Elring 707.340 Engine Crankshaft Seal - Rear

Elring 707.340 Crankshaft Seal

Elring 707.340 is an engine crankshaft seal built for Subaru applications that require a precise radial shaft seal with a 10.0 mm thickness. It uses FPM (fluoride rubber) for sealing performance and includes a dust lip to help protect the sealing edge from contamination.

• Engine crankshaft seal for Subaru fitments
• FPM (fluoride rubber) sealing material
• Inside diameter: 86.0 mm
• Outside diameter: 103.0 mm
• Thickness: 10.0 mm
• Radial shaft seal design: AS
• Swirl type: LD, left-hand twist
• Dust cover: with dust lip

Fitment and Application Details

Compatible with a wide range of Subaru engines and transmission-side applications, including Fits 2015-2021 Subaru WRX, Fits 2013-2019 Subaru WRX STI, Fits 2001-2019 Subaru Legacy, Fits 2000-2019 Subaru Outback, and Fits 1999-2014 Subaru Impreza. Additional coverage includes Fits 2001-2013 Subaru Forester, Fits 2008-2014 Subaru Tribeca, Fits 2003-2006 Subaru Baja, Fits 2005-2006 Saab 9-2X, and select rear or transmission-side positions on earlier Subaru Legacy, Forester, and Impreza models.

This part cross-references MAHLE JV1666 and National 710235 for the same application. Elring 707.340 is also listed with interchange references including Victor Reinz 81-53333-00.

What This Seal Helps Address

• Oil leakage at the crankshaft sealing surface
• Contamination entering the engine through a worn seal area
• Seepage from aging or hardened crankshaft seals
• Seal wear caused by dust and road debris
• Fitment issues when replacing an OE-style Subaru crankshaft seal

Installation Notes and Tips

Verify the seal dimensions before installation: 86.0 mm inside diameter, 103.0 mm outside diameter, and 10.0 mm thickness. Confirm the correct position on the vehicle, especially for rear or transmission-side applications listed for Subaru Legacy, Forester, and Impreza models. Clean the sealing bore and shaft surface thoroughly before installing the seal to avoid premature wear.

Quality Assurance

Elring manufactures sealing components for engine service applications with attention to material selection and dimensional accuracy. The FPM construction and dust lip design support reliable sealing in demanding engine environments.