Sierra 18-2777 Water Hose Connection, Replaces 854031, for Volvo Penta AQ151/165/170/171 and BB165/170 Stern Drive Engines

The Sierra 18-2777 Water Hose Connection is a direct-fit replacement cooling system component for Volvo Penta stern drive engines. It connects the raw water hose to the engine cooling circuit, sealing the joint so cooling water is delivered without leaks under running pressure. Built from metal in a white finish, it is engineered to meet or exceed the performance of the original equipment part it replaces and to hold up in continuous marine service.

This water hose connection is a straightforward like-for-like swap for the original Volvo Penta fitting bearing part number 854031, making it a simple maintenance item when the factory connection has corroded, cracked, or is leaking at the hose joint. It is sized and shaped to match the original mounting points on applicable Volvo Penta AQ and BB series stern drive engines, so no modification is needed for installation.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2777
• Product Type: Water Hose Connection
• Material: Metal
• Color: White
• Product Dimensions: 7 inches L x 6 inches W
• Weight: 0.21 pounds
• UPC: 030999313102
• Replaces (OEM): 854031
• Fitment: Volvo Penta AQ151B, AQ151C, AQ171A, AQ17C, AQ165A, AQ170A, AQ170B, AQ170C, BB165A, BB170A, BB170B, BB170C

Fitment

• Volvo Penta AQ151B
• Volvo Penta AQ151C
• Volvo Penta AQ171A
• Volvo Penta AQ17C
• Volvo Penta AQ165A
• Volvo Penta AQ170A
• Volvo Penta AQ170B
• Volvo Penta AQ170C
• Volvo Penta BB165A
• Volvo Penta BB170A
• Volvo Penta BB170B
• Volvo Penta BB170C

Replaces (OEM)

• 854031

Frequently Asked Questions

What is the Sierra 18-2777 used for? The Sierra 18-2777 is a water hose connection that joins the raw water hose to the cooling system on applicable Volvo Penta stern drive engines, sealing the joint against leaks.

What OEM part number does the 18-2777 replace? It replaces Volvo Penta part number 854031, so it is a direct match for that original fitting.

Which engines is the Sierra 18-2777 designed to fit? It fits Volvo Penta AQ151B, AQ151C, AQ171A, AQ17C, AQ165A, AQ170A, AQ170B, AQ170C, BB165A, BB170A, BB170B, and BB170C stern drive engines.

What material is the 18-2777 water hose connection made from? It is made from metal with a white finish, built for continuous exposure to marine cooling water.

What are the dimensions of the Sierra 18-2777? The part measures 7 inches long by 6 inches wide.

How much does the 18-2777 weigh? It weighs 0.21 pounds.

Is the Sierra 18-2777 a genuine OEM part or aftermarket? It is a Sierra-manufactured aftermarket replacement engineered to meet or exceed the performance of the original Volvo Penta water hose connection it replaces.

Does the 18-2777 come with a warranty? Yes, Sierra parts including the 18-2777 water hose connection are covered under Sierra's customer satisfaction warranty.

What is included when I order the 18-2777? The order includes one Sierra 18-2777 water hose connection unit.

Will the 18-2777 fit engines outside the listed Volvo Penta AQ and BB series? No, the Sierra 18-2777 is designed specifically for the listed Volvo Penta AQ151B, AQ151C, AQ171A, AQ17C, AQ165A, AQ170A, AQ170B, AQ170C, BB165A, BB170A, BB170B, and BB170C models, so fitment outside that list is not confirmed.

How do I know if my water hose connection needs replacing? Cracking, corrosion, or a leak at the raw water hose joint on the applicable Volvo Penta engine is a sign the connection, such as the Sierra 18-2777, needs replacement.