Elring 820.122 Engine Cylinder Head Bolt Set

Elring Cylinder Head Bolt Set for Mercedes-Benz

Elring 820.122 is an engine cylinder head bolt set built for Mercedes-Benz diesel applications that require M10 female star head bolts. With 26 bolts and two thread lengths, this set supports proper cylinder head fastening on select 1986-1995 Mercedes-Benz models, including 300D, 300SDL, 300TD, 300SD, 350SD, 350SDL, and S350.

Key Features

• Brand: Elring
• Part number: 820.122
• Engine cylinder head bolt set for Mercedes-Benz diesel engines
• Female star bolt head / nut design
• Thread size 1: M10x1.5x80
• Thread size 2: M10x1.5x102
• Spanner size: X - M 10
• Cross-reference: Anchor 10234

Detailed Description

This Elring cylinder head bolt set is specified for Mercedes-Benz engines that use M10 thread hardware with a 1.5 mm pitch and female star drive. The bolt design and thread lengths are matched to the listed diesel applications, helping maintain correct clamping characteristics during cylinder head service. If you are sourcing Elring 820.122 for a Mercedes-Benz 300D, 300SDL, or S350 repair, this part number provides a direct reference for the correct engine hardware.

This part cross-references Anchor 10234 for the same application.

Vehicle Fitment

• Fits 1994-1995 Mercedes-Benz S350, N/A. Notes: Thread Size: M10; Thread Pitch: 1.5mm; Bolt Head Nut Design: Female Star
• Fits 1992-1993 Mercedes-Benz 300SD, N/A
• Fits 1991 Mercedes-Benz 350SD, N/A
• Fits 1990-1991 Mercedes-Benz 350SDL, N/A
• Fits 1987 Mercedes-Benz 300D, N/A
• Fits 1986-1987 Mercedes-Benz 300SDL, N/A
• Fits 1987 Mercedes-Benz 300TD, N/A

Installation Notes

Verify the engine’s bolt head style, thread size, and thread pitch before installation. Confirm that the cylinder head and block surfaces are clean and flat, and follow the vehicle service manual for tightening sequence and torque procedure. Because this is a cylinder head fastener application, accurate torque steps and angle tightening are critical for proper assembly on Mercedes-Benz diesel engines.

Quality Assurance

Elring is a recognized OE-focused engine sealing and hardware brand, and this part is built to match the listed Mercedes-Benz applications by thread size, drive type, and bolt length specification. Part number 820.122 is intended for direct replacement use where the original engine hardware matches the fitment data.