Model#: JETN708158

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
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New or Recon items with possible minor cosmetic damage; CPO 120 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

JET 708158 Universal Mobile Base Extension Kit for 708119

  • JET 708158 Universal Mobile Base Extension Kit for 708119
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  • Unique quick-snap adjustment allows you to configure the base length from 24 in. to 40 in.
  • Low ground clearance provides excellent stability under load
  • Two swivel casters offer easy mobility; lock into place for stability during use
  • Kits are compatible with most table saw brands and models
  • Universal Mobile Base Extension Kit for 708119 - 708158



4.3 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (6)
Easy To Use (1)
Lightweight (1)
Yes, I would recommend this to a friend
May 10, 2016
Yes, I would recommend this to a friend
Excellent quality
Top notch quality. Sturdy addition to my Jet mobile base.
October 26, 2015
Yes, I would recommend this to a friend
Works well - Check alignment
For the most part, this base extension works well. Two things to keep in mind: The bar that connects it to the tool base is quite thin making it fairly flimsy in side-to-side movement. A thicker piece, maybe a square tube, would provide stiffness and work a little better. Secondly, it is very important that the saw/tool be installed EXACTLY square and perfect in the mobile base. Even if it is slightly off, the extension table will not align properly with this extension base. I purchased the 50" extension table and because my saw is slightly, and I mean slightly, out of square with my mobile base, my extension table sits off to one side of the base extension. Not really sure if that information was pointed out in the instruction manual. And once the saw is assembled, it is almost impossible to re-adjust it on the mobile base as it weighs in around 500+ pounds. Just be super critical about making sure it is perfectly square when you set it in the base and begin to assemble it and the extension table.
May 18, 2014
Yes, I would recommend this to a friend
Extension Kit
Could use some u bolts, or something, to hold extenson table legs to base. If not careful moving legs can jump off the table.Easy to mount and attach.
March 10, 2013
Yes, I would recommend this to a friend
Easy To Use
Excellent quality mobile base extension
I'm very satisfied with this extension kit. It is durable and very easy to setup. Although I would have preferred a solid, welded mobile base for my table saw, this was the next best thing. I initially purchased a unit from a local home store. After spending an hour to assemble and ending up with a wimpy product, I purchased this bad boy. [...] Excellent product! Thank you for not wasting my time with some wannabe junk.
April 12, 2011
Yes, I would recommend this to a friend
Easy to install and great product!
Simple to install and works the way detailed in the information!
June 11, 2010

Questions & Answers

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Will this base work with a Powermatic contractors table saw with the extended table with legs
George on Sep 22, 2015
BEST ANSWER: Yes, the 708158 will extend from 24-40in.


JET, Wilton and Powermatic warrants every product they sell against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday


The general warranty lasts for the time period specified in the literature included with your product or on the official JET, Wilton or Powermatic branded websites.
  1. • JET, Wilton and Powermatic products carry a limited warranty which varies in duration based upon the product. (See points below)
  2. • Accessories carry a limited warranty of one year from the date of receipt.
  3. • Consumable items are defined as expendable parts or accessories expected to become inoperable within a reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.


This warranty covers only the initial purchaser of the product from the date of delivery.


This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear, improper repair, alterations or lack of maintenance.


Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.


Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof of initial purchase when calling. If a product requires further inspection, the Technical Service representative will explain and assist with any additional action needed. JET, Wilton and Powermatic have Authorized Service Centers located throughout the United States. For the name of an Authorized Service Center in your area call 1-800-274-6846 or use the Service Center Locator on the JET, Wilton or Powermatic website.


JET, Wilton and Powermatic are constantly adding new products. For complete, up-to-date product information, check with your local distributor or visit the JET, Wilton or Powermatic website.


This warranty gives you specific legal rights, subject to applicable state law.


JET, WILTON AND POWERMATIC LIMIT ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. JET, WILTON AND POWERMATIC SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU. JET, Wilton and Powermatic sell through distributors only. The specifications listed in JET, Wilton and Powermatic printed materials and on official JET, Wilton and Powermatic-branded websites are given as general information and are not binding. JET, Wilton and Powermatic reserve the right to effect at any time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever. JET® branded products are not sold in Canada by JPW Industries.

Product Listing with Warranty Period

  1. • 90 Days – Parts; Consumable items; Light-Duty Air Tools
  2. • 1 Year – Motors; Machine Accessories; Heavy-Duty Air Tools; Pro-Duty Air Tools
  3. • 2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used for industrial or commercial purposes.
  4. • 5 Year – Woodworking Machinery
  5. • Limited Lifetime – Wilton branded products; JET Parallel clamps; VOLT Series Electric Hoists Manual Hoists; Manual Hoist Accessories; Shop Tools; Warehouse & Dock products; Hand Tools

NOTE: JET, Wilton and Powermatic are divisions of JPW Industries. References in this document to JET, Wilton and/or Powermatic also apply to JPW Industries or any of its successors in interest to the JET, Wilton and/or Powermatic brands.