Fits over 3.125 inch manifold guages used as protective bump guards.
No other part numbers with same form, fit, and function found.
NSN 5990-01-188-7309
NSN 6645-01-486-1139
NSN 5990-00-140-1159
NSN 5895-00-637-2658
NSN 5965-01-420-6613
NSN 6320-01-157-9076
NSN 5965-01-559-4606
NSN 6220-01-370-4215
NSN 5920-01-604-5139
NSN 5905-01-392-1210
NSN 5998-01-631-7538
NSN 2925-00-288-1394