Merchant Automotive 261XHD Transfer Case - 01-07 GM Duramax 6.6L

Product Name: Merchant Automotive 261XHD Transfer Case - 2001-2007 GM Duramax 6.6L
Manufacturer: Merchant Automotive
Manufacturer Part #: 10603
Thoroughbred Diesel Part #: MAT10603
Fitment Notes: 2001-2007 GM Duramax 6.6L

***This is the 261XHD manual shift 4WD lever on the floor transfer case. If you have the electronic push button 4WD on the dash please click here for the 263XHD transfer case.***

Our cases maintain use of OE quality magnesium construction and are paired with our pump upgrade kit for unmatched strength, reliability and longevity.

The transfer case on your Duramax truck transfers power from the transmission to the front and rear axles by the use of driveshafts. When a transfer case fails, or starts failing, you will lose performance or functionality of your four wheel drive. Replacing your 261XHD transfer case is a job you do not want to have to do, or pay for twice, so replacing it with a high quality replacement is key.

This transfer case is a direct replacement transfer case for 2001-2007 Duramax equipped trucks with a factory 261XHD transfer case. While this is a direct replacement transfer case, it includes upgraded parts to improve the performance and prevent future problems.  Our famous Merchant Automotive transfer case pump upgrade is included with this kit to help eliminate pump rub, a common problem on factory Duramax transmissions. It will also come with magnetic drain plugs to help catch small debris floating in your oil to extend fluid life. Lastly, you will get 2 quarts of MA performance transfer case oil to finish up your install.

• Direct Replacement 
• Upgrade From Factory
• Built To Resolve Pump Rub

Merchant Automotive 261XHD Transfer Case Features:

• Includes Merchant Auto Transfer Case Pump Upgrade
• Comes With Magnetic Drain Plug
• Includes MA Performance Transfer Case Oil
• For more information on Merchant Automotive call us at 1-859-737-4966

What's In The Box

• 261XHD Transfer Case
• 2 Quarts MA Performance Transfer Case Oil

One typical GM HD transfer case will require 2 quarts, so we have bottled up our performance transfer case fluid in a convenient 2 quart bottle to provide you with a single fill with no waste.

Duramax Magnetic Drain Plugs
The factory plugs on your Duramax transfer case are great and serve their purpose, however, there is always room for improvement. This kit features magnetic drain plugs for your transfer case to catch small metal debris that is suspended in the fluid. This not only prevents these harmful flakes of metal from making their way into the vital parts of your transfer case, but it also makes cleaning them off during every serving interval, very easy.

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.

FAQ

Is my 2001 to early-2007 transfer case a NP261XHD or NP263XHD?

The difference between an NP261XHD and an NP263XHD transfer case is the shift selection mechanism. Chevrolet and GMC trucks using NO261XHD transfer cases use a manual shift selection with a floor mounted range selector. Trucks with electronic (push button or knob on the dash) shift selection are equipped with the NP263XHD transfer case.