Shop DO35 & DO45 Hitch Kits
The DO35 and DO45 are two of the most widely used coupling systems on Australian caravans and trailers. Whether you are replacing a worn coupling or fitting out a new setup, this collection brings together complete DO35 and DO45 hitch kits, tow pin kits and locking pins so you can find everything in one place.
Choosing the Right DO35 or DO45 Hitch Kit
The main difference between the two systems comes down to weight rating. The DO35 is rated to 3,500kg and suits the majority of single-axle caravans, while the DO45 handles up to 4,500kg for heavier rigs. Both use the same pin-coupling design, but the components are not interchangeable. When selecting a kit, check your coupling head or refer to your manufacturer's specifications to confirm which system you are running. You can also browse our wider range of tow hitches or caravan coupling kits and tow pins for additional options.
DO35 and DO45 Hitch Kits from Cruisemaster
All of the DO35 and DO45 products in this collection are from Cruisemaster. The range includes:
- DO35 V3 Plus 3500kg Hitch Kit
- DO45 Plus 4500kg Hitch Kit
- Replacement tow pin kits for both DO35 and DO45
- Keyed locking pins for added security
You can also browse the full Cruisemaster caravan hitches range. For added security at the coupling point, take a look at our caravan hitch locks, which include locking pins alongside options from Purpleline and Gen Y.
If you are looking at your towing setup more broadly, our towing safety accessories collection covers chains, shackles and related gear.
Frequently Asked Questions
What is the difference between a DO35 and DO45 hitch?
The DO35 is rated to 3,500kg and is the more common size for standard caravans. The DO45 is rated to 4,500kg and is designed for heavier setups. Both use a pin-style coupling but the parts are sized differently and are not interchangeable.
Do I need to replace the tow pin as well as the hitch kit?
Tow pins are a serviceable component and should be inspected regularly. If your pin shows signs of wear or play, replacing it at the same time as the hitch kit is worth considering. Both complete kits and individual tow pin kits are available in this collection.
Can I add a locking pin to my DO35 or DO45 coupling?
Yes. Locking pins for both the DO35 and DO45 are available in this collection. They replace the standard pin and add a keyed lock for security. You will also find them in our caravan hitch locks range.