Walker 21642 Quiet-Flow SS Muffler Dodge Ram 1500 2009-2023 Direct Fit For Sale - New and Used

Walker 21642 Quiet-Flow SS Exhaust Muffler Dodge Ram 1500 Direct Fit

Description

Walker Quiet-Flow SS 21642 direct-fit replacement exhaust muffler is engineered for compatible Dodge Ram 1500, Ram 1500, and Ram 1500 Classic truck applications. Constructed from corrosion-resistant 100% stainless steel, this OE-style muffler features internal partition tubes and mechanical interior joints to deliver factory-level acoustics and smooth exhaust flow without aggressive interior cabin drone. Built with an oval profile measuring 26 inches in body length by 9 inches wide and 7 inches high, the unit features an offset inlet and an offset 3-inch inner diameter outlet pipe. Factory-positioned welded steel mounting hangers align directly with OE chassis rubber isolators for straightforward installation without custom fabrication. Fitment depends on engine, cab/bed, wheelbase, and single/dual exhaust configuration; verify Walker part number 21642 against your VIN/application before purchase.

Features

• Walker Quiet-Flow SS direct-fit replacement exhaust muffler assembly

• 100% stainless steel body construction provides extended service life against corrosion and road debris

• OE-style acoustic internal baffles and mechanical joints preserve factory exhaust sound levels

• Embossed QUIET-FLOW SS branding and part number 21642 stamped directly into the outer shell

• Directional INLET arrow stamped directly into the casing ensures correct installation orientation

• Pre-welded heavy-duty mounting hanger brackets align with factory undercarriage rubber isolators

• Single offset inlet and single offset 3-inch inner diameter outlet pipe configuration

• Muffler casing measures 26 inches in length, 9 inches in width, and 7 inches in height with a 38-inch overall length

• Engineered for compatible single-exhaust system Dodge Ram 1500 and Ram 1500 Classic platforms

Item Specifics

• Brand: Walker

• Manufacturer Part Number (MPN): 21642

• Product Line: Quiet-Flow SS

• Type: Exhaust Muffler / Direct Fit Muffler

• Placement on Vehicle: Rear, Lower, Undercarriage

• Fitment Type: Direct Replacement

• Material: Stainless Steel

• Finish: Natural Stainless Steel

• Body Shape: Oval

• Body Length: 26 in

• Body Width: 9 in

• Body Height: 7 in

• Overall Length: 38 in

• Inlet Configuration: Offset

• Outlet Configuration: Offset

• Number of Inlets: 1

• Number of Outlets: 1

• Outlet Diameter: 3 in ID

• Connection Type: Pipe Connection / Slip Fit / Clamp-on

• Mounting Brackets Included: Yes (Welded Factory-Style Hangers Attached)

• Universal Fitment: No

• Performance Part: No

• Vintage Part: No

Vehicle Compatibility

Make: Dodge

• Ram 1500 (2009–2010) — 5.7L V8 (ST / SLT trims, 120" or 140" Wheelbase), 3.7L V6, 4.7L V8 (Single Exhaust configurations)

Make: Ram

• 1500 (2011–2021) — 5.7L V8 (Standard Cab, 140" Wheelbase, Single Exhaust), 3.6L V6 (2019–2021), Short / Long / Extra-Short Bed (Single Exhaust)

• 1500 Classic (2019–2023) — Single Exhaust configurations

Cross Reference / Interchange Identifiers

• Walker: 21642

• Walker Alternate: 21-642

• Mopar / Chrysler: 55398258AD

• Mopar / Chrysler: 55398258AC

• Mopar / Chrysler: 55398265AG

• Mopar / Chrysler: 55398265AF

• Mopar / Chrysler: 55398266AD

• Mopar / Chrysler: 68092187AB

• Shell Stamping: QUIET-FLOW SS 21642 9 530

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