M-JET 4-inch Intake System for Sea-Doo 1503 & 1603 Engines

M-JET 4-inch intake system for Sea-Doo 1503 & 1630 engines

More air. Better throttle response. Sporty sound.

The M-JET 4-inch intake system was developed for Sea-Doo models with Rotax 1503 4-TEC and Rotax 1630 ACE engines. Thanks to the larger 4-inch intake tract and the high-quality K&N air filter, the engine gets significantly freer air access than with the stock intake.

The result is a more direct throttle response, a sportier intake sound, and better air supply — especially for supercharged engines that rely on sufficient air at high loads. The engine can breathe more freely, responds more spontaneously to throttle commands, and feels livelier overall.

The system is ideal for riders who want to get more performance, more sound, and a cleanly manufactured upgrade out of their Sea-Doo.

Advantages

• 3" intake system for improved airflow
• High-quality marine air filter
• Freer intake tract compared to the stock solution
• More direct throttle response
• Sporty intake sound
• Ideal for naturally aspirated and supercharged engines
• Clean look with M-JET branding
• Robust design for use in watersports
• Plug-&-play-oriented performance upgrade, depending on model and setup

Suitable for Sea-Doo models with Rotax 1503 / 1500 4-TEC engine

Typical models with 1503 / 1500 4-TEC engine platform:

• Sea-Doo GTI 130
• Sea-Doo GTI 155
• Sea-Doo GTI SE 130
• Sea-Doo GTI SE 155
• Sea-Doo GTS 130
• Sea-Doo GTS 155
• Sea-Doo GTX 155
• Sea-Doo GTX S 155
• Sea-Doo GTX Limited 215
• Sea-Doo GTX Limited 260
• Sea-Doo RXP 155
• Sea-Doo RXP 215
• Sea-Doo RXP-X 255
• Sea-Doo RXP-X 260
• Sea-Doo RXT 215
• Sea-Doo RXT 260
• Sea-Doo RXT-X 255
• Sea-Doo RXT-X 260
• Sea-Doo GTR 215
• Sea-Doo WAKE 155
• Sea-Doo WAKE PRO 215
• Sea-Doo Fish Pro 155
• further Sea-Doo 4-TEC models with 1494 cm³ / 1503 engine

Suitable for Sea-Doo models with Rotax 1630 ACE engine

Typical models with 1630 ACE engine platform:

• Sea-Doo GTI 130
• Sea-Doo GTI 170
• Sea-Doo GTI SE 130
• Sea-Doo GTI SE 170
• Sea-Doo GTX 170
• Sea-Doo GTX 230
• Sea-Doo GTX 300
• Sea-Doo GTX Limited 230
• Sea-Doo GTX Limited 300
• Sea-Doo GTX Limited 325
• Sea-Doo GTX PRO 130
• Sea-Doo GTR 230
• Sea-Doo GTR-X 230
• Sea-Doo GTR-X 300
• Sea-Doo RXP-X 300
• Sea-Doo RXP-X 325
• Sea-Doo RXT-X 300
• Sea-Doo RXT-X 325
• Sea-Doo WAKE 170
• Sea-Doo WAKE PRO 230
• Sea-Doo FishPro Scout 130
• Sea-Doo FishPro Sport 170
• Sea-Doo FishPro Trophy 170
• Sea-Doo Explorer Pro 170
• further Sea-Doo models with Rotax 1630 ACE engine

Why a 4-inch intake system?

The stock intake is designed for noise reduction, standard comfort, and universal use. The M-JET 4-inch intake system, on the other hand, focuses on freer airflow and a more direct connection to the engine.

Due to the larger diameter and the open marine filter, the engine can draw in air more easily. This improves throttle response and provides a sportier driving experience. Especially when accelerating, exiting turns, and at full throttle, the freer intake is noticeable.

The sound also becomes significantly more present: more powerful, sportier, and fitting for the performance character of your Sea-Doo.

The version with crankcase ventilation is always supplied. If your vehicle does not have crankcase ventilation, you can simply close the connection.