{"product_id":"exhaust-muffler-kit-for-subaru-legacy-2010-2019-2-5l","title":"Exhaust Muffler Kit for Subaru Legacy (2010-2019) 2.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Replacement Exhaust Muffler Kit for 2010-2019 Subaru Legacy (BM\/BN)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Exhaust Muffler Kit replaces degraded mid-pipe and rear exhaust components on the 2010-2019 Subaru Legacy to eliminate exhaust leaks, restore proper backpressure, and maintain factory acoustic dampening.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Subaru Legacy Exhaust Corrosion and Baffle Deterioration\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust systems on the \u003cstrong\u003eBM\u003c\/strong\u003e and \u003cstrong\u003eBN\u003c\/strong\u003e chassis Subaru Legacy routinely suffer from structural rot at the mid-pipe flange junctions, hanger brackets, and resonator seams. Road salt and repeated heat cycling corrode the stock thin-wall tubing, resulting in audible exhaust leaks, noxious cabin fumes, and failed emissions inspections. Internally, deteriorating steel baffles and degraded glass packing break free, introducing high-frequency cabin drone and turbulent backpressure that negatively impacts the scavenging efficiency of the \u003cstrong\u003eEJ253\u003c\/strong\u003e and \u003cstrong\u003eFB25\u003c\/strong\u003e boxer powerplants.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive exhaust kit restores exhaust gas flow and structural reliability using heavy-gauge, corrosion-resistant aluminized steel. Mandrel-bent piping ensures smooth internal radiuses, eliminating the flow choke points found in crush-bent alternatives. The resonator and muffler utilize calibrated internal chambering and dense, thermal-resistant packing to attenuate low-rpm boom without choking exhaust flow. Engineered to mount to factory underbody isolators, the assembly includes high-temperature crush gaskets and mechanical clamps that mate directly to factory service points matching OEM numbers \u003cstrong\u003e2103-432568\u003c\/strong\u003e, \u003cstrong\u003e55645\u003c\/strong\u003e, and \u003cstrong\u003eSU9015\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Muffler\u003c\/li\u003e\n  \u003cli\u003e1 Intermediate Pipe\u003c\/li\u003e\n  \u003cli\u003e1 Resonator\u003c\/li\u003e\n  \u003cli\u003eGaskets\u003c\/li\u003e\n  \u003cli\u003eClamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2010-2019 Subaru Legacy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eEJ253 \/ FB25 2.5L \/ BM, BN\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e170-175 hp \/ 170-174 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2103-432568, 2103-432570, 21743, 55645, 21648, SU9015, SU9017, 2103-432559, 603175, 304140\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2010-2019 Subaru Legacy 2.5L (2.5i, Premium, Limited, Sport)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the BM\/BN Legacy?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2010-2019 Subaru Legacy equipped with the 2.5L \u003cstrong\u003eEJ253\u003c\/strong\u003e or \u003cstrong\u003eFB25\u003c\/strong\u003e engine. \u003cstrong\u003eThis kit does not fit 3.6L H6 or 2.5GT turbo models due to differing pipe diameters and routing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDoes this system require welding during installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this assembly is engineered as a direct bolt-on replacement utilizing slip-fit joints, factory hanger points, and the included mechanical clamps and flange gaskets.\u003c\/p\u003e\n\n\u003ch3\u003eThe Subaru Boxer Caliber\u003c\/h3\u003e\n\u003cp\u003eSubaru's horizontally opposed boxer platform requires smooth exhaust pulsing to preserve low-end torque and eliminate harsh harmonics; this kit restores precise acoustic balance and smooth flow across all driving conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67564823380216,"sku":"DS-E4DTTON6Z","price":293.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-muffler-kit-for-subaru-legacy-2010-2019-2-5l-1.jpg?v=1791049571","url":"https:\/\/performancechiptuning.com\/products\/exhaust-muffler-kit-for-subaru-legacy-2010-2019-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}