657-29501 TS2 Gasket/Joint set, this is a decarbon gasket set commonly known as a top end gasket set. LPWS4 US Military part number is

US Military part number is ( not used ) the NSN part number is N/A

This will be item 12 and 5 in the Lister Petter drawings

This will be item number 19 in the Lister Petter drawing

if the gasket is all that's needed that part number for that gasket is 303-00253

750-11340 Expansion plug set used only on the LPA model  engine

657-29501 TS2 Gasket/Joint set, this is a decarbon gasket set commonly known as a top end gasket set. LPWS4 US Military part number is657 29501 DeCarbon gasket set, commonly described as a top end gasket set, used for upper head repairs or valve jobs. The TS 2 engine was used in generator and pump applications both water and hydraulic. this engine, this engine was also used on Read ScreenAll screeners both RD 20 and RD 40 screeners. In the third picture you will find a list of the gaskets and seals in the set, please review this list so you are getting what you need, gasket sets are