155*185*13; suitable for Scania (Sweden); Part Nos.: 1786563, 1520998, 1457008; CORTECO Part Nos.: 19037206B, 82037206; Elring Part No.: 227.290; VICTOR REINZ Part No.: 81-42912-00

155*185*13; compatible with Scania (Sweden). Part numbers: 1786563, 1520998, 1457008; CORTECO codes: 19037206B, 82037206; Elring code: 227.290.
Suitable for truck series: Scania P, G, R, S, and T series heavy-duty trucks (commonly used with the classic 9-liter DC09 and 13-liter DC13 engine families).
Suitable for bus/coach series: Scania city buses and coaches, such as Citywide, OmniCity, OmniLink, and K-series chassis.
Functions:
1. Securely seals engine oil (prevents internal leakage): Truck engines contain high-pressure, high-temperature oil used to lubricate the crankshaft and connecting rods. The rear crankshaft oil seal acts as a robust barrier, preventing oil from escaping the rotating crankshaft end into the flywheel housing and transmission assembly.
2. High-performance PTFE material ensures exceptional durability: Part 19037206B utilizes premium PTFE (polytetrafluoroethylene/Teflon) combined with ACM (acrylate rubber). PTFE offers superior resistance to extreme heat and oil corrosion, as well as a low coefficient of friction, enabling it to withstand the high-heat environments encountered during long-haul trucking over tens of thousands of kilometers.
3. Left-hand return thread design (active oil pumping): A close inspection of the sealing surface reveals a hydrodynamic lip featuring a left-hand twist thread. As the Scania engine rotates clockwise, this thread acts like a "micro-pump," actively directing any oil attempting to seep outward back into the engine, thereby achieving dynamic zero-leakage performance.