AST Suspension Lowering Springs (40mm/40mm TUV) - 2003-2010 Mercedes-Benz Viano (W639) 740 Part Number ISC-TSLS-FOR Part Name

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AST Suspension Lowering Springs (40mm/40mm TUV) - 2003-2010 Mercedes-Benz Viano (W639) 740 Part Number ISC-TSLS-FOR Part NameAST Lowering Springs for the 2003 2010 Mercedes Benz Viano (W639) are manufactured from a premium high tensile chromium silicone wire which is handpicked by AST engineers for its quality and metal consistency. Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the