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NWF EcoBox-i Billet Planetary Doubler Case (Dana)

Your Price: $799.00
Part Number:BBE08

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Transfer Case

Bringing the quality and craftsmanship of the original, the BlackBox-Eco-i was designed for the 4x4’er on a budget. While retaining the originals technology, quality and durability, the Eco is minimized to reduce cost. Designed Specifically for the Dana 300 and Bronco Dana 20 Transfer Cases we were able to greatly reduce the overall installed length. Designed to be a DIY builder kit; cases are shipped empty, and the customer provides the gears, and does the install and assembly. Low Range on a budget.

Compatible Applications:

Dana 300
Replacing the input shaft and housing, the Dana 300 input gear directly splines onto the EcoBox-i output shaft, making this a very compact 5.33” long EcoBox-i.

Bronco Dana 20

Replacing the long factory input shaft and bearing retainer, the 6-spline input gear mounts directly to the EcoBox-i output Shaft. This adds up to a compact 5.518” long gearbox assembly that can now also be easily adapted to a wide range of transmissions. 

While the installation requires an intermediate level of mechanical aptitude, we also provide an installation overview.

Included In the Eco-Crawl Kit:

Front & Rear Billet 6061-T6 Case Halves
9310 Heat Treated Output Shaft
Sealed Roller Output Bearing
Internal Shifter Assembly
Hardware Pack

Additional Parts Required:

Planetary Gear Assembly From 231/241 (6 pinion recommended)
Input Bearing From 231/241
Shift Range collar From Manual shift 231/241


Optional Dual Oiling Billet Input Retainer

Need an input shaft? We’ve got them

** Note: To install a 31 Spline Input Shaft into one of our Eco Cases machining on the O.D of the Input is Required. Also a Special Pocket Bearing Adapter is required to install the proper Pocket Bearing. Please Call for more Information. **


** Note: The 241DHD with the PTO Drive will not work as a donor Case**