Walker Exhaust 21243 Quiet-Flow SS Direct Fit Exhaust Muffler 2.25" Inlet 2.75" Outlet

The Walker Exhaust 21243 Quiet-Flow SS Muffler is a direct-fit, OE-style replacement muffler engineered for a precise fit, superior exhaust flow, and factory-quality sound. Featuring 100% stainless steel construction throughout — including the shell, heads, bushings, louvered tubes, and partitions — this muffler is built to outlast standard aluminized alternatives. With a 2.25" inner diameter inlet and a 2.75" outer diameter outlet, it delivers a straightforward, bolt-on installation with no specialized fabrication or welding required.

Key Features:

• 100% Stainless Steel Construction — Full stainless steel body, heads, and internals deliver exceptional corrosion resistance and longer service life versus aluminized mufflers
• Internal Drainage System — Reduces moisture accumulation inside the muffler to help prevent premature rust and deterioration
• OE-Style Louvered Tubes & Domed Heads — Engineered to reduce radiated noise and deliver premium, factory-style sound quality
• Spun-Locked Heads & OE-Style Spot Welds — Durable single-shell body construction with internal partitions for structural stability and long service life
• Mechanically Joined Internal Tubes — Allow expansion and contraction during temperature cycling to minimize distortion and maintain consistent performance
• Direct-Fit Bolt-On Replacement — Includes OE-style hangers, brackets, and pipe routings for easy, no-fabrication installation
• Acoustic and Flow Tested — Validated internal muffler design meets or exceeds factory performance standards
• Inlet: 2.25" Inner Diameter (ID) | Outlet: 2.75" Outer Diameter (OD)

The Walker Quiet-Flow SS line represents the only broad-market muffler series built with fully stainless steel internals, making the 21243 an ideal long-term replacement for worn or failing OE mufflers. It is sold individually.