Volvo Penta Turbo Oil Return Sealing Ring 21940615

Volvo Penta Turbo Oil Return Sealing Ring – Part No. 21940615

Part Number: 21940615
Brand: Volvo Penta
Supersedes: 1547255
Replaced By: Current – 21940615 is the active OEM number

Overview

This is a genuine Volvo Penta OEM sealing ring used at the turbocharger oil return pipe connection in Volvo Penta diesel engine assemblies. It provides a reliable seal at the oil return pipe-to-block interface, preventing oil seepage in the turbocharger circuit. As an OEM component, it matches the original material grade, profile, and dimensions required for a proper fit at this sealing point.

System & Diagram Position

Inlet and Exhaust System – Turbocharger Oil Return Circuit. This sealing ring is positioned at the oil return pipe / block connection in the applicable Volvo Penta turbocharger assembly diagram. Confirm the exact diagram position against your engine's parts schematic before ordering.

Compatible Applications

• Volvo Penta D13B-A MP – turbocharger oil return assembly (confirmed diagram reference)
• Volvo Penta D8A1-A MP – turbocharger oil return assembly
• Volvo Penta D13C2-B MP – turbocharger oil return assembly
• Other Volvo Penta heavy-duty diesel engines where the parts diagram calls for part number 21940615 at the turbo oil return sealing point

Serial Number & Fitment Notice

Fitment can vary by engine family, turbocharger arrangement, and serial-number range. Always confirm part number 21940615 against your engine serial number and the correct inlet/exhaust or turbocharger parts diagram before ordering — particularly on engines that may have had prior turbo or oil-line service.

Superseded Part Numbers

Earlier part number 1547255 has been updated to 21940615. Use 21940615 as the current OEM ordering number.

When to Replace

Replace this sealing ring whenever the turbocharger oil return pipe or related connection is opened during service, or when the original ring shows oil seepage, flattening, hardening, distortion, or damage on removal. Reusing a compressed or disturbed sealing ring at this location is not recommended.

Installation Notes

Install on clean, undamaged sealing surfaces. Confirm the ring matches the exact diagram position before assembly. Inspect adjacent O-rings, pipe fittings, and turbo oil-line hardware at the same time to avoid reopening the area for a secondary leak after reassembly.

Parts Desk Insights

This sealing ring is most commonly needed during turbocharger removal, oil return pipe service, or when tracing a minor oil leak at the turbo-to-block connection. The most frequent issue is skipping the ring replacement during adjacent turbo work — it is a low-cost part that is easy to overlook, but a failed seal at this location means reopening the same area. Always replace it any time the oil return pipe connection is disturbed.