Shop toilet spares and cistern parts at Plumbco. Whether you're repairing a faulty flush, replacing a worn cistern component or upgrading an older toilet, our range includes replacement parts for a wide variety of toilet flushing systems.
Our toilet spare parts include toilet syphons, fill valves, flush valves, push buttons, diaphragms, washers and cistern repair kits. We stock trusted brands including Fluidmaster, Viva, Siamp and Wirquin, with individual replacement components and complete repair kits available.
Toilet Cistern Spares
Find replacement toilet cistern spares for a range of flushing systems, including ball valves, fill valves, flush cones, diaphragms and other cistern components. Whether you need a single replacement part or several components for a complete repair, check the product specifications and compatibility before ordering.
Toilet Flush Parts & Mechanisms
Our range of toilet flush parts includes flush valves, syphons, dual flush mechanisms, push buttons and replacement flush components. Options include bottom-entry and side-entry fill valves, dual flush valves and adjustable or universal parts designed to suit different toilet cisterns.
Browse our toilet spares below to find the replacement parts you need for your toilet or cistern repair.
The Siamp Optima 50 flush valve 32500210 features a 2" outlet and 470mm cable, providing reliable and efficient flushing for a wide range of toilet cisterns. Designed for easy installation and long-lasting performance, this universal flush valve ensures quiet operation, precise water control, and hassle-free maintenance - perfect for cistern repairs, upgrades, and plumbing projects.
The Skipper 45 Flush Valve SKU 32456010 is a reliable and efficient toilet flush mechanism designed for smooth operation and consistent performance. Ideal for repairs and replacements, it delivers dependable flushing for modern WC systems in domestic and commercial bathrooms.
The Siamp Diaphragm Washer 34951309 is a genuine replacement washer designed to fit Siamp side and bottom entry inlet valves. It is a popular replacement component for toilet cistern repairs, helping to restore the operation of compatible inlet valves.
With a sturdy construction and a 28mm width, this diaphragm washer has been used in toilet cisterns supplied by a number of leading bathroom manufacturers, including Twyford, Roca and VitrA, as well as various DIY retailers.
Ideal for plumbing maintenance and toilet cistern repairs, this genuine Siamp replacement part comes with a 10-year warranty.
The Siamp Optima 49 Button (34494909) is a durable, easy‑to‑install dual flush toilet cistern button designed for reliable performance and water‑saving operation. Compatible with a wide range of dual flush systems, this sleek push‑button control helps reduce water use while delivering smooth, consistent flush actuation — ideal for bathroom upgrades and cistern replacements.
The Optima 50 Button SKU 34495009 is a durable and stylish dual flush actuator designed for modern concealed cistern systems. Offering smooth operation and reliable performance, it’s ideal for bathroom upgrades, repairs, and replacement flush mechanisms in domestic and commercial installations.
The Siamp Storm 33A 32335510 is a durable and reliable toilet cistern fill valve designed for fast refill and quiet operation. Suitable for a wide range of cisterns, this high-quality valve ensures easy installation, precise water control, and long-lasting performance - ideal for cistern repairs, replacements, and bathroom plumbing projects.
Elevate your bathroom with the Kartell Project Round Soft Close Seat. Designed for comfort and durability, this soft close seat reduces noise and prevents slamming, ensuring a quieter, more refined bathroom experience. Its sleek, modern design seamlessly fits with any standard round toilet.
The Kartell Options 600 Soft Close Seat is a high-quality, durable toilet seat designed for easy installation on the Options 604 pan. Featuring a gentle soft-close mechanism, it prevents slamming and enhances the bathroom experience.
The Ideal Wrapover Soft Close Toilet Seat T679301 in white glossy finish combines modern style with everyday practicality. Measuring 365 x 425 x 40mm, this wrapover toilet seat features a reliable soft close mechanism that prevents slamming, reducing noise and wear. With a simple fingertip touch, the lid lowers smoothly and silently for a safe and controlled closure. Easy to install and built for durability, this white WC seat is ideal for bathroom upgrades, replacements and new installations.
The McAlpine Straight Telescopic 133mm WC Socket Extension WC-CON-EXT allows for flexible and precise adjustment of your WC socket connection. With a telescopic design, this extension ensures a secure fit and accommodates varying installation needs. Made from high-quality materials, it provides durability and reliability for your plumbing setup.
The Kartell dual flush concealed cistern with front and top access provides a sleek, space‑saving solution for modern bathrooms, ideal for use with back‑to‑wall WC units or vanity installations. Featuring easy front and top access for maintenance, WRAS approval and a chrome push button flush, this reliable concealed cistern delivers effective water control and efficient dual flush performance for everyday use.
The Kartell Flushplate ACC-FPB in black is a sleek, wall-mounted replacement for the ACC001N cistern, offering smooth operation and a modern, minimalist design. Its durable black finish adds a stylish and contemporary touch to any bathroom.
The Kartell Flushplate ACC-FPC in chrome is a sleek, wall-mounted replacement for the ACC001N cistern, providing smooth operation and a modern, minimalist look. Its durable chrome finish adds a stylish, contemporary touch to any bathroom.
The Viva Skylo Dual Entry Concealed Toilet Cistern (SKYCC01) is designed for modern UK bathrooms. Its dual-entry design allows flexible installation, while the compact concealed body provides efficient, water-saving dual flush performance for a reliable and tidy bathroom solution.
The Kartell Keytec Wall Mounting Frame 0.82m (ACC010) offers a strong, reliable solution for fitting wall-hung toilets with ease. Featuring an adjustable height range (780–980mm) and a 6L/3L dual flush cistern with front access, this unit is designed for quick installation and straightforward maintenance. Perfect for modern bathrooms seeking a clean, concealed look. Flushplate sold separately.
The PrimaPack WC Cistern C-Links (9CLINKS) set includes one large and one small link, designed to connect the cistern to the toilet flush mechanism securely. Made from durable materials, these C-links provide reliable performance and are ideal for replacing worn or broken cistern connectors, ensuring smooth and efficient toilet operation.
The Cedar Rimless Back to Wall WC offers a sleek, space-saving toilet solution ideal for modern bathrooms and WC units. Supplied with a wrapover soft close seat featuring lift-off functionality and top-fix hinges for easy cleaning, this rimless back to wall toilet delivers improved hygiene and a clean, minimalist finish. Designed for use with a concealed cistern, it supports dual 6L & 4L flushing and comes backed by a lifetime guarantee for lasting peace of mind. Dimensions: H 400 × W 360 × D 540 mm (tolerances apply).
The Larchwood Rimless Close Coupled Open Back WC offers a modern, hygienic solution for UK bathrooms. Supplied with pan, cistern and soft close seat with lift-off functionality and top-fix hinges, it ensures easy cleaning and everyday comfort. Features dual 6L & 4L push button flush, versatile soil pipe coupling options, and a lifetime guarantee for peace of mind. Dimensions: H 815 × W 360 × D 640 mm (tolerances apply).
The Strode Rimless Back to Wall Comfort Height WC – PLU0106144 combines modern design with practical comfort. Featuring a soft close seat and rimless pan for easy cleaning, it’s ideal for use with concealed cisterns (DIPC0128 or DIPC0130) and straight soil pipe connections. With a lifetime guarantee, it offers durability, style, and peace of mind for any contemporary bathroom.
The Kartell Keytec Wall Mounting Frame 1.12 m (ACC009) provides a versatile, space‑saving solution for modern bathrooms. Designed for wall‑hung WCs with adjustable height (1100–1300 mm) and width 500 mm, it includes a front‑access dual flush cistern (6 L/3 L) for easy maintenance. Quick to install and compatible with a separate flush plate, this robust frame delivers reliable performance with a 1‑year manufacturer’s warranty, making it ideal for both new installations and bathroom renovations.