Cummins 4003966 Valve Stem Seal for Engine L9.5 ISL QSL Series, with main list of Cummins valve seals, in below:
Engine | Description | Part # | Part # | Part # | Part # | Part # |
B5.9 | valve stem seal | 3921640 | 3901097 | 3906080 | 3957912 | |
C8.3 | valve stem seal | 3927642 | 3919038 | 3915707 | 3912550 | 3912549 |
L8.9 | valve stem seal | 3948578 | 5253590 | 3943888 | 3943889 | 3978578 |
L8.9 | valve stem seal | 5448124 | ||||
ISB6.7 | valve stem seal | 3955393 | 3955394 | 4991571 | ||
ISF | valve stem seal | 4976170 | ||||
M11 | valve stem seal | 3328781 | 4003966 | |||
K19 | valve stem seal | 3021693 |