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A new back-up ring for unloaders. Made with a durable construction. It is a trusted factory part from Giant Pumps.
The Giant Pumps 11508 is a new back-up ring for the valve stem inside unloaders. It is used to replace one that is worn to help ensure your pump functions properly. This back-up ring is constructed with the same material as the original to deliver the same chemical compatibility and longevity. Since this is a genuine OEM part, it is sure to fit the recommended unloader models.
Specifications:
Compatible Unloaders: