Description
If you’ve ever had a valve drop into a cylinder during an engine rebuild or heard that telltale rattle of loose valve components, you know how critical these little pieces are. Valve keys (also called keepers or collets) lock your intake and exhaust valves in place, keeping everything timed right and preventing expensive engine damage. When they wear out or get lost during service, your engine won’t run properly – or at all.
What You’re Getting
- Key-type valve locks that secure both intake and exhaust valves
- TISCO quality construction designed to handle the stress of diesel engine operation
- Direct replacement for worn or missing valve keys during engine service
- Sold individually – order the quantity you need for your specific engine
Built for Real Farm Work
These valve keys fit Massey Ferguson tractors with both the 175 CID 4-cylinder diesel (uses 16 keys) and the 262 CID 6-cylinder diesel (uses 24 keys). Whether you’re rebuilding the engine in your utility tractor or doing a valve job on your row-crop machine, these keys keep your valves properly positioned and your timing right. They’re the same style as the original equipment, so they’ll fit and function just like the parts that came in your engine from the factory.
Made to Last
Engine valve keys take a beating from constant heat cycles, valve spring pressure, and the vibration of diesel operation. These TISCO keys are made from quality steel that handles the stress without cracking or wearing prematurely. They’re precision-made to fit snugly in the valve stem grooves while still allowing for easy installation during engine assembly.
Installation Notes
Installing valve keys requires a valve spring compressor and steady hands – it’s definitely an engine-out, heads-off job. Make sure your valve stems are clean and the grooves are in good shape before installing new keys. A drop of assembly lube helps them slide into position, and always double-check that both keys are properly seated before releasing spring tension.
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