Description
If you’ve been inside your Perkins AD3-152 engine doing valve work or a head rebuild, you know these little valve keys are critical for keeping everything together. These half-moon shaped pieces lock the valve collets in place and hold the valve spring retainer tight against spring pressure. When one goes missing or cracks, your valve can drop right into the cylinder – and that’s a day-ender nobody wants to deal with.
What You’re Getting
- Complete set of 12 valve keys – enough for all intake and exhaust valves in your 3-cylinder engine
- Precision-machined steel construction that handles the constant stress of valve operation
- Exact OEM specifications ensure proper fit in Perkins valve assemblies
- Heat-treated for durability and resistance to cracking under load
- Direct replacement – no modifications needed during installation
Built for Proven Engines
The Perkins AD3-152 is the reliable heart of countless Massey Ferguson tractors, especially the legendary MF 135 and 240 series that have been farm favorites for decades. The MF 135 with its reliable Perkins AD3.152 three-cylinder engine has been a farm favorite for decades. Whether you’re running a loader, mowing pastures, or pulling implements, this 45-horsepower workhorse needs proper exhaust flow to deliver full power.
Made to Last
These aren’t generic hardware store keys – they’re engineered specifically for the demands of diesel engine operation. The steel is heat-treated to handle the temperature cycling and vibration that comes with thousands of hours of field work. Quality valve keys mean your valve train stays tight and quiet, keeping compression where it belongs.
Installation Notes
When you’re doing valve work, always replace these keys as a set. Check the valve spring retainers and collets while you’re in there – if the keys were worn, chances are other parts need attention too. A valve spring compressor makes the job much easier, and remember to keep everything organized so the valves go back in their original positions.
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