National 710190 Engine Crankshaft Seal - Front

National 710190 Engine Crankshaft Seal

National 710190 is a metric engine crankshaft oil seal built for front crankshaft sealing on select Volvo applications. It uses a silicone sealing material and a clockwise-spiral lip design to help maintain a consistent seal at the shaft interface.

Key Features

• Engine crankshaft seal / oil seal for front position applications
• Metric dimensions: 52.000 mm shaft diameter, 68.430 mm outside diameter, 10.000 mm width
• Silicone construction for sealing performance in engine environments
• Clockwise-spiral lip design for controlled sealing action
• National Series 710100, Type 32
• Cross-reference part numbers include 15-09306 and KS20466 for the same application

Product Details

National 710190 is engineered as a front engine crankshaft seal for Volvo 240, 740, 760, 780, 745, DL, GLE, and 940 applications listed below. The seal measures 2.047 inches (52.000 mm) inside diameter, 2.694 inches (68.430 mm) outside diameter, and 0.394 inches (10.000 mm) width, with a housing bore of 2.677 inches (68.000 mm). These dimensions support accurate fitment in the crankshaft seal bore and around the shaft surface.

National has focused on sealing solutions for more than 75 years, and this part reflects that experience with a silicone sealing design intended for modern engine service demands. For Volvo front crankshaft seal replacement, National 710190 provides the dimensional accuracy and sealing profile needed for maintenance on older rear-wheel-drive platforms.

Vehicle Fitment

• Fits 1991-1994 Volvo 940, front
• Fits 1990-1993 Volvo 240, front
• Fits 1985-1992 Volvo 740, front
• Fits 1989-1991 Volvo 780, front
• Fits 1984-1990 Volvo 760, front
• Fits 1985 Volvo 745, front
• Fits 1984 Volvo DL, front
• Fits 1984 Volvo GLE, front

Common Repair Uses

• Front crankshaft oil leakage at the engine seal area
• Oil seepage around the crankshaft snout
• Seal wear from age, heat, and mileage
• Loss of sealing integrity during timing or front engine service
• Replacement of a hardened or damaged crankshaft seal

Installation Notes and Tips

Confirm shaft diameter, housing bore, and seal orientation before installation. Clean the sealing surface thoroughly and inspect the crankshaft snout for grooves or wear that could affect sealing. Proper alignment during installation is important for a front crankshaft seal, especially on Volvo 240, 740, 760, 780, and 940 engines where access and seal depth must be set accurately.

Quality Assurance

National is a long-established sealing brand known for engine sealing components and dimensional consistency. Part number 710190 is built to match the listed metric specifications and fitment data for the confirmed Volvo front applications.