Heatsinks almost never fail. IBM and Oracle heatsinks are specialty items — hard to find. Always cross-sell CPU and fan together.
PRODUCT OVERVIEW
The 42W2779 is a Lenovo industrial component. Key specifications include Type: Cooler, Suitable location: Processor, Compatible products: ThinkPad R61, R61e, R61i. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.