Description
Overview:
This Bellows Kit is a replacement protective boot for Knott-Avonride cast overrun trailer couplings, made to restore the seal around the drawtube and damper assembly. Manufactured from tough, flexible black rubber, it helps keep out dirt, grit, and water while retaining lubricant, supporting smooth hitch operation and braking performance. It is designed for use on KFG13 and KFG20 couplings and is also used on other listed KFG models fitted with the same bellows. Ideal for plant, utility, and general braked trailers, it is a practical maintenance item when the original bellows becomes split, perished, or missing. Identified by OEM reference 577004, the kit provides a precise, direct replacement to maintain reliability and extend the service life of the coupling internals.
Key Features:
- Direct-fit bellows for Knott-Avonride KFG cast overrun couplings (see models below)
- Protects the overrun/damper mechanism by sealing against dust, grit, and water
- Helps maintain smooth telescopic movement and consistent braking response
- Durable, flexible rubber resists cracking, UV exposure, and road spray
- Supplied as a kit with the components required for a complete changeover
- OEM reference 577004 for easy identification and correct fit
- Straightforward installation with basic hand tools; no modification required
- Suitable for regular towing in UK weather and site conditions
- Reduces wear on moving parts and supports longer service intervals
Typical Applications:
Routine servicing of braked trailers used for construction, landscaping, agriculture, marine, or leisure. Replaces worn or torn bellows on Knott-Avonride cast couplings to keep the drawtube and damper clean, protect against contamination, and maintain safe, reliable towing on roads and worksites.
Also known as:
Coupling bellows kit, hitch gaiter, rubber boot, drawtube gaiter, damper bellows, overrun bellows, coupling dust boot, KFG bellows set.
Fits Models:
KFG13, KFG20, KFG27, KFG30
Alternate Part Numbers:
577-004, 577 004, 577004
Product Specifications
| L&S Part No. | 800 0052 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Knott-Avonride |
| OEM No. | 577004 |
| Unit of Sale | 1 |
| Machine Type | Trailers |
| Key Features | - Direct-fit for Knott-Avonride KFG13 and KFG20 couplings - Protects against dust, grit, and water - Durable rubber resists cracking and UV exposure - OEM reference 577004 ensures correct fit - Includes components for complete changeover |
| Fits Models | KFG13 | KFG20 | KFG27 | KFG30 |
