Elring 843.670 Engine Crankshaft Seal

Elring Crankshaft Seal for Porsche 911

Elring part number 843.670 is an engine crankshaft seal built with PTFE and ACM materials for controlled sealing at the crankshaft. It features a 30.0 mm inside diameter, 50.0 mm outside diameter, 10.0 mm thickness, and a dust lip to help manage contamination at the seal area.

Compatible with Porsche 911 applications across multiple model years, including front-position fitments and later 911 applications with the specified dimensions and right-hand twist design. Elring 843.670 is a direct-fit sealing component for Porsche 911 engine service where precise shaft sealing is required.

Key Features

• PTFE (polytetrafluoroethylene) and ACM (polyacrylate rubber) construction
• 30.0 mm inside diameter, 50.0 mm outside diameter, 10.0 mm thickness
• Dust lip helps reduce contamination at the sealing edge
• Radial shaft seal design: AW/CS VL
• Swirl type: RD, right-hand twist
• Elring 843.670 for Porsche 911 engine sealing service

Detailed Description

This Elring crankshaft seal is specified for Porsche 911 fitments and is engineered around the listed dimensions and seal profile. The PTFE/ACM material combination supports low-friction sealing performance, while the AW/CS VL radial shaft seal design and right-hand twist swirl type match the application requirements shown in the fitment data. Use Elring 843.670 when replacing a worn crankshaft seal on Porsche 911 models that call for this exact size and configuration.

This part cross-references Porsche 997 102 265 91 for the same application.

What It Helps Address

• Engine oil leakage at the crankshaft seal area
• Seepage caused by a worn or hardened seal lip
• Contamination entering the seal zone through a damaged dust lip
• Improper sealing from an incorrect diameter or seal profile
• Service replacement on Porsche 911 front or engine-position applications

Installation Notes and Tips

• Observe the mounting information listed for the application before installation.
• Confirm the seal dimensions match the original part: 30.0 mm ID, 50.0 mm OD, 10.0 mm thickness.
• Verify the swirl direction and radial shaft seal design before fitting.
• Inspect the crankshaft sealing surface for wear, scoring, or contamination before installing the new seal.
• Clean the housing and shaft area thoroughly to support proper seating and sealing.

Quality Assurance

Elring is a recognized engine sealing brand, and this crankshaft seal is built to the listed OE-style dimensions and material specification for Porsche 911 service. Part number 843.670 is intended for accurate replacement where the original seal profile and fitment match the catalog data.