We only believe in using OEM ContiTech belts for your 103 engine. This new belt will install on 190E 2.6 to 1989, all 260E and 300E 1986 to 1989, 300TE 1988 to 1989, and 126 300SE/L Sedan 1988 to 1989.
201 124 126 Chassis 103 Six Cyl Gas Serpentine Belt
$29.50
SKU:
GEG-COMCSDB 
Product Details
For other years and models of the 124 chassis please use our contact page.
If you car has more than 120,000 miles on it you may want to consider changing the belt tensioner at the same time. Please look below to order.
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$99.50
201 124 126 Chassis 103 Six Cylinder Gas Serpentine Drive Belt Tensioner
This is the unit that keeps your serpentine belt properly tensioned. This is a common part to see wear out in the 120,000 to 150,000 mile range. When it does, your belt will become loose leading to belt noise, overheating, and poor alternator output.