NP263HD Transfer Case Rebuild Kit w/ Bearings Gaskets Seals and Chain Upgrade to XHD Chain/Sprockets?:No but you're sending metal through

but you're sending metal through your transfer case

(1)Mainshaft Snap Ring

GMC Sierra 2500 (2001)

(1) Aluminum Reinforced NP263XHD Rear Transfer Case Half (Will not fit LD or HD models)

Transfer Case Model: Ford 4WD NP271

NP263HD Transfer Case Rebuild Kit w/ Bearings Gaskets Seals and Chain Upgrade to XHD Chain/Sprockets?:No but you're sending metal throughNew Process Gear NP263 Heavy Duty Transfer Case Rebuild Package Description Package Includes: (1) Bearing, Gasket, and Seal Rebuild Kit (1) Transfer Case Chain (1) BRNY *XHD Chain Upgrade* GM uses the XHD (eXtra Heavy Duty) transfer case to handle the massive torque numbers the Duramax and 8. 1L Allison combos can create. If you want your HD transfer case to handle some extra abuse, we recommend upgrading to the XHD chain and sprockets while you have