22003521 Exhaust Pipe | Genuine Volvo Penta Part

🔧 Product Description

Four-inch exhaust pipe for TAD570VE-TAD572VE emissions-controlled engines. The pipe includes the required flange, V-clamp and sensor-boss geometry for the selected aftertreatment arrangement.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD570-72VE
• Volvo Penta TAD570-71VE-B
• Volvo Penta TAD870-73VE

• Engine Family: TAD

⚙️ Key Features

• Factory diameter, flange and sensor-boss arrangement
• Designed for high exhaust temperature and vibration
• Correct support-bracket and V-clamp interfaces
• Maintains exhaust-system alignment
• Emissions-component compatibility is configuration controlled

🔌 Function

Carries exhaust gas from the engine or turbocharger into the downstream exhaust and emissions system.

⚠️ Common Signs of Failure

• Exhaust leakage or soot staining
• Cracking around welds, bosses or brackets
• Loose V-clamps or flange fasteners
• Excessive heat in the engine compartment
• Noise, fumes or emissions-system faults

🛠️ 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 / Related Numbers

• 22304138 - 3.5-inch exhaust-pipe alternative
• 20828464 - V-clamps
• 21472836 - V-clamps
• 25381839 - 4-inch exhaust hose, not UREA resistant
• 22195262 → 22338252 - related pipe
• 22086608 → 22344991 - related pipe
• 22051369 → 22344993 - related pipe
• 22344961 - complete related pipe
• 22233336 - flange
• 479979 - plug
• 21588074 - gasket
• 21992281 - support bracket
• 21508792 - flanges
• 21508790 - flanges
• 21653609 - NOx-sensor boss
• 22349354 - boss
• 22544674 - elbow
• 22338248 - reducer flange

📦 Condition

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