View Full Version : 1993 Prostar 285 inmar Fan belt length

Worthing skier
03-11-2012, 02:18 PM
Hi all

Does any one know the correct fan belt length on a 1993 Prostar with 285hp Inmar .

Many thanks


03-11-2012, 02:32 PM
Napa Xl 25 7448

Worthing skier
03-11-2012, 05:51 PM
Hi Thanks for the reply

I assume Napa is a parts supplier in the USA , on the other side of the pond where i am
(United Kingdom) we do not have this parts supplier ,do you know what length they are so I can match it up .

Many thanks


Jeff d
03-11-2012, 05:56 PM
In America we usually don't have fans on our Mastercrafts.

Seriously though, based on that napa part number it's probably a 48" (~122 cm) 6 groove serpentine belt. You should be able to find that at any auto parts supplier. There is some variation between what different manufacturers call 48". Sometimes they vary up to 1/4-1/2" in my experience. So, if you grab on 48" and it's a hair too tight or loose just try another manufacturer's 48" belt

03-11-2012, 05:57 PM

03-11-2012, 06:22 PM
email these folks - I am sure they would ship you the product...


03-11-2012, 06:41 PM
NAPA 25-7448 or 257448 Gates 7448 Auto V-Belt XL or Dayco 15448
Effective Length: 44.8 inches, Top Width: 15/32 inches, v height 5/16 inches
You can do the metric conversion.