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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
For Your Every Summer RSVP, with Code: SUMMER15
Description
Damping Adjust Part: Knob, RD Adjust [3/8-32 UNEF-2A, 0.960 TLG] 303 SSDamping Adjust Part: Knob, RD Adjust [3 8 32 UNEF 2A, 0. 960 TLG] 303 SS
![Damping Adjust Part: Knob, RD Adjust [3/8-32 UNEF-2A, 0.960 TLG] 303 SS Damping Adjust Part: Knob, RD Adjust [3/8-32 UNEF-2A, 0.960 TLG] 303 SS](https://cdn.shopify.com/s/files/1/0664/3246/7190/files/no_image_45f6fccd-6e6c-4b48-94e4-ef0c974f15b1.jpg?v=1745870327)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.2 ★★★★★
Based on 2125 reviews
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Product Reviews
★★★★★ 5
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.
WAS THIS REVIEW HELPFUL?YesReportShare
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.
WAS THIS REVIEW HELPFUL?YesReportShare
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.
WAS THIS REVIEW HELPFUL?YesReportShare
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
★★★★★ 5
Stay cool
Just what I needed, super fast shipping
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Reviewed in the United States on October 19, 2025
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![Valve: [1.100 OD X 0.504 ID X 0.010 TH]](https://cdn.shopify.com/s/files/1/0664/3246/7190/files/no_image_31b6694c-b83f-47f5-952f-9bfe3784069f.jpg?v=1745870379)
![Shaft: (T) [0.620 OD X 10.100 TLG] Steel, Chrome, Solid, 1.400](https://cdn.shopify.com/s/files/1/0664/3246/7190/files/no_image_0371d141-2fdf-4101-a060-3fd4e6b478e9.jpg?v=1745870318)
![Piston: (T) Damping [Ø 1.834 Bore, Ø 0.502 ID, 4 Port] PM, Ø1.730 Gland OD](https://cdn.shopify.com/s/files/1/0664/3246/7190/files/no_image_9d55df18-5816-40c7-9c16-5c792c0f26bb.jpg?v=1745870322)
![Valve: Shim, Bleed (T) [ Ø .502 ID, Ø 1.600 OD, 0.010 TH] 8 Port, .115 Wide Slot](https://cdn.shopify.com/s/files/1/0664/3246/7190/files/no_image_04632464-35ae-4567-9a85-39b5ae2c6ec5.jpg?v=1745870332)
![Tooling: Pin Spanner Wrench [Ø 2.5 Body] Internal Bypass, Outer](https://cdn.shopify.com/s/files/1/0664/3246/7190/files/no_image_3038d10f-6ced-4b4f-9a8b-27acdf110d5b.jpg?v=1745870301)