Description
Overview:
This Trailer Coupling Head, 1700 kg, for 50 mm round drawbars (MPN 763 789), is a heavy-duty pressed steel unit designed for general trailer and plant transport use. It mounts to a 50 mm (1.97 in) round tube drawbar using two M12 bolts and provides a secure connection to a towing setup. The coupling body is zinc plated to resist corrosion and features both wear and correct-attachment indicators for quick visual checks during service. R55 approval with D 15.8 kN and S 100 kg ratings confirms compliance for road use in the intended load range. Mounting holes on the side and top offer flexible fixing options to suit different trailer head arrangements. Supplied without a lock, it accepts the optional Maypole security lock and a soft dock to protect the towball and reduce noise. Suitable as a direct replacement for AL-KO AK160B on compatible installations.
Key Features:
- 1700 kg capacity (1.7 t / approx. 3748 lb)
- For 50 mm (1.97 in) round tube drawbars
- Fixing with 2 x M12 bolts (12 mm / 0.47 in), minimum grade 10.9
- Heavy-duty pressed steel construction with zinc plated finish
- R55 approved: D-value 15.8 kN (approx. 3553 lbf), S 100 kg (220 lb)
- Wear indicator and correct attachment indicator on the coupling head
- Mounting holes provided in both side and top faces for flexible installation
- Supplied without lock; compatible with optional lock MP478B
- Can be fitted with soft dock MP1940
- Suitable as a replacement for AL-KO AK160B
Typical Applications:
Used at the front of trailers with 50 mm round drawbars on general purpose, plant, utility and light commercial transport trailers. Suitable where a 1700 kg rated pressed steel coupling is required, including replacements for AL-KO AK160B on compatible setups. Commonly installed by trailer builders, fleet maintenance teams and service workshops using two M12 high-tensile bolts.
Also known as:
- Maypole part number MP1945
- AL-KO AK160B replacement coupling
- 50 mm trailer coupling head
- 1700 kg pressed steel tow hitch
- Ball coupling head
Product Specifications
| L&S Part No. | 763 789 |
|---|---|
| Part Type | Genuine Part |

