Interpump KIT21 – Head ring kit 20mm
£6.04 excl. VAT + £1.21 VAT(£7.25 incl. VAT)
Available for immediate dispatch.
Head ring kit 20mm for a compatible Interpump assembly. Match KIT21 to your parts diagram and check the listed kit contents before ordering.
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Call 01652 659759 · Email Idro PowerDescription
Replacement rings for the specified positions in a compatible Interpump pump assembly.
Kit details
Part reference: KIT21
Head ring kit 20mm. 6 × 20mm head rings.
Before you order
Match the kit reference and the ring positions in the parts diagram. Similar-looking head, intermediate and backing rings can have different jobs and are not selected by diameter alone.
Confirm KIT21 in your equipment’s parts diagram. If you are unsure, send us the pump or assembly model and a photo of its identification plate so we can help identify the right part.






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