Flowmaster 2.25IN(O)/OUT(O) 40 Series Muffler

The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound, this is the muffler for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. 40 Series - 2.25 Offset In / 2.25 Offset Out - Aggressive Sound Universal Muffler - Some adaptation may be required.

• Excellent street/strip and off road application
• Durable fully-welded 16 gauge aluminized steel
• Aggressive sound exterior exhaust tone
• Noticeable interior resonance

The Flowmaster 40 Series muffler, Part 42443, delivers the classic aggressive exhaust tone associated with the original Flowmaster sound. Designed for drivers who want a strong exterior presence and noticeable interior resonance, this universal muffler is well suited for street, strip, and off-road applications. Its offset inlet and offset outlet configuration supports a wide range of custom exhaust system installations.
Constructed from durable 16-gauge aluminized steel, the muffler is fully MIG welded to help withstand demanding driving conditions and extended use. The robust construction provides reliable performance while maintaining the distinctive Flowmaster 40 Series sound. The 2.25-inch inlet and outlet are designed for compatible exhaust systems, although adaptation or additional fabrication may be required for installation.
As a universal automotive muffler, the Flowmaster 40 Series is intended for custom-fit applications rather than direct replacement installation. Verify exhaust routing, inlet and outlet alignment, clearance, and vehicle compatibility before installation. Professional installation is recommended when modifications to the existing exhaust system are necessary. This muffler is a practical choice for enthusiasts seeking durable construction and an aggressive exhaust character from a trusted performance exhaust brand.

Features:

• Flowmaster 40 Series muffler with classic aggressive exterior exhaust tone

• 2.25-inch offset inlet and 2.25-inch offset outlet for compatible custom exhaust systems

• Durable 16-gauge aluminized steel construction

• Fully MIG welded for enhanced strength and long-term durability

• Noticeable interior resonance for a pronounced cabin exhaust experience

• Suitable for street, strip, and off-road applications

• Universal muffler design; some adaptation or fabrication may be required