Air Intake Filter for Sea-Doo 325 RXP-X RXT-X GTX (2024-2026)

High-Flow Air Intake Filter for 2024-2026 Sea-Doo RXP-X, RXT-X, GTX

This GT40 Marine compact cold-air intake filter replaces the restrictive factory airbox setup to significantly lower intake air temperatures and increase supercharger efficiency on 325-horsepower Rotax engines.

The Stock Sea-Doo 325 Airbox Restriction

The factory intake system on the Rotax 1630 ACE - 325 engine prioritizes noise reduction and cost-efficiency over optimal volumetric efficiency. In marine environments, the tightly packaged OEM compact airbox is susceptible to severe heat soak, especially during extended high-rpm operation. The factory paper filter media and heavily baffled plastic routing create a turbulent pressure drop in front of the supercharger, effectively starving the compressor of cold, dense air and limiting the top-end thrust response.

The Engineering Solution

This GT40 Marine intake filter upgrade eliminates the bottleneck of the standard 325 compact airbox by utilizing high-flow, low-restriction filtration media. By drawing cooler, denser air directly into the supercharger, the system improves compressor efficiency and throttle response. The filter element provides superior particulate trapping without sacrificing airflow volume, ensuring the Rotax engine operates safely at high boost levels. For maximum performance and appropriate air/fuel ratios, a Stage 1 ECU flash and 91-octane fuel are strongly recommended. Note: Secondary-battery harness routing can impede airbox airflow; verifying harness clearance is required prior to installation.

Technical Specifications

Compatibility

• 2024-2026 Sea-Doo RXP-X 325
• 2024-2026 Sea-Doo RXT-X 325
• 2025-2026 Sea-Doo GTX Limited 325

The Sea-Doo Performance Caliber

Engineered to withstand the harsh vibrations and moisture of a marine environment, this intake ensures your PWC maintains consistent, fade-free power across open water while delivering a pronounced supercharger spool up sound.

Common Questions

Which Sea-Doo 325 models does this air intake filter fit?
It fits the 2024-2026 Sea-Doo RXP-X 325, 2024-2026 Sea-Doo RXT-X 325, and 2025-2026 Sea-Doo GTX Limited 325 equipped with the Rotax 1630 ACE - 325 engine on ST3 and T3-R hulls.

How does this filter improve upon the stock Sea-Doo 325 airbox?
It replaces the restrictive, baffled factory compact airbox setup with high-flow, low-restriction filtration media to reduce heat soak, lower intake air temperatures, and feed cooler, denser air to the supercharger.

Is a tune or specific fuel octane recommended with this intake?
For maximum performance and proper air/fuel ratios, a Stage 1 ECU flash and 91-octane fuel are strongly recommended.

What should I check before installing the filter?
Verify secondary-battery harness routing and clearance prior to installation, as the harness routing can impede airbox airflow if not properly positioned.

Will this intake change the sound of my watercraft?
Yes, replacing the heavily baffled OEM airbox delivers a more pronounced supercharger spool-up sound along with crisper throttle response.