Original 320/03528 valve cotter (collet / keeper) by JCB. This is a precision timing system component dedicated to JCB DieselMax and EcoMax engines. This part is responsible for securely locking the valve spring retainer to the valve stem.
By choosing genuine JCB parts, you ensure a perfect fit and highest build quality. Original components guarantee restoring the machine's factory performance and engine safety.
| Machine Type | Models (DieselMax Engine) |
|---|---|
| Backhoe Loaders | 3CX, 3DX, 4CX, 5CX |
| Telehandlers | 531-70, 535-95, 541-70, 500 Series |
| Excavators | JS130, JS145, JS160, JS220, JZ140, X Series |
| Other Equipment | Teletruk, Vibromax Rollers, Generators |
Application applies to JCB DieselMax and EcoMax engines. Typically 2 pieces per valve.
The cotter works directly with the valve (clamping onto its stem) and the valve spring retainer. When overhauling the head, it is also worth replacing the valve stem seals.
Improper installation or damage to the valve cotter causes the spring to "unlock", resulting in the valve dropping into the cylinder. This leads to total engine destruction (piston, head, cylinder). Always ensure cotters are seated correctly.
The 320/03528 cotter is a small, two-piece conical element that maintains valve spring tension, allowing it to retract the valve after opening.
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No. The price refers to 1 piece (one half). To secure one valve, you need 2 pieces of this product.
Yes, in JCB DieselMax engines, the same cotter type (320/03528) is typically used for both intake and exhaust valves.
Do you have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you select the right part to get your equipment back to work as quickly as possible.
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