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| Coupling Series | Models Covered | |
|---|---|---|
| KF (Cast) | ----- | KF 7.5 - KF30 |
| KRV (Cast) | ----- | ------------- |
| KFG (Cast) | ----- | KFG13 - KFG30 |
| Avonride | ----- | Couplings up to 2700 kg |
Genuine Knott replacement part: 577004
Length: Approximately 135 mm
Outer diameter (coupling side): 60 mm
Outer diameter (shaft side): 70 mm
Material thickness: 2.5 mm
Easy to fit for quick maintenance
2 in stock (can be backordered)
£14.40
(£12.00 ex VAT)
| Weight | 0.12 kg |
|---|---|
| Dimensions | 13.5 × .7 × .6 cm |
Keep your trailer’s coupling head protected and operating smoothly with this genuine Knott 577004 rubber bellow. Designed specifically for cast steel coupling heads, this high-quality dust cover prevents dirt, moisture, and road debris from entering the moving parts of your overrun coupling, reducing wear and extending service life.
Manufactured from durable, flexible rubber, the 577004 bellow provides a secure fit and maintains its shape under constant movement and load. It’s an essential replacement part to ensure safe and reliable towing performance.
Genuine Knott replacement part: 577004
Suited for KF/KFG 7.5 - 30 cast steel coupling heads
Protects against dust, water, and debris ingress
Made from strong, flexible rubber for long service life
Helps reduce wear on internal moving components
Easy to fit for quick maintenance
Trailer owners, fleet operators, and service workshops looking to maintain their Knott coupling heads with OEM-quality components.
