What is a powerhead swap and why is it needed?

The powerhead is the outboard's engine itself: block, crankshaft, pistons and heads. When it is damaged beyond a sensible repair, for example a scored cylinder, a spun bearing or very low compression, we replace it with a remanufactured powerhead and move your fuel system, electrics and other parts across, keeping your midsection, lower unit and controls. We always find out why the old one failed first.

How long does a powerhead replacement take?

The swap itself is typically 10 to 15 hours of labor, about one to two working days, once the remanufactured powerhead has arrived. Shipping time depends on the supplier, and we confirm it with your quote. We then run the break-in procedure and test the engine under load.

Are remanufactured powerheads as reliable as new ones?

A good remanufactured powerhead is rebuilt with new pistons and bearings and fresh machining and is tested before it ships, so it should run like new. Quality varies by supplier, so we use established remanufacturers. The powerhead carries the remanufacturer's own warranty, which we give you in writing, and our installation work is warranted for 90 days from the invoice date.

Can a powerhead swap improve fuel efficiency?

It can, compared with a worn or damaged engine: fresh compression and correctly working parts help the engine burn fuel efficiently and run smoothly. The real gain depends on how worn the old engine was.

Do you also install gaskets and seals during a powerhead swap?

Yes. We fit new gaskets and seals wherever parts are transferred to the new powerhead, starting with the base gasket, and any worn components we find are quoted in writing before we replace them.

Can you service both inboard and outboard engines with a powerhead swap?

A powerhead swap is an outboard job. For an inboard or sterndrive engine the equivalent is a remanufactured long block or a full engine replacement, which we quote separately after an inspection.

Is post-installation testing included with a powerhead swap?

Yes, after installation we perform full engine testing, including compression, idle, and load tests, to verify performance and ensure your engine runs smoothly on the water.

Breeze Marine technician using a shop crane to lower a shiny

Breeze Marine technician using a shop crane to lower a shiny (2)

Powerhead Swap & Remanufactured Installation

A blown engine doesn't mean the end of your boat. We perform "heart transplants" for outboards, swapping your damaged block for a remanufactured powerhead from an established supplier, with its maker's warranty, often for far less than buying new.

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$150 /hr

Labor estimate Quoted after inspection

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

The Heart Transplant

New Life for
Your Outboard.

A blown outboard engine doesn't always mean buying a new motor. We swap your damaged block for a remanufactured powerhead, keeping your existing controls and lower unit, which often costs far less than a repower.

Reman vs. New

A full outboard repower is expensive, and new outboards can be on backorder. A Remanufactured Powerhead is a rebuilt core (new pistons, bearings, and fresh machining) that should run like new for a fraction of the cost.

Maker's Warranty

We source remanufactured powerheads from established suppliers. Each powerhead comes with its maker's warranty; terms vary by supplier, and we show them in your estimate. Our installation work is warranted for 90 days from the invoice date.

Expert "Dressing"

The block is remanufactured, but the skill is in the transfer. We meticulously clean and transfer your fuel injection, alternator, and starter systems, replacing any gaskets or sensors that caused the original failure.

The Swap Process.

Precision extraction and installation.

Diagnostics

We first determine why the old engine blew (e.g., lean fuel injector, broken oil pump) to ensure we don't ruin the new one.

Extraction

We hoist the damaged powerhead off the mid-section. Reusable external parts are removed: the VST and intake are cleaned, and the ECU and wiring are inspected and wiped clean.

Installation

The remanufactured block is mounted with a new base gasket. We "dress" the engine, installing the cleaned components with new seals.

Break-In

Crucial step. We perform the initial outboard break-in following the maker's procedure, such as extra oil for some 2-strokes or a variable RPM run-in, to seat the piston rings correctly.

Back on the Water.

Often a fraction of the cost of a repower.

Hoisting a powerhead off an outboard motor

Remanufactured outboard engine block ready for installation

Dressing a new powerhead with components and wiring

We Service Majors.

Specialized tooling for top brands.

Yamaha 4-Stroke & HPDI

Mercury Verado & Optimax

Suzuki DF Series 4-Stroke

Common Questions

What actually comes with a "Powerhead"?

It is the engine block, crankshaft, pistons, and heads assembled. It does not include the fuel system, electronics, starter, or cowling. We transfer those from your old motor.

How long does it take?

Delivery of a reman block depends on the supplier and model. The outboard powerhead swap itself typically takes 10-15 hours of labor once the powerhead has arrived, and we confirm the timing with your quote.

Don't Junk It. Swap It.

Get a quote for an outboard powerhead replacement.

Quote Engine Swap

Is a Remanufactured Outboard Powerhead Right for You?

A remanufactured outboard powerhead is a rebuilt core with new pistons and bearings and fresh machining. It replaces the engine block, crankshaft, pistons and heads, while your existing fuel system, electronics, starter and cowling are cleaned and transferred over, and your controls and lower unit stay on the boat. That is what lets you keep the parts of your outboard that still work.

The first step in this outboard engine repair is finding out why the old engine failed, such as a lean fuel injector or a broken oil pump, so the same problem does not damage the new block. When you contact us, share your outboard's make, model and hours, any outboard compression test results you already have, and describe what happened when it failed. We work on Yamaha, Mercury and Suzuki outboards and source powerheads from established remanufacturers.

Powerhead Swap or Full Repower?

A powerhead swap makes the most sense when the midsection, lower unit, controls and rigging are still in good shape, because those parts stay on the boat. A full outboard repower is usually the better choice when the lower unit, bracket or electronics are also worn out, or when parts for an older model are hard to find.

A low or uneven outboard compression test points to internal damage, but it does not explain the cause, which is why diagnosis always comes before a new block goes on.