Elring 902.860 Engine Crankshaft Seal - Front

Elring 902.860 Crankshaft Seal

Elring 902.860 is an engine crankshaft seal built for BMW applications that require a precise radial shaft seal at the timing end. It uses PTFE and ACM materials, a 65.0 mm inside diameter, 79.0 mm outside diameter, and 10.0 mm thickness for accurate sealing performance.

Compatible With BMW 220i, 320i, M2, X3, X5, Z4, and other listed models, this seal is specified with a dust lip and right-hand twist swirl type for the correct OE-style sealing orientation.

Key Features

• Elring engine crankshaft seal, part number 902.860
• PTFE (polytetrafluoroethylene) and ACM (polyacrylate rubber) construction
• 65.0 mm inside diameter, 79.0 mm outside diameter, 10.0 mm thickness
• Radial shaft seal design: ASW
• Swirl type: RD, right-hand twist
• Includes dust lip for added sealing protection
• Fits a wide range of BMW 2 Series, 3 Series, 4 Series, 5 Series, 6 Series, 7 Series, X models, Z4, M2, M3, and M4 applications

Detailed Description

This crankshaft seal is used at the engine timing end on many BMW engines to retain oil and keep contaminants out of the crankcase area. The PTFE sealing material supports low-friction contact at the shaft, while the ACM rubber component adds durability in engine environments. Elring 902.860 is a direct-fit sealing solution for many BMW 125i, 328i, 335i, 640i, 740i, X1, X3, X5, and X6 applications, with fitment varying by year and engine configuration.

This part cross-references MAHLE 68036 and National 710785 for the same application. Elring 902.860 is also listed against OE and aftermarket numbers including BMW 11 11 7 593 353 and Victor Reinz 81-10378-00.

What It Helps Fix

• Engine oil seepage at the crankshaft sealing surface
• Oil leaks near the timing end of the engine
• Contamination entering the crankshaft seal area
• Seal wear from age, heat, and shaft rotation
• Improper sealing after service on BMW engine front covers or timing components

Installation Notes

Observe the mounting information for the specific BMW application before installation. Confirm the seal dimensions, swirl direction, and position match the engine being serviced. Clean the shaft and housing thoroughly, and install the seal squarely to avoid lip damage or premature leakage. Several listings note timing-end placement, so verify the exact engine location before ordering.

Quality Assurance

Elring is a recognized sealing-system manufacturer, and this crankshaft seal is built to match the dimensional and material requirements shown in the catalog data for the listed BMW applications.

Fits 2006-2021 BMW 220i, 228i xDrive Gran Coupe, 320i, 420i, M2, M4, X3, X5, Z4, and additional listed BMW models, with application-specific notes and timing-end coverage where shown.