21840589 Exhaust Pipe | Genuine Volvo Penta Part

🔧 Product Description

Engine exhaust pipe used on D13B-C MP installations through the specified production serial break. A later pipe reference, 23006312, is used on the subsequent production arrangement.

🚤 Compatibility

Typically suits:

• Volvo Penta D13C2-B MP
• Volvo Penta D13C2-A MP
• Volvo Penta D13C4-A MP
• Volvo Penta D13B-G MP
• Volvo Penta D13B-L MP
• Volvo Penta D13B-K MP
• Volvo Penta D13B-C MP
• Volvo Penta D13C6-A MP
• Volvo Penta D13C5-A MP

• Engine Family: D
• Serial Range: SN-2013696000

⚙️ Key Features

• Factory exhaust routing
• D13B-C MP application
• Used through serial 2013696000
• High-temperature exhaust construction
• Later-production related pipe 23006312
• Engine type: 13-litre 6-cylinder turbocharged marine diesel

🔌 Function

Routes exhaust gas from the engine/turbocharger connection into the vessel exhaust installation.

⚠️ Common Signs of Failure

• Soot tracking at a joint or crack
• Exhaust smell in the machinery space
• Heat distortion or corrosion
• Loose flange or clamp connection
• Excessive back pressure from internal restriction

🛠️ Service Notes

• Fit new gaskets and seals at every joint you disturb; exhaust gaskets take a set once they have been heat-cycled and will not seal a second time
• Clean the flange faces back to bare, flat metal and check them for distortion and pitting — a warped face will blow out a new gasket however hard it is pulled up
• Renew corroded studs and nuts, use a high-temperature anti-seize on the threads, and tighten in the sequence and to the figures in the workshop manual for your engine; recheck once the engine has been run up to temperature and allowed to cool, because the joint relaxes over the first few heat cycles
• Support the pipe on its own mountings so nothing hangs on the flange and no hose pull is taken through the joint, and keep the specified clearance to hoses, wiring and glassfibre
• On water-cooled sections, check the cooling passages are clear and the water connections sound before running — a restricted jacket will cook the pipe and the hose behind it

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21840589 → Supersedes 21314127

OEM / Related Numbers

• 21314127 earlier number superseded by this part
• 23006312 related reference

📦 Condition

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