Volvo Penta Exhaust Elbow 21751640
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Volvo Penta 21751640 is a genuine OEM exhaust pipe elbow / wet exhaust elbow used in selected Volvo Penta marine diesel exhaust systems. Current parts listings identify 21751640 specifically as an Exhaust Pipe Elbow, and multiple market listings consistently associate this part number with Volvo Penta D4 and D6 applications.
This elbow is part of the wet exhaust path, routing exhaust flow out of the engine while integrating with the cooling-water side of the exhaust assembly. In marine diesel service, this is a critical component because exhaust elbows operate in a hot, corrosive environment where heat, moisture, carbon, and salt exposure all work against long-term durability. Volvo Penta also emphasizes using genuine parts for correct fit, performance, and durability in marine maintenance.
Key Features
- Genuine Volvo Penta OEM exhaust elbow
- Part number: 21751640
- Official parts description: Exhaust Pipe Elbow
- Used in selected Volvo Penta wet exhaust configurations
- Commonly associated with D4 / D6 marine diesel applications in current market references
Engine Compatibility
Available current references consistently connect Volvo Penta 21751640 with selected D4 and D6 exhaust applications. Because Volvo Penta fitment can vary by engine version, exhaust configuration, serial break, and related hardware, this part should be matched by engine serial number and assembly context before ordering.
Serial Number Fitment Notice
Please confirm fitment by engine serial number before ordering. Volvo Penta's official parts guidance directs owners and technicians to identify the exact engine, shield, or drive to locate the correct replacement parts.
When This Part Needs Replacement
Replace this exhaust elbow when:
- corrosion or scaling is present inside the water jacket or exhaust passage
- there is exhaust leakage, water leakage, or visible cracking
- carbon buildup is restricting flow
- the elbow has been removed during major exhaust service and inspection shows deterioration
- the surrounding exhaust connection hardware has already been serviced and the elbow no longer meets reuse condition
Installation Notes
- Confirm the exact application by engine serial number first.
- Inspect the elbow, mating surfaces, clamps, connector pieces, and related hoses together during service.
- Check for internal corrosion and carbon restriction before reassembly.
- Follow Volvo Penta service procedures and torque/clamp requirements for the exact engine package.
- Use genuine sealing and connection components where required for the exhaust assembly.
Alternate/Superseded Part Numbers
Current reviewed sources consistently identify this part as 21751640. Some market listings also reference this number alongside related D4/D6 exhaust-elbow variants or casting associations, but the solid confirmed catalog identifier here is 21751640.
Parts Desk Insight
On Volvo Penta diesel engines, exhaust elbows are one of the smarter places to stay proactive. They live in a harsh mix of heat, cooling water, and soot, so even when the outside still looks usable, internal buildup or jacket corrosion can already be affecting reliability. When servicing one elbow, it is usually worth checking the connector, gasket surfaces, clamps, and adjoining hose sections at the same time.
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Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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