{"product_id":"3-5-inch-stainless-steel-o2-housing-downpipe-assembly","title":"3.5-Inch Stainless Steel O2 Housing \u0026 Downpipe Assembly","description":"The Modern Performance MPX-CSRT4-DP is a comprehensive O2 housing and downpipe assembly engineered to significantly enhance exhaust flow and power output for the 2008-2009 Dodge Caliber SRT-4.\n\nDesigned as a direct replacement for the restrictive factory downpipe, which incorporates both primary and secondary catalytic converters, this MPx unit streamlines the exhaust path. It features 3.5-inch stainless steel piping that maintains this larger diameter all the way to the 3-inch flange at the rear, eliminating the neck-downs and ball-and-socket flanges found in the OEM system that can lead to leaks or failures. The construction utilizes high-grade stainless steel for piping, flanges, and triple-layer mesh flex joints, all fully MIG-welded using production jigs to ensure quality and consistency. Vibrant Performance high-flow, street-legal catalytic converters are integrated into the assembly.\n\nBeyond its flow characteristics, the MPx downpipe offers several functional advantages. It includes additional welded bungs for Air\/Fuel Ratio and 1\/4 NPT Exhaust Gas Temperature monitors, facilitating precise engine tuning and diagnostics. The unit is notably lightweight, weighing around 9 lbs, which is less than half the weight of the factory assembly. A steel reinforcement bracket is incorporated to help manage stress caused by engine movement, contributing to durability.\n\nIt also includes a secondary O2 sensor defouler to prevent Check Engine Light illumination.","brand":"Modern Performance","offers":[{"title":"Default Title","offer_id":52689278599480,"sku":"MPX-CSRT4-DP","price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687392430.webp?v=1784904523","url":"https:\/\/store.motormia.co\/products\/3-5-inch-stainless-steel-o2-housing-downpipe-assembly","provider":"MOTORMIA","version":"1.0","type":"link"}