When it comes to maintaining or upgrading your boat's outboard motor, one crucial measurement you'll need is the shaft length. The shaft length of an outboard motor determines how deep the motor sits in the water and plays a critical role in ensuring your boat performs efficiently. Whether you're replacing a propeller, installing a new motor, or adjusting your boat’s setup, knowing how to measure the outboard motor shaft size is key to making sure everything fits correctly. Mercury, Yamaha, Suzuki, and all other outboard brands fit the same criteria for measuring.


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- Cobalt Boat Latch Receiver 407763 | R35 Stainless 1 1/8 x 7/8 InchGLS Stock #: 1116203-AE633$3.95 MSRP: $5.33
- Cobalt Boat Sport Tower Cover | R4/R6/R8 Outboard Taylor Made 466163SBGLS Stock #: 1116224-FA484$279.95 MSRP: $377.93
- Dialight Boat Indicator Light 557-1503-203F | LED 12V 5/8 Inch RedGLS Stock #: 1116207-AB324$12.95 MSRP: $17.48
- Infinity Boat Wired Remote Control MC-40 | Cobalt Viper 3.5 InchGLS Stock #: 1116212-AE545$139.95 MSRP: $188.93
- Cobalt Boat Bimini Top Cover 466229TP | E2 Tower R4/R6/R8 TaupeGLS Stock #: 1116229-GF635$459.95 MSRP: $620.93
- Cobalt Boat Blank Switch Panel 503104BL | Black Acrylic w/ Red LEDGLS Stock #: 1116249-BD283$139.95 MSRP: $188.93
- Cobalt Boat Carpet Runner 406754 | 24 5/8 x 36 7/8 Inch Dark GrayGLS Stock #: 1116243-FD863$109.95 MSRP: $148.43
- Cobalt Boat Boot Cover 466263YL | A29/R4/R6/R8/R30 YellowGLS Stock #: 1116225-GF635$99.95 MSRP: $134.93
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Notes From The Skipper
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Mercury Marine is a renowned name in the boating world, known for its superior quality and cutting-edge technology. Here’s why Mercury outboards are an excellent choice: Unrivaled Performance, Innovative Technology: Features like SmartCraft digital technology provide real-time diagnostics and enhanced control and are designed to endure harsh marine environments.
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What's more satisfying than a good day spent on the boat? Maybe knowing that you've worked on it yourself! DIY work doesn't have to mean slapdash or chintzy. With quality parts, the right tools, and some spare time, you can make improvements you can be proud of.
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Spring is the time for rejuvenation and renewal. What better way to prepare for the oncoming boat season than to enter it with new seats. Follow the steps below for a fun and customizable DIY project.
Testimonials
What our customers are saying
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This place is new to me. I have been out of the boat ownership picture for years. I made a big order and by my own error, i ordered the wrong item. GLS has a second to none customer service in all aspects of doing business on-line. I cannot emphasize the happiness and stress free experience enough. I highly recommend your hard earned dollars to be spent at Great Lakes Skipper.
Al
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The customer service is great up to the point where you have to return a product. I ordered a boat cover for my 2019 Sun Tracker and mistakenly ordered one for a 2018. It obviously didn’t fit, so I searched until I found the cover for a 2019 and returned the 2018 cover. They waved the restocking fee because I ordered a new one. The second cover doesn’t fit either. This time the return was paid for.
Tim P
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I had difficulty ordering on line with a Canadian credit card and shipping to the boat in Florida It was easily taken care of over the phone. Very efficient people. Good pricing. I like them.
Rick L
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Alexis helped me with my purchase. She was knowledgeable and patient. She was able to assist me with pricing and shipping to make the deal. I highly recommend Alexis for the highest level of assistance you could receive at Great Lakes Skipper.
Neil T