{"product_id":"jy-performance-4-diesel-muffler-4in-inlet-outlet-7-x-24-stainless-body-30-oal-tig-welded-low-resonance","title":"JY PERFORMANCE 4\" Diesel Muffler 4in Inlet\/Outlet — 7\" x 24\" Stainless Body, 30\" OAL, TIG-Welded Low-Resonance","description":"\u003cp\u003e\u003cstrong\u003eJY PERFORMANCE 4\" inlet diesel muffler is a straight-through, TIG-welded stainless steel exhaust silencer with a 7\" x 24\" body and 30\" overall length designed to reduce interior resonance without restricting flow.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis heavy-duty muffler pairs a straight-through internal path with precision TIG welds and a polished stainless finish to provide durable, rust-resistant exhaust tuning for diesel trucks, generators, and industrial engines. With matched 4\" inner diameter inlet and outlet ports and a compact 7\" round body, it balances noise attenuation and exhaust flow while resisting corrosion in harsh conditions.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this muffler affect engine sound and interior resonance?\u003c\/h3\u003e\n\u003cp\u003eThe straight-through design focuses on reducing low-frequency boom and cabin resonance rather than aggressive sound dampening. It smooths out harsh tones while keeping exhaust backpressure low for consistent engine performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStraight-through flow minimizes added backpressure for efficient exhaust scavenging.\u003c\/li\u003e\n  \u003cli\u003eInternal packing and chambering absorb unwanted interior resonance and boom.\u003c\/li\u003e\n  \u003cli\u003eWorks best when paired with properly sized piping and clamps for a tight seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the exact dimensions and fitment details?\u003c\/h3\u003e\n\u003cp\u003eThis muffler has a 4\" inner diameter inlet and outlet, a 24\" body length with a 7\" round shell, and a 30\" overall length including the inlet\/outlet stubs. Because inlet and outlet are identical, installation orientation is flexible.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInlet: 4\" ID — Outlet: 4\" ID, no directional difference.\u003c\/li\u003e\n  \u003cli\u003eBody: 7\" round × 24\" length; Overall length: 30\" OAL.\u003c\/li\u003e\n  \u003cli\u003eIncludes a matching clamp for straightforward slip-fit installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat is the construction like and how long will it last?\u003c\/h3\u003e\n\u003cp\u003eConstructed from stainless steel with TIG-welded seams, this muffler offers excellent resistance to rust and vibration-related fatigue. The polished surface finish helps repel road grime and keeps the unit looking professional under the vehicle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTIG welding ensures strong, precise joints that hold up to thermal cycling.\u003c\/li\u003e\n  \u003cli\u003eStainless steel body resists corrosion in salty, wet, and high-heat environments.\u003c\/li\u003e\n  \u003cli\u003ePolished exterior improves durability and simplifies cleaning and inspections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This muffler is intended for diesel truck owners, fleet maintenance teams, and equipment operators who need a reliable, low-restriction silencer to reduce cabin or nearby low-frequency noise while preserving exhaust flow. It’s a good choice when you want durable stainless construction, simple slip-fit installation with a supplied clamp, and a compact 7\" round body that fits many aftermarket and replacement applications. Avoid it only if you need a tuned performance muffler designed for significant horsepower gains or highly aggressive sound shaping.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFeatures:\n    \u003cul\u003e\n      \u003cli\u003eInlet: 4\" ID — Outlet: 4\" ID — Overall Length: 30\" — Body Length: 24\" — 7\" Round Body\u003c\/li\u003e\n      \u003cli\u003eStraight-through with TIG-welded construction\u003c\/li\u003e\n      \u003cli\u003eStainless steel for long-lasting anti-rust performance\u003c\/li\u003e\n      \u003cli\u003eDesigned to absorb unwanted interior resonance\u003c\/li\u003e\n      \u003cli\u003ePolished surface finish for corrosion resistance and appearance\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the inlet size the same as the outlet?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — both inlet and outlet are 4\" inner diameter, with no directional difference in this muffler.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this muffler include mounting hardware?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It comes with a matching clamp for slip-fit installation; additional hangers may be required depending on vehicle setup.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JY PERFORMANCE","offers":[{"title":"Default Title","offer_id":48082795266206,"sku":"B09CKQFB7Z","price":109.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/jy-performance-front-view_b1b564bf-6f8f-4478-b6a7-33301d16ce14.jpg?v=1785814580","url":"https:\/\/northtrailauto.ca\/products\/jy-performance-4-diesel-muffler-4in-inlet-outlet-7-x-24-stainless-body-30-oal-tig-welded-low-resonance","provider":"North Trail Auto","version":"1.0","type":"link"}