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Thetford toilets are the most popular choice for caravan and motorhome owners, fitted as standard equipment in the majority of UK leisure vehicles from basic cassette models to sophisticated macerator systems. We have full access to Thetford's pare parts database, giving you access to Thetford toilet spares, including parts for older and discontinued models other people struggle to match. These detailed exploded diagrams cover the complete Thetford range including C200, C220, C260, C402, C403, C404, and C500 series toilets, making it easy to identify the exact part you're looking for.
What makes Thetford cassette toilets unique?
Thetford's cassette toilet design offers external access through a small service door on your vehicle's exterior, allowing you to remove the waste holding tank without entering the bathroom. This makes emptying and maintenance much more hygienic than traditional toilets. The permanently installed toilet bowl blends seamlessly with your bathroom interior, while the detachable cassette can be wheeled away on models like the C400 series for effortless handling.
Common Thetford toilet problems we can fix:
Most caravan owners will need toilet spares at some point - seals perish, pumps fail, and handles break with regular use. The diagrams cover everything from basic maintenance items like door seals and flushing mechanisms to complete cassette replacements and pump assemblies. Our exclusive connection to Thetford's parts database means we can identify the exact component using your model number with no guesswork, whether you're repairing a C200 from 2010 or a brand new C500 series model.
Thetford C263-S Cassette Toilet has a removable waste-holding tank mak
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The Thetford C-200 is a permanent, swivel bowl toilet for caravans and
The Thetford C-200 is a permanent, swivel bowl toilet for caravans and
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Thetford C-403L Bench model for Caravans and Motorhomes plus spare par
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Thetford Cassette Toilets for caravans and motorhomes. A full list of Thetford Spares are included on this page. Includes the C-200CW, C-402C and C2, C3 and C4, C200, C220, C250, C260,C400 and C500 cassette spare parts.Frequently Asked Questions
Why can't other retailers find the same Thetford toilet parts?We have access to Thetford's complete parts database and ensure we keep upto date. Other stores work from basic catalogues or outdated lists, while we can access every part Thetford makes, including discontinued models going back many years. This means we can supply parts for older C200 and C220 series toilets that other retailers simply cannot source.Where do I find my Thetford toilet model number to order the correct spare parts?Look for the data plate on your toilet bowl or cassette, usually showing the model number like C200, C220, C260, C402, etc. You'll also find a part number or serial number that starts with letters and numbers. Look at the relevant exploded diagrams, ensuring perfect compatibility.My Thetford toilet won't flush or has weak flushing - what spare parts do I need?Weak or failed flushing is usually caused by faulty flush pumps, blocked rinse nozzles, or worn pump seals. Electric flush pumps are the most common failure point on C400 and C500 series toilets. We stock all genuine Thetford flush pumps, rinse nozzles, pump seals, and water valves for all models with technical diagrams showing exact fitment.My Thetford cassette toilet is leaking from the bowl - can I get replacement seals?Yes, toilet bowl leaks are usually caused by worn blade seals or lip seals around the cassette connection. These rubber seals perish over time and need periodic replacement. We stock genuine Thetford seal kits for all cassette toilet models including the complete blade seal assemblies and all gaskets needed for a proper repair.Can I get Thetford toilet spares for very old models like C2 or C3 series?Yes, our exclusive database includes very old Thetford models including C2, C3, and early C200 series toilets. We can source genuine Thetford spares for toilets going back decades, including cassettes, pumps, and seals for models that other retailers consider obsolete. Many parts are still manufactured or we can supply updated equivalents.My Thetford service door won't close properly - do you stock replacement doors and locks?Yes, we stock complete Thetford service doors in various sizes and colours, plus individual components like locks, hinges, and seals. Service door problems are common due to warping or worn locks. We can identify the correct replacement door using your toilet model number, ensuring proper fit and colour match for your caravan.What's the difference between genuine Thetford spares and compatible parts?Genuine Thetford spares are made to exact specifications and come with warranty coverage. Compatible parts may fit but often use inferior materials that fail quickly, particularly seals and pumps. Thetford toilets have precise tolerances, so generic parts can cause leaks or poor performance. We only supply genuine parts verified through our direct database connection.How quickly can I get Thetford toilet spares delivered?Most genuine Thetford toilet spares are dispatched same day if ordered before 3:30pm. We offer next day delivery across the UK. If we don't have the item in stock then it we can usually order it into our warehouse within a couple of days.My Thetford toilet smells even when the flap is closed - what causes this and how do I fix it?Persistent odours from your Thetford toilet usually indicate a failing waste ball seal or lip seal that's no longer creating an airtight barrier. The waste ball seal can degrade over time and suffer from mineral scaling build-up, preventing a good seal that allows stinky smells from the black tank to come wafting up into your RV. Start by checking if water is staying in the bowl - if it drains out, the seal definitely needs replacement. Clean around the seal area thoroughly and try lubricating with Thetford Toilet Seal Lubricant. If cleaning and lubrication don't solve the problem, replace the waste ball seal kit.How do I properly winterise my Thetford toilet to prevent freeze damage?Freeze damage to Thetford toilets is extremely common and often voids warranty coverage. The most critical step is to disconnect the water line and completely drain it, allowing water to drain out of the fitting on the water module valve with the tiny ¼ inch hole. Turn off water supply, flush toilet to relieve pressure, disconnect the water supply line completely, and pump the toilet several times to expel all water from the pump mechanism. Add RV antifreeze to the flush tank and pump several times to circulate throughout the system. Add Thetford Toilet Seal Lubricant to the antifreeze in the toilet bowl to keep seals flexible.My Thetford toilet foot pedal is leaking water when I press it - what parts do I need?Leaking at the side pedal when depressing it is a common issue with Thetford Style II toilets, typically caused by worn seals in the water valve assembly. This problem affects models like 42070, 42072, and similar Style II toilets. The water valve replacement kit needed is part number 42049, which includes the valve components, O-rings, rubber stopper valve, spring, and toilet base O-ring. This is a relatively easy repair - disconnect the water supply line, remove the two nuts securing the toilet to the floor, lift off the hold-down bolts, replace the valve, and reinstall.Why does my Thetford toilet lose water from the bowl overnight, and how do I fix this?The main problem with toilet bowls not holding water is a worn or damaged waste ball seal that no longer creates a proper seal between the toilet bowl and black tank. This is particularly common on Style II models and can be caused by mineral buildup, debris on the seal, or natural wear over time. Try these solutions in order: clean thoroughly around the seal area and check for debris, apply toilet seal lubricant, use the foot pedal repeatedly after use to create a wiping action between the ball and seal. If these don't work, replace the waste ball seal kit.
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