SKU: 81413435221

New OBR / Mercruiser 1969-1990 Alpha I 4-CYL/V6/V8 Complete Sterndrive Assembly

$1844.99 $2049.99
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

New OBR / Mercruiser 1969-1990 Alpha I 4-CYL/V6/V8 Complete Sterndrive AssemblyThis listing is for a New OBR Mercruiser Alpha I Complete Drive Shaft Assembly, which will fit models from 1969 to 1990 (Please note that Alpha I serial numbers are from OD494569 and before). New drive shaft assemblies are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. Bolt Kit Included. This item is available in the following Gear Ratios: 1. 50, 1. 65, 1. 84, and 1. 98.

This listing is for a New OBR Mercruiser Alpha I Complete Drive Shaft Assembly, which will fit models from 1969 to 1990 (Please note that Alpha I serial numbers are from OD494569 and before). New drive shaft assemblies are assembled with a combination of all new OEM and new aftermarket parts using only high grade American steel for gears and shafts. Bolt Kit Included. This item is available in the following Gear Ratios: 1.50, 1.65, 1.84, and 1.98. 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: 81413435221

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4.2 ★★★★★
Based on 22 reviews
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Axmceach
Alexandria, US
★★★★★ 4
Would buy again
Size: Small
Would have given 5 stars, but my dog was able to chew this down pretty quickly, so not the most durable. I do like that this is made with better material than other dog chews, so I would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
J
Verified Purchase
Jonathan Johnson
Pawtucket, US
★★★★★ 5
he Durable, Natural Chew That Finally Gives Peace of Mind
Size: Large
Why It's a Top-Tier Chew: Truly Safe Ingredients (Plant-Powered): This is the biggest selling point. The HonestChew is made from food-grade, plant-based cellulose, vegetable oil, and real antler bone powder—no nylon, no petroleum, and no plastic. This means I can finally relax when my dog is relentlessly gnawing, knowing the ingredients are safe. Engineered for Safety AND Toughness: The material is specifically designed to flake rather than splinter like hard bones or crack like many synthetic chews. This makes it a much safer choice for dental health and digestive safety, even for the most aggressive chompers. It has the feel of a hard chew but with a safer breakdown. Irresistible to Dogs: The chew is infused with real antler powder, giving it a natural, gnaw-worthy scent and flavor that keeps my dog engaged for long periods. The curved, ergonomic Infinity shape is excellent for dogs to grip securely with their paws, promoting a comfortable chewing posture. Dental Support: The nubs and ridges on the surface aren't just for looks; they provide a gentle scraping action that helps scrub away plaque and tartar buildup on the teeth and above the gumline while the dog is happily playing. Who Needs This? If you have a dog that quickly destroys "indestructible" toys, swallows rawhide too fast, or causes you stress with the risk of bone splintering, the WOOF HonestChew Infinity is the perfect solution. It stands up to serious chewing and satisfies that innate gnawing instinct with confidence. A highly recommended, long-lasting, and thoughtfully designed product that puts pet health first.
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Reviewed in the United States on October 22, 2025
J
Verified Purchase
jennifer
Port Orchard, US
★★★★★ 5
Great toy for super chewers!!
Size: Large
My dog is a super chewer and he enjoys these so much. I do too cause I feel like my money is actually getting spent well than on a plush toy he’ll destroy in two seconds. Definitely recommend these all the time for anyone who has that same issue with their pets. Very durable and perfect size for my big pit.
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Reviewed in the United States on June 2, 2026
C
Verified Purchase
cinmar
Whiting, US
★★★★★ 4
My dog loves this toy and she hasn’t chewed it up yet.
Size: Medium
This is a good chew toy for my aggressive chewer. I bought the large size for my medium size dog.
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Reviewed in the United States on June 5, 2026
H
Verified Purchase
Haley Monacchio
New York, US
★★★★★ 5
My Samoyed loved this!
Size: Medium
My dog’s favorite thing. This is his 4th toy and he loves it. The quality is great and it lasts very long. Definitely worth every penny you spend. It keeps my samoyed engaged every morning and every night. There is no choke hazard, so all dogs can use it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026

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