Amazon Secure Payment System Continue shopping “Sierra International 18-8507 Marine Exhaust Elbow Mounting Kit for OMC Sterndrive/Cobra Stern Drive” has been added to your cart. Product Price Quantity Subtotal × OEM Evinrude Johnson Impeller with Key 0434424 $16.74 OEM Evinrude Johnson Impeller with Key 0434424 quantity $16.74 × Sierra International 18-1956-1 Marine Port and Starboard Manifold for Mounting Package for Mercruiser Stern Drive $366.68 Sierra International 18-1956-1 Marine Port and Starboard Manifold for Mounting Package for Mercruiser Stern Drive quantity $366.68 × Sierra International 18-8507 Marine Exhaust Elbow Mounting Kit for OMC Sterndrive/Cobra Stern Drive $25.86 Sierra International 18-8507 Marine Exhaust Elbow Mounting Kit for OMC Sterndrive/Cobra Stern Drive quantity $25.86 Coupon: Apply coupon Update cart Cart totals Subtotal $409.28 Total $409.28 Proceed to checkout