★★★★★ 5
Perfect fit
Worked great for a 1965 mercury thunderbolt 150hp
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2025
Ronstan RF4055 ClearStart 50mm Sailing Watch - Blue/Grey - RF4055B
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Ronstan RF4055 ClearStart 50mm Sailing Watch - Blue/Grey - RF4055BRF4055 ClearStart 50mm Sailing Watch Blue Grey Innovative Race Functions with Bold Styling Ronstan has taken the popular 50 mm (2") size and features you love and added more durability, comfort, and ease of use to our design. Ronstans ClearStart race timer and watches combine contemporary styling with true sailing functionality. They feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing
Quick Dispatch:
Your Ronstan RF4055 ClearStart 50mm Sailing Watch - Blue/Grey - RF4055B orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Ronstan RF4055 ClearStart 50mm Sailing Watch - Blue/Grey - RF4055B ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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MerCruiser Replacement Parts
OEM quality MerCruiser Alpha 1 Gen1 replacement part. Everything you need and some things you don't because it's a universal kit that works for several models.
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Reviewed in the United States on July 19, 2025
★★★★★ 5
OEM is always the answer
No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install.
While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.
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Reviewed in the United States on September 9, 2025
★★★★★ 5
Husbands things
My husband bought this. I don’t know much about it but he has zero complaints. He bought it for a boat. He has fixed up 2 boats, sold one & we kept the other. So he apparently knows what to buy & how to use it.
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Reviewed in the United States on November 6, 2025
★★★★★ 4
Amazon is easy and fast . No problems the oarts was exactly as described.
liked that everything was in one bag . and could make sure everything was changed .
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Reviewed in the United States on August 3, 2020
