Knott Coupling Damper - for Knott KF13
This Damper fits Trailers and Caravans with a Knott-Avonride coupling hitch.
Knott: KF13 / KFG13 / KRV13 AND Avonride AV13
Knott / Avonride Part no: 87000709
Overall length 545mm body length 330mm
Fitted to Ifor Williams 1300kg trailers with a Knott - Avonride coupling.
Ifor Williams part number P00937
Note some of the older dampers were black, they have now been replaced by this damper.
Each
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Contact us about this product
Contact us about this product
Delivery and Shipping
Delivery and Shipping
Orders are dispatched once payment has been confirmed. For courier deliveries, orders placed before the 1:30pm weekday cut-off are typically processed for the next available dispatch.
Delivery timeframes:
- Standard NZ courier: Dispatched the next working day after payment confirmation.
- Rural deliveries: Allow up to 5 working days.
- Large or bulky orders: Sent via bulk freight and may take 5-10 working days.
- International Airmail: Typically 3-14 days, with a maximum parcel weight of 20kg.
- International Courier: Available at an additional cost, with tracking included and a delivery target of 2-6 days. Maximum parcel weight is 30kg.
We accept returns of unused items in their original packaging within 14 days of purchase. Please contact us first to obtain a return authorisation before sending any items back.
Once your return is received and approved, a refund or store credit will be issued.
Please note:
- Special-order or imported items may not be eligible for return. In some cases, returns may be considered if the customer covers any associated freight costs.
- Refunds for credit card and PayPal purchases are subject to a 3% non-refundable transaction fee.
- Most returns incur a 10% restocking fee, capped at $25.
- Original shipping costs are non-refundable.
- Electrical items that have been used, damaged, or returned without their original packaging cannot be returned.
- Boat rollers and certain products supplied from the Rubbermark warehouse are subject to a 15% restocking fee.
For full details, please see our complete Delivery & Shipping Policy
Return Policy
Return Policy
We accept returns of unused items in their original packaging within 14 days of purchase. Please contact us first to obtain a return authorisation before sending any items back.
Request a return here.
Once your return is received and approved, a refund or store credit will be issued.
Please note:
- Special-order or imported items may not be eligible for return. In some cases, returns may be considered if the customer covers any associated freight costs.
- Refunds for credit card and PayPal purchases are subject to a 3% non-refundable transaction fee.
- Most returns incur a 10% restocking fee, capped at $25.
- Original shipping costs are non-refundable.
- Electrical items that have been used, damaged, or returned without their original packaging cannot be returned.
- Boat rollers and certain products supplied from the Rubbermark warehouse are subject to a 15% restocking fee.
For full details, please see our complete Returns Policy:
How to identify your AL-KO Damper for your Coupling

The Damper is identified by the Delta number, if you know the Delta number you can use this to find the correct Damper.
Your coupling assembly comes in two parts (refer to the diagram).
- The Coupling Head - the part that attaches to your vehicle
- The Delta Body - the part that attaches to the drawbar of the caravan or trailer
The Delta Body will have a series of numbers stamped on it in the location highlighted - we are looking for the number that denotes the delta number. Delta numbers will be 150V, 161S, 200V or 251S or similar.
Use this Delta number to find your replacement damper here.
How to know if I need to replace my Coupling Damper?
A coupling damper is a device that improves the quality and precision of your braking when towing by assisting with the gradual application of the brakes both on and off. The correct operation of a coupling damper gives smooth and controlled braking. When the damper has failed, it is very noticeable by the fierce application of the brakes or ‘snatching’ when the towing vehicle’s brakes are applied.
Before replacing the damper it may be worth checking the adjustment of the brake shoes to the drums. Sometimes badly adjusted brakes can have the same effect as a failed damper.
Payment & Security
Payment methods
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