Shelter in Place Order: Illinois

Until the Shelter In Place order for Illinois is lifted, the Woodridge Product Support Center will be prioritizing shipments to support critical orders. For critical orders, please select FedEx - Priority Overnight as the shipping method and create a Tools case file that includes the order number and VIN. In most cases, critical orders will be shipped the following business day. All other orders will be shipped as resources allow.

Canadian Retail Sales

The Navistar Product Support Center has temporarily disabled retail catalog sales in Canada. Please contact a local International® dealership to purchase tools or software. International® dealerships can be located using the tool at

We apologize for the inconvenience.

Image shown may not be actual product.

Harness, Breakout
Product Number 12-166-01
Used to test and diagnose various electrical circuits. Applicable sensor(s): Engine Coolant Temp (ECT).

Other vehicle circuit applications may apply.

Applicable to:
Bus , Heavy Duty , Severe Series , 2013 N13 w/SCR , 2015 N13 w/SCR , 2015 PSI 8.8L Propane , International A26 , 9000i Series , AE, BE, CE & Integrated Bus , HV , HX , LoneStar , LT , ProStar , RH , TranStar , Electronic Engine Components , 08 Electrical
List of Documents
Navistar Terms and Conditions (en)
Product and price information are subject to change without notice.