Flowmaster
Flowmaster 2.5 IN(O)/OUT(C) 70 Series BBII Muffler
Flowmaster 2.5 IN(O)/OUT(C) 70 Series BBII Muffler
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The 70 series utilizes Flowmaster's Delta Flow® technology and an enlarged case for improved sound control along with mileage and power gains. Perfect for use on trucks, SUV's, RVs, tow vehicles and high performance street cars where space allows. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
- Recommended for SUV/trucks/motorhomes/tow vehicles
- Improved Horsepower, Torque and Engine Efficiency
- Mild to stock exterior exhaust tone
- Minimal interior resonance
Vehicle Fitment
Fits 6 makes, 1979-2007 — click to view all 21 models
- 1979 Dodge D100
- 1979-1980 Dodge D200
- 1979-1980 Dodge D300
- 1979-1992 Dodge D150
- 1981-1992 Dodge D250
- 1981-1992 Dodge D350
- 1986-1989 Dodge D100
- 1987 Ford F-250
- 1988-1992 Chevrolet C2500
- 1988-1992 Chevrolet K2500
- 1988-1992 GMC C2500
- 1988-1992 GMC K2500
- 1989 Dodge W100
- 1989-1992 Dodge W150
- 1989-1992 Dodge W250
- 1989-1992 Dodge W350
- 1990-1991 Dodge Dakota
- 1994-1996 Ford F-350
- 1994-1999 Ford F-250
- 2000-2006 Toyota Tundra
- 2005-2007 Nissan Armada
Please verify exact fitment for your trim and engine before ordering.
Manufacturer Part Number: 52571
Images are for illustrative purposes only. Actual product may vary.
⚠ WARNING (California Proposition 65): This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
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Manufacturer's Warranty — Flowmaster
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Manufacturer's Warranty — Flowmaster
Flowmaster warranty is tiered by material and product line. Lifetime Limited Warranty — stainless steel mufflers (FlowFX series excepted), all stainless steel exhaust systems (FlowFX included), stainless steel pipes, air intake kits and oiled-type filters (cleaning kits excepted), and other stainless steel exhaust accessories (exhaust tips and racing products excepted); this runs for the life of the original vehicle the part was installed on. Three (3) years — aluminized steel mufflers, exhaust systems and pipes, all exhaust tips, other non-race exhaust accessories, and commercial-vehicle applications of aluminized or stainless products. Two (2) years — Delta Force dry air intake filter elements. One (1) year — FlowFX series mufflers, Elite Series headers, and electronic components such as Delta Boost modules. Catalytic converters sold under the Flowmaster brand are excluded from this warranty. Coverage runs from the date of original purchase, to the original purchaser only, and only while the part remains on the vehicle it was originally installed on. Header coverage does not extend to damage caused by exhaust insulating wrap and is void if the header was fitted to a new or rebuilt engine during the initial break-in period. Sound-absorbing material inside “straight-through” mufflers degrades over time; Flowmaster treats that as normal wear, not a material defect. Also excluded: interior and exterior sound levels, cosmetic issues such as coatings and material discoloration, installation on a racing vehicle, improper installation or installation contrary to Flowmaster instructions, alteration, misuse, repair, accident, collision, undercarriage road impact or debris, and willful or negligent acts. To claim, the original purchaser returns the product either to the original retailer or directly to Flowmaster — a Returned Material Authorization (RMA) number must be obtained from Flowmaster first if returning to them — with proof of purchase showing place, price, product and date. Flowmaster's remedy is exchange for the same part number or refund of the purchase price at its option; installation, labor, towing and shipping costs are not covered.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by Flowmaster. Contact us if you need help with a warranty claim.

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