OEM-Style Rear Block Kit for GM 2500 HD

About this part

OEM-Style Rear Block Kit, fitment-checked

Model-specific rather than universal, and the contents are listed: solid cast iron blocks with an integrated locating pin, E-coated U-bolts, nuts and washers.

the part calls this OEM style and model specific, which is a useful distinction from a universal block that has to be adapted. What comes in the box is stated too — solid cast iron blocks with the locating pin integrated rather than loose, E-coated U-bolts, and the nuts and washers to finish the job. Coverage is narrower than most GM heavy-duty listings in this range: the Chevrolet Silverado 2500 HD in LT, LTZ and WT and the GMC Sierra 2500 HD, both 2011 to 2019. Only the 2500 HD trucks are listed; the larger heavy duties are not.