You can replace a sink sprayer yourself with basic tools and no plumbing experience

A kitchen sink sprayer that leaks, loses pressure, or stops working altogether does not require a plumber. The sprayer head unscrews from the hose, the hose pulls out from under the sink, and a new one slides in and screws back on. The whole job takes about 30 minutes and costs between $15 and $50 for the replacement sprayer, depending on the brand and finish you choose.

The sprayer is held in place by a collar nut under the sink — the same nut that holds the faucet body itself. You do not need to touch the faucet. You only need to disconnect the hose from that collar nut, pull the old hose up through the sink deck, and feed the new one back down.

Key Takeaways

  • The sprayer head unscrews from the hose with your hand; the hose itself is held by a collar nut under the sink that you loosen with an adjustable wrench.
  • Before you buy a replacement, check whether your faucet uses a standard 7/8-inch collar or a proprietary connection — this determines which sprayers will fit.
  • Replacement sprayers are sold at hardware stores and online; common brands include Moen, Delta, Kohler, and generic universal models that work with most faucets.
  • The job requires only an adjustable wrench, a bucket to catch water, and possibly a flashlight — no special plumbing tools or skills.
  • If the hose is stuck or the collar nut will not budge, explore penetrating oil and waiting 15 minutes usually solves the problem.

What you need before you start

Gather an adjustable wrench, a bucket or towel to catch water that drains from the hose, a flashlight if the space under your sink is dark, and the replacement sprayer. If the collar nut is stuck, have penetrating oil (like WD-40 or Liquid Wrench) on hand.

Before you buy the replacement, identify what type of connection your faucet uses. Most kitchen faucets use a standard 7/8-inch collar nut, but some brands — particularly Kohler and Moen — use proprietary connections. Look under the sink at the collar nut holding the hose. If it is a straightforward hexagonal nut, you can use any universal sprayer. If it has a brand name stamped on it or looks unusual, search online for "[your faucet brand] replacement sprayer" to find the right part.

How to disconnect the old sprayer hose

Turn off the water supply under the sink by closing the shut-off valves on both the hot and cold lines. If your sink has no shut-off valves, turn off the main water supply to the house. Open the sprayer to release any pressure in the line, then place a bucket under the collar nut to catch water.

Locate the collar nut under the sink where the hose connects. Use your adjustable wrench to loosen it by turning counterclockwise. If it will not budge, spray penetrating oil around the nut, wait 15 minutes, and try again. Once it is loose enough, unscrew it the rest of the way by hand.

Pull the old hose straight up through the hole in the sink deck. It should slide out easily. If it catches on something, wiggle it gently side to side as you pull. Once the hose is out, you can unscrew the old sprayer head from the hose by hand and set both aside.

Installing the new sprayer hose

Screw the new sprayer head onto the new hose by hand. Tighten it firmly but do not use a wrench — hand-tight is correct. Feed the hose down through the hole in the sink deck from above. Make sure it sits flat and does not kink as it goes down.

Under the sink, slide the collar nut onto the end of the new hose and thread it onto the connection point. Hand-tighten it first, then use your adjustable wrench to snug it down. You want it tight enough that it does not leak, but you do not need to force it — over-tightening can crack plastic fittings.

Turn the water supply back on. Open the sprayer and let it run for a few seconds to flush out any debris from the new hose. Check under the sink for leaks around the collar nut. If water drips, tighten the nut a quarter turn with your wrench and check again.

Choosing the right replacement sprayer

Universal sprayers work with most standard faucets and cost $15 to $25. Brands like Danco and Pfister make reliable universal models that fit any 7/8-inch collar. If you want to match your existing faucet brand, Moen, Delta, and Kohler all sell replacement sprayers for their own faucets, usually priced between $25 and $50.

The main difference between budget and premium sprayers is the spray pattern and the durability of the internal valve. Budget models have one or two spray patterns; premium models offer three or more. If you use the sprayer heavily, a name-brand replacement from your faucet manufacturer will last longer than a generic universal model.

Check the finish of your current faucet — chrome, stainless steel, brushed nickel, or oil-rubbed bronze — and buy a sprayer in the same finish so they match. The finish does not affect performance, only appearance.

What to do if something goes wrong

If the collar nut leaks after you tighten it, the rubber washer inside may be worn or missing. Turn off the water, unscrew the nut, and look inside. If there is no washer or it looks cracked, you can buy a replacement washer for $2 to $5 at any hardware store. Slide the new washer onto the hose before you screw the nut back on.

If the hose is stuck and will not pull up through the sink deck, do not force it — you may crack the fitting. Spray penetrating oil around where the hose enters the deck, wait 20 minutes, and try again. If it still will not move, the hose may be kinked or caught on something inside the faucet body. Wiggle it gently in all directions as you pull, or ask someone to help you explore steady pressure while you work the hose side to side.

If the new sprayer leaks from the head itself, the problem is usually a cracked internal valve. This cannot be repaired — you will need to return the sprayer and buy a different one. Most hardware stores and online retailers accept returns on unused or defective sprayers within 30 days.

When to call a plumber instead

If the collar nut is corroded so badly that your wrench cannot grip it, or if the hose is permanently stuck and will not move even with penetrating oil and time, a plumber can remove it without damaging the faucet. This costs more than the sprayer itself, but it is faster than spending an hour trying to free a stuck connection.

If water leaks from the faucet body itself — not from the sprayer connection — the problem is inside the faucet, not the sprayer. Replacing the sprayer will not fix it. In that case, you either need to repair the faucet or replace the entire faucet assembly, both of which are beyond a sprayer replacement.

Frequently Asked Questions

Can I use any sprayer on my faucet?

Not always. Most faucets use a standard 7/8-inch collar, and any universal sprayer will work. But Kohler, Moen, and some other brands use proprietary connections. Check your faucet brand before you buy — if you buy the wrong type, it will not screw on.

Why does my new sprayer leak from the connection under the sink?

The collar nut is probably not tight enough, or the rubber washer is missing or damaged. Turn off the water, unscrew the nut, and check for a washer inside. If there is none or it is cracked, buy a replacement washer and install it before you screw the nut back on.

How do I know if my sprayer is broken or just clogged?

Unscrew the sprayer head from the hose and hold it under running water. If water flows through it normally, the clog is in the hose or the faucet connection. If water does not flow, or flows only weakly, the sprayer head is clogged. Soak the head in white vinegar for an hour to dissolve mineral deposits, then rinse and try again.

Do I need to turn off the water to replace the sprayer?

Yes. Even though the sprayer is a small part, the hose is under pressure when the water is on. Turning off the supply prevents water from spraying out when you disconnect the hose, and it makes the job cleaner and safer.

What if the sprayer head keeps unscrewing during use?

The connection is not tight enough. Unscrew the head, wrap the threads with plumber's tape (also called PTFE tape), and screw it back on. The tape fills small gaps and creates a tighter seal. Do not use more than two or three wraps, or the head will be too tight to unscrew later.