Stewart for Model Number Whirlpool Electric Range RF365BXV WO The surface element switch on the 1989 Whirlpool Electric Range Model# RF365BXVWO is clearly marked as 3148954; KS812705; 89341 (10.0-11.5A) 240V FSP. Yet, many website say this part is now replaced with part# 3149400 (8.9-11.0A). The new part 3149400 or AP3095444 (8.9-11.0A) metal shaft (the stem) is 1" long (seen from the picture on your website). The old part 3148954 metal shaft (the stem) is 9/16" long. PLEASE ADVISE whether the NEW part 3149400 come with a changeable metal shaft (stem) adapter, or a removable metal shaft (stem) to reduce its length from 1" to 9/16".
Answer Stewart, This infinite switch WP3149400 is the correct switch for your unit. This switch has a break away stem. With the stem being too long for your application you can take a pair of pliers to break the top piece off the shaft. Make sure you remove the metal clip on it first and then break it off and put the clip on the lower part of the stem. Read More... Answered by AppliancePartsPros.com | Wednesday, September 11, 2013