Head to head
Ifor Williams GH146 vs Ifor Williams HB403
The Ifor Williams GH146 carries 1,757kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is 143kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams GH146 carries 1,757kg more.
- Gross weight: the Ifor Williams GH146 is rated 1.9 tonnes heavier gross.
- Unladen weight: the Ifor Williams GH146 weighs 143kg more empty.
Specifications side by side
| Ifor Williams GH146 | Ifor Williams HB403 | |
|---|---|---|
| Gross weight | 3500kg | 1600kg |
| Unladen weight | 910kg | 767kg |
| Payload | 2590kg | 833kg |
| Internal bed | 4.285m x 1.84m | - |
| Internal length | - | 3.08m |
| Internal width | - | 1.30m |
Sources: Ifor Williams GH146, Ifor Williams HB403. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GH146 if...
- you want one that carries 1,757kg more
- you want one that is rated 1.9 tonnes heavier gross
Aimed at plant hire operators who need the longest bed in the GH range for larger excavators or two smaller machines, with a tri-axle chassis to keep payload up within the 3500kg limit.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Buy or hire the HB403 if...
- you want one that is 143kg lighter empty
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams GH146 and the Ifor Williams HB403?
The Ifor Williams GH146 carries 1,757kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is 143kg lighter empty. The Ifor Williams GH146 is a a tri-axle long-bed plant trailer; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.
Which is lighter, the Ifor Williams GH146 or the Ifor Williams HB403?
The Ifor Williams HB403. It is 143kg lighter empty than the Ifor Williams GH146.
Which carries more, the Ifor Williams GH146 or the Ifor Williams HB403?
The Ifor Williams GH146, by 1,757kg.
Can I tow the Ifor Williams GH146 or the Ifor Williams HB403 on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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