Sea-Doo Air Intake Kits That Actually Make Power

A factory Sea-Doo airbox is built for one job: pass EPA noise and intake-noise testing with a sealed lid, a paper element, and enough restriction to keep the boost map conservative. That's a fine spec for a stock craft. It is not the spec you want when you're chasing the ceiling of what the 1503 4-TEC or 1630 ACE can do.

A real **Sea-Doo air intake** upgrade does three things at once: drops measurable inlet restriction across the rev range, holds intake air temps closer to ambient under sustained WOT, and gives the supercharger (on 230/300/325 platforms) a cleaner column of air to compress. That's the engineering case. The buyer case is simpler — louder pull, sharper throttle, more confidence in the top quarter of the powerband.

GT40Marine builds Sea-Doo intakes the way we'd build them for ourselves: billet hardware, real marine filter media, and fitment dialed to the chassis it's going into. Below is the full guide — what's actually different between options, which intake fits which platform, and how to choose without overpaying for badge value.

What a Sea-Doo air intake actually is

The OEM intake on a 1503 4-TEC or 1630 ACE Sea-Doo is a multi-piece assembly: an airbox lid, a flame arrestor or filter element, an inlet snorkel that draws from above the engine, and on supercharged variants, a feed tube into the supercharger inlet. The whole stack is tuned for noise compliance and water-rejection, not airflow optimization.

An aftermarket Sea-Doo air intake replaces some or all of that stack. The three architectures buyers will see in the wild:

**Open / shorty intakes.** A short barrel filter mounted directly to the supercharger inlet or throttle body, with the airbox removed entirely. Maximum airflow gain, maximum induction sound. Trade-off: more sensitive to water ingestion, so quality of the filter media and the cap design matter.

**Sealed-airbox replacements.** A re-engineered airbox with a higher-flow path and a high-flow filter element inside. Quieter, more weather-tolerant, smaller absolute gain than a true open intake.

**Cold-air feed kits.** A ducted feed that pulls air from a cooler zone of the hull — typically near a hull vent — instead of from over the heat-soaked engine. Adds intake-air-temperature consistency under sustained load, which matters more on supercharged 300 / 325 builds than on naturally-aspirated 130s.

GT40Marine's Sea-Doo intake line covers all three architectures. The cold air intake (GT-10001 family) is the flagship — carbon fiber housing, premium media, and a re-routed feed path. The Shorty Power Filter (GT-10006) is the no-compromise open-intake answer for builders who want the most airflow available. The replacement filter element (GT-10003) is the entry point if you want to keep the OEM airbox and just upgrade what's inside it.

Why the OEM intake is the first thing serious builders touch

Three reasons the intake is the highest-ROI mod on the Sea-Doo platform:

**1. The supercharger is hungry.** On the 230, 300, and 325 HP variants of the 1630 ACE — and on the 255/260/265 builds of the 1503 4-TEC — the supercharger needs every cubic foot per minute it can pull. Inlet restriction shows up as parasitic loss across the entire boost curve. A clean intake recovers it.

**2. Heat-soak is real on PWC.** A jet ski engine bay is small, sealed, and surrounded by exhaust. Intake air temperatures climb sharply in the first minutes of WOT. Cooler air is denser air. A properly routed Sea-Doo air intake holds inlet temps closer to ambient and gives the ECU's knock and timing strategies more headroom.

**3. It's the cheapest power upgrade on the platform.** Compared to an intercooler, an open loop cooling conversion, or a titanium exhaust, an intake is the lowest dollar-per-perceived-gain step. That's not marketing — that's just where the OEM left airflow on the table.

Fitment: which Sea-Doo intake fits which engine

This is where most buyers go wrong. Sea-Doo runs two distinct engine architectures, and the intake hardware is not always interchangeable.

Two practical rules:

• **If your model is 2018 or later and it's labeled 230, 300, or 325** — you're on the 1630 ACE. Order the ACE-spec intake.
• **If your model is 2017 or earlier and labeled 215, 255, 260, or 260X** — you're on the 1503 4-TEC. Order the 4-TEC-spec intake. The bearings, the supercharger nose, and the airbox geometry are different generations.

There are crossover years (2016–2017) where both engines were sold in different trims; check the VIN sticker if your model year is in that window.

Real-world expectations: what changes after install

Premium positioning honest: we do not publish manufacturer dyno numbers on this page because the variance across configurations (fuel, weather, supercharger pulley, exhaust state, ECU calibration) is wide enough that a single number would mislead more buyers than it informs.

What we will say:

• Induction noise audibly increases. Owners describe it as a deeper inlet pull at mid-throttle and a clear supercharger whine at WOT.
• Throttle response sharpens, especially in the first 30% of pedal travel.
• Top-speed gains are typically modest on a fully stock craft, larger on a stack already running an intercooler / pulley / tune.
• The intake unlocks the next step in a stage build. Stage 1 packages are normally intake + filter + tune. A clean intake without the supporting ECU calibration leaves gain on the table.

If you want concrete dyno verification for your exact build, work with a calibrator who can pull pre-and-post numbers on the boat in question. That's the only honest number.

Installation: what it takes, what we won't tell you

A Sea-Doo intake swap on the 1630 ACE is typically a 60–90 minute job for an owner with the right hand tools, an organized engine bay, and a service manual. The 1503 4-TEC supercharged variants are similar — slightly tighter clearance to the supercharger snout.

We don't publish step-by-step install instructions on this site. The reason: torque values, hose orientation, and clamp sequencing vary by model year, and a wrong number — especially on the supercharger inlet clamp or the throttle-body coupler — can leak boost, ingest debris, or damage a $4,000+ supercharger.

What we ship with every GT40Marine Sea-Doo air intake:

• All clamps and gaskets sized for the kit.
• Fitment notes for your specific platform.
• Direct support: text or email an engineer at GT40Marine when you have a question on your specific install. Phone support during business hours.

The job is owner-friendly. The torque numbers come from the manual or our team — not from a generic blog.

How GT40Marine intakes compare to the market

Honest comparison. Real differences. No mudslinging.

The competitive landscape on Sea-Doo air intakes is mature — RIVA, 4-Tec Performance, Fizzle, and a handful of smaller shops all build legitimate parts. The honest differentiation for GT40Marine is three things:

**Stack-native engineering.** Our intake is designed to live inside a GT40 build — paired with the GT40Marine Open Loop Cooling Kit, the catch can breather, and the titanium exhaust if you go that far. The parts are tuned to work together, not against each other.

**Direct manufacturer relationship.** When you call, you reach a person who knows the part on your boat. No dealer-channel telephone game.

**Premium materials at a sane price.** Carbon fiber, billet, and marine-grade hardware at the $149–$359 range — not the $449+ premium-badge tax.

Sea-Doo air intake selection: which one for which buyer

If you're buying your first performance part for a 230 HP RXP-X, GTI SE 230, or Wake Pro 230 — start with the [GT40Marine Cold Air Intake](/products/sea-doo-cold-air-intake). It's the single best ROI step on the platform.

If you're chasing top-end on a 300 or 325 platform and the rest of the stack is dialed (intercooler, OLC, tune) — step up to the [Shorty Power Filter](/products/sea-doo-230-shorty-intake). Open architecture, maximum airflow, designed for builders who've already moved past basic Stage 1.

If you're on a budget and want a meaningful first step — drop the OEM filter element and put in the GT40Marine high-flow replacement filter. Smaller absolute gain, no other parts to buy, and you keep the factory airbox if you ever sell the craft.

If you're a calibrator or shop building a Stage 2+ package — pair the intake with the [GT40Marine catch can breather](/products/sea-doo-catch-can-breather). On supercharged 4-TEC and ACE motors, a quality breather catch can is what separates a clean Stage 2 from one that puddles oil in the intake tract.

How a Sea-Doo air intake fits into a full GT40 stage build

An intake on its own is a 3–7% bump on a stock craft. An intake inside a thought-through stage build is the multiplier on every other dollar you spend.

**Stage 1 (intake + tune territory).** Intake, high-flow filter, and an ECU calibration tuned for the new airflow. The single most cost-effective package on the platform.

**Stage 2 (cooling-supported boost).** Stage 1 plus an [open loop cooling kit](/learn/sea-doo-open-loop-cooling) and a [ribbon delete](/learn/sea-doo-ribbon-delete-kit). Cooling and air-management become the limiter when boost climbs.

**Stage 3 (top-end build).** Stage 2 plus a [titanium exhaust](/learn/sea-doo-titanium-exhaust), an intercooler upgrade, a supercharger pulley change, and a final tune on a calibrated craft. The intake stays — at this stage it's mandatory hardware, not optional.

The intake is one component. The advantage of buying it inside the GT40 stack is that the other components are engineered alongside it.

Frequently asked questions

Ready to move

Pick the intake that matches your build stage. If you're not sure which fits, call us — we'll walk through your craft and your goals before you buy anything.