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Selecting Boat Trim Cylinders

Most original Mercruiser trim cylinders have a casting number in the side of the main black tube. That casting number can also tell you exactly which trim cylinder you'll need to order to replace your old or damaged cylinder.

If your trim cylinders are badly corroded, damaged or missing, don't worry. We'll explain in a moment how to order the correct ones, even if you don't know the casting number.

If you know what your casting number starts with, order replacement trim cylinder for appropriate boat side per the following chart:

Now, it's a little trickier if you don't know or can't determine the casting number from your existing trim cylinders. It can still be done, so don't panic. Here's how to determine the correct trim cylinders:

How to measure main trim cylinder for 1981 to 1990 Boats If your boat is from 1981 to 1990, you'll need to get out a tape measure and measure JUST the main black tube (see the picture on the right as reference of what portion to measure), from the tip of the mounting eye to the end of the main tube. DO NOT include the length of the part that comes out of the main tube to lift your outdrive. Measure ONLY the main tube and mounting eye. Order replacement trim cylinder for appropriate length per the following chart: 1981-1990 Boats Length of Main Cylinder Starboard side Trim Cylinder Port side Trim Cylinder 15-1/2 inches 9B-104-01 9B-104-02 16-1/2 inches 9B-106-01 9B-106-02   Be sure you measured JUST the main black tube. See paragraph & photo above for details.

 Call us toll-free at 866-969-0441 anytime to place an order if you're not absolutely certain of which trim cylinder to order. We welcome the opportunity to help you find the right trim cylinder or any boating parts you may need.

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Call us at 919-247-0928 to place an order or for assistance at any time. GetBoatGear.com is an authorized dealer for Sterndrive Engineering Marine products. Boating items we currently offer include complete, lower, and upper unit outdrives, outdrive install kits, transom repair parts, shift cables, anode kits, trim cylinders, trim cylinder hoses, and boat propellers. We welcome the opportunity to help find the parts and items you need for your boat.