Seller notes

807757T For Mercruiser 4.3L 5.0L 5.7L 350 mag v6 v8 Serpentine Belt Idler Pulley Including: products as shown in the picture New Mercruiser serpentine idler belt pulley Fits many engines V6 and V8 If yours has an outside diameter of 3 1/4" this is the pulley you need! Uses 6 groove, 1" wide serpentine belt. This item replacement kit is directly shipping from our factory or yours location warehouse. Please don't hesitate to contact us whether you are unsure the kit replacement or interested in me...

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