These are brand new old stock SBI valves made for a Caterpillar C-15, they come as a full set of all 12 valves.
The part numbers for these valves from CAT are: 108-5910, 153-7023, and 236-5605 these are all interchange part number to the SBI valves listed here and these valves will perfectly replace any of these part numbers from Caterpillar.
S.B. International valves are proudly made in the USA and are held to the highest quality standard.
Please refer to the part numbers provided here in the description to determine fitment and compatibility, as well as reviewing all of the photos provided before making your purchase. Thank you for choosing EKG!