{"product_id":"pdi-big-boss-cummins-isx15-x15-exhaust-manifold","title":"PDI Big Boss Cummins ISX15 \/ X15 Exhaust Manifold","description":"\u003cp\u003e\u003cstrong\u003eAvailable for:\u003c\/strong\u003e Cummins ISX15 and X15 Engines 2010–2024\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2 Year Unlimited Mile Warranty\u003c\/p\u003e\u003ch4\u003eKey Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUp to 20% increase in airflow over stock\u003c\/li\u003e\n\u003cli\u003e75–100 degree cooler EGTs\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePDI Big Boss Exhaust Manifolds are designed to maximize exhaust air flow to reduce turbo lag time and cool exhaust temperatures. In the design of the manifold each port is analyzed and tested to provide a balanced flow to the turbocharger. Big Boss Exhaust Manifolds produce, on average, a 20% air flow increase over a stock manifold, cooling exhaust temperatures up to 75–100 degrees. PDI manifolds are a big part in maintaining the best exhaust pressure to boost pressure ratios which will provide potential for increased fuel economy.\u003c\/p\u003e\u003cp\u003eAt PDI, we use only the best material for our products. We use a superior grade of High Silicon with Molybdenum Ductile Iron (HSMD) that eliminates weak points such as warping, cracking, and failure from heat erosion. This material, combined with a redesign of the mounting surfaces, eliminates common failures due to a fatigued manifold.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOEM Reference Part Numbers:\u003c\/strong\u003e 3687063, 3692604, 3689251, 3687062\u003c\/p\u003e","brand":"Performance Diesel Inc","offers":[{"title":"Polished Ceramic","offer_id":44184874221748,"sku":"101000074432-PC","price":1985.0,"currency_code":"USD","in_stock":true},{"title":"Black Ceramic","offer_id":44184874254516,"sku":"101000074432-BC","price":1985.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7425\/5540\/files\/Screenshot2026-04-29123001.png?v=1777481767","url":"https:\/\/parts.rodoc.com\/products\/pdi-big-boss-cummins-isx15-x15-exhaust-manifold","provider":"Rodoc Leasing Sales \u0026 Service ","version":"1.0","type":"link"}