Description
Performance Enhancement. The Flowmaster Pro Series Center/Center Muffler with 4-inch inlet and 4-inch outlet delivers superior exhaust flow and efficient sound reduction. Designed for high horsepower vehicles such as diesels, trucks, RVs, and street rods, it provides optimal exhaust scavenging and improved engine performance. This muffler is ideal for those seeking balanced sound levels without sacrificing power.
Construction and Appearance. Crafted with 409 stainless steel internal components housed in a durable, fully welded 16 gauge stainless steel case, this muffler offers excellent durability and corrosion resistance. It features a high-temperature paint finish for added protection and a clean appearance.
Installation. This universal muffler features slip-fit inlet and outlet connections suitable for clamp-on or weld-on installation methods. Installation is straightforward, though some adaptation may be necessary to fit specific vehicle applications. Clamps, hangers, and heat shields are not included.
Warranty. This product comes with a limited warranty to ensure quality and performance longevity.
Application. Fits a wide range of vehicles, including classic muscle cars, diesels, late model muscle cars, street rods, street/strip vehicles, and trucks/SUVs. Universal fitment allows for broad compatibility, though some adaptation may be required for proper installation.
Flowmaster 14020100
CA Residents: WARNING: Cancer and Reproductive Harm
- Pro Series Muffler with 4.00″ Center Inlet and 4.00″ Center Outlet
- Moderate Sound Level
- Designed for High Horsepower Applications Including Diesels, RVs, and Trucks
- Race Proven Design
- 409 Stainless Steel Internal Construction
- Durable Fully Welded 16 Gauge Stainless Steel Case
- Body Diameter 9.00″
- Body Height 9.00″
- Body Length 20.00″
- Body Material 409 Stainless Steel
- Body Width 9.00″
- California Proposition 65 Compliant
- Clamps Not Included
- Emission Code 5
- Exhaust Tip Quantity 0
- Fitment Universal; Some Adaptation May Be Required
- Grade Type Performance
- Hanger Not Included
- Heat Shield Not Included
- Inlet Connection Slip-Fit
- Inlet Diameter 4.00″
- Inlet Inside Diameter 4.00″
- Inlet Location Center
- Inlet Outside Diameter 4.13″
- Inlet Quantity 1
- Inlet Type Clamp-On and Weld-On
- Muffler Series Pro Series
- Muffler Type Laminar Flow
- Outlet Connection Slip-Fit
- Outlet Inside Diameter 4.00″
- Outlet Location Center
- Outlet Outside Diameter 4.13″
- Outlet Quantity 1
- Outlet Type Single
- Overall Length 27.00″
- Part Type Exhaust Muffler
- Product Type Street Mufflers
- Reversible No
- Shape Round
- Sound Level Moderate
- Sub Category Mufflers
- Tunable No
- Vehicle Types Include Classic Muscle Car, Diesel, Late Model Muscle Car, Street Rod, Street/Strip, Truck/SUV
| Brand | Flowmaster |
| Muffler Inlet Size | 4.00 Inch |






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