Toilet Parts & Accessories

Toilet parts and accessories are the components that attach to or operate an installed toilet: seats and lids, seat hinges and hardware, bidet seats, washlets, and flush actuators. They replace worn or broken components, add functions such as bidet washing, and match the toilet's bowl shape, tank design, and finish.

This category covers the parts a plumber or contractor handles at the seat and on the outside of the tank. Most fit residential and light commercial tank toilets, and many are made as direct replacements for specific manufacturer models. Tank internals and flanges are listed under Toilet Parts & Repair, and closet bolts and mounting kits are listed under Toilet Installation Parts. Sorting toilet replacement parts by location on the fixture, from the seat hinge to the trip lever, makes it easier to order the right component the first time.

Product Group Explanation: Toilet Parts and Accessories Products

Toilet parts and accessories in this category fall into five functional groups. Each group connects to a different part of the fixture and is selected by bowl shape, tank design, or available power.

Toilet Seats & Parts

Toilet seats mount to the bowl through two holes behind the rim and secure with bolts and nuts or top-fix hinges. This group includes complete seats with lids, slow-close seats, and individual toilet seat hinges, bolts, and mounting toilet hardware. See Toilet Seats & Parts.

Bidet Seats

A bidet seat replaces the standard seat and adds a wash wand fed from the toilet's cold water supply. Non-electric models run on line pressure and use a side-mounted control. Electric models can add warm water, a heated seat, and an air dryer, and they plug into a grounded outlet near the toilet. Browse Bidet Seats.

Washlets

Washlet is the TOTO name for its electronic bidet seat line. These units install on compatible bowls in place of the standard seat. Depending on the model, features include warm water washing, seat heating, and adjustable spray settings operated from a side panel or remote.

Flush Actuators

Flush actuators start the flush cycle. A trip lever mounts through the tank wall and lifts the flapper through a chain or lift arm. A toilet flush button mounts in the tank lid and operates single or dual flush valves through a push rod or cable. Match the actuator to the valve type and mounting location. Shop Flush Actuators.

Toilet Accessories

Toilet accessories are the add-on items that complete or extend an installation, such as mounting kits, adapters, and trim pieces for seats and bidet seats. Keeping these toilet accessory products and small toilet fittings on hand prevents a return trip when a seat or bidet install needs one more part.

How Toilet Parts Work and Where They Install

Seats and Hinges

The seat hinge carries the load of the seat and lid and holds both in alignment over the rim. Slow-close hinges use a damper to lower the seat and lid under control, which reduces impact on the bowl. Top-fix hinges tighten from above, which suits bowls with limited access underneath.

Flush Actuators

Pressing the lever or toilet flush button opens the flush valve, which channels tank water into the bowl. Dual flush actuators open the valve for a partial or full volume flush. Actuators install on tank-type toilets in homes, offices, and multi-unit buildings.

Bidet Seats and Washlets

A bidet seat connects to the toilet supply line through a T-adapter that splits water between the tank and the wash wand. Electric units also need a grounded receptacle within reach of the power cord. Common installations include residential bathrooms, rental units, and senior living facilities.

Key Specifications and Planning Steps

Bowl Shape and Seat Size

Round bowls measure about 16.5 inches from the center of the mounting holes to the front of the rim, and elongated bowls measure about 18.5 inches. Standard mounting hole spacing is 5.5 inches. Record all three measurements before ordering a seat.

Hinge and Mounting Hardware

Check whether the bowl allows access to the nuts from below or requires top-fix toilet hardware. Confirm that replacement hinges match the seat's mounting pattern.

Actuator Fit

For trip levers, note the mounting position: front, side, or angle. For push buttons, record the lid thickness, the lid hole diameter, and the flush valve model.

Power and Water Supply for Bidet Seats

Size the T-adapter to the supply connection, commonly 3/8 inch compression at the shutoff valve or 7/8 inch ballcock thread at the fill valve. Electric seats need a GFCI-protected receptacle in most bathrooms; follow local code and the manufacturer's instructions. For closet bolts and mounting kits, see Toilet Installation Parts.

Choosing the Right Toilet Parts and Accessories

Start with the toilet manufacturer and model number, usually stamped inside the tank on the back wall. Confirm bowl shape and hole spacing for seats, valve type for actuators, and supply and power for bidet seats. Match lever and button finishes to adjacent trim, such as chrome, brushed nickel, or matte black. Check whether the replacement ships with hardware or needs it ordered separately. For service vans, stock common toilet parts such as replacement seat hinges and trip levers alongside toilet repair supplies. For multi-unit projects, order toilet parts and accessories by fixture model so toilet replacement components stay consistent across units.

Frequently Asked Questions

Where can a plumbing contractor find toilet parts and accessories like seats, bidet seats, and flush actuators in one place?

This category groups toilet parts and accessories together: seats and hinges, bidet seats, washlets, flush actuators, and add-on accessories. Tank internals and mounting parts sit in the adjacent repair and installation categories, so one order can cover the full fixture.

What toilet replacement parts should a plumber keep on the truck for residential service calls?

Common toilet replacement parts for service calls include round and elongated seats, replacement toilet seat hinges, trip levers in front and side mount styles, and bolt kits. Adding fill valves and flappers from the repair category covers most tank toilet calls.

What is the difference between a bidet seat and a washlet?

A bidet seat is any toilet seat that adds a wash function, electric or non-electric. Washlet is the TOTO trademark for its electronic bidet seat line. Both come in round and elongated sizes, so match the seat to the bowl shape and confirm model compatibility.

How do I measure a toilet bowl to order the right round or elongated seat?

Measure from the center of the two mounting holes to the front edge of the rim. About 16.5 inches indicates a round bowl, and about 18.5 inches indicates an elongated bowl. Also record the bowl width and the hole spacing.

Should I use a trip lever or a push button flush actuator?

Use the actuator that matches the tank and flush valve. Front, side, and angle mount trip levers operate flapper valves through a chain or lift arm. Push buttons mount in the lid and operate canister or dual flush valves, so confirm the valve model first.

My toilet seat keeps shifting side to side. How do I fix it?

A shifting seat usually has loose nuts or worn hinges. Tighten the mounting bolts first. If the seat still moves, replace the toilet seat hinges or install top-fix toilet hardware with expanding anchors that grip the mounting holes.

The toilet flush button is stuck or doesn't flush fully. What part do I need?

Check the push rod or cable between the toilet flush button and the flush valve for misalignment or mineral buildup. If the button is cracked or the rod length no longer matches the valve, replace it with an actuator made for the same valve model.

How do I tell which flush actuator fits a dual flush toilet tank?

Find the flush valve brand and model inside the tank, then choose an actuator listed as compatible with that valve. Check the lid hole diameter and lid thickness, since push button actuators are sized for specific lid depths.

What electrical and water connections does an electric bidet seat need?

An electric bidet seat needs a water connection at the toilet supply, usually through a T-adapter, and a grounded receptacle within reach of the power cord. Bathroom receptacles typically require GFCI protection under the National Electrical Code. Confirm local requirements before installation.

How do I replace a broken slow-close toilet seat hinge without replacing the whole seat?

Order a hinge set made for that seat model. Remove the bolt caps, loosen the nuts, and lift off the old hinges. Install the new hinges on the same mounting pattern and tighten evenly so the seat closes without binding.

What counts as toilet accessories, and how are they different from tank repair parts?

Toilet accessories attach to the outside of the fixture or add functions, such as seats, bidet seats, actuators, and mounting kits. Tank repair parts, including fill valves and flappers, operate inside the tank and are grouped separately as toilet repair supplies.

Are toilet seats universal, or do I need to match the seat to the toilet brand?

Most seats fit any bowl of the same shape with standard 5.5 inch hole spacing. Some one-piece and skirted toilets use proprietary hinges or seat profiles, so check the toilet manufacturer's specifications for those models.

How long does it take to install a bidet seat on an existing toilet, and what tools are needed?

Most bidet seat installations on an existing toilet take under an hour. Typical tools include an adjustable wrench, a screwdriver, and a towel for residual water. Shut off the supply, install the T-adapter, mount the seat plate, and check every connection for leaks.

What should a contractor check before ordering toilet parts and accessories for a multi-unit project?

Confirm the toilet model, bowl shape, and flush valve type for each unit type, along with outlet locations for any electric bidet seats. Order toilet parts and accessories by fixture model and finish so replacements stay consistent across units.

What toilet hardware comes with a replacement toilet seat?

Most replacement seats ship with hinges, bolts, nuts, and washers. Top-fix anchors, bolt caps, or hinge covers may be sold separately depending on the model. Check the seat's parts list before ordering additional toilet hardware.