Which Mercury engines are eligible for the Boost software upgrade?

Eligibility depends on serial number, not model year. FourStroke 175-300hp, Pro XS 175-300hp, Verado 250-350hp, and Racing 150R models with serial numbers from 2B529482 onward are eligible for the dealer-installed upgrade. The 350hp Verado has a specific serial range (3B266064 to 3B578266).

How much does Mercury Boost cost to install?

Mercury has not published a standard retail price for the Boost upgrade. Dealers set their own service rates. Expect to pay a labor charge, likely in the 1-2 hour range, since the software itself is the product. Call your dealer for current pricing.

Does Mercury Boost void my warranty?

No. Boost is an official Mercury program and a factory-backed software calibration. It does not void your Mercury factory warranty or any Mercury Protection Plan coverage.

How do I find my Mercury serial number?

Check the transom bracket (port side), the engine block, or under the cowling. The serial number is on a metal plate or sticker. Take a photo and store it on your phone for easy reference.

How much does Mercury Boost cost to install in Canada?

Mercury has not published a standard retail price for the Boost calibration. Dealers set their own labour rates, and the installation is billed as in-shop labour, typically in the 1-2 hour range. At most Mercury dealers in Ontario, shop rates run $120-$175 per hour, so expect to pay roughly $150-$350 CAD for the Boost installation labour, not including any other in-shop work done at the same visit. Since there's no hardware involved, the cost is primarily technician time. If you're already bringing the engine in for spring commissioning or other in-shop service, ask to have Boost done at the same time to minimize total labour cost.

How do I find my Mercury outboard serial number?

Your Mercury serial number is most commonly found on the transom bracket, look on the port (left) side of the mounting bracket for a metal data plate. On some models it's stamped directly into the engine block, or printed on a label inside the cowling. The serial number is typically a combination of letters and numbers. Take a photo of the plate and save it in your phone, you'll want it available anytime you call a dealer or need warranty service. The serial number is the only definitive way to confirm Boost eligibility, since eligibility isn't determined by model year alone.

Which FourStroke models are eligible for Mercury Boost?

Based on Mercury's 2026 rollout information, the factory-installed Boost calibration is confirmed on Pro XS (175-300hp) and Verado models (250, 300, 350hp) built in Q2 2026 and later. The dealer-installed retrofit upgrade for existing outboards is currently confirmed on the 350hp Verado within a specific serial range. Mercury has indicated Boost is the starting point for a broader set of software upgrades, additional eligible models may be announced as the program expands. If you own a FourStroke and want to know if your specific engine qualifies, the fastest answer is to call a certified dealer with your serial number.

Is Mercury Boost worth it for Rice Lake and Kawartha Lakes boating?

For most Rice Lake and Kawartha Lakes boaters, the answer depends on how you load your boat. The improvement is most noticeable on heavily loaded boats, pontoons with a full deck, family runabouts with gear and passengers, or any setup where hole-shot and mid-range punch feel sluggish. Rice Lake's shallow flats mean you're often transitioning from idle to cruising speed in confined areas, and that's exactly where the Boost calibration makes a difference. If your eligible engine already feels responsive with a light load, the improvement will be subtler. But if you routinely run heavy or feel like your engine is slow to get on plane, Boost is one of the most cost-effective upgrades available, it costs a fraction of a new motor and requires no hardware.

What should I do if my serial number isn't eligible for Mercury Boost?

If your Mercury engine falls outside the current Boost eligibility criteria, the upgrade simply isn't available for your unit at this time, there's no workaround or aftermarket equivalent. Mercury has said Boost is part of a broader software upgrade lineup, and additional models may become eligible as the program expands. In the meantime, the best performance improvements available to ineligible engines are mechanical: a properly spec'd propeller, a clean lower unit with fresh gear lube, fresh spark plugs, and a correctly calibrated ignition timing through a standard service. These won't match the Boost gain, but a poorly maintained engine with a wrong prop can lose more performance than Boost recovers.

Can Mercury Boost be reversed if I don't like the result?

In theory, yes. Boost is a software calibration and Mercury dealers have the tools to apply and modify software-based updates. However, Mercury has not published a standard reversal procedure, and returning to the factory calibration would require a return visit to a certified dealer. In practice, the 5-21% mid-range acceleration improvement is almost universally regarded as positive, the calibration doesn't change how the engine feels at cruise or at wide-open throttle, only in the mid-range RPM band. If you're considering Boost, it's not a risky experiment, it's a factory-approved update with a straightforward performance outcome.

Is Your Mercury Outboard Eligible for the 2026 Boost Software Upgrade?

_Last updated: May 27, 2026_ ### Quick Answer Mercury Boost is a software-based engine calibration update, not a hardware kit, that improves mid-range acceleration by 5, 21% on eligible motors. Eligibility is determined by serial number, not model year. The dealer-installed...

Mercury Platinum Dealer·Family-owned since 1947·Mercury dealer since 1965·Gores Landing, ON·Quote builder available

Last updated: May 27, 2026

Quick Answer

Mercury Boost is a software-based engine calibration update, not a hardware kit, that improves mid-range acceleration by 5, 21% on eligible motors. Eligibility is determined by serial number, not model year. The dealer-installed version covers FourStroke 175, 300 HP, Pro XS 175, 300 HP, and Verado 250, 350 HP from specific serial numbers (see table below). The factory-installed version comes pre-loaded on new Pro XS and Verado models built in Q2 2026 and later. Boost does not void Mercury's warranty.

Check yours: Run the Boost Eligibility Checker to see if your motor qualifies in 30 seconds. Free.

Full Article

Mercury announced Boost as part of its 2026 technology rollout and described it as the starting point for a broader set of software-based performance upgrades. It does one thing: recalibrates how the engine delivers power through the mid-range RPM band, producing faster acceleration from idle to wide-open throttle without touching internal components.

The result is a 5, 21% improvement in mid-range acceleration and zero-to-top-speed performance. The range is real, the specific gain depends on hull shape, load, prop selection, and the current factory calibration. Even 5% is noticeable on a loaded boat.

What Boost Changes (and What It Doesn't)

What Boost changes:

Mid-range throttle response
Zero-to-top-speed run times
Overall throttle feel, the engine feels more responsive

What Boost does not change:

Rated horsepower
Fuel consumption
Physical components
Mercury factory warranty coverage

Boost is a factory-backed, manufacturer-approved calibration. It does not void Mercury warranty coverage or Mercury Protection Plan coverage.

Which Engines Are Eligible?

Eligibility is by serial number, not model year.

Dealer-Installed Retrofit (Existing Motors)

Engine Family	HP Models	Eligible From Serial Number
FourStroke	175, 200, 250, 300 HP	2B529482
Pro XS	175, 200, 225, 250, 300 HP	2B529482
Verado	250, 300 HP	2B529482
Verado	350 HP	3B266064 to 3B578266 only
Racing 150R	150R	3B547096

Important note on the 350 HP Verado: Eligibility is within a specific serial range (3B266064 to 3B578266). If your 350 falls outside this range, it is not eligible for the dealer-installed version.

Factory-Installed (New 2026 Production Motors)

Boost comes pre-loaded on:

Pro XS 175, 300 HP
Verado 250, 300, 350 HP
Racing 150R

Applies to models manufactured in Q2 2026 and later.

How to Find Your Mercury Serial Number

The serial number is the only way to confirm eligibility.

Transom bracket, most common. Port (left) side of the mounting bracket. Metal data plate.
Engine block, stamped directly on some models.
Under the cowling, printed on a label on newer outboards.

Practical tip: take a clear photo of the plate and save it on your phone. You will want it any time you call a dealer or need warranty service.

You can build a live CAD quote for your repower online at Mercury Repower Centre.

How to Get Boost Installed

Boost is dealer-installed. You cannot download or apply it yourself, Mercury's diagnostic software is dealer-exclusive.

The process:

Bring the engine to HBW (or schedule a service call)
HBW confirms serial number eligibility
Boost calibration is applied via Mercury's software interface
A short test run confirms the update

Most dealers can complete it in a single service visit. Mercury has not published a standard retail price for the Boost upgrade. Dealers set their own service rates. At most Mercury dealers in Ontario, shop rates run in the $120, $175 per hour range, and installation is primarily technician time, roughly 1, 2 hours. If you are already bringing the engine in for spring commissioning or annual service, ask to have Boost done at the same visit to minimize total labor cost.

Why This Matters for Ontario Boating

Mid-range acceleration is where the engine is most felt in real use. Not at full throttle, but in the transition from idle to cruising speed, when you are launching off Rice Lake's shallow flats, loading a pontoon with six passengers, or accelerating through a turn.

A 5, 21% improvement in that band is most noticeable on:

Heavily loaded pontoons
Family runabouts with full gear and passengers
Any setup where hole-shot or mid-range feel sluggish

Ontario's boating season is short. If your eligible motor qualifies for Boost, getting it done before spring launch is worth a conversation with us.

For engine repairs, we only service Mercury and Mercruiser.

What we see at HBW

Boost is Mercury's software-only HP upgrade for select FourStroke and Pro XS models -- adds 10-25 HP via a flash, no hardware change. The most common customer who comes in asking is a 150 FourStroke owner on a pontoon who wishes they had specced the 175.

Eligibility depends on year, model code, and powerhead serial number. We can check eligibility in our portal in a few minutes. Flash time at the shop is roughly 90 minutes plus the customer-portal activation. Not every motor is a candidate -- carbureted and pre-2018 EFI are typically out.

Related guides

Mercury Boost Cost in Canada: Honest Ontario Dealer Breakdown (2026): What Mercury Boost actually costs in Canada (hint: not $2,000). Honest Ontario dealer breakdown of the Feb.
Is Your Pontoon Eligible for Mercury Command Thrust? (2026): Find out if your pontoon needs Mercury Command Thrust. Hull weight, transom height, tube count, prop.
Is Your Mercury Outboard Eligible for DTS (Digital Throttle & Shift) Retrofit? (2026): Find out if your Mercury outboard supports DTS (Digital Throttle & Shift) retrofit. Covers Verado, Pro XS.
Is Your Mercury Outboard Eligible for SmartCraft Connect? (2026): Find out if your Mercury outboard works with SmartCraft Connect. Covers FourStroke, Pro XS, Verado, SeaPro.

FAQs

Does Boost void my warranty? No. Boost is an official Mercury program and factory-backed calibration. It does not void Mercury factory warranty or any Mercury Protection Plan coverage.

Does Boost work on twin-engine setups? Yes, if both engines are eligible. Each engine is updated individually. If your twins have different serial numbers, eligibility is assessed per engine.

What if my serial number isn't eligible? If your motor falls outside current eligibility criteria, the upgrade is not available at this time, there is no aftermarket equivalent. Mercury has indicated Boost will expand to additional models. In the meantime, the best performance improvements for ineligible engines are mechanical: correct prop specification, fresh spark plugs, clean lower unit with fresh gear lube, and a properly maintained ignition system.

Can Boost be reversed? In theory, yes, it is a software calibration and Mercury has the tools to modify software-based updates. Mercury has not published a standard reversal procedure. In practice, the improvement is consistently viewed as positive, it changes only the mid-range band, not cruise or wide-open-throttle behavior.

How do I know if my FourStroke qualifies? FourStroke models in the 175, 300 HP range from serial number 2B529482 are eligible for the dealer-installed retrofit. For factory-installed Boost on new motors, it applies to Pro XS and Verado models built in Q2 2026 and later. The fastest answer: call HBW at 905-342-2153 with your serial number.

Is Boost worth it on Rice Lake? If your eligible engine already feels responsive with a light load, the improvement will be subtler. If you routinely run heavy, full pontoon, loaded family bowrider, anything where the hole-shot feels sluggish, Boost is one of the most cost-effective upgrades available. It costs a fraction of a new motor and requires no hardware.

Internal Links

Mercury SmartCraft Connect Guide Ontario
Mercury Controls & Rigging Guide Ontario
Mercury 115 vs 150 Comparison
Mercury Outboard Motor Families Guide

CTA

Check if your Mercury qualifies for Boost. Call 905-342-2153 with your serial number, or email info@harrisboatworks.ca. HBW confirms eligibility, quotes the installation, and books the visit. Harris Boat Works, 5369 Harris Boat Works Rd, Gores Landing, ON K0K 2E0. Mercury Platinum dealer. Est. 1947.

Ready to price it out? Build a live CAD quote for your repower online at the Mercury Repower Centre.

Related guides:

Frequently Asked Questions

Which Mercury engines are eligible for the Boost software upgrade?: Eligibility depends on serial number, not model year. FourStroke 175-300hp, Pro XS 175-300hp, Verado 250-350hp, and Racing 150R models with serial numbers from 2B529482 onward are eligible for the dealer-installed upgrade. The 350hp Verado has a specific serial range (3B266064 to 3B578266).
How much does Mercury Boost cost to install?: Mercury has not published a standard retail price for the Boost upgrade. Dealers set their own service rates. Expect to pay a labor charge, likely in the 1-2 hour range, since the software itself is the product. Call your dealer for current pricing.
Does Mercury Boost void my warranty?: No. Boost is an official Mercury program and a factory-backed software calibration. It does not void your Mercury factory warranty or any Mercury Protection Plan coverage.
Does Boost work on twin-engine setups?: Yes, if both engines are eligible, both can be updated. Each engine is updated individually. If your twins have different serial numbers, eligibility is assessed per engine.
How do I find my Mercury serial number?: Check the transom bracket (port side), the engine block, or under the cowling. The serial number is on a metal plate or sticker. Take a photo and store it on your phone for easy reference.
How much does Mercury Boost cost to install in Canada?: Mercury has not published a standard retail price for the Boost calibration. Dealers set their own labour rates, and the installation is billed as in-shop labour, typically in the 1-2 hour range. At most Mercury dealers in Ontario, shop rates run $120-$175 per hour, so expect to pay roughly $150-$350 CAD for the Boost installation labour, not including any other in-shop work done at the same visit. Since there's no hardware involved, the cost is primarily technician time. If you're already bringing the engine in for spring commissioning or other in-shop service, ask to have Boost done at the same time to minimize total labour cost.
How do I find my Mercury outboard serial number?: Your Mercury serial number is most commonly found on the transom bracket, look on the port (left) side of the mounting bracket for a metal data plate. On some models it's stamped directly into the engine block, or printed on a label inside the cowling. The serial number is typically a combination of letters and numbers. Take a photo of the plate and save it in your phone, you'll want it available anytime you call a dealer or need warranty service. The serial number is the only definitive way to confirm Boost eligibility, since eligibility isn't determined by model year alone.
Which FourStroke models are eligible for Mercury Boost?: Based on Mercury's 2026 rollout information, the factory-installed Boost calibration is confirmed on Pro XS (175-300hp) and Verado models (250, 300, 350hp) built in Q2 2026 and later. The dealer-installed retrofit upgrade for existing outboards is currently confirmed on the 350hp Verado within a specific serial range. Mercury has indicated Boost is the starting point for a broader set of software upgrades, additional eligible models may be announced as the program expands. If you own a FourStroke and want to know if your specific engine qualifies, the fastest answer is to call a certified dealer with your serial number.
Is Mercury Boost worth it for Rice Lake and Kawartha Lakes boating?: For most Rice Lake and Kawartha Lakes boaters, the answer depends on how you load your boat. The improvement is most noticeable on heavily loaded boats, pontoons with a full deck, family runabouts with gear and passengers, or any setup where hole-shot and mid-range punch feel sluggish. Rice Lake's shallow flats mean you're often transitioning from idle to cruising speed in confined areas, and that's exactly where the Boost calibration makes a difference. If your eligible engine already feels responsive with a light load, the improvement will be subtler. But if you routinely run heavy or feel like your engine is slow to get on plane, Boost is one of the most cost-effective upgrades available, it costs a fraction of a new motor and requires no hardware.
What should I do if my serial number isn't eligible for Mercury Boost?: If your Mercury engine falls outside the current Boost eligibility criteria, the upgrade simply isn't available for your unit at this time, there's no workaround or aftermarket equivalent. Mercury has said Boost is part of a broader software upgrade lineup, and additional models may become eligible as the program expands. In the meantime, the best performance improvements available to ineligible engines are mechanical: a properly spec'd propeller, a clean lower unit with fresh gear lube, fresh spark plugs, and a correctly calibrated ignition timing through a standard service. These won't match the Boost gain, but a poorly maintained engine with a wrong prop can lose more performance than Boost recovers.
Can Mercury Boost be reversed if I don't like the result?: In theory, yes. Boost is a software calibration and Mercury dealers have the tools to apply and modify software-based updates. However, Mercury has not published a standard reversal procedure, and returning to the factory calibration would require a return visit to a certified dealer. In practice, the 5-21% mid-range acceleration improvement is almost universally regarded as positive, the calibration doesn't change how the engine feels at cruise or at wide-open throttle, only in the mid-range RPM band. If you're considering Boost, it's not a risky experiment, it's a factory-approved update with a straightforward performance outcome.

Harris Boat Works · 5369 Harris Boat Works Rd, Gores Landing, ON · (905) 342-2153

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