Febi 10172 Accessory Drive Belt Tensioner Assembly

Accessory Drive Belt Tensioner for Mercedes-Benz

Febi 10172 is an automatic accessory drive belt tensioner assembly built with an aluminium housing and a 103.5 mm width specification. It is listed for auxiliary belt applications on select Mercedes-Benz models, including S-Class, E-Class, and SL-Class vehicles from the early-to-late 1990s.

Key Features

• Automatic accessory drive belt tensioner assembly
• Aluminium housing for the tensioner body
• 103.5 mm width specification
• Direct-fit application for auxiliary belt systems
• Febi part number 10172

Detailed Description

Febi 10172 is an accessory drive belt tensioner assembly for Mercedes-Benz auxiliary belt systems. The automatic operating mode helps maintain proper belt tension in the accessory drive belt system, while the aluminium housing supports a durable, OE-style replacement format. This part number 10172 is listed for applications on Mercedes-Benz S420, S500, E420, SL500, E500, and 500SEC models across the 1993-1999 model years.

This part cross-references Mercedes-Benz OE numbers 119 200 10 70 and 119 200 11 70 for the same application.

Vehicle Fitment

• Fits 1999 Mercedes-Benz S420, N/A — Additional information: for auxiliary belt; Width 1 (mm): 103.5; Operating Mode: automatic; Housing Material: Aluminium
• Fits 1994-1999 Mercedes-Benz S500, N/A — Additional information: for auxiliary belt; Width 1 (mm): 103.5; Operating Mode: automatic; Housing Material: Aluminium
• Fits 1997 Mercedes-Benz E420, N/A — Additional information: for auxiliary belt; Width 1 (mm): 103.5; Operating Mode: automatic; Housing Material: Aluminium
• Fits 1994-1995 Mercedes-Benz E420, N/A — Additional information: for auxiliary belt; Width 1 (mm): 103.5; Operating Mode: automatic; Housing Material: Aluminium
• Fits 1994-1995 Mercedes-Benz SL500, N/A — Additional information: for auxiliary belt; Width 1 (mm): 103.5; Operating Mode: automatic; Housing Material: Aluminium
• Fits 1994 Mercedes-Benz E500, N/A — Additional information: for auxiliary belt; Width 1 (mm): 103.5; Operating Mode: automatic; Housing Material: Aluminium
• Fits 1993 Mercedes-Benz 500SEC, N/A — Additional information: for auxiliary belt; Width 1 (mm): 103.5; Operating Mode: automatic; Housing Material: Aluminium

Common Replacement Reasons

• Accessory belt tension loss
• Belt squeal from worn tensioner components
• Uneven belt tracking in the auxiliary drive system
• Visible wear or damage to the tensioner housing
• Restoration of proper belt tension on Mercedes-Benz S420, S500, and E420 applications

Installation Notes

Verify the 103.5 mm width specification and confirm OE cross-reference numbers before installation. This tensioner is for auxiliary belt applications, so inspect the belt, pulleys, and surrounding drive components at the same time to ensure the system operates correctly after replacement. Match the application to the exact Mercedes-Benz model and year listed above.

Quality Assurance

Febi is an established aftermarket brand known for replacement parts used in European vehicle applications. Febi 10172 is specified with an aluminium housing and automatic operating mode to match the listed Mercedes-Benz auxiliary belt applications.