SKU: 59784200750

New OBR / Mercruiser 1991-2020 Alpha I Gen II Upper Sterndrive Assembly

Sale price$944.99 Regular price$1049.99
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Description

New OBR / Mercruiser 1991-2020 Alpha I Gen II Upper Sterndrive AssemblyThis listing is for a New OBR Mercruiser Alpha I Generation II Upper Drive Shaft Assembly, which will fit models from 1991 to 2020 (Please note that Alpha II serial numbers are from OD494569 and forward). New upper drives are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. This item is available in the following Gear Ratios: 1. 47, 1. 61, 1. 81, 1. 94, 2. 0 and 2. 4. When

This listing is for a New OBR Mercruiser Alpha I Generation II Upper Drive Shaft Assembly, which will fit models from 1991 to 2020 (Please note that Alpha II serial numbers are from OD494569 and forward). New upper drives are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. This item is available in the following Gear Ratios: 1.47, 1.61, 1.81, 1.94, 2.0 and 2.4. When placing an order, please specify gear ratio, number of cylinders, model and serial number. Please use chart below to help identify your model:

Alpha I Generation II Standard Production Models
ENGINE HP

DISPLACEMENT

LITRE/CID

CYLINDERS GEAR RATIO TOOTH COUNT YEAR
3.0L 130 3.0/181 4-In-Line 2.0 24-24 1998-2020
3.0L 130 3.0/181 4-In-Line 1.94 20-24 1991-1997
4.3L 175 4.3/262 V6 1.81 17-19 1991-2020
5.0L 230 5.0/305 V8 1.61 24-24 1991-2020
5.7L 260 5.7/350 V8 1.47 20-22 1991-2020
NA NA NA NA 2.4 20-24 1998-2020


A Limited One-Year Warranty is included in the order. An additional Twelve-Month Extended Warranty is available. See options and pricing above. Please read the terms of OBR's New and Remanufactured Parts Warranty at https://obparts.com/obr-red-rhino-new-and-remanufactured-parts-warranty/.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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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
SKU: 59784200750

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4.8 ★★★★★
Based on 23 reviews
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O
Verified Purchase
Opinionated
Waukegan, US
★★★★★ 4
Good product
Size: 6 Pieces
Fun for dogs with anxiety or bored. Easy to fill and clean with different options to build.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
J
Verified Purchase
Joy
West Palm Beach, US
★★★★★ 5
Durable and fun
Size: 4 Pieces, Size: 4 Pieces
I have a chewer who gets bored in the afternoon. She loves these Lego blocks. They’re sturdy enough for a big chewer and they hold her interest . She really enjoys figuring out how to get her breakfast!
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Reviewed in the United States on June 4, 2026
K
Verified Purchase
Karen Brewer
Whiting, US
★★★★★ 3
Love the idea!
Size: 6 Pieces, Size: 6 Pieces
Love the idea of this product! Arrived 3/25/2026 and started using it the same day. Lab puppies (8 months old) loved it too, until one of the tabs was chewed off 😞 One of the puppies ate something (not this product) last week and was sick & finally threw up the rubber pieces he ate. So they can’t use the toys they love!
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Reviewed in the United States on April 1, 2026
G
Verified Purchase
Gabby
Los Angeles, US
★★★★★ 5
Get 8 pack for bigger / stronger dogs
Size: 6 Pieces, Size: 6 Pieces
This is the best puzzle toy i have found for my GSD mix. All around high quality product 10/10. Thick, durable rubbery material that holds up against a strong chewer. Individual pieces are big and bulky enough that i don’t have to worry about my bigger dog accidentally (or intentionally) swallowing a piece, so i don’t need to supervise. That being said, if you have a bigger dog or a strong chewer, i HIGHLY recommend getting the 8 pack if you actually want to keep them busy for more than 20 mins consistently. Bigger dogs just have more leverage to tug on the pieces because obviously…they are bigger, so its just easier for them. The more pieces you add and more tangled/thicker you can make it, the less leverage they have and the harder it is for them to get a good grip. I have a german shepherd/pitbull mix (big boi, v smart, v strong) and i initially got the 4 pack which, after the first few times, only took him about 5 mins to get all the pieces apart even with level 5 connections. So I ordered an additional 6 pieces (i have a total of 10 pieces now) so i could make it harder for him and it was totally worth it. Now I use 8 pieces with level 5 connections and vital essentials freeze dried beef liver treats inside for my GSD and it consistently takes him 30+ mins to get the whole thing apart. I have timed this lol. I can rebuild the 8 pieces multiple different ways to make it more or less challenging (but i always opt for as difficult as possible to keep him entertained for as long as possible) I use the other two pieces with a level 1 or 2 connection for my other dog- bordercollie mix who is not a very strong chewer, he mostly just rolls it around/ licks it until it finally opens or i help him. Both of my dogs are obsessed with this. And i love watching them try to figure it out.
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Reviewed in the United States on May 7, 2026
C
Verified Purchase
Cassandra DeSpain
Belleville, US
★★★★★ 5
Awesome Tough Chewer Focus Puzzle
Size: 8 Pieces, Size: 8 Pieces
Our 2 yr old busy Mini Goldendoodle (24lbs) looooves this! The material is super tough, yet malleable; he has chewed away and you can’t even tell. We got the 8 pack, worth it! I load them all up with mostly kibble and a treat or two. It took just a short time for him to figure out how to really get it apart. On 1 it came apart really easy for him. We are mostly on 3s, with 2s. When he gets down to only 2 pieces connected it’s usually a 3 and it takes a little longer to get apart due to less leverage. It is mostly easy to use but the higher the plug end is, the more effort it will also take for YOU to get it together. The numbers are a little hard to see, more so on the yellow over the blue. If you use kibble like me, don’t fill it too full as then it won’t connect fully and be prepared for kibble to fly everywhere when they finally get it off. There are holes in the plug part, if you put something in it like peanut butter, remember to poke the holes out! Eew! Other than that they are fairly easy wash out in the sink! Overall, this has become our go to, extended focus, quiet time, [essentially a] slow feeder!
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Reviewed in the United States on April 24, 2026

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