23879231 Exhaust Riser | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta exhaust riser weighing 10.89 kg, listed for 13 D series engine applications and superseding part number 78467551. Six risers appear in this slice between 7.2 and 14.0 kg, so order strictly by part number.

🚤 Compatibility

Typically suits:

• Volvo Penta D13C2-B MP
• Volvo Penta D13C2-A MP
• Volvo Penta D13C4-A MP
• Volvo Penta D13B-A MP
• Volvo Penta D13B-H MP
• Volvo Penta D13B-G MP
• Volvo Penta D13B-K MP
• Volvo Penta D13C4-B MP
• Volvo Penta D13C6-A MP
• Volvo Penta D13C5-B MP
• Volvo Penta D13C7-B MP
• Volvo Penta D13C8-B MP
• Volvo Penta D13C9-A MP

• Engine Family: D

⚙️ Key Features

• Exhaust riser
• 10.886 kg
• Supersedes 78467551
• Listed for 13 D series engine applications
• One of six risers in this run spanning 7.244 kg to 13.971 kg, so order strictly by part number
• Also supersedes Volvo part number 21485481

🔌 Function

Lifts the exhaust gas above the waterline and introduces cooling water into the gas stream, protecting the downstream hose and keeping water from running back into the engine.

⚠️ Common Signs of Failure

• Rusty water or soot staining at the riser joints
• Steam or a hissing leak from the flange with the engine running
• Rough running or a hydraulic lock after standing, from water tracking back to a cylinder
• Exhaust hose downstream running hot or scorched, showing the water injection is restricted
• Heavy carbon and rust scale choking the bore when the riser is split off

🛠️ Service Notes

• Renew the riser gasket and the exhaust hose clamps at the same time - both are disturbed by the job
• Risers are a wear item on raw water cooled engines; inspect the manifold flange for corrosion before fitting a new one
• The other risers in this run sit close in weight, so confirm the part number against the engine rather than judging by size

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23879231 → Supersedes 78467551 → Supersedes 22193562

OEM / Related Numbers

• 78467551 earlier number superseded by this part

📦 Condition

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