WRP4-16W1-56 Heatsink Retention Modules for Intel P4 Socket 478 Processor (Red). Keep your heatsink in place with this socket 478 heatsink retention module. This is a low cost way to replace your broken retention bracket, so you can keep that CPU safe.
 
Specifications:

WRP4-16W1-56 Pentium 4 Socket 478 Heatsink Retention Module (Red)

Compatible Models:

Socket 478 Motherboard