Transfer Case Pump Upgrade and Repair Kit – Seal Driver and Pump (10775) for 2001-2007 Duramax 261XHD 263XHD
$629.94
Merchant Automotive transfer case pump upgrade prevents pump rub failure in 2001-early 2007 GM NP261XHD and NP263XH transfer cases. This all in one kit includes necessary parts to repair and upgrade transfer cases needing rear case replacement due to pump rub.
Merchant Automotive Transfer Case Pump Upgrade for 2001–Early 2007 GM
Pump rub is a prevalent problem for 2001–early 2007 GM transfer cases. Preventing the problem before it occurs is always a good idea. The Merchant Automotive transfer case pump upgrade gives you a proven way to prevent pump rub or replace a transfer case housing that has succumbed to pump rub.
Pump rub causes fluid loss and leads to internal damage. Acting early protects your transfer case and reduces the risk of costly repairs. If your transfer case has not failed due to pump rub, you can install the basic kit to prevent future failures as preventative maintenance. You can also install the MA transfer case pump upgrade during your repair to prevent future failure.
NP261XHD / NP263XH Transfer Case Pump Upgrade Kit
This all in one NP261XHD/NP263XH transfer case pump upgrade kit includes the necessary parts to upgrade and repair a transfer case that needs a rear case replacement due to pump rub failure. It provides a direct solution for transfer cases affected by this common issue.
This kit supports Duramax diesel LB7, LLY, and LBZ engine platforms. It also supports 8.1L gas engines equipped with an Allison transmission. These applications represent the most common heavy-duty GM platforms that experience pump rub.
Transfer cases that operate without lubrication often develop additional internal damage. External inspection may not reveal this damage. In those situations, you may need additional parts to complete the repair. Always inspect the unit carefully during service.
Limited Lifetime Warranty Coverage
Merchant Automotive backs this kit with a Limited Lifetime Warranty against pump rub failure when you install it properly. That coverage adds confidence to your repair and long-term maintenance plan.
Whether you want to prevent pump rub or repair a transfer case that has already failed, this Merchant Automotive transfer case pump upgrade delivers a focused solution for 2001–early 2007 GM NP261XHD and NP263XH transfer cases.
Make sure you check out our other great parts for your 2001-2007 Duramax truck.
| Weight | 17 lbs |
|---|---|
| Dimensions | 20 × 12 × 12 in |
Fitment
2001-2007 Duramax 261XHD 263XHD
Features
Benefits
- Direct Replacement
- Stronger Than Factory
- All In One Kit
Features
- OE Style Transfer Case
- Includes Pump Upgrade
- Seal Driver/Pump Included
Includes
- Merchant Automotive Billet T-6061 Aluminum CNC-Machined Transfer Case Pump Housing
- Merchant Automotive Performance Transfer Case Fluid
- Merchant Automotive Magnetic Drain Plug Kit
- Transfer Case Adapter Gasket
- RTV Silicone with applicator nozzle
- Blue Threadlock
- OEM Magnesium Rear Transfer Case Housing
- Rear Output Seal
- Pickup Tube Seal
- Speed Sensor Seal
- Snap Ring for the Output Shaft Bearing
- Snap Ring Grommet
- Snap Ring Pliers
- Spline Pump Assembly
- Rear Output Seal Driver
What is Pump Rub?
Pump Rub refers to a gear pump failure in GM transfer cases from 1998-early 2007. The gear pump works by forcing oil to the planetary as well as the drive sprocket sleeve. The gear pump is driven by a shaft, so the housing of the pump must “float” in the rear housing of the transfer case. The pump housing has tabs that fit into spots in the rear housing to locate the pump housing and prevent it from spinning inside the case with the mainshaft. Over time, these pump tabs can wear on the rear housing and start to wear on the aluminum pump housing causing a small leak. Due to the location of the leak, many vehicles do not experience dripping while parked, but rather while driving, leaving it gone unnoticed. The transfer case on these vehicles do not have a low fluid indicator, which means that by the time the problem is noticed, it is usually too late.
From the factory, GM installed a spring steel clip in the housing to prevent this type of wear, but this has proved to break and become useless in these situations.
With the installation of this transfer case repair/upgrade kit, you can prevent this before it happens and avoid costly repair bills. You will also get a LIMITED LIFETIME WARRANTY against pump rub. If you have this kit installed and your case wears a hold in the new rear housing, we will buy you a new transfer case. This warranty will only apply to installations with a new rear housing.
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