NP263XHD Rebuilt Transfer Case 2001-2007 6.6/8.1L | Chevy/GMC 2500HD 3500HD
Original price was: $1,150.00.$1,045.00Current price is: $1,045.00.
*Note*: Before Completing Your Order, Please Verify Vehicle Fitment And Our Core Return Policy. You Can Always Call Us At (888-926-3583) To Help Verify Your Order Details Or Confirm Fitment.
Shipping And Delivery: Orders Typically Ship Within The Same Or Next Business Day! (We Are Faster Than Every Other Remanufacturer)
We Cannot Ship To Hawaii & Alaska.
This NP263XHD remanufactured transfer case for sale is a direct replacement unit which fits 2001–2007 GM 2500HD and 3500HD series trucks equipped with 6.6L or 8.1L engines and the Allison 1000 automatic transmission. This is an electronically shifted, heavy-duty unit featuring RPO code NP1. To ensure a flawless fit for your GM vehicle, we kindly ask you to provide your vehicle information and, your Assembly # if possible in the field box before ordering. Once your order is placed, we’ll use this information to verify your vehicle/unit fitment
- Each 263XHD transfer case is fully rebuilt with upgraded internal components to improve durability, reliability, and long-term performance under heavy load. Our precision remanufacturing process includes a brand-new upgraded aluminum rear case half to permanently eliminate the notorious “pump rub” issue that causes internal oil loss and eventual failure in original factory units. This unit also receives a new upgraded oil pump, chain, bearings, seals, and heavy-duty range fork, ensuring your transfer case performs flawlessly under towing, off-road, or commercial-use conditions. We are the most affordable, fully rebuilt option in the United States — offering OEM-grade quality with absolutely no compromises!
About This Unit
The NP263XHD (New Process 263 Extra Heavy Duty) was introduced as the OEM transfer case in 2001–2007 Chevrolet Silverado HD and GMC Sierra HD trucks equipped with the Allison transmission and high-output engines such as the 6.6L Duramax diesel and 8.1L big block V8. Designed to exceed the capabilities of the standard NP263HD, the XHD model features reinforced internals, a thicker rear output shaft, and larger bearings to accommodate higher torque and towing capacity.
This electronically controlled, chain-driven unit includes a 2.72:1 planetary low-range gear ratio and a fixed rear output yoke. It was built specifically for use with the Allison 1000 transmission in 4×4 applications and can be identified by RPO code NP1. Common factory issues, such as pump rub damage and rear case wear, have been permanently resolved through our upgraded design and remanufacturing process.
This transfer case is currently on sale — making now the perfect time to replace or upgrade your OEM unit with a fully remanufactured model built to exceed factory standards.
- Note: Before completing your order, please verify that you require the NP263XHD model, not the NP263HD. If you’re looking for the standard-duty version for 6.0L gas trucks with the 4L80E or NV4500 transmission, check out our NP263HD Transfer Case — built for 2001–2007 GM 2500HD/3500HD models.
If you need any help confirming vehicle fitment, please do not hesitate to contact us at 888-926-3583 to ensure we are providing you with the correct unit.
Fitment Details
Weight:90 lbs.
Vehicle Model / Series: Sierra, Silverado 2500 and 3500
Condition: Remanufactured
Vehicle Year: 2001, 2002, 2003, 2004, 2005, 2006, 2007,
Compatible Models: Sierra, Silverado 2500 and 3500
Alternate Names: 263XHD, NP-263XHD
Build Type: Remanufactured and Upgraded
Make / Manufacturer: Chevrolet, General Motors, New Process, New Venture
Output Spline: 29 Spline Input, Electric Shift
Shift: Electric
Assembly / Model #’s: 12580168, 12584938, 12586557, 12590298, 15057441, 15057442, 15057443, 15057444, 24228417, and 24238188. (Do Not Worry If Yours Is Not Shown If You Know You Have a 263xhd)
Core Return Policy
We Will Pay For The Core Return Shipping (A Pre-Paid UPS Label Will Be Included In The Package)
*All transfer cases are sold on an exchange basis. In addition to the purchase price paid, we expect to receive a qualified core in return and our original shipping container back in all sales unless other arrangements are agreed upon prior to purchase and notated as such on the invoice. You have 30 days from the invoice date to return a qualified core and the original shipping container to us. If we do not receive a qualified core and our original shipping container within 30 days, you will be expected to pay an additional missing core and container fee ($200-$300 Depending on Unit)
*Note: If you have a bad or missing core, call us to confirm your details. In some cases we may accept an excessively damaged core as a valid Core Return if agreed upon prior to purchasing. If you have no returnable core, we may still be able to fulfill your order with a missing core fee, ($200-$300 Depending on Unit)
THERE WILL BE NO WARRANTY ON THE NEW TRANSFER CASE UNTIL WE HAVE RECEIVED EITHER THE RETURN CORE AND ORIGINAL SHIPPING CONTAINER OR THE MISSING CORE AND CONTAINER FEE. (See our Core Policy Page for more details)
Return/Warranty Policy
What Is Our Warranty Policy?
All of our remanufactured units come with an 18 month unlimited mileage replacement warranty. 36 month extended warranties are also available to purchase!
What Happens If My Unit Is Defective?
If a unit becomes defective within 18 months of purchasing, a replacement Transfer Case will be provided at no cost. In some cases, we may choose to refund the money. Transfer Case World will pay for the cost of return shipping.
*Check Our Warranty Page For More Details*
Return/Warranty Policy
Are Returns Accepted?
Certainly, you may return an item within 14 days from the date of purchase. However, returns are not permissible if the product has been fitted into a vehicle, or has been altered, modified, or damaged. Refunds issued will not cover the initial shipping fees, and the responsibility for the cost of returning the item to us, which may vary by location and carrier rates, falls on the customer.
Will there be a restocking fee?
To process a return with us, you’ll need to obtain a return authorization. Please note that a restocking fee of 10% applies to all returns. Understanding the complexities of drivetrain diagnostics is exhausting, but before making a purchase, please ensure that the issue with your vehicle is indeed due to the transfer case. If a unit has been mounted in your vehicle, it becomes non-returnable. We encourage you to thoroughly verify the need for a transfer case replacement prior to placing an order. Should you need to initiate a return, reach out to us within 14 days of receipt.
