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MerCruiser Alpha Gen 1 Outdrive (1973-1991)

MerCruiser Alpha Gen 1 Outdrive (1973-1991)

  • OEM MerCruiser Pinion Nut 11-35921

    OEM MerCruiser Pinion Nut 11-35921

    Mercury Marine / Quicksilver

    $7.70 $6.31
    OEM MerCruiser Pinion Nut 11-35921 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-11-35921
    Availability:
    In Stock - Ships same or next business day.
    Fitment:
    .625-18
    $7.70 $6.31
  • OEM MerCruiser Tapered Roller Bearing Gen 2 31-32575T 1

    OEM MerCruiser Tapered Roller Bearing Gen 2 31-32575T 1

    Mercury Marine / Quicksilver

    $34.50 $26.26
    OEM MerCruiser Tapered Roller Bearing Gen 2 31-32575T 1 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-31-32575T1
    Availability:
    In Stock - Ships same or next business day.
    $34.50 $26.26
  • Sold Out, please call for ETA.
    OEM MerCruiser Water Pocket Gasket 27-558101

    OEM MerCruiser Water Pocket Gasket 27-558101

    Mercury Marine / Quicksilver

    $3.13
    OEM MerCruiser Water Pocket Gasket 27-558101 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-27-558101
    Availability:
    In Stock - Ships same or next business day.
  • Sold Out, please call for ETA.
    OEM MerCruiser Water Pump Sleeve-O/B 23-29804T

    OEM MerCruiser Water Pump Sleeve-O/B 23-29804T

    Mercury Marine / Quicksilver

    $8.70 $6.96
    OEM MerCruiser Water Pump Sleeve-O/B 23-29804T Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-23-29804T
    Availability:
    In Stock - Ships same or next business day.
  • OEM MerCruiser Bearing Carrier Needle Brg 31-30956T

    OEM MerCruiser Bearing Carrier Needle Brg 31-30956T

    Mercury Marine / Quicksilver

    $19.49 $15.99
    OEM MerCruiser Bearing Carrier Needle Brg 31-30956T Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-31-30956T
    Availability:
    In Stock - Ships same or next business day.
    $19.49 $15.99
  • Sold Out, please call for ETA.
    OEM MerCruiser Drive Gear Bearing  31-35988A12

    OEM MerCruiser Drive Gear Bearing 31-35988A12

    Mercury Marine / Quicksilver

    $383.99 $329.99
    OEM MerCruiser Drive Gear Bearing 31-35988A12 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-31-35988A12
    Availability:
    In Stock - Ships same or next business day.
  • OEM MerCruiser Lower Driveshaft Bearing-Alp 31-42647A 1

    OEM MerCruiser Lower Driveshaft Bearing-Alp 31-42647A 1

    Mercury Marine / Quicksilver

    $63.50 $47.31
    OEM MerCruiser Lower Driveshaft Bearing-Alp 31-42647A 1 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-31-42647A1
    Availability:
    In Stock - Ships same or next business day.
    $63.50 $47.31
  • Sold Out, please call for ETA.
    OEM MerCruiser Shift Shaft Bushing Oil Seal 26-89236 1

    OEM MerCruiser Shift Shaft Bushing Oil Seal 26-89236 1

    Mercury Marine / Quicksilver

    $12.69
    OEM MerCruiser Shift Shaft Bushing Oil Seal 26-89236 1 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-26-892361
    Availability:
    In Stock - Ships same or next business day.
  • OEM MerCruiser Water Pump Housing Rubber Ring O/B 25-30271 25-8M0214918

    OEM MerCruiser Water Pump Housing Rubber Ring O/B 25-30271 25-8M0214918

    Mercury Marine / Quicksilver

    $2.00 $1.99
    OEM MerCruiser Water Pump Housing Rubber Ring O/B 25-30271 25-8M0214918 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced...
    Part Number:
    710-25-8M0214918
    Availability:
    In Stock - Ships same or next business day.
    $2.00 $1.99
  • OEM MerCruiser Bearing Carrier Keyed Wash 14-79447

    OEM MerCruiser Bearing Carrier Keyed Wash 14-79447

    Mercury Marine / Quicksilver

    $13.20 $9.50
    OEM MerCruiser Bearing Carrier Keyed Wash 14-79447 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-14-79447
    Availability:
    In Stock - Ships same or next business day.
    $13.20 $9.50
  • On Sale
    Special Order! See availability for details
    OEM MerCruiser Washer 12-29245 12-8M0204649

    OEM MerCruiser Washer 12-29245 12-8M0204649

    Mercury Marine / Quicksilver

    $1.20 $0.87
    OEM MerCruiser Washer 12-29245 12-8M0204649 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    MM-12-8M0204649
    Availability:
    See Special Order Details
    Fitment:
    .281 x .500 x .060
    $1.20 $0.87
  • Sold Out, please call for ETA.
    OEM MerCruiser Water Inlet Plate Screw 10-76156

    OEM MerCruiser Water Inlet Plate Screw 10-76156

    Mercury Marine / Quicksilver

    $3.45
    OEM MerCruiser Water Inlet Plate Screw 10-76156 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced
    Part Number:
    710-10-76156
    Availability:
    In Stock - Ships same or next business day.
    Fitment:
    #10-32 x 1.88
  • OEM MerCruiser Face Plate Gasket-O/B  27-858524

    OEM MerCruiser Face Plate Gasket-O/B 27-858524

    Mercury Marine / Quicksilver

    $3.90 $3.84
    Water pump gasket 858524 For use on MerCruiser 1, R, MR and Alpha One stern drives (s/n 2495186 through 0D469858), Mercury and Mariner 65 hp (4-cylinder) through V-6 outboards with short-vane water pump impellers. Change seals and gaskets when...
    Part Number:
    710-27-858524
    Availability:
    In Stock - Ships same or next business day.
    $3.90 $3.84
  • Sold Out, please call for ETA.
    OEM MerCruiser Gearcase Seal Kit O/B  26-89238A2

    OEM MerCruiser Gearcase Seal Kit O/B 26-89238A2

    Mercury Marine / Quicksilver

    $93.50 $68.52
    OEM MerCruiser Gearcase Seal Kit O/B 26-89238A 2 Gearcase seal kit 89238A2 is for Mercury and Mariner 135 hp through 150 hp V-6 outboards (serial number 0A904646 and newer) and 175 hp through 200 hp V-6 outboards (serial number 6618751 and newer). 
    Part Number:
    710-26-89238A2
    Availability:
    In Stock - Ships same or next business day.
  • OEM MerCruiser Water Pump Gasket 27-8M0090319

    OEM MerCruiser Water Pump Gasket 27-8M0090319

    Mercury Marine / Quicksilver

    $4.00 $3.90
    OEM MerCruiser Water Pump Gasket 27-8M0090319.  Water pump gasket 8M0090319 Change seals and gaskets when servicing or replacing water pump impellers. See your owner's manual or service manual for more information.
    Part Number:
    710-27-8M0090319
    Availability:
    In Stock - Ships same or next business day.
    $4.00 $3.90
  • Sold Out, please call for ETA.
    OEM Quicksilver/Mercury Gear Housing Insert - Alpha 1 - Port - 934241

    OEM Quicksilver/Mercury Gear Housing Insert - Alpha 1 - Port - 934241

    Mercury Marine / Quicksilver

    $9.00 $7.99
    OEM Quicksilver/Mercury Gear Housing Insert-Alpha 1 - Port 93424 1 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-934241
    Availability:
    In Stock - Ships same or next business day.
  • OEM MerCruiser D/S Housing Gear Chamber Oilseal 26-32511

    OEM MerCruiser D/S Housing Gear Chamber Oilseal 26-32511

    Mercury Marine / Quicksilver

    $23.17 $18.18
    OEM MerCruiser D/S Housing Gear Chamber Oilseal 26-32511 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-26-32511
    Availability:
    In Stock - Ships same or next business day.
    $23.17 $18.18
  • OEM MerCruiser Driveshaft Oil Seal-O/B 26-16977

    OEM MerCruiser Driveshaft Oil Seal-O/B 26-16977

    Mercury Marine / Quicksilver

    $17.99 $14.34
    OEM MerCruiser Driveshaft Oil Seal-O/B 26-16977 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced EACH
    Part Number:
    710-26-16977
    Availability:
    In Stock - Ships same or next business day.
    $17.99 $14.34
  • Special Order! See availability for details
    OEM MerCruiser Pinion Gear Washer 12-92721

    OEM MerCruiser Pinion Gear Washer 12-92721

    Mercury Marine / Quicksilver

    $1.40
    OEM MerCruiser Pinion Gear Washer 12-92721 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced
    Part Number:
    MM-12-92721
    Availability:
    See Special Order Details

MerCruiser Alpha Gen 1 Outdrive

The Mercruiser Alpha One lives up to its reputation as “the world’s most popular sterndrive” by delivering reliable speed and performance in a value-priced package. Used for single and twin engine applications, the Alpha One Gen 1 outdrive cuts through the water thanks to a super-efficient hydrodynamic profile producing very little drag and increased fuel efficiency. Made to power boats capable of speeds up to 65 mph with up to 300hp gas engines (or 150hp diesel engines). Variety of maintenance-free features such as an integrated water pump and permanently lubricated pivot points help take the stress out of boat ownership. Replaces MerCruiser Gen 1 Alpha outdrives from 1974-1991. Available in the following gear ratios:

  • 1.47/1.50 | 20-22 Tooth Count 
  • 1.62/1.65 | 24-24 Tooth Count 
  • 1.81/1.84 | 17-19 Tooth Count 
  • 1.94/1.98/2.00 | 20/24 Tooth Count

Enjoy quick response time and delivery when you purchase your MerCruiser Alpha 1 outdrive and accessories from PowerBoatSupply.com. 1-year OEM factory warranty against defects and workmanship. Propellers sold separately.

Mercury Alpha One features

Strength, versatility, and reliability make this budget-friendly outdrive propulsion system a popular choice year after year. Some highlight features of the Alpha 1 include:

  • Slices through the water with minimal drag thanks to hydrodynamic lower unit
  • Tri-Paint System (Irridite, EDP & Powder Paint) forms a long-lasting corrosion resistant barrier
  • Maximum power with quiet operation thanks to noise-reducing Through-Prop exhaust
  • Power Trim XD® system automatically returns the drive to the water so that you can maintain complete control of your boat even in choppy and rough water
  • Drive lube monitor sounds the alarm when drive lube is low
  • Refill lube without pulling your boat out of the water thanks to easy-inspection engine mounting
  • Flexible options for using 3, 4 or 5 blade propellers in stainless steel or aluminum
  • 300 HP (221 kW) maximum power capacity with a 15-inch diameter propeller

Mercury Marine Alpha Series

PowerBoatSupply.com is proud to have served boat owners and mechanic shops for over 35 years with high-quality outdrives and parts. Get prompt delivery on your Alpha Gen 1 or Alpha Gen 2 sterndrive, along with any other replacement MerCruiser parts you need to keep your boat in peak operating condition. We’re a Platinum-level Mercury dealer, and our knowledgeable customer service reps are ready to field any questions you may have about these products and which parts and accessories are right for your needs.