Transfer Case Model 263-HD Transfercase: Free Shipping

  • Sale
  • Regular price $1,600.00

The NP263-HD transfer case is a electric-shift transfer case for a variety of Chevrolet and GMC 4WD vehicles. This unit is remanufactured in our South Carolina facility and includes a twelve-month, unlimited miles warranty.

About the NP263-HD

The 263HD has 2.72:1 ratio, and was originally supplied with a magnesium case. Our improved case is all aluminum resulting in longer life and eliminating the "pump-rub" problem that is so common with the magnesium cases. Our case design also eliminates the need for "case-saver" style modifications to the transfer case.

The 263 HD has an input spline count of 32 splines and some of the most common fitments include:

Chevrolet & GMC 2500 263HD 32 spline input 32 spline output 2003-2004
Chevrolet & GMC 2500 263HD 32 spline input 32 spline output 2003-2007
Chevrolet & GMC 3500 263HD 32 spline input 32 spline output 2003-2006
Chevrolet & GMC 3500 263HD 32 spline input 32 spline output 2001-2002


The original rear case half on 263HD 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.


Before 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.  If this information is not available, we will need the FULL VIN# of the vehicle to verify.


This sale requires a core exchange and the shipping costs include a reusable shipping container and a UPS return service label.

Your shipment will include a UPS return service label and a reusable shipping container. If we do not receive the core and the container within 14 days of delivery, you will be charged a core charge of $400.00 plus a shipping container charge of $150.00. If we do not receive your old transfercase core back, 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 are also able to ship internationally, however you will need to contact us for a shipping quote. 


All reman transfer cases from Transfer Case Express carry a twelve (24) month, unlimited miles warranty. For complete details, please see our warranty page.


We are located in Spartanburg, SC. Sales tax must be charged to all South Carolina, Texas and California purchases, unless a valid resale license/number is provided in advance of the purchase. 

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.