21307714 Exhaust Valve | Genuine Volvo Penta Part

🔧 Product Description

A heat-resistant exhaust valve used in selected Volvo Penta MD2040 and D2 four-cylinder marine diesel cylinder heads. Four exhaust valves are normally required per engine.

🚤 Compatibility

Typically suits:

• Volvo Penta D2-75F
• Volvo Penta D2-60F

• Engine Family: D
• HP Range: 60-75 HP

⚙️ Key Features

• Replaces or cross-references earlier valve numbers
• High-temperature valve-head and stem construction
• Four normally required per four-cylinder engine
• Engine type: Four-cylinder marine diesel

🔌 Function

Opens to release combustion gas from the cylinder into the exhaust manifold.

⚠️ Common Signs of Failure

• Low cylinder compression
• Rough running or misfire
• Burnt or cracked valve face
• Excessive valve-stem clearance
• Exhaust leakage past the valve seat

🛠️ Service Notes

• Keep valves in strict order as they come out so anything reused goes back in its own guide and seat, and measure stem, guide and seat wear against the figures in the workshop manual for your engine before deciding what to reuse
• Check a new valve for straightness and check that the seat face is clean and unmarked before it goes anywhere near the head
• Clean carbon from the port and the seat, then grind or lap the valve to its seat and confirm a continuous, even seating band right round
• Renew the valve stem seals, cotters and any spring hardware the manual calls for while the head is apart — the cost is trivial against a second strip-down
• Check valve recession or protrusion relative to the head face, and clearance to the piston, against the manual figures for your engine before final assembly, then set the valve clearances to the manual figures once the head is back on and recheck them after the first running period

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21307714 → Supersedes 21186282 → Supersedes 3580479

OEM / Related Numbers

• 21186282 earlier number superseded by this part
• 3580479 earlier number superseded by this part
• 21186281 - inlet valve
• 3580305 - valve-stem seal
• 3580964 - valve spring
• 3580307 - spring washer
• 3580308 - valve cotters
• 3809624 - valve seat
• 21250646 - valve cap

Aftermarket / Verified Equivalents

• Recmar: RM21186282
• Crom Marine: 112299

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging