4913 Oil Seals-.500" X .749" X .125"
OIL SEALS-.500" X .749" X .125"-IMS4913>
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OIL SEALS-.500" X .749" X .125"-IMS4913>
2.000" X 2.850" X .375" OIL SEALS-NAT493524>
OIL SEALS-5.000" X 6.5000" X .500"-IMS50148>
Common Applications: Vintage and classic import vehicles (including Fiat 600, 770, 850, and 1100 models), early Triumphs, and various agricultural/industrial equipment. Equivalent / Interchange Part Numbers: Can sometimes cross-reference with National 1077 or Raybestos 550186.Sourcing: Since it is often classified as a New Old Stock (NOS) item or an obsolete factory part, availability relies heavily on specialized parts dealers and liquidation sites.
OIL SEALS-.500" X .999" X .188"-IMS4950>
The reference number 550158 is most commonly associated with Spicer Drivetrain components, such as driveshaft dust caps, yoke seals, or support bearing seals (often under related part numbers like 211158X). Alternatively, if you are looking at standard radial oil seals, it can cross-reference to specific shaft sizes from manufacturers like SKF. To narrow down exactly what you need, it helps to know the application, the equipment or vehicle it is attached to, and whether you are replacing a drive shaft seal, bearing seal, or hydraulic component.
