Marine Products International Wet Exhaust Hose

Marine Products International Wet Exhaust Hose: OEM-Grade Performance for Serious Boaters

When it comes to keeping a marine engine's exhaust system safe, reliable, and compliant, the hose connecting the mixing elbow to the waterlock and transom outlet does far more work than most boaters realize. Wet exhaust hose carries a demanding mixture of hot exhaust gases and injected cooling water, and it must do so without collapsing, kinking, or degrading — run after run, season after season. Marine Products International (MPI) has built its reputation on engineering hose that is precisely equal to that challenge.

The MPI Advantage: Built for Boat Builders, Available to You

MPI's premium marine wet exhaust hose is the #1 choice of recreational boat builders in North America. That OEM pedigree matters enormously to the aftermarket buyer: when a product is spec'd by the people building boats from the ground up, it reflects a level of trust earned through consistent, verifiable performance. Boat builders and boat manufacturers around the world rely on MPI's globally approved and certified marine hose, backed by independent product testing.

MPI — Marine Products International — specializes in rubber and plastic marine hose for the recreational boating industry. Their wet exhaust lineup distills that deep specialization into two well-defined product series, each engineered for a specific range of installation scenarios.

Series 200: Certified Softwall Wet Exhaust Hose

The Series 200 is MPI's flagship softwall wet exhaust hose, type certified for wet exhaust service. Its construction is purpose-built to withstand the unique stresses of a marine exhaust environment:

• Heavy wall construction with multiple plies of nylon spiral cord prevents shock, wall collapse, panting, and vibration.
• Resists engine exhaust, high temperatures, and ozone.
• Formulated to withstand operating temperatures of 220°F continuous.
• Meets SAE J2006 standard.
• Recommended for short, straight connections.
• Color coded with a blue stripe for easy identification.

Series 250: Certified Hardwall Wet Exhaust Hose

For longer or more complex exhaust routing, MPI offers the Series 250 hardwall wet exhaust hose. It shares the same core performance characteristics as the Series 200 but adds critical structural reinforcement: wire reinforcement provides additional strength for longer connections with excellent flexibility, and the Series 250 is recommended for runs longer than four times the inside diameter of the hose. Like its softwall sibling, it is color coded and meets SAE J2006 standard.

Why SAE J2006 Compliance Matters

SAE J2006 is the marine industry's benchmark for wet exhaust hose performance, covering heat resistance, pressure ratings, and construction integrity. MPI's marine wet exhaust hose meets or exceeds all industry standards of recreational boat manufacturers and marine distributors in the USA. For a boater replacing aging hose or completing a new build, choosing a J2006-compliant product is the single most important factor in ensuring long-term safety and system integrity.

Choosing Between Softwall and Hardwall

Selecting the right MPI series comes down to the geometry of your exhaust run. The Series 200 softwall excels in shorter, straighter applications where minimal bend radius is needed. The Series 250 hardwall, with its embedded wire helix, is the correct choice when the routing is longer or requires the hose to maintain its shape through gradual curves without an external support structure. Both are available in multiple inside diameters to match common inboard and sterndrive engine configurations.

Explore the full Marine Products International brand catalog for their complete range of certified marine hose, or browse all available wet exhaust hose options to compare types, sizes, and configurations for your vessel.