The Flowmaster 842543 40 Delta Flow muffler is designed for street, strip, and off-road applications where aggressive exhaust sound and dependable performance are important. Its two-chamber design uses Flowmaster Delta Flow technology to improve exhaust scavenging, helping support enhanced engine performance while reducing interior resonance compared with a standard 40 Series muffler. The result is an aggressive exterior tone with a milder, more controlled sound inside the vehicle.
Constructed from durable 16-gauge 409 stainless steel, this universal muffler is fully MIG welded for long-lasting strength and resistance to the demands of high-performance driving. The offset inlet and offset outlet accommodate a variety of custom exhaust configurations, although some adaptation may be required for installation. With no internal packing to deteriorate or blow out, the Flowmaster 40 Delta Flow is built to provide consistent sound and performance over time.
The Flowmaster 842543 combines race-proven Delta Flow technology with rugged stainless steel construction for enthusiasts seeking a reliable universal muffler. It is supplied as a single muffler and is intended for automotive applications. Professional installation is recommended to ensure proper fitment, exhaust alignment, and secure welding or connection to the existing system. This product may be subject to California Proposition 65 requirements.
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