Lister Petter Oil Pressure Switch 329-15110, A very common Lister Petter oil pressure switch ComPac 751-10590 O-Ring used in the

751-10590 O-Ring  used in the speed control /governor linkage

part number for that housing was 757-27900 and it was a polypropylene housing (plastic)

This will be item 14 in the Moffett drawing

Will work with lift pump 602-40480 AC Delco pump

*Attention* There were several types of air filter housing used on the LPW engines

Lister Petter Oil Pressure Switch 329-15110, A very common Lister Petter oil pressure switch ComPac 751-10590 O-Ring used in theLister Petter Oil Pressure Switch 329 15110, A very common oil pressure shutdown switch used in numerous Lister Petter applications. This will be item number 1 in the Lister Petter drawing (bottom picture).