STANADYNE TEST INJECTORS
Part Number Orifice Plate NOP Nozzle
Test Injector Assemblies
34669 .4 mm Orifice Plate
781173
207 bar
3000 psi
771135
ISO-7440
29724 .5 mm Orifice Plate
781174
207 bar
3000 psi
771135
ISO-7440/SAE J968
37972 .5 mm Orifice Plate
781174
207 bar
3000 psi
771135
Matched Set of 6
29726 .5 mm Orifice Plate
781174
117 bar
1700 psi
36936
ISO-7440/SAE J968
36950 .5 mm Orifice Plate
781174
207 bar
3000 psi
36936
Low Dead Volume*
36951 .5 mm Orifice Plate
781174
250 bar
3625 psi
36936
Low Dead Volume*
29725 .6 mm Orifice Plate
781175
207 bar
3000 psi
771135
ISO-7440/SAE J968
37392 .6 mm Orifice Plate
781175
207 bar
3000 psi
36936
Low Dead Volume*
37973 .6 mm Orifice Plate
781175
207 bar
3000 psi
771135
Matched Set of 6
34670 .7 mm Orifice Plate
781176
207 bar
3000 psi
771135
ISO-7440
34671 .8 mm Orifice Plate
781177
207 bar
3000 psi
771135
ISO-7440
*  Stanadyne Low Dead Volume injectors have their own unique flow characteristics and do not conform
to any specific standard. Therefore they are to be used for calibrating Stanadyne fuel injection pumps only.
Test Injector Service Parts
Part Number Description
37972 .5 mm Orifice Plate - Matched Set of 6
37973 .6 mm Orifice Plate - Matched Set of 6
780104 Pressure Adjusting Spring - 117 bar
781168 Pressure Adjusting Spring - 207 bar