{"product_id":"4939034-genuine-cummins®-exhaust-muffler","title":"4939034 | Genuine Cummins® Exhaust Muffler","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e Exhaust Muffler\u003cbr\u003e\u003cstrong\u003eCondition: \u003c\/strong\u003eNew\u003cbr\u003e\u003cstrong\u003eBrand: \u003c\/strong\u003eCummins®\u003cbr\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 4939034\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_540e8933d63b740e-48\"\u003e\u003cb\u003e\u003cspan class=\"citation-102 citation-end-102\"\u003eCummins Onan® Commercial \u0026amp; RV Generators:\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/b\u003e Select commercial mobile, utility, and standby generator models. \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOnan® Industrial Engine Series:\u003c\/b\u003e Compact multi-cylinder gasoline, LP, and diesel engine power units utilized in industrial equipment, welders, and utility machinery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePower Generation Equipment:\u003c\/b\u003e Mobile power units, auxiliary power units (APUs), and stationary generator sets (G-Drive \/ Gensets).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Exhaust Muffler is an OEM mechanical exhaust attenuation component and integrated spark arrestor engineered specifically for Cummins Onan® generator sets and mobile power equipment.\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003ch4\u003e\u003cb\u003e1. What is it?\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003ePart is a heavy-duty cylindrical exhaust silencer installed in the exhaust system downstream of the engine exhaust manifold or flexible exhaust tube. It calms expanding combustion gases to suppress engine noise and safely channels exhaust gases outside the generator enclosure or vehicle body.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003e2. Core Functions \u0026amp; Technical Features\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAcoustic Attenuation (Noise Reduction):\u003c\/b\u003e Reduces decibel levels produced by internal combustion pulses, ensuring compliance with strict US Forest Service and RV park noise regulations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eIntegrated Spark Arrestor:\u003c\/b\u003e Features a specialized internal screen or baffle system that captures glowing carbon particles and sparks before they exit the exhaust pipe, preventing fire hazards in dry\/forested environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCorrosion \u0026amp; Heat Resistance:\u003c\/b\u003e Constructed from heavy-gauge aluminized steel or stainless steel to withstand high-temperature exhaust flow, thermal expansion, and weather exposure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBackpressure Management:\u003c\/b\u003e Designed with precise internal baffling to minimize engine backpressure, ensuring optimal power output and fuel efficiency for Onan® power units.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSigns of Faulty\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003ch4\u003e\u003cb\u003e1. Excessive Engine Noise (Loud Exhaust Pop or Roar)\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e The generator or engine operates at a noticeably higher decibel level, producing a sharp popping, rattling, or roaring noise during operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e Internal baffle collapse, structural rust holes, or split seams along the muffler casing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cb\u003e2. Exhaust Gas Leaks \u0026amp; Carbon Soot Accumulation\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e Black carbon soot buildup inside the generator compartment or visible smoke escaping directly from around the muffler casing rather than the tailpipe outlet.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e Cracking along weld seams or severe rust perforation in the aluminized steel shell.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cb\u003e3. Loss of Engine Power or Generator Stalling Under Load\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e The generator starts normally but bogs down, struggles under electrical load, or stalls completely after running for a short period.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e Clogged internal spark arrestor screen or collapsed internal baffles creating excessive exhaust backpressure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cb\u003e4. Burning Odor or Fire Hazard Warning (Spark Escaping)\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e Visible sparks or glowing embers exiting the tailpipe, or a strong smell of hot metal\/exhaust inside the equipment enclosure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e Degradation or burnout of the integrated internal spark arrestor screen, allowing unburned carbon embers to pass through.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer information\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCummins®\u003c\/strong\u003e is a worldwide leader in the production of engines, agricultural components, and other power-generating devices for various industries, including medium and heavy duty trucks, light commercial vehicles, buses, agriculture, and construction. Founded in 1919, this company stays true to its mission of making people's lives better by continuously improving its product line-up and introducing new solutions for a more prosperous world. Its core values—integrity, diversity and inclusion, excellence, caring, and teamwork—are what make it a successful company today—a worldwide leader with a network of more than 600 company-owned and independent distributors and almost 6,000 dealers in approximately 190 countries.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003eFirst Truck Parts offers a \u003cstrong\u003e365-days warranty\u003c\/strong\u003e for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.\u003c\/p\u003e","brand":"First Truck Parts","offers":[{"title":"Default Title","offer_id":49330042372340,"sku":"4939034","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/1479\/5764\/files\/ftpcorobka_e0cf6fa7-3a59-4741-97bb-912ea5d194b4.jpg?v=1783703596","url":"https:\/\/firsttruckparts.com\/en-ca\/products\/4939034-genuine-cummins%c2%ae-exhaust-muffler","provider":"First Truck Parts","version":"1.0","type":"link"}