The Fabco 675C-20139 (also listed as 675C20139) is a genuine OEM Viton O-ring, identified by Fabco under the model designation O-RING AS-139-V. Viton is a fluoroelastic material valued in heavy-duty drivetrain applications for its resistance to petroleum-based fluids, heat, and compression set under sustained load. Fabco components are commonly associated with transfer cases, power takeoff units, and steerable drive axles used in heavy-duty truck applications. If you need to confirm this O-ring is the correct seal for your specific assembly, Pro Gear and Transmission carries genuine Fabco parts and can help you verify the application before you order.
Features
Genuine Fabco OEM part, model designation O-RING AS-139-V
Viton (fluoroelastic) material for compatibility with petroleum-based fluids and elevated operating temperatures
Part number 675C-20139 or 675C20139
Applicable to Fabco transfer case, PTO, and steerable drive axle assemblies
Sold by Pro Gear and Transmission - call to confirm the correct application for your unit
