Yamaha Mechanical Access Port Riser

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  • Regular price $101.99

Add vertical height to the location of your clean out port compartment's mechanical access port. 

Adding this custom "STARBOARD" CNC fabricated riser will raise your boat's mechanical access port 3/4" above the deck. 

Raising the access port up off the deck has the effect of keeping the bilge free from water intrusion that could be leaking from around the gasket or edge of the access port's frame.

Fits: All Yamaha Jet Boats From 2010-Current (verify that your boat's access port dimensions are 8.5" X  15 3/8" before ordering)


Installs using minimum tools and hardware. Allow 30 minutes for complete installation plus silicone cure time.

See install guide for installation instructions.


Customer Reviews

Based on 3 reviews
Steve Malichek

Fits perfectly

timothy bentle
No more bilge pump running

Definitely help stop the water flowing into the engine compartment. Bilge pump used to run all the time but no longer

Peter D
Finally, Someone Made This Available

I have been very frustrated with all the water that accumulates in the bilge after being pumped up through the clean out ports. I used to drain 10 to 15 gallons of water out of my boat after every outing and the bilge pump ran frequently when the engines were on. I made my own version of this a couple years ago. I would have bought one as the required material is expensive and by the time you factor in the time involved, $90 is very fair. Mine is 1" thick which fits my 242 Limited, but may not fit all boats. The thing I found is that the large access cover this screws into is not well sealed to the hull (at least on my boat). So I still had water seeping in the bilge. But once I caulked this cover properly, just about all the water that comes up from the clean out ports drains out through the drain. My bilge is virtually dry now! So bottom line, if you hate water in your bilge, try this. Its relatively inexpensive and easy to install and will improve or even fix the water ingress issue.