SKU: 35899224854

New OBR / Mercruiser 1969-1990 Alpha I Lower Sterndrive Assembly

Sale price$922.49 Regular price$1024.99
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Description

New OBR / Mercruiser 1969-1990 Alpha I Lower Sterndrive AssemblyThis listing is for a New OBR Mercruiser Alpha I Lower Drive Shaft Assembly, which will fit 4 6 8 Cylinder models from 1969 to 1990. (Please note that Alpha I serial numbers are from OD494569 and before). New lower drives are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. When placing an order, please specify gear ratio, number of cylinders, model, and serial number.

This listing is for a New OBR Mercruiser Alpha I Lower Drive Shaft Assembly, which will fit 4/6/8 Cylinder models from 1969 to 1990. (Please note that Alpha I serial numbers are from OD494569 and before). New lower drives are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. When placing an order, please specify gear ratio, number of cylinders, model, and serial number. Please note that older "R" style 4 & 6 cylinder units require that you reuse your input shaft. Please use chart below to help identify your model:

Alpha I Standard Production Models
ENGINE HP

DISPLACEMENT

LITRE/CID

CYLINDERS GEAR RATIO TOOTH COUNT
2.5 Litre 120 2.5 / 153 4-In-Line 1.98 20-24
3 Litre 130 3.0 / 181 4-In-Line 1.98 20-24
165 165 3.7 / 224 4-In-Line 1.84 17-19
175 175 4.3 / 262 V-6 1.84 17-19
180, 470, 190 180 3.7 / 224 4-In-Line 1.84 17-19
200 200 5.0 / 305 V-8 1.65 24-24
205 205 4.3 / 262 V-6 1.84 17-19
230 230 5.0 / 305 V-8 1.50 20-22
260 260 5.7 / 350 V-8 1.50 20-22
350 Magnum 270 5.7 / 350 V-8 1.50 20-22


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.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 35899224854

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David
San Leandro, US
★★★★★ 5
Still working great!!
I really didn't have a good feeling about ordering a starter online, but I was in a situation where I didn't have the time to get to the auto shop before my day off and Amazon could get me this part just in time. So I reluctantly gave it a shot. When it showed up it had a couple of small black pieces of plastic loose in the box similar to the pieces shown in another review on here. It didn't look like they from anything functional. I really needed to get my wife's car running so decided to install it anyways. The install was easy and it was a perfect fit. The only draw back would be that the signal wire didn't click in place like the signal wire on the original starter. But it was a snug fit. It has been installed and working great for a month now. Very happy with my purchase. It also had a message from the seller when I opened the box giving the starter a 2 year warranty. Very cool. If the starters fails in the next two years I'll get on here and edit my review. So if your reading this then it is still working great.
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Reviewed in the United States on December 10, 2025
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mammaof3
Alexandria, US
★★★★★ 5
Great quality at a great price too!
Husband got this for his ‘05 Camry and says it looks and fits just like the original. He was happy that it simply slid in with no adjustments needed. It’s been a couple months now and no problems at all. Very satisfied with this item.
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Reviewed in the United States on December 3, 2025
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Verified Purchase
Sybil
Fort Morgan, US
★★★★★ 5
Great value!
Worked great.
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Reviewed in the United States on May 20, 2026
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Verified Purchase
Tb320
Los Angeles, US
★★★★★ 4
Electrically good. Fitment not so good.
This starter worked fine when installed. The only reason I didn't give it a 5 star rating was fitment. the hole in the bell housing is slightly larger than the starter. The old starter, OEM, was a right fit. This puts all of the strain and torque of starting the engine on the two bolts that hold the starter in. I expect this to fail at some, hopefully, distant point in the car's future. In order to retorque the starter bolts, the battery and airbox have to be removed.
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Reviewed in the United States on October 6, 2025
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Verified Purchase
A. Clevinger
Boise, US
★★★★★ 5
Fit my 2006 3.3 Toyota Sienna..
Shipped quickly and fit as advertised. Works like it should and the price was good!
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Reviewed in the United States on April 15, 2026

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