{"product_id":"premium-marine-exhaust-manifold-for-cummins-qsc83","title":"Premium Marine Exhaust Manifold For Cummins QSC8.3 6L8.9 Engine Bolt On Upgrade With Part Numbers 3971505 3971431 5446705 5446704 Durable Marine Engine Part Built For Power Performance And Reliability","description":"\u003cdiv\u003ePremium Marine Exhaust Manifold upgrade for 6L8.9 engines\u003cbr\u003e\n✔️ Bolt-on single unit exhaust manifold for QSC8.3 6L8.9 engines \u003cp\u003eThis bolt-on marine exhaust manifold is designed to replace the factory unit on engines using the 6L8.9 displacement range, providing improved exhaust flow and reliability for offshore applications.\u003c\/p\u003e \u003cp\u003e✅ Part Name: Marine Exhaust Manifold\u003cbr\u003e✅ Part Numbers: 3971505, 3971431, 5446705, 5446704\u003cbr\u003e✅ Application: Fit for 6L8.9 engine marine use\u003cbr\u003e✅ Important: Confirm engine model and exact part number before ordering; verify shipping address at checkout\u003cbr\u003e\u003c\/p\u003e \u003cp\u003e💡 What is a marine exhaust manifold used for in a high-performance boat engine?\u003c\/p\u003e\n\u003cp\u003eIt collects exhaust from multiple cylinders and routes it into the exhaust system, helping optimize flow, backpressure, and heat management in marine environments.\u003c\/p\u003e\n\u003cp\u003e- It helps improve engine breathing and efficiency in marine use\u003c\/p\u003e\n\u003cp\u003e- It reduces backpressure for steadier RPM and power\u003c\/p\u003e\n\u003cp\u003e- It supports durable operation under saltwater exposure\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48476059468011,"sku":"VXB0DJJSLYNR","price":2605.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51_6ADDxn6L_f6920342-cbb8-4bf0-b6f6-9ca79ff3a97d.jpg?v=1779389810","url":"https:\/\/vxb.com\/products\/premium-marine-exhaust-manifold-for-cummins-qsc83","provider":"VXB Bearings","version":"1.0","type":"link"}