90Y5202 - IBM 130-Watts Heatsink for System x3550 M4 90Y5202 - IBM 130-Watts Heatsink for System x3550 M4 $53.57
94Y6614 - IBM 130-Watts Heatsink for System x3650 M4 94Y6614 - IBM 130-Watts Heatsink for System x3650 M4 $91.75
69Y5616 - IBM 130-Watts Heatsink for System x3650 M4 69Y5616 - IBM 130-Watts Heatsink for System x3650 M4 $91.75