Do you repair raw water pumps for boats?

Yes. We repair and replace raw water pumps on inboard, sterndrive and outboard engines, whether the problem is a leaking seal, a cracked housing or a failed impeller. We find the cause, give you a written estimate and test the cooling flow after the repair.

How do I know if my water pump needs repair?

Look for symptoms like engine overheating, weak water flow from the exhaust, abnormal engine temperature alarms, or a whining noise near the pump. A failing impeller or blockage is often the cause.

Can you replace the impeller on-site?

Often, yes. Engine-mounted raw water pumps on inboards, and many outboards with the motor tilted up, can be done at your slip. On sterndrives with the pump inside the drive, such as the MerCruiser Alpha, the drive has to come off, so the boat must be out of the water. When we know the engine model, we bring the right impeller kit to the visit.

How much does it cost to repair or replace a marine water pump?

Labor is $150 an hour plus parts and a trip fee per visit by distance, from $30 in San Pedro to $110 in Newport Beach. An impeller or pump replacement usually takes 1-2 hours; pumps that are hard to reach or inside a sterndrive take longer. You get a written estimate before any work starts.

Do you service both seawater and freshwater cooling systems?

Yes, we service both raw water (seawater) and closed-loop freshwater cooling systems. We inspect heat exchangers, replace water pumps, clean strainers, and flush lines for proper flow and cooling.

Can a bad water pump damage my marine engine?

Definitely. A faulty pump can lead to severe overheating, warped heads, or engine failure. That’s why we recommend annual impeller checks and pump inspections – especially before the season starts.

Do you offer a warranty on water pump repairs?

Yes. Our workmanship is warranted for 90 days from the invoice date; new pumps and impellers carry their manufacturer's warranty. Your invoice lists the work and the parts, so you can keep it with your engine records.

Marine Water Pump Repair – Fast Boat Cooling Fix

Marine Water Pump Repair – Fast Boat Cooling Fix (2)

Marine Water Pump Repair– Raw Water and Circulation Pumps

Marine water pump repair at your slip, dock or storage yard from Marina del Rey to Newport Beach, or at our San Pedro shop. We inspect the pump, find the fault, replace worn parts and test the cooling flow, and we quote any repair before the work starts.

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$150 /hr

Labor estimate Usually 1–2 hours

Book sends us a ticket; nothing is charged online. Before any work you get a written estimate for labor, parts and the trip fee, and nothing is done without your OK.

Trip fee By distance, one way: $30 in San Pedro, $50 in Long Beach

San Pedro$30
Wilmington, Terminal Island$40
Long Beach: Shoreline, Rainbow Harbor$50
Long Beach Marina, Alamitos Bay$60
Redondo Beach$60
Seal Beach, Huntington Harbour$75
Marina del Rey$85
Newport Beach$110

Farther away: $25 plus $2.50 a mile, one way from our San Pedro shop. No trip fee when the boat comes to our shop, or for plan members. The work of a visit is at least $150; the trip fee is on top.

Registered in California: Breeze Marine Boat Service LLC, San Pedro
Where we work: At your slip from Marina del Rey to Newport Beach, or in our San Pedro shop
Questions first: (213) 693-0224 or submit a ticket

About this service

Marine Water Pump Repair in Long Beach and San Pedro

We repair raw water and circulation pumps on inboards, sterndrives and outboards, at your slip, dock or storage yard from Marina del Rey to Newport Beach, or at our San Pedro shop. A weak pump lets the engine run hot, and overheating can damage it.

What the work covers

We inspect the pump, find the fault, replace the worn or damaged parts, then run the engine to confirm the cooling water flows again. Parts are quoted with the job.

Raw water pump: the pump that draws seawater in. We check the impeller, wear plate, seals and bearings, and do a raw water pump rebuild when they are worn.
Circulation pump: many inboard and sterndrive engines also have an engine-driven pump that moves water or coolant through the block. A leaking seal or a noisy bearing usually calls for circulation pump replacement.
The water path: we check the intake, strainer and hoses, since a blockage can starve a good pump. When an impeller has lost vanes, we look for the pieces, which can lodge in a hose or heat exchanger.

If the pump is sound and the engine still runs hot, we move on to overheating diagnosis and a cooling system flush.

When to call

The temperature gauge reads higher than usual, or the overheat alarm sounds
On an outboard, a telltale stream that is weak or gone
Steam, or less water than normal, at the exhaust
A drip or salt crust around the pump
The engine was run dry, even for a moment

Questions about marine water pump repair

What should I do if the overheat alarm sounds?

Throttle back and, when it is safe, shut the engine down. Once it cools, close the seacock if the boat has one, check the sea strainer and intake for weed or plastic, and open the seacock again before you restart. Never open the coolant cap on a hot engine.

Will you replace the whole pump or only the impeller?

Often a new impeller and gasket are enough. If the housing, wear plate or shaft is scored or worn, we rebuild or replace the pump and quote it before any work is done.

Book a visit: submit a ticket with the boat, the engine make and model, where it is kept and when you first noticed the problem, or call (213) 693-0224.