MERCEDES-BENZ ML CLASS W163 DOOR LATCH ACTUATORS COMPLETE REPAIR KIT SPRING X4 X8R0072 Product Description: It is a common fault for the poor quality OEM springs to snap within the door lock actuators causing the jumping door lock symptoms. Our improved design stainless steel springs enable you to replace just this component that fails, saving the cost of a complete new door lock actuator which in time would only fail again. The solution: Our replacement improved design / material springs allow you to repair the actuator. Made from high quality Stainless Steel (will not deteriorate over time like springs offered by some others) our improved design thicker wound springs will restore your lock and will not deteriorate over time like the OEM part does, save the cost of a replacement actuator that will just fail again. You will receive: Our repair kit includes: 4x Replacement stainless steel springs 1x Installation tool Vehicles Affected: Mercedes ML Class W163 1997-2005 Mercedes-Benz M-Class W163 ML 230 Mercedes-Benz M-Class W163 ML 270 CDI Mercedes-Benz M-Class W163 ML 320 Mercedes-Benz M-Class W163 ML 350 Mercedes-Benz M-Class W163 ML 350 Mercedes-Benz M-Class W163 ML 400 CDI Mercedes-Benz M-Class W163 ML 430 Mercedes-Benz M-Class W163 ML 500 Mercedes-Benz M-Class W163 ML 55 AMG Some Associated part numbers: A1637302135, A1637302136, A1637201735, A1637301135, A1637302335, A1637301235, A1637201235. Instructions: 1) https://youtu.be/EVfcCRjZhvo 2) http://x8r-instructions.co.uk/Mercedes-M-ML-Class-W163-1997-2005-Door-Lock-Actuator-springs-replacement-repair-kit-install-instructions-guide.pdf