Elring 843.650 Differential Seal - Rear

Elring Differential Seal for Porsche 911

Elring 843.650 is a differential seal built for rear driveline sealing on select Porsche 911 applications. It uses ACM (polyacrylate) material with a dust lip to help maintain a clean sealing surface around the axle shaft area.

• Part number: 843.650
• Material: ACM (polyacrylate)
• Inside diameter: 48.0 mm
• Outside diameter: 68.0 mm
• Height: 10 mm
• Radial shaft seal design: AS
• Dust cover: with dust lip

Sealing Details

This Elring differential seal is specified with a 48.0 mm inner diameter, 68.0 mm outer diameter, and 10 mm height for precise axle and differential sealing dimensions. The AS radial shaft seal design and integrated dust lip support sealing performance in rear driveline service on Porsche 911 models. Part number 843.650 is also listed as a cross-reference to 999 113 347 40 for the same application.

Vehicle Fitment

• Fits 1998 Porsche 911, Rear.
• Fits 1990 Porsche 911, Rear.
• Fits 1991-1997 Porsche 911, N/A. Notes: Diameter 10 mm; Inner Diameter 48 mm; Outer Diameter 68 mm; Dust Cover with dust lip.
• Fits 1984-1989 Porsche 911, N/A. Notes: Diameter 10 mm; Inner Diameter 48 mm; Outer Diameter 68 mm; Dust Cover with dust lip.
• Fits 1981-1983 Porsche 911, N/A. Notes: Diameter 10 mm; Inner Diameter 48 mm; Outer Diameter 68 mm; Dust Cover with dust lip; From 08/1986.

Common Repair Uses

• Rear differential oil seepage at the axle seal area
• Fluid loss around the differential output shaft
• Contamination entering the sealing surface through worn dust protection
• Service replacement for aged or hardened seal material
• Restoring proper sealing on Porsche 911 rear driveline assemblies

Installation Notes

Verify shaft diameter, seal OD, and installation depth before pressing the seal into place. Inspect the shaft surface for wear or scoring, and replace any damaged mating components before assembly. Clean the housing bore thoroughly so the seal seats evenly and the dust lip can contact the shaft correctly.

Quality Assurance

Elring is a recognized sealing-system manufacturer, and this differential seal is built to the listed dimensions and material specification for the confirmed Porsche 911 applications above.