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Belt Tensioner Assembly

Keeps constant pressure on your serpentine belt to prevent belt slipping
Mfg Part #
1122000970
ECS Part #
ES#2587890
Brand
Litens
78.17
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Product Details

The belt tensioner on your Mercedes-Benz engine plays an important role in the belt drive system, and that role is keeping the accessory belt at a consistent tension to allow for proper operation of the belt driven accessories.

If your belt tensioner is showing symptoms of excessive wear, such as squealing from a slipping belt, a rattling sound from the tensioner mechanism or a grinding sound from a failing bearing, the tensioner needs to be replaced before it fails, and leads to failure of the belt itself.

If you are replacing your accessory belt tensioner, now would be a great time to inspect and replace other components in the belt drive system, such as the idler pulley or the belt, if they are starting to show signs of wear. ECS Tuning carries a full line of belts, tensioners, pulley and the associated hardware you need to keep the belt drive system on your Mercedes-Benz functioning flawlessly.

This Part Fits the Following Vehicles

Make Model Submodel Engine Year Chasis
Mercedes Benz C240 4Matic V6 2.6L 112.916 2003 203.081
Mercedes Benz C240 4Matic V6 2.6L 112.916 2003 203.281
Mercedes Benz C240 4Matic V6 2.6L 112.916 2004 203.081
Mercedes Benz C240 4Matic V6 2.6L 112.916 2004 203.281
Mercedes Benz C240 4Matic V6 2.6L 112.916 2005 203.081
Mercedes Benz C240 4Matic V6 2.6L 112.916 2005 203.281
Mercedes Benz C240 Base V6 2.6L 2001 203.061
Mercedes Benz C240 Base V6 2.6L 112.912 2002 203.061
Mercedes Benz C240 Base V6 2.6L 112.912 2003 203.061
Mercedes Benz C240 Base V6 2.6L 112.912 2003 203.261
Mercedes Benz C240 Base V6 2.6L 112.912 2004 203.061
Mercedes Benz C240 Base V6 2.6L 112.912 2004 203.261
Mercedes Benz C240 Base V6 2.6L 112.912 2005 203.061
Mercedes Benz C240 Base V6 2.6L 112.912 2005 203.261
Mercedes Benz C280 Base V6 2.8L 1998 202.029
Mercedes Benz C280 Base V6 2.8L 112.920 1999 202.029
Mercedes Benz C280 Base V6 2.8L 112.920 2000 202.029
Mercedes Benz C320 4Matic V6 3.2L 2005 203.084
Mercedes Benz C320 4Matic V6 3.2L 112.946 2003 203.084
Mercedes Benz C320 4Matic V6 3.2L 112.946 2003 203.284
Mercedes Benz C320 4Matic V6 3.2L 112.946 2004 203.084
Mercedes Benz C320 4Matic V6 3.2L 112.946 2004 203.284
Mercedes Benz C320 Base V6 3.2L 2001 203.064
Mercedes Benz C320 Base V6 3.2L 2005 203.064
Mercedes Benz C320 Base V6 3.2L 2005 203.764
Mercedes Benz C320 Base V6 3.2L 112.946 2002 203.064
Mercedes Benz C320 Base V6 3.2L 112.946 2002 203.264
Mercedes Benz C320 Base V6 3.2L 112.946 2003 203.064
Mercedes Benz C320 Base V6 3.2L 112.946 2003 203.264
Mercedes Benz C320 Base V6 3.2L 112.946 2003 203.764
Mercedes Benz C320 Base V6 3.2L 112.946 2004 203.064
Mercedes Benz C320 Base V6 3.2L 112.946 2004 203.264
Mercedes Benz C320 Base V6 3.2L 112.946 2004 203.764
Mercedes Benz C43 AMG Base V8 4.3L 1998 202.033
Mercedes Benz C43 AMG Base V8 4.3L 113.944 1999 202.033
Mercedes Benz C43 AMG Base V8 4.3L 113.944 2000 202.033
Mercedes Benz CL500 Base V8 5.0L 2005 215.375
Mercedes Benz CL500 Base V8 5.0L 113.960 2000 215.375
Mercedes Benz CL500 Base V8 5.0L 113.960 2001 215.375
Mercedes Benz CL500 Base V8 5.0L 113.960 2002 215.375
Mercedes Benz CL500 Base V8 5.0L 113.960 2003 215.375
Mercedes Benz CL500 Base V8 5.0L 113.960 2004 215.375
Mercedes Benz CL500 Base V8 5.0L 113.960 2006 215.375
Mercedes Benz CL55 AMG Base V8 5.5L 2001 215.373
Mercedes Benz CL55 AMG Base V8 5.5L 2002 215.373
Mercedes Benz CL55 AMG Base V8 5.5L 2003 215.374
Mercedes Benz CL55 AMG Base V8 5.5L 2004 215.374
Mercedes Benz CL55 AMG Base V8 5.5L 2005 215.374
Mercedes Benz CL55 AMG Base V8 5.5L 113.991 2006 215.374
Mercedes Benz CLK320 Base V6 3.2L 2004 209.365
Mercedes Benz CLK320 Base V6 3.2L 2004 209.465
Mercedes Benz CLK320 Base V6 3.2L 2005 209.365
Mercedes Benz CLK320 Base V6 3.2L 2005 209.465
Mercedes Benz CLK320 Base V6 3.2L 112.940 1998 208.365
Mercedes Benz CLK320 Base V6 3.2L 112.940 1999 208.365
Mercedes Benz CLK320 Base V6 3.2L 112.940 1999 208.465
Mercedes Benz CLK320 Base V6 3.2L 112.940 2000 208.365
Mercedes Benz CLK320 Base V6 3.2L 112.940 2000 208.465
Mercedes Benz CLK320 Base V6 3.2L 112.940 2001 208.365
Mercedes Benz CLK320 Base V6 3.2L 112.940 2001 208.465
Mercedes Benz CLK320 Base V6 3.2L 112.940 2002 208.365
Mercedes Benz CLK320 Base V6 3.2L 112.940 2002 208.465
Mercedes Benz CLK320 Base V6 3.2L 112.940 2003 208.465
Mercedes Benz CLK320 Base V6 3.2L 112.955 2003 209.365
Mercedes Benz CLK430 Base V8 4.3L 113.943 1999 208.370
Mercedes Benz CLK430 Base V8 4.3L 113.943 2000 208.370
Mercedes Benz CLK430 Base V8 4.3L 113.943 2000 208.470
Mercedes Benz CLK430 Base V8 4.3L 113.943 2001 208.370
Mercedes Benz CLK430 Base V8 4.3L 113.943 2001 208.470
Mercedes Benz CLK430 Base V8 4.3L 113.943 2002 208.370
Mercedes Benz CLK430 Base V8 4.3L 113.943 2002 208.470
Mercedes Benz CLK430 Base V8 4.3L 113.943 2003 208.470
Mercedes Benz CLK500 Base V8 5.0L 2003 209.375
Mercedes Benz CLK500 Base V8 5.0L 2004 209.375
Mercedes Benz CLK500 Base V8 5.0L 2004 209.475
Mercedes Benz CLK500 Base V8 5.0L 2005 209.375
Mercedes Benz CLK500 Base V8 5.0L 2005 209.475
Mercedes Benz CLK500 Base V8 5.0L 113.968 2006 209.375
Mercedes Benz CLK500 Base V8 5.0L 113.968 2006 209.475
Mercedes Benz CLK55 AMG Base V8 5.5L 2001 208.374
Mercedes Benz CLK55 AMG Base V8 5.5L 2002 208.374
Mercedes Benz CLK55 AMG Base V8 5.5L 2002 208.474
Mercedes Benz CLK55 AMG Base V8 5.5L 2003 209.376
Mercedes Benz CLK55 AMG Base V8 5.5L 2004 209.376
Mercedes Benz CLK55 AMG Base V8 5.5L 2004 209.476
Mercedes Benz CLK55 AMG Base V8 5.5L 2005 209.376
Mercedes Benz CLK55 AMG Base V8 5.5L 2005 209.476
Mercedes Benz CLK55 AMG Base V8 5.5L 113.987 2006 209.476
Mercedes Benz CLS500 Base V8 5.0L 2006 219.375
Mercedes Benz CLS55 AMG Base V8 5.5L 2006 219.376
Mercedes Benz E320 4Matic V6 3.2L 1998 210.082
Mercedes Benz E320 4Matic V6 3.2L 1998 210.282
Mercedes Benz E320 4Matic V6 3.2L 112.941 1999 210.082
Mercedes Benz E320 4Matic V6 3.2L 112.941 1999 210.282
Mercedes Benz E320 4Matic V6 3.2L 112.941 2000 210.082
Mercedes Benz E320 4Matic V6 3.2L 112.941 2000 210.282
Mercedes Benz E320 4Matic V6 3.2L 112.941 2001 210.082
Mercedes Benz E320 4Matic V6 3.2L 112.941 2001 210.282
Mercedes Benz E320 4Matic V6 3.2L 112.941 2002 210.082
Mercedes Benz E320 4Matic V6 3.2L 112.941 2002 210.282
Mercedes Benz E320 4Matic V6 3.2L 112.941 2003 210.282
Mercedes Benz E320 4Matic V6 3.2L 112.954 2004 211.082
Mercedes Benz E320 4Matic V6 3.2L 112.954 2004 211.282
Mercedes Benz E320 4Matic V6 3.2L 112.954 2005 211.082
Mercedes Benz E320 4Matic V6 3.2L 112.954 2005 211.282
Mercedes Benz E320 Base V6 3.2L 1998 210.065
Mercedes Benz E320 Base V6 3.2L 1998 210.265
Mercedes Benz E320 Base V6 3.2L 112.941 1999 210.065
Mercedes Benz E320 Base V6 3.2L 112.941 1999 210.265
Mercedes Benz E320 Base V6 3.2L 112.941 2000 210.065
Mercedes Benz E320 Base V6 3.2L 112.941 2000 210.265
Mercedes Benz E320 Base V6 3.2L 112.941 2001 210.065
Mercedes Benz E320 Base V6 3.2L 112.941 2001 210.265
Mercedes Benz E320 Base V6 3.2L 112.941 2002 210.065
Mercedes Benz E320 Base V6 3.2L 112.941 2002 210.265
Mercedes Benz E320 Base V6 3.2L 112.941 2003 210.265
Mercedes Benz E320 Base V6 3.2L 112.941 2003 211.065
Mercedes Benz E320 Base V6 3.2L 112.949 2003 210.265
Mercedes Benz E320 Base V6 3.2L 112.949 2003 211.065
Mercedes Benz E320 Base V6 3.2L 112.949 2004 211.065
Mercedes Benz E320 Base V6 3.2L 112.949 2004 211.265
Mercedes Benz E320 Base V6 3.2L 112.949 2005 211.065
Mercedes Benz E320 Base V6 3.2L 112.949 2005 211.265
Mercedes Benz E430 4Matic V8 4.3L 113.940 2000 210.083
Mercedes Benz E430 4Matic V8 4.3L 113.940 2001 210.083
Mercedes Benz E430 4Matic V8 4.3L 113.940 2002 210.083
Mercedes Benz E430 Base V8 4.3L 113.940 1998 210.070
Mercedes Benz E430 Base V8 4.3L 113.940 1999 210.070
Mercedes Benz E430 Base V8 4.3L 113.940 2000 210.070
Mercedes Benz E430 Base V8 4.3L 113.940 2001 210.070
Mercedes Benz E430 Base V8 4.3L 113.940 2002 210.070
Mercedes Benz E500 4Matic V8 5.0L 113.969 2004 211.083
Mercedes Benz E500 4Matic V8 5.0L 113.969 2004 211.283
Mercedes Benz E500 4Matic V8 5.0L 113.969 2005 211.083
Mercedes Benz E500 4Matic V8 5.0L 113.969 2005 211.283
Mercedes Benz E500 4Matic V8 5.0L 113.969 2006 211.083
Mercedes Benz E500 4Matic V8 5.0L 113.969 2006 211.283
Mercedes Benz E500 Base V8 5.0L 2003 211.070
Mercedes Benz E500 Base V8 5.0L 2004 211.070
Mercedes Benz E500 Base V8 5.0L 2005 211.070
Mercedes Benz E500 Base V8 5.0L 113.967 2006 211.070
Mercedes Benz E55 AMG Base V8 5.5L 1999 210.074
Mercedes Benz E55 AMG Base V8 5.5L 2000 210.074
Mercedes Benz E55 AMG Base V8 5.5L 2001 210.074
Mercedes Benz E55 AMG Base V8 5.5L 2002 210.074
Mercedes Benz E55 AMG Base V8 5.5L 2004 211.076
Mercedes Benz E55 AMG Base V8 5.5L 2005 211.076
Mercedes Benz E55 AMG Base V8 5.5L 113.990 2003 211.076
Mercedes Benz E55 AMG Base V8 5.5L 113.990 2006 211.076
Mercedes Benz G500 Base V8 5.0L 2002 463.249
Mercedes Benz G500 Base V8 5.0L 2003 463.249
Mercedes Benz G500 Base V8 5.0L 2004 463.249
Mercedes Benz G500 Base V8 5.0L 2005 463.249
Mercedes Benz G55 AMG Base V8 5.5L 2003 463.246
Mercedes Benz G55 AMG Base V8 5.5L 2004 463.246
Mercedes Benz ML320 Base V6 3.2L 1998 163.154
Mercedes Benz ML320 Base V6 3.2L 112.942 1999 163.154
Mercedes Benz ML320 Base V6 3.2L 112.942 2000 163.154
Mercedes Benz ML320 Base V6 3.2L 112.942 2001 163.154
Mercedes Benz ML320 Base V6 3.2L 112.942 2002 163.154
Mercedes Benz ML320 Base V6 3.2L 112.942 2003 163.154
Mercedes Benz ML350 Base V6 3.7L 2003 163.157
Mercedes Benz ML350 Base V6 3.7L 2004 163.157
Mercedes Benz ML350 Base V6 3.7L 2005 163.157
Mercedes Benz ML430 Base V8 4.3L 113.942 1999 163.172
Mercedes Benz ML430 Base V8 4.3L 113.942 2000 163.172
Mercedes Benz ML430 Base V8 4.3L 113.942 2001 163.172
Mercedes Benz ML500 Base V8 5.0L 2002 163.175
Mercedes Benz ML500 Base V8 5.0L 2003 163.175
Mercedes Benz ML500 Base V8 5.0L 2004 163.175
Mercedes Benz ML500 Base V8 5.0L 2005 163.175
Mercedes Benz ML55 AMG Base V8 5.5L 2000 163.174
Mercedes Benz ML55 AMG Base V8 5.5L 2001 163.174
Mercedes Benz ML55 AMG Base V8 5.5L 2002 163.174
Mercedes Benz ML55 AMG Base V8 5.5L 2003 163.174
Mercedes Benz S350 Base V6 3.7L 2006 220.067
Mercedes Benz S430 4Matic V8 4.3L 113.948 2003 220.183
Mercedes Benz S430 4Matic V8 4.3L 113.948 2004 220.183
Mercedes Benz S430 4Matic V8 4.3L 113.948 2005 220.183
Mercedes Benz S430 4Matic V8 4.3L 113.948 2006 220.183
Mercedes Benz S430 Base V8 4.3L 2000 220.170
Mercedes Benz S430 Base V8 4.3L 2001 220.170
Mercedes Benz S430 Base V8 4.3L 2002 220.170
Mercedes Benz S430 Base V8 4.3L 2004 220.170
Mercedes Benz S430 Base V8 4.3L 2005 220.170
Mercedes Benz S430 Base V8 4.3L 2006 220.170
Mercedes Benz S430 Base V8 4.3L 113.941 2003 220.170
Mercedes Benz S500 4Matic V8 5.0L 113.966 2003 220.184
Mercedes Benz S500 4Matic V8 5.0L 113.966 2004 220.184
Mercedes Benz S500 4Matic V8 5.0L 113.966 2005 220.184
Mercedes Benz S500 4Matic V8 5.0L 113.966 2006 220.184
Mercedes Benz S500 Base V8 5.0L 113.960 2000 220.175
Mercedes Benz S500 Base V8 5.0L 113.960 2001 220.175
Mercedes Benz S500 Base V8 5.0L 113.960 2002 220.175
Mercedes Benz S500 Base V8 5.0L 113.960 2003 220.175
Mercedes Benz S500 Base V8 5.0L 113.960 2004 220.175
Mercedes Benz S500 Base V8 5.0L 113.960 2005 220.175
Mercedes Benz S500 Base V8 5.0L 113.960 2006 220.175
Mercedes Benz S500 Guard V8 5.0L 113.960 2000 220.175
Mercedes Benz S500 Guard V8 5.0L 113.960 2001 220.175
Mercedes Benz S55 AMG Base V8 5.5L 2004 220.174
Mercedes Benz S55 AMG Base V8 5.5L 2005 220.174
Mercedes Benz S55 AMG Base V8 5.5L 2006 220.174
Mercedes Benz S55 AMG Base V8 5.5L 113.986 2001 220.173
Mercedes Benz S55 AMG Base V8 5.5L 113.986 2002 220.173
Mercedes Benz S55 AMG Kompressor V8 5.5L 2003 220.174
Mercedes Benz SL500 Base V8 5.0L 2003 230.475
Mercedes Benz SL500 Base V8 5.0L 2004 230.475
Mercedes Benz SL500 Base V8 5.0L 2005 230.475
Mercedes Benz SL500 Base V8 5.0L 113.961 1999 129.068
Mercedes Benz SL500 Base V8 5.0L 113.961 2000 129.068
Mercedes Benz SL500 Base V8 5.0L 113.961 2001 129.068
Mercedes Benz SL500 Base V8 5.0L 113.961 2002 129.068
Mercedes Benz SL500 Base V8 5.0L 113.963 2006 230.475
Mercedes Benz SL55 AMG Base V8 5.5L 2004 230.474
Mercedes Benz SL55 AMG Base V8 5.5L 2005 230.474
Mercedes Benz SL55 AMG Base V8 5.5L 113.992 2006 230.474
Mercedes Benz SL55 AMG Base V8 5.5L 113.995 2007 230.472
Mercedes Benz SL55 AMG Base V8 5.5L 113.995 2008 230.472
Mercedes Benz SL55 AMG Kompressor V8 5.5L 2003 230.474
Mercedes Benz SLK320 Base V6 3.2L 2001 170.465
Mercedes Benz SLK320 Base V6 3.2L 2002 170.465
Mercedes Benz SLK320 Base V6 3.2L 2003 170.465
Mercedes Benz SLK320 Base V6 3.2L 2004 170.465
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

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