{"product_id":"allen-bradley-99370a2-exhaust-water-shutter","title":"Allen-Bradley 99370A2 Exhaust Water Shutter","description":"\u003cdiv\u003e\u003cp\u003e99370A2 Exhaust Water Shutter is a genuine Mercury Marine OEM water shutter assembly designed for MerCruiser stern drives with a 3-inch exhaust Y-pipe. It prevents water from backing into the exhaust riser and manifold, and is installed at the top of the exhaust collector pipe on applicable MerCruiser configurations. The part is a direct OEM replacement for MerCruiser V6 and V8 engines that use center-riser, 3-inch exhaust piping, dating to model years 1982 through 1987. Sold as an authentic Mercury Marine factory part with the Mercury part number 99370A2, it formats as a compact, easy-to-install component for service or restoration projects. Verified specifications list a compact footprint: 3.00 inches in length and width, 0.75 inches in height, and an approximate shipping weight of 0.06 pounds, helping to ensure precise fitment and minimal impact on engine bay clearance. This shutter is commonly used in maintenance or rebuild scenarios for MerCruiser stern drives requiring a 3-inch water shutter to maintain correct exhaust flow and deter water intrusion into the exhaust system during operation. \u003c\/p\u003e\u003c\/div\u003e","brand":"Aftermarket","offers":[{"title":"New","offer_id":51657067921710,"sku":null,"price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_f3750622-73cc-4320-bda6-2af41fe44981.jpg?v=1769465759","url":"https:\/\/plgautomation.com\/products\/allen-bradley-99370a2-exhaust-water-shutter","provider":"PLG Automation ","version":"1.0","type":"link"}