842768 Muffler | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta silencer for wet exhaust systems for 89 mm hose. It weighs 5.216 kg and is listed for 46 applications across MD, TMD, AD, D, AQAD and TAMD series engines. Made of reinforced rubber with acid resistant stainless steel end pieces, it silences the exhaust with a minimum of back pressure and acts as an effective water-lock, its large cooling water capacity removing the risk of water siphoning back into a stopped engine. Adjustable mounting brackets ease installation, and the 89 mm size matches elbow coupling 843287.

🚤 Compatibility

• Engine Family: MD, TMD, AD, D, AQAD, TAMD, HS
• HP Range: 40-75 HP

Full model list at the end of this description.

⚙️ Key Features

• 89 mm hose connection
• Reinforced rubber with acid resistant stainless steel end pieces
• Doubles as a water-lock with large cooling water capacity
• Adjustable mounting brackets
• 5.216 kg
• 46 applications across MD, TMD, AD, D, AQAD and TAMD series
• Pairs with 89 mm elbow coupling 843287
• Silences exhaust noise with a minimum of back pressure
• Doubles as an effective water-lock
• B1: 90 mm
• B2: 140 mm
• H: 40 mm
• L1: 370 mm
• L2: 500 mm
• L3: 665 mm
• Diameter a: 89 mm
• Diameter d: 220 mm
• Hose diameter: 89 mm
• Material: reinforced rubber with acid resistant stainless steel end pieces
• Fits: Marine wet exhaust systems, 89 mm hose

🔌 Function

Damps exhaust noise and acts as a water-lock in the wet exhaust system before the gas and water pass to the outlet.

⚠️ Common Signs of Failure

• Exhaust noise noticeably louder than it used to be
• Water pooling or dripping under the silencer body
• Body soft, blistered or cracked at the spigots
• Rumbling or resonance from a broken internal baffle
• Soot staining at the hose joints

🛠️ Service Notes

• Confirm the run is 89 mm hose before ordering, as hose size is what separates the silencer options
• Renew the hoses and use twin clips at each spigot, and use the adjustable brackets so the silencer weight is not hung on the hose
• The acid resistant stainless steel end pieces are chosen for a wet exhaust duty, where the silencer carries seawater as well as exhaust gas

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D2-40, D2-40B, D2-40F, D2-55, D2-55B, D2-55C, D2-55D, D2-55E, D2-55F, D2-50F, D2-75, D2-75B, D2-75C, D2-75F, D2-60F
• Volvo Penta TAMD31M, TAMD31A, TAMD31B, TAMD31D
• Volvo Penta TAMD41B, TAMD41D, TAMD41P, TAMD41A
• Volvo Penta AD31D, AD31D-A, AD31XD
• Volvo Penta TMD31A, TMD31B, TMD31D
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta TMD41A, TMD41B, TMD41D
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta AD30A
• Volvo Penta AD41D
• Volvo Penta AQAD30A
• Volvo Penta D41D
• Volvo Penta HS1A
• Volvo Penta MD30A
• Volvo Penta MD40A
• Volvo Penta TAMD30A
• Volvo Penta TMD30A