Merchant Automotive 10057 Transfer Case Pump Upgrade Kit with Fluid CORE-1000 Compared to the factory tube-and-fin

Compared to the factory tube-and-fin intercooler

Enables mounting of GTX Watchdog and gauge tuner to a custom gauge pod mount that is equipped with gauge hole sizes of 2 1/16 inch

6L Duramax Engine

performance gains

Merchant Automotive 10057 Transfer Case Pump Upgrade Kit with Fluid CORE-1000 Compared to the factory tube-and-finThe Merchant Automotive 10001 Transfer Case Pump Upgrade Kit with Fluid for your 01 07 GM 6. 6L Duramax is the best upgrade you can make to your GM transfer case (model 136, 146, 246, 261, 261HD, 263HD, 263XHD, 261XHD) to prevent the ever increasing problem of pump rub. What is pump rub? The GM transfer cases use a gear pump inside the case that is driven off the mainshaft. The pump forces oil to the planetary as well as the drive sprocket sleeve.