slingblade Posted May 23, 2015 Share Posted May 23, 2015 on my 85 rws 713 left side of the motor is this device,its got oil and airlines going into it,the truck is originally from the northwest,Oregon,Washington area,it had Canadian DOT #s,everyone who knows cummins that i show it to has never seen this before,does anyone know what its for? Quote Link to comment https://www.bigmacktrucks.com/topic/40137-whats-this/ Share on other sites More sharing options...
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