21669952 Muffler | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta exhaust muffler used in an industrial diesel exhaust system requiring part number 21669952. It reduces exhaust pressure pulsation and noise while maintaining the specified flow capacity. Mufflers 21669944 and 21669952 are separately catalogued and should be treated as position-, orientation- or rating-specific.

⚙️ Key Features

• Genuine Volvo Penta industrial exhaust muffler
• Position-specific inlet, outlet and mounting arrangement
• High-temperature heavy-duty construction
• Designed for controlled exhaust back pressure
• Direct replacement for the exact original muffler
• Engine type: Turbocharged Volvo Penta industrial or generator diesel

🔌 Function

Attenuates exhaust noise and pulsation without creating excessive restriction.

⚠️ Common Signs of Failure

• Increasing exhaust noise
• Soot leakage at seams or connections
• Internal baffle rattling
• Loss of power from excessive back pressure
• Cracking, corrosion or heat distortion

🛠️ Service Notes

• Carry the muffler on its own mountings so that its load is taken by the structure and not by the exhaust hose, pipework or the turbocharger outlet
• Fit it the right way round and to the correct fall — these units are directional, and the run must let water drain away and never allow it to run back towards the engine
• Use two corrosion-resistant clamps on each wet exhaust hose joint, staggered so the screw housings are not in line, and check the hose ends are clean, sound and pushed fully home over the spigot
• Check the whole exhaust run and its hangers while the muffler is out — old soot, water staining or a sagging hose downstream tells you why the last one failed
• Where a drain plug is fitted, use it to drain the unit for winter layup, and check for leaks and unusual noise once the engine has been run and the system is hot

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21669952 → Supersedes 21140051

OEM / Related Numbers

• 21140051 earlier number superseded by this part
• 21669944 - separately configured muffler

Aftermarket / Verified Equivalents

• DINEX: 80485
• DINEX: 82420
• AUGER: 95472
• DT Spare Parts: 2.14956

📦 Condition

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