National 710235 Engine Crankshaft Seal - Rear

National 710235 Rear Engine Crankshaft Seal

National 710235 is a rear engine crankshaft seal built for Subaru and Saab applications that require a precise oil seal at the crankshaft. It uses a silicone sealing material and a counter-clockwise spiral lip design to help maintain sealing performance in demanding engine environments.

Key Features

• Rear engine crankshaft seal / oil seal for select Subaru and Saab vehicles
• Silicone sealing material for durable sealing performance
• Counter-clockwise spiral lip design
• Metric dimensions: 86.000 mm shaft diameter, 103.230 mm outside diameter, 10.000 mm width
• Housing bore: 103.000 mm
• National 710235 and series 710200 identification

Detailed Description

National 710235 is an engine crankshaft seal engineered for the rear position on a wide range of Subaru Legacy, Outback, WRX STI, Impreza, Tribeca, WRX, Forester, B9 Tribeca, Baja, and Saab 9-2X applications. The seal’s 86.000 mm inside diameter and 103.230 mm outside diameter support a precise fit at the crankshaft and housing bore, while the 10.000 mm width helps maintain proper sealing depth. National has supplied sealing solutions for more than 75 years, and this part reflects that focus on modern engine sealing requirements. This part cross-references MAHLE JV1666 for the same application.

Vehicle Fitment

• Fits 1990-2019 Subaru Legacy, rear
• Fits 2000-2019 Subaru Outback, rear
• Fits 2013-2019 Subaru WRX STI, rear
• Fits 1993-2014 Subaru Impreza, rear
• Fits 2008-2014 Subaru Tribeca, rear
• Fits 2013-2014 Subaru WRX, rear
• Fits 1998-2013 Subaru Forester, rear
• Fits 2006-2007 Subaru B9 Tribeca, rear
• Fits 2005-2006 Saab 9-2X, rear
• Fits 2003-2006 Subaru Baja, rear

Common Issues This Seal May Address

• Rear crankshaft oil leakage
• Oil seepage at the engine rear main seal area
• Contamination of the bellhousing or clutch area from engine oil
• Loss of sealing integrity from worn or hardened seal material
• Service replacement for a leaking crankshaft seal on Subaru and Saab rear applications

Installation Notes and Tips

Confirm shaft diameter, housing bore, and seal orientation before installation. The counter-clockwise spiral lip design must be installed in the correct direction for proper sealing performance. Inspect the crankshaft sealing surface for wear, scoring, or contamination, and clean the housing bore thoroughly before pressing the seal into place. Verify the rear-position application against the vehicle’s engine configuration before service.

Quality Assurance

National is a long-established sealing brand with more than 75 years of experience in sealing technology. The 710235 is part of the 710200 series and is built to meet the dimensional and material requirements of modern engine sealing service.