Sea-Doo 300hp Replacement Supercharger

Genuine Sea-Doo 300HP Supercharger – Brand New in Box | Fits GTX LTD, RXP, RXT X (2016–2025)

Upgrade or replace your Sea-Doo supercharger with this brand-new, genuine Sea-Doo 300HP supercharger (Part #420893588) — the latest OEM version designed to fit all Sea-Doo 300 horsepower models from 2016 to 2024, including:

• GTX LTD 300

• RXP-X 300

• RXT-X 300

This is the most current version and directly replaces older supercharger part numbers:

• 420894110

• 420893562

• 420893566

• 420893564

• 420893567

• 420490670

✅ Latest OEM Part Number: 420893588

✅ Maintenance-Free Design

✅ 100% Genuine BRP / Sea-Doo Part

✅ Fits All 300HP Sea-Doo Models (2016–2024)

This maintenance-free supercharger is built to deliver high performance without the need for regular servicing or rebuild kits. As such, individual internal components are not stocked, but can be specially sourced upon request.

## Understanding the 300HP Sea-Doo Supercharger: Maintenance, Rebuild Options & Common Failures

On pre-2022 machines, we have seen multiple cases of **supercharger turbine wheel failure**.

When failure occurs, it often results in:

* Catastrophic casing damage

* Housing distortion

* Complete assembly write-off

At present, we do not offer a viable repair solution for severely damaged housings — these units are disposed of.

Why Do the Wheels Fail?

While not officially confirmed by the factory, contributing factors may include:

**1. Corrosion from Poor Winterisation**

Improper storage procedures can leave moisture in the air intake system. Over time, this may cause corrosion on the cast aluminium impeller wheel. Many failed units show visible pitting or sections missing from the fins.

**2. High RPM Mapping**

Performance tunes and high-RPM maps increase centrifugal forces acting on the impeller. Greater rotational speeds increase stress at the blade tips, which may contribute to a higher rate of wheel failure.

**3. Blade Fragmentation**

If part of a fin breaks away at high RPM, the imbalance can cause the wheel to:

* Violently stop

* Contact the compressor housing

* Deform or shatter further

Once this occurs, secondary damage is almost always severe.

## Why Inspection Matters

At high RPM, the supercharger impeller experiences extreme centrifugal loading. Even small imperfections, corrosion pits, or imbalance can multiply stress forces significantly.

This is why we strongly recommend:

* Careful winterisation

* Avoiding excessive RPM tunes without supporting modifications

* Reducing inspection intervals if running a rebuilt unit

Preventative maintenance is significantly less expensive than replacing a failed assembly.

* 300HP Sea-Doo superchargers are classified as non-serviceable by the manufacturer

* At 200 hours, units must be replaced if out of spec

* New superchargers available for same-day shipping

* Genuine Rotax & WSM rebuild kits in stock

* We recommend 100-hour inspection intervals for rebuilt units

* Pre-2022 turbine wheel failures can cause catastrophic damage

If you are unsure about your supercharger condition or service interval, contact us for advice before failure occurs.