Sierra 18-2174 MerCruiser Alpha One U-Joint

Sierra 18-2174 Heavy Duty U-Joint Cross and Bearing

Features:

• Includes both straight and 90° grease fitting
• Heavy Duty

Fits:

• Alpha I Units s/n B418819 & Above, also fits Alpha I SS & Bravo

Interchangeable with:

• GLM
• 28030
• Mallory
• 9-72405
• MerCruiser Stern Drive
• 36312
• 41431
• 58749
• 75832
• 758321
• 75832A1
• 75832A2
• 75832A3
• 75832B
• 75832B1
• 75832B2
• 75832B3
• 75832T
• 75832T1
• OMC Stern Drive
• 3850812
• 915717
• Volvo Penta
• 3850812

Frequently Asked Questions

What is the Sierra 18-2174 Heavy Duty U-Joint Cross and Bearing used for?

The Sierra 18-2174 Heavy Duty U-Joint Cross and Bearing is a heavy-duty replacement component for specified marine stern drive applications. It includes both straight and 90° grease fittings and is designed for Alpha I units with serial number B418819 and above, as well as Alpha I SS and Bravo units.

Which stern drives does the Sierra 18-2174 U-Joint Cross and Bearing fit?

The Sierra 18-2174 fits Alpha I units with serial number B418819 and above. The product description also specifies that it fits Alpha I SS and Bravo units. Verify your stern drive type and serial number before ordering to confirm compatibility.

Does the Sierra 18-2174 include grease fittings?

Yes. The Sierra 18-2174 Heavy Duty U-Joint Cross and Bearing includes both a straight grease fitting and a 90° grease fitting. These two grease fitting configurations are listed as features of the product.

Is the Sierra 18-2174 a heavy-duty U-joint cross and bearing?

Yes. The Sierra 18-2174 is identified as a Heavy Duty U-Joint Cross and Bearing. The heavy-duty construction is specifically listed as a product feature in the supplied description.

What parts does the Sierra 18-2174 replace or interchange with?

The Sierra 18-2174 is interchangeable with GLM 28030 and Mallory 9-72405. Listed MerCruiser Stern Drive numbers include 36312, 41431, 58749, 75832, 758321, 75832A1, 75832A2, 75832A3, 75832B, 75832B1, 75832B2, 75832B3, 75832T, and 75832T1.

Does the Sierra 18-2174 interchange with OMC or Volvo Penta parts?

Yes. The supplied product description lists OMC Stern Drive numbers 3850812 and 915717 as interchangeable with the Sierra 18-2174. It also lists Volvo Penta part number 3850812. Verify the existing part number and stern drive application before selecting this replacement.

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