Valve stems extend out of the wheel rim so that the tire can be inflated, deflated, and the pressure checked. Valve stems may need to be replaced over time to avoid pressure loss.

Valve cores screw into the tire valve stem and may need replacement over time to avoid pressure loss.

Tire valve caps replace lost or damaged caps to protect the valve and prevent loss of pressure.

Tire valve extensions add length to the valve stem to ease accessibility when checking tire pressure and inflating tires. They are often used for deep-rim wheels on off-road vehicles.

Tire valve adapters convert the bore size of a valve or the type of valve, such as a Presta valve to a Schrader valve, to fit the inflation requirements of the tire.

Tire valve grommets slide onto the valve stem to seal the stem's base against the rim of the wheel. They prevent corrosion around the valve stem by sealing out dirt and moisture, and are often used on off-road vehicles.

Rim fittings and nuts replace worn tire valve parts to ensure a tight seal and prevent pressure loss.