Elring 312.010 Engine Crankshaft Seal - Front

Engine Crankshaft Seal for Mercedes-Benz Diesel

Elring 312.010 is an engine crankshaft seal built for select Mercedes-Benz diesel applications. It uses FPM (fluoride rubber) and ACM (polyacrylate rubber) for sealing performance, with a dust lip to help keep contaminants away from the sealing area.

Compatible with Mercedes-Benz 300D, 300SD, and 300TD applications across the listed model years, this seal is specified with a 45.0 mm inside diameter, 74.5 mm outside diameter, and 13.6 mm thickness. Elring 312.010 is also cross-referenced to Four Seasons 76173 for the same application.

Key Features

• Engine crankshaft seal for select Mercedes-Benz diesel engines
• FPM (fluoride rubber) and ACM (polyacrylate rubber) construction
• 45.0 mm inside diameter, 74.5 mm outside diameter, 13.6 mm thickness
• Dust lip helps reduce contamination at the sealing surface
• Radial shaft seal design: ASW BD
• Swirl type: RD, right-hand twist

Detailed Description

This Elring crankshaft seal is engineered for Mercedes-Benz 300D, 300SD, and 300TD diesel engines where correct shaft sealing dimensions and seal profile are critical. The FPM/ACM material blend is selected for durability in engine sealing environments, while the dust lip adds an extra barrier against road debris and grime. Elring 312.010 is a direct-fit sealing component for the listed front and timing-end applications, depending on vehicle configuration.

Fits 1975 Mercedes-Benz 300D, front. Fits 1976 Mercedes-Benz 300D, timing end. Fits 1977-1981 Mercedes-Benz 300D, N/A. Fits 1982 Mercedes-Benz 300D, timing end. Fits 1983-1985 Mercedes-Benz 300D, N/A. Fits 1978-1982 Mercedes-Benz 300SD, front. Fits 1983-1985 Mercedes-Benz 300SD, N/A. Fits 1979-1985 Mercedes-Benz 300TD, N/A.

What It Helps Address

• Engine oil leakage at the crankshaft sealing point
• Contamination entering the seal area from dust and debris
• Wear-related sealing loss at the front or timing-end crankshaft location
• Incorrect seal sizing during crankshaft seal replacement
• Service needs on Mercedes-Benz 300D, 300SD, and 300TD diesel engines

Installation Notes and Tips

Verify the seal dimensions, swirl direction, and installation position before installation. The listed applications include both front and timing-end configurations, so confirm the exact engine location on the vehicle before ordering or fitting. Clean the sealing surface thoroughly and inspect the crankshaft for wear or scoring before installing the new seal.

Quality Assurance

Elring is a recognized OE-focused sealing brand, and this part is built to the stated dimensions and material specification for the listed Mercedes-Benz diesel applications. Part number 312.010 should be matched to the vehicle’s seal location and dimensions before installation.