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Genuine 1129900112 Accessory Drive Belt Idler Pulley BoltOE Quality 60-Day Returns
Part #: 1129900112

Genuine 1129900112 Accessory Drive Belt Idler Pulley Bolt

⚙️ 144 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mercedes-Benz, SLK55 AMG, G500, ML500, R500, C55 AMG, CL500, CLK500, CLK55 AMG, CLS500, E320, E500, S350, S430, S500, S55 AMG, SL500, C240, C320, CLK320, ML350, G55 AMG, SLK320, CLK430, ML320, ML55 AMG, CL55 AMG, E430, E55 AMG, ML430, C280, and C43 AMG
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Overview of Genuine Accessory Drive Belt Idler Pulley Bolt

The Genuine Accessory Drive Belt Idler Pulley Bolt, part number 1129900112, is designed specifically for a range of Mercedes-Benz models. This essential hardware component ensures secure mounting of the idler pulley, maintaining proper tension and alignment of the accessory drive belt system.

  • Compatible with multiple Mercedes-Benz models including C43 AMG, E55 AMG, ML350, and SL500
  • Durable construction for reliable fastening of the idler pulley
  • OEM Genuine part ensuring precise fit and function
  • Part number 1129900112 for accurate identification and replacement
  • Essential for maintaining accessory drive belt system integrity

Product Details and Compatibility

This Genuine idler pulley bolt is engineered to meet the exact specifications required by Mercedes-Benz vehicles such as the C240, CLK500, CLS500, and G55 AMG. The bolt secures the accessory drive belt idler pulley, which plays a critical role in guiding and maintaining tension on the serpentine belt. Proper installation of this bolt helps prevent belt slippage and premature wear, contributing to the overall performance of the engine’s accessory systems.

Applications and Problem Resolution

This accessory drive belt idler pulley bolt is used to address several common issues related to the accessory belt system:

  • Prevents idler pulley loosening that can cause belt misalignment
  • Eliminates noise caused by pulley vibration or movement
  • Helps avoid accessory belt slippage and associated engine performance problems
  • Supports proper tensioning of the serpentine belt to extend belt life
  • Ensures secure mounting to reduce risk of pulley or belt damage

Installation Notes and Tips

When installing the Genuine 1129900112 idler pulley bolt, ensure the following:

  • Use the correct torque specifications as outlined in the Mercedes-Benz service manual
  • Inspect the idler pulley and accessory belt for wear before installation
  • Replace any worn or damaged components to maintain system integrity
  • Verify proper belt alignment and tension after installation

Quality Assurance and Warranty

As a Genuine Mercedes-Benz part, the 1129900112 idler pulley bolt meets strict OEM quality standards for fit, form, and function. This ensures reliable performance and durability consistent with factory specifications. Warranty coverage is subject to Mercedes-Benz terms and conditions, providing confidence in the part’s long-term reliability.

This part fits 144 vehicles. Search below:

YearMakeModelPositionNotes
2009Mercedes-BenzSLK55 AMGN/A
2008Mercedes-BenzG500N/A
2008Mercedes-BenzSLK55 AMGN/A
2007Mercedes-BenzG500N/A
2007Mercedes-BenzML500N/A
2007Mercedes-BenzR500N/A
2007Mercedes-BenzSLK55 AMGN/A
2006Mercedes-BenzC55 AMGN/A
2006Mercedes-BenzCL500N/A
2006Mercedes-BenzCLK500N/A
2006Mercedes-BenzCLK55 AMGN/A
2006Mercedes-BenzCLS500N/A
2006Mercedes-BenzE320N/A
2006Mercedes-BenzE500N/A
2006Mercedes-BenzG500N/A
2006Mercedes-BenzML500N/A
2006Mercedes-BenzR500N/A
2006Mercedes-BenzS350N/A
2006Mercedes-BenzS430N/A
2006Mercedes-BenzS500N/A
2006Mercedes-BenzS55 AMGN/A
2006Mercedes-BenzSL500N/A
2006Mercedes-BenzSLK55 AMGN/A
2005Mercedes-BenzC240N/A
2005Mercedes-BenzC320N/A
2005Mercedes-BenzC55 AMGN/A
2005Mercedes-BenzCL500N/A
2005Mercedes-BenzCLK320N/A
2005Mercedes-BenzCLK500N/A
2005Mercedes-BenzCLK55 AMGN/A
2005Mercedes-BenzE320N/A
2005Mercedes-BenzE500N/A
2005Mercedes-BenzG500N/A
2005Mercedes-BenzML350N/A
2005Mercedes-BenzML500N/A
2005Mercedes-BenzS430N/A
2005Mercedes-BenzS500N/A
2005Mercedes-BenzS55 AMGN/A
2005Mercedes-BenzSL500N/A
2005Mercedes-BenzSLK55 AMGN/A
2004Mercedes-BenzC240N/A
2004Mercedes-BenzC320N/A
2004Mercedes-BenzCL500N/A
2004Mercedes-BenzCLK320N/A
2004Mercedes-BenzCLK500N/A
2004Mercedes-BenzCLK55 AMGN/A
2004Mercedes-BenzE320N/A
2004Mercedes-BenzE500N/A
2004Mercedes-BenzG500N/A
2004Mercedes-BenzG55 AMGN/A
2004Mercedes-BenzML350N/A
2004Mercedes-BenzML500N/A
2004Mercedes-BenzS430N/A
2004Mercedes-BenzS500N/A
2004Mercedes-BenzS55 AMGN/A
2004Mercedes-BenzSL500N/A
2004Mercedes-BenzSLK320N/A
2003Mercedes-BenzC240N/A
2003Mercedes-BenzC320N/A
2003Mercedes-BenzCL500N/A
2003Mercedes-BenzCLK320N/A
2003Mercedes-BenzCLK430N/A
2003Mercedes-BenzCLK500N/A
2003Mercedes-BenzCLK55 AMGN/A
2003Mercedes-BenzE320N/A
2003Mercedes-BenzE500N/A
2003Mercedes-BenzG500N/A
2003Mercedes-BenzG55 AMGN/A
2003Mercedes-BenzML320N/A
2003Mercedes-BenzML350N/A
2003Mercedes-BenzML500N/A
2003Mercedes-BenzML55 AMGN/A
2003Mercedes-BenzS430N/A
2003Mercedes-BenzS500N/A
2003Mercedes-BenzS55 AMGN/A
2003Mercedes-BenzSL500N/A
2003Mercedes-BenzSLK320N/A
2002Mercedes-BenzC240N/A
2002Mercedes-BenzC320N/A
2002Mercedes-BenzCL500N/A
2002Mercedes-BenzCL55 AMGN/A
2002Mercedes-BenzCLK320N/A
2002Mercedes-BenzCLK430N/A
2002Mercedes-BenzCLK55 AMGN/A
2002Mercedes-BenzE320N/A
2002Mercedes-BenzE430N/A
2002Mercedes-BenzE55 AMGN/A
2002Mercedes-BenzG500N/A
2002Mercedes-BenzML320N/A
2002Mercedes-BenzML500N/A
2002Mercedes-BenzML55 AMGN/A
2002Mercedes-BenzS430N/A
2002Mercedes-BenzS500N/A
2002Mercedes-BenzS55 AMGN/A
2002Mercedes-BenzSL500N/A
2002Mercedes-BenzSLK320N/A
2001Mercedes-BenzC240N/A
2001Mercedes-BenzC320N/A
2001Mercedes-BenzCL500N/A
2001Mercedes-BenzCL55 AMGN/A
2001Mercedes-BenzCLK320N/A
2001Mercedes-BenzCLK430N/A
2001Mercedes-BenzCLK55 AMGN/A
2001Mercedes-BenzE320N/A
2001Mercedes-BenzE430N/A
2001Mercedes-BenzE55 AMGN/A
2001Mercedes-BenzML320N/A
2001Mercedes-BenzML430N/A
2001Mercedes-BenzML55 AMGN/A
2001Mercedes-BenzS430N/A
2001Mercedes-BenzS500N/A
2001Mercedes-BenzS55 AMGN/A
2001Mercedes-BenzSL500N/A
2001Mercedes-BenzSLK320N/A
2000Mercedes-BenzC280N/A
2000Mercedes-BenzC43 AMGN/A
2000Mercedes-BenzCL500N/A
2000Mercedes-BenzCLK320N/A
2000Mercedes-BenzCLK430N/A
2000Mercedes-BenzE320N/A
2000Mercedes-BenzE430N/A
2000Mercedes-BenzE55 AMGN/A
2000Mercedes-BenzML320N/A
2000Mercedes-BenzML430N/A
2000Mercedes-BenzML55 AMGN/A
2000Mercedes-BenzS430N/A
2000Mercedes-BenzS500N/A
2000Mercedes-BenzSL500N/A
1999Mercedes-BenzC280N/A
1999Mercedes-BenzC43 AMGN/A
1999Mercedes-BenzCLK320N/A
1999Mercedes-BenzCLK430N/A
1999Mercedes-BenzE320N/A
1999Mercedes-BenzE430N/A
1999Mercedes-BenzE55 AMGN/A
1999Mercedes-BenzML320N/A
1999Mercedes-BenzML430N/A
1999Mercedes-BenzSL500N/A
1998Mercedes-BenzC280N/A
1998Mercedes-BenzC43 AMGN/A
1998Mercedes-BenzCLK320N/A
1998Mercedes-BenzE320N/A
1998Mercedes-BenzE430N/A
1998Mercedes-BenzML320N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.