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3S Transfer Case Rebuild

$700.00 $725.00

This is an OEM build service for your 3S Transfer Case. It includes replacing bearings, seals, and the input coupler / sleeve. Please note, if your internal pinion gear / shaft are damaged, we will consider this a non-serviceable core. 


The T-Case Build Service Includes:

Seals (Coupler and Yoke)

Coupler / Sleeve

Sleeve / Pinion Bearings

We are offering gear treatments for the Ring / Pinion gears. These treatments will help strengthen the internals, as well as, aide in longevity / reliability. You can choose between WPC and REM/Isotropic Finishing. 

WPC is a permanent surface treatment that reduces friction while strengthening the part. Its unique micro-dimple formation pattern greatly reduces friction and is unmatched by conventional methods of surface treatment. It is a proven process that has been utilized for many years in the racing and automotive industry and is complimented by utilizing our REM/ISF treatment. WPC can strengthen parts in two ways. First it adds an extremely high level of compressive stress at, and near, the surface. The second, is that the WPC treatment creates a Nano - Crystalline structure at the surface of the metal. Both of these mean that metal fatigue and crack initiation are both noticeably reduced; thus strengthening the gears and shafts inside of the transmission.

Benefits of the REM / ISF Process:
  • Less inertia = Less friction = Less fuel consumed
  • Reduction of friction of metal to metal contact parts = Less wear and contact fatigue
  • Lower operating temperatures = Increased power output and efficiency
  • Increased power density = options of larger engines or smaller transmissions
  • Increased durability = Lower replacement costs and fewer failures
  • Improved bending fatigue resistance
  • Reduced lubrication maintenance
  • Quieter operation
  • Reduces rotational torque
Email us with any questions! 


Parts are cleaned using industrial parts washers.  Exceptionally clean units is one of the reasons why our products are the highest quality in the business!  We have state-of-the-art cleaning equipment which other builders could only dream of.

We have the standard large industrial washer, but after the parts run through that machine, which is all most builders have, we use other pieces of equipment which will assure your parts are truly clean.  Our best of the 'ultimate cleaning machines' is a large 110gal Omegasonics, Ultrasonic cleaner which can fit large items like engine blocks.  This amazing unit costs $27k, which is why they are so rare in most shops. Ultrasonic cleaning uses high frequency sound waves to agitate in a liquid. Cavitation bubbles induced by the agitation act on contaminants adhering to substrates like metals, plastics, glass, rubber, and ceramics. This action also penetrates blind holes, cracks, and recesses. The intention is to thoroughly remove all traces of contamination tightly adhering or embedded onto solid surfaces. In other words, your unit will be far cleaner with this process than some dude cleaning your parts in a solvent tank and basic parts washer who can't reach all parts for a thorough cleaning.  

Video of Jay Leno using one here:




Finally, we have a unit which will rinse the rest of the junk out by pushing hot soapy water, with 500PSI of pulsating pressure, through the parts to assure everything is removed.  This is another unit we have never seen in your average shop either and has also become a valuable asset.

With the best cleaning equipment, we also have a very clean facility.  All units are built in a spotless environment and using tools, and benches, which are clean and only used for assembly purposes.  In other words, the same tools used to pull your dirty old t-case out of your car are NOT the same tools used to rebuild your pristine unit afterward. Take a look at the typical shop and check their tools.  It is shocking how dirty things are in most shops and that dirt will end up in your unit.  That doesn't happen here. 

Your unit is also shipped in a double walled custom made box for Jacks Transmissions.  Your unit will be sitting snugly, and safely, in preformed foam pads to assure safe delivery.



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