Quality Differential Parts since 1982!(800)510-0950
The icon shown to the left can be found throughout this website. Simply “Click to View Fullscreen” to access the web version of our current catalog.
You can also click on the “Download” link and save a copy to your computer (9 MB). The PDF download version includes a clickable Table of Contents for fast access to the page you are seeking. After saving the PDF to the location of your choice, open the file and click on the “Bookmarks” tab on the left to see the Table of Contents.
Printed copies of the 2015 West Coast Differentials Catalog are available upon request. To request your copy (or copies), contact our sales department at (800) 642-0950 or send us an email at firstname.lastname@example.org
The ProCal Module is an easy way for Jeep Wrangler JK owners to correct the speedometer and shift points when larger tires are installed and gear ratios have been changed.
The Procal Module provides functions for large tire recalibration, axle gear ratio recalibration, tire pressure monitor recalibration, daytime running lamp activation/deactivation, one -touch turn signal activation-deactivation, engine idle speed options and precise steering wheel centering. These functions are available for all JK Wranglers including the new 2012 models. Owners of earlier versions of the ProCal can send their module in for a re-flash, updating software for use with 2012 model JK's.
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