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Description
alpha gear 2 MerCruiser Alpha One 43-853640A2 Gen II 1998 & UP Upper Gear set 2.00: – NLA MarinePart Numbers Included 43 853640A2 Gear Kit (MerCruiser Gen II Upper Unit Gearcase 1998 & Up [SN 0L000040 and above]) 821823 & 853640 (stamped numbers) 66081A2 Bearing Carrier Item Details Found in MerCruiser Gen II upper gearcases for GM 3. 0L 4cyl Engines 1998 & Up The gear set here is 43 75325A3 (Sierra equivalent 18 2204) 24 24 (tooth count) (1. 62: 1 & 2. 00: 1 Ratio Sterndrives) If you have any questions on compatibility, or any other questions
Part Numbers Included
-
43-853640A2 Gear Kit (MerCruiser Gen II Upper Unit Gearcase 1998 & Up [SN 0L000040 and above])
- 821823 & 853640 (stamped numbers)
- 66081A2 Bearing Carrier
Item Details
- Found in MerCruiser Gen II upper gearcases for GM 3.0L 4cyl Engines 1998 & Up
- The gear set here is 43-75325A3 (Sierra equivalent 18-2204)
- 24-24 (tooth count) (1.62:1 & 2.00:1 Ratio Sterndrives)
- If you have any questions on compatibility, or any other questions about this item, please don't hesitate to contact us.
- Freshwater Used Parts.
- These look great and were removed from a completely functional upper gearcase.
- The bearings are still on this and should be ok yet, but for piece of mind I would recommend you should replace them, but this is completely up to your discretion...
- Purchase with confidence!
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
4.8 ★★★★★
Based on 437 reviews
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Product Reviews
★★★★★ 4
Amazing but quality changed
Size: Large, Color: (002) Black / Black / Halo Gray
Love these socks so much, been buying them for about 4 years now!! Not giving them 5 stars anymore because the quality is different and not as good, durable and thick as before.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 10, 2025
★★★★★ 5
The best no show socks
The only no show socks I have ever found that do not slide down. These are very comfortable and the extra tab on the back provides comfort by keeping shoes from rubbing the back of your foot. The top of the sock also comes up high enough to cushion the top of your foot all while still remaining hidden while wearing tennis shoes or even with my hey dudes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2025
★★★★★ 5
Great quality and fast shipping
Size: Medium, Color: (001) Black / Black / Castlerock
These socks are tight but after the first wash and dry , they fit perfect and NEVER slide off , ordered a second pack
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Comfortable, Durable, and Stylish
Perfect gift choice! Excellent quality socks with a variety of colors to match any wardrobe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2025
★★★★★ 5
Nice.
Size: Medium, Color: Prime Pink/White Assorted
These were great quality and perfect fit. They held up. Under Armour seems to make the better quality socks than others.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
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