Flowmaster · New

Flowmaster 3.5 IN(O)/OUT(O) 50 Series Heavy Duty SS Muffler

Name: Flowmaster 3.5 IN(O)/OUT(O) 50 Series Heavy Duty SS Muffler
Brand: Flowmaster
SKU: flo853558
Price: 340.95 USD

MPN 853558 · Store SKU flo853558

$340.95

CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/8/2026, 3:12:27 AM UTC. Adding a part does not reserve it.

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Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

Flowmaster's stainless steel 50 Series HD muffler is designed for today's heavy duty gas and diesel trucks. This muffler delivers improved performance, throttle response and mileage. The 50 HD features a deep, moderate tone with minimal interior resonance and is ideal for trucks with modified engines. This muffler is constructed of 409S Stainless Steel with a 3.5" inlet and outlet, and is covered by Flowmaster's Lifetime Limited Warranty. 50 H.D. Stainless Steel - 3.5 in. Offset In/3.50 in. Offset Out - Moderate Sound Flowmaster 50 Series HD Chambered Muffler

Manufacturer fitment & guides

Check 853558 against the manufacturer’s application information below.

Part-specific notes

California Proposition 65: Y

Manufacturer documents

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