first clue would be the size truck it's in, the Loadmaster was 4000 series up I think - next would be the decal on the valve cover, if that's missing you'd have to pull it apart .... other than minor HP rating difference, the names are different, but you might find something else wink

Bill



Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics