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Hooker 1979-1999 Ford Mustang Aero Chamber Muffler 21504HKR

Hooker 1979-1999 Ford Mustang Aero Chamber Muffler 21504HKR
Hooker 1979-1999 Ford Mustang Aero Chamber Muffler 21504HKR
$238.99 ea
NEWARRIVING SOONEstimated Ship Date 12/22/2025 (If Ordered Today)38 Available from HOLLEY PERFORMANCE PRODUCTS as of 12/04/2025
Model: 4008741
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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The raw aluminized steel Aero Chamber is designed to do much more than simply muffle exhaust noise. The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. The Hooker Aero Chamber uses a unique step principal, similar to that which is currently popular in racing header design. The aerodynamically designed chambers flow 23% better and produce more horsepower and torque than the most popular high performance brand.
Features:
  • 4-3/4"H x 10-1/4"W x 14"L 16 Gauge Raw Aluminzed Steel Case
  • Reinforced Inlets and Outlets
  • Stainless Steel Perforated Internal Plate Eliminates Internal Rust
  • Aerodynamic Lens Directs Sound Pressure Waves into Acceleration Chamber and Out of Muffler
  • Sound Absorption Chamber eliminates High Frequeny Sound Waves for Deep Throaty Powerful Sound
  • Resonance Chamber and Tuning Tube Cancels Unwanted Frequencies and Amplitudes (No annoying tin can sound or drone at cruising speed)
  • Stepped acceleration Chamber Increases Exhaust Gas Velocity and Maximum Flow
  • Three Internal Bulk Heads for Superior Case Durability and Stability
  • Single 2-1/2" Offset Outlet
  • Single 2-1/2" Offset Inlet
  • Feature intricate stainless steel, robotic weld seams
Can be use as a Replacement of 1979-99 Mustangs. To use Cut Off Inlet/Outlet Pipes Flush with Stock Mufflers and Weld in Place. Stock Hangers Must be Welded to New Muffler.
Installation Notes:
Can be use as a Replacement of 1979-99 Mustangs. To use Cut Off Inlet/Outlet Pipes Flush with Stock Mufflers and Weld in Place. Stock Hangers Must be Welded to New Muffler.

Downloads:

Download Name File Size
maxflo-acmuffrev1.pdf303.5KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Ford Mustang GT 1990 5.0L / 302 / V8 AERO CHAMBER MUFFLER; 1979-1999 MUSTANG; UNIVERSAL TURBO STYLE; BLACK FINISH; 4.75 IN. H X 10.25 IN. W X 14 IN. L; 2.5 IN. ID; 2.5 IN. OD; OFFSET INLET; SINGLE OFFSET OUTLET;
Ford Mustang LX 1990 5.0L / 302 / V8
2.3L / 140 / L4		 AERO CHAMBER MUFFLER; 1979-1999 MUSTANG; UNIVERSAL TURBO STYLE; BLACK FINISH; 4.75 IN. H X 10.25 IN. W X 14 IN. L; 2.5 IN. ID; 2.5 IN. OD; OFFSET INLET; SINGLE OFFSET OUTLET;
Ford Mustang 1979 2.3L / 140 / L4
5.0L / 302 / V8
3.3L / 200 / L6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1980 2.3L / 140 / L4
4.2L / 255 / V8
3.3L / 200 / L6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1981 2.3L / 140 / L4
4.2L / 255 / V8
3.3L / 200 / L6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1982 2.3L / 140 / L4
5.0L / 302 / V8
4.2L / 255 / V8
3.3L / 200 / L6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1983 2.3L / 140 / L4
5.0L / 302 / V8
3.8L / 232 / V6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1984 2.3L / 140 / L4
5.0L / 302 / V8
3.8L / 232 / V6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1985 2.3L / 140 / L4
5.0L / 302 / V8
3.8L / 232 / V6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1986 2.3L / 140 / L4
5.0L / 302 / V8
3.8L / 232 / V6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1987 2.3L / 140 / L4
5.0L / 302 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1988 2.3L / 140 / L4
5.0L / 302 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1989 2.3L / 140 / L4
5.0L / 302 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1991 2.3L / 140 / L4
5.0L / 302 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1992 2.3L / 140 / L4
5.0L / 302 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1993 2.3L / 140 / L4
5.0L / 302 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1994 5.0L / 302 / V8
3.8L / 232 / V6		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1995 5.0L / 302 / V8
3.8L / 232 / V6
5.8L / 351 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1996 3.8L / 232 / V6
4.6L / 281 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1997 3.8L / 232 / V6
4.6L / 281 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1998 3.8L / 232 / V6
4.6L / 281 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;
Ford Mustang 1999 3.8L / 232 / V6
4.6L / 281 / V8		 Aero Chamber Muffler; 1979-1999 Mustang; Universal Turbo Style; Black Finish; 4.75 in. H x 10.25 in. W x 14 in. L; 2.5 in. ID; 2.5 in. OD; Offset Inlet; Single Offset Outlet;

Specifications:

Automotive Item Grade High Performance
Body Height (in) 4.75
Body Length (in) 14
Body Width (in) 10.25
Color Silver
Emission Code 5
Finish Paint
Fitment Universal
Inlet Connection Type Pipe Connection
Inlet Diameter (in) 2.5
Inlet Position Offset
Material Aluminized Steel
Mounting Type Uses Factory Hangers
Muffler Series Aero Chamber
Muffler Type Chambered
Outlet Connection Type Pipe Connection
Outlet Diameter (in) 2.5
Outlet Position Offset
Overall Length (in) 17, 17
Part Type Exhaust Muffler
Product Type Street Mufflers
Proposition 65 www.P65Warnings.ca.gov
Reversible No
Shape Oval
Sound Level Aggressive Sound
Type of Muffler Chambered
Vehicle Type Classic Muscle Car, Truck/SUV, Street Rod, Late Model Muscle Car, Street/Strip

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