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Part fits the following years:1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973


1964-73 GTO Muffler, Stainless Steel 40 Series (Offset/Offset) 2-1/2" I/O

Part# FM80425


Mfg# 8042543

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SAVE: $9.96 Retail: $104.95

OPGI Price: $94.99


Part Type: (P) High Performance, designed to improve performance
Years: Sold As: EACH

Premium stainless steel mufflers

Features a 10-year warranty

  • NOTE1: I = inlet, O = outlet.
  • NOTE2: These high-performance items are not eligible for any further discounts or promotional pricing.

Flowmaster mufflers are now manufactured using heavy-gauge 409S stainless steel for the ultimate in strength and durability. Using the same attention to detail that Flowmaster gives all of their products, these mufflers are designed to produce the signature sound you desire from your muscle car exhaust. All mufflers are finished in a durable black paint and available in your choice of 40-series or Super 44-series. Mufflers feature a variety of inlet and outlet sizes and include a 10-year limited warranty.

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