3852865 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta o-ring supplied among the contents of the lower gearcase seal kit, from the Marine Propulsion group, listed for 23 applications across the XDP, TSK and SX families.

🚤 Compatibility

• Engine Family: XDP, TSK, SX

Full model list at the end of this description.

⚙️ Key Features

• Contents of the lower gearcase seal kit
• 23 applications across XDP, TSK and SX families
• Published weight unusable as an identifier

📋 Kit Contents

• Contents of lower gearcase seal kit

🔌 Function

Seals a static joint in the lower gearcase, keeping gear oil in and water out.

⚠️ Common Signs of Failure

• Milky or emulsified gear oil on the dipstick
• Oil weeping from the gearcase joint
• O-ring flattened, nicked or hardened on removal
• Gear oil level dropping between services

🛠️ Service Notes

• Water in the gearcase means pressure and vacuum testing the leg before it is put back into service
• O-ring 3852866 at 0.005 kg is the far wider-fitting gearcase seal kit item, so check which kit you are working from
• Order by part number, as the published weight gives no useful check

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta SX-RT2, SX-S, SX-ST, SX-C, SX-C1, SX-C2, SX-CT, SX-CT1, SX-CT2, SX-M, SX-M1, SX-MTD, SX-MTD3, SX-RT1
• Volvo Penta TSK XXP-A, TSK XXP-ALT, TSK XXP-D3, TSK X-B, TSK X-BLT, TSK XHP-B, TSK XHP-BLT
• Volvo Penta XDP-B, XDP-D3