Transfer Case Model 263-XHD Transfercase : Two Year Warranty

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  • Regular price $1,650.00

The NP263-XHD transfer case is a heavy-duty, electric-shift transfer case for a variety of Chevrolet and GMC 4WD vehicles with Duramax Diesel and Allison Transmissions. This unit is remanufactured in our South Carolina facility and includes a twenty four month, unlimited miles warranty.

About the NP263-XHD

The 263XHD is an extra heavy-duty transfer case for 2000-2007 Chevrolet and GMC 2500HD, 3500 and 3500HD vehicles with the 6.6L Duramax diesel or the 8.1L gas engine. The unit has a 29 spline front input, (electric shift) 31 spline rear slip 1.608 O.D. female front output shaft.

Chevrolet Silverado 2500HD 2002-2007
Chevrolet Silverado 3500/3500HD 2001-2006
GMC Sierra 2500HD 2002-2006
GMC Sierra 3500/3500HD 2001-2006


The original rear case half on 263XHD units has a design issue where the oil pump rubs against the case causing pin-holes in the soft thin magnesium shell. These pin-holes allow the fluid to seep out and evaporate, leaving the transfer case without proper lubrication and cooling. This happens so gradually that you probably don't realize it until there has been sufficient damage done to the internal mechanisms. This is referred to as "pump rub."

Upgraded Case HalvesOur unique replacement case half completely eliminates the "pump-rub" issue. These case halves are made of heavy grade aluminum, not the thin magnesium used in the OE cases. In addition, the Transfer Case Express upgrade corrects a snap-ring groove issue and eliminates the need for as adapter plate. Thousands of customers have already told us how much they appreciate the durability and craftsmanship of our parts.





This reman transfer case includes a two (2) year, unlimited mileage warranty within the contiguous United States. All our remanufactured units come with new bearings, new chain (Morse chain) and new seals installed. Each unit is tested before leaving our facility.  We want to get you on the road and keep you there. You can see the complete warranty details on our warranty page.


Transfer Case Assembly TagBefore shipping, we will need the assembly number from your transfer case to verify that this part fits your vehicle.  You can find the assembly number on the sticker located on the bottom of your transfer case (see below).  If this information is not available, we will need the FULL VIN# of the vehicle to verify.


This unit requires a core exchange and your purchase includes a reusable shipping container and a UPS return service label. If we do not receive the core and the container within 14 days of delivery, you will be charged a core charge of $450.00 plus a shipping container charge of $150.00 and your warranty will be voided.

Just call 1-800 MUDROAD if you need help getting that old core back to us. There is a return service label provided in the box that we sent to you.

We will need the Assembly # on your transfer case for an exact match.  You can find the Assembly # on the tag located on the bottom of your transfer case.  If this information is not available, we will need the FULL VIN# of the vehicle to verify.

We are also able to ship internationally, however you will need to contact us for a shipping quote. 


Transfer cases from Transfer Case Express include our 24/7 Warranty. This warranty provides twenty-four (24) months or 70,000 miles of warranty coverage in the contiguous United States. For complete details, please see our warranty page. Please note if we do not receive your core, your warranty will not be applicable.


We are located in Spartanburg, SC and have been serving the needs of the          4x4 industry since 1998.

Not the part you're looking for?  Need further help? If you do not see your item listed or have further questions, please do not hesitate to email us or call us directly at 1-800-MUDROAD.