21457172 Volvo Penta Seawater Filter Housing 21400685 Filter Cover | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta Seawater Filter Housing Assembly - Part Number: 21457172

A genuine used Volvo Penta seawater-filter housing assembly for selected D4 and D6 marine diesel engines.

The housing contains the raw-water strainer basket and accepts transparent cover 21400685. It removes weed, shell and other debris from incoming seawater before the water reaches the pump, charge-air cooler, heat exchanger and exhaust cooling circuit.

⚙️ Key Features

• Genuine Volvo Penta OEM seawater-filter housing
• Correct current Volvo Penta part number 21457172
• Accepts transparent filter cover 21400685
• Replaces several earlier complete D4 / D6 filter assemblies
• Protects downstream coolers and pumps from raw-water debris

🚤 Compatibility

Commonly used on

• Volvo Penta D4 and D6 raw-water cooling systems
• Engine-mounted seawater strainers using transparent cover 21400685

Typically suits

• Engine models:
• Volvo Penta D4-210A-A and D4-210A-B
• Volvo Penta D4-225A-B, D4-225A-C and D4-225A-D
• Volvo Penta D4-225I-B
• Volvo Penta D4-260A-A, D4-260A-B, D4-260A-C and D4-260A-D
• Volvo Penta D4-260D-B, D4-260D-C and D4-260D-D
• Volvo Penta D4-300A-A, D4-300A-C and D4-300A-D
• Volvo Penta D4-300D-A, D4-300D-C and D4-300D-D
• Volvo Penta D6-280A-A, D6-280A-B, D6-280A-C and D6-280A-D
• Volvo Penta D6-310A-A and D6-310A-B
• Volvo Penta D6-310D-B, D6-310D-C and D6-310D-D
• Volvo Penta D6-330A-B, D6-330A-C and D6-330A-D
• Volvo Penta D6-330D-B, D6-330D-C and D6-330D-D
• Volvo Penta D6-350A-A and D6-350A-B
• Volvo Penta D6-370A-B and D6-370A-C
• Volvo Penta D6-370D-A, D6-370D-B, D6-370D-C and D6-370D-D
• Volvo Penta D6-435D-A, D6-435D-C and D6-435D-D
• HP Range: 210HP - 435HP
• Engine Type: Volvo Penta D4 / D6 turbocharged common-rail marine diesel
• Year Range: Approximately 2003 - 2015

🔌 Function

The housing directs incoming seawater through the removable strainer basket before the water reaches the seawater pump and engine coolers. It also provides the sealed mounting surface for the transparent inspection cover.

⚠️ Common Signs of Failure

• Housing is cracked, warped or corroded
• Hose connections or mounting points are damaged
• Cover threads or sealing surface no longer hold pressure
• Blocked basket restricts cooling-water flow
• Air or seawater leaks occur around the housing

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21457172 → Replaces 3889148, 3809070, 3582986, 3809071 and 3583338
• 3889148 / 3809070 / 3582986 / 3809071 / 3583338 earlier seawater-filter assemblies

OEM / Related Numbers

• 21457172
• VOP21457172
• 21400685 related transparent filter cover
• 3889148
• 3809070
• 3582986
• 3809071
• 3583338

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated