have a lot more bolts for better sealing and ultimate strength MM Specific Improvements: – We open every brand new tcase to add the High/Low switch in the front case half. – We install our MM Billet Tail Housing that will use the stock VSS (vehicle speed sensor) – We make it 100% plug and play:  uses the same driveshafts and sensors, plugs right into the factory H1 harness. HMMWV version available, contact us for details.