Walker 21598 Exhaust Muffler - Left or Right
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Walker
 Quiet-Flow

Walker 21598 Exhaust Muffler - Left or Right

Brand Walker 21598
Position Left and Right
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 2
Body Width 7.75
Inlet Quantity 1
Outlet Inside Diameter 2.25
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 15.5
Body Height 3.25
Body Length 11
Body Material Steel
Finish Aluminized
Inlet 1 Inside Diameter 2
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 2.5
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Inside Diameter 2.25
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line Quiet-Flow
Fits Chevrolet and Pontiac · 42 vehicles

OE-style sound. Delivers a factory-like exhaust note with smooth flow.

Oval steel body. Aluminized finish helps resist corrosion.

Combination muffler. Built with offset pipe connections for a specific fit.

Cross-references Anchor 3008 for the same application. See all 1.

$56.91Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Quiet-Flow Muffler for OE-Style Exhaust Sound

Walker Quiet-Flow muffler Part Number 21598 is a specific-fit exhaust muffler built for select Chevrolet Camaro and Pontiac Firebird applications. It is shaped for OE-style sound control while supporting smooth exhaust flow, making it a practical replacement for a worn or noisy factory muffler.

The Quiet-Flow line is Walker’s OE-focused muffler family, developed for drivers who want a factory-like exhaust note without changing the character of the vehicle. This Walker 21598 muffler is sized with a 2-inch inlet, 2.25-inch outlet, oval steel body, and aluminized finish for a direct replacement approach on listed applications.

Key Features

  • Specific-fit exhaust muffler for select classic GM applications
  • Oval muffler body with aluminized steel construction
  • 2-inch inlet and 2.25-inch outlet pipe connection
  • Offset inlet and offset outlet configuration
  • Combination muffler design for OE-style sound control
  • Walker Quiet-Flow product line for factory-like exhaust tone
  • Part Number 21598 for catalog and fitment lookup

Product Details

Walker Quiet-Flow Part Number 21598 is designed for select 1967-1969 Pontiac Firebird, 1977-1981 Chevrolet Camaro, and 1978-1981 Pontiac Firebird exhaust applications. Fitment includes left and right positions where listed, with dual-exhaust notes on later Camaro and Firebird applications. The muffler measures 15.5 inches overall, with an 11-inch body length, 7.75-inch body width, and 3.25-inch body height. Its steel body and aluminized finish provide a serviceable replacement option for restoration and maintenance work where OE-style sound and fit are priorities.

This part cross-references Anchor 3008 for the same application.

Common Problems It Can Address

  • Exhaust noise from a damaged or rusted muffler
  • Loss of factory-style exhaust tone on restoration projects
  • Fitment issues when replacing a worn OE muffler on listed Camaro or Firebird applications
  • Corrosion-related replacement needs on older exhaust systems
  • Uneven exhaust sound from aging dual-exhaust setups

Installation Notes and Tips

Verify inlet and outlet diameters, offset configuration, and vehicle position before installation. Fits 1977-1981 Chevrolet Camaro, left and right; fits 1978-1981 Pontiac Firebird, left and right; fits 1978-1979 Pontiac Firebird, N/A position; and fits 1967-1969 Pontiac Firebird, left and right. For welded assemblies, replace all required exhaust parts at the same time to maintain alignment and sealing. Confirm the exhaust routing and hanger locations against the vehicle before final assembly.

Quality Assurance

Walker Quiet-Flow mufflers are backed by Walker’s limited lifetime warranty and a 90-day Safe and Sound guarantee. The Quiet-Flow line is built to deliver superior flow with OE-style sound for top-selling domestic and foreign vehicle applications, including classic Chevrolet Camaro and Pontiac Firebird fitments.

Related reading

This part fits 42 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
1981ChevroletCamaroZ285.7LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1981ChevroletCamaroZ285.7LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1981ChevroletCamaroZ285.0LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1981ChevroletCamaroZ285.0LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1981PontiacFirebird—5.0LV8RightExcept High Performance; Premium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1981PontiacFirebird—4.9LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1981PontiacFirebird—4.9LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1981PontiacFirebird—5.0LV8LeftExcept High Performance; Premium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980ChevroletCamaroZ285.0LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980ChevroletCamaroZ285.0LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980ChevroletCamaro—5.7LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980ChevroletCamaro—5.7LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980PontiacFirebird—5.0LV8RightExcept High Performance; Premium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980PontiacFirebird—4.9LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980PontiacFirebird—4.9LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1980PontiacFirebird—5.0LV8LeftExcept High Performance; Premium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1979ChevroletCamaroZ285.7LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1979ChevroletCamaroZ285.7LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1979PontiacFirebird—6.6LV8N/APremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1979PontiacFirebird—6.6LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1979PontiacFirebird—6.6LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1978ChevroletCamaroZ285.7LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1978ChevroletCamaroZ285.7LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1978PontiacFirebird—6.6LV8N/APremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1978PontiacFirebird—6.6LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1978PontiacFirebird—6.6LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1977ChevroletCamaroZ285.7LV8LeftPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1977ChevroletCamaroZ285.7LV8RightPremium; with Dual Exhaust; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow
1969PontiacFirebird—6.6LV8RightPremium; Limited Lifetime Warranty; Quiet-Flow
1969PontiacFirebird—6.6LV8LeftPremium; Limited Lifetime Warranty; Quiet-Flow
1969PontiacFirebirdBase4.1LL6RightPremium; Limited Lifetime Warranty; Quiet-Flow
1969PontiacFirebirdBase4.1LL6LeftPremium; Limited Lifetime Warranty; Quiet-Flow
1968PontiacFirebird—5.7LV8LeftPremium; Limited Lifetime Warranty; Quiet-Flow
1968PontiacFirebird—5.7LV8RightPremium; Limited Lifetime Warranty; Quiet-Flow
1968PontiacFirebirdBase4.1LL6RightPremium; Limited Lifetime Warranty; Quiet-Flow
1968PontiacFirebirdBase4.1LL6LeftPremium; Limited Lifetime Warranty; Quiet-Flow
1967PontiacFirebird—5.3LV8LeftPremium; Limited Lifetime Warranty; Quiet-Flow
1967PontiacFirebird—5.3LV8RightPremium; Limited Lifetime Warranty; Quiet-Flow
1967PontiacFirebirdBase3.8LL6RightPremium; Limited Lifetime Warranty; Quiet-Flow
1967PontiacFirebirdBase3.8LL6LeftPremium; Limited Lifetime Warranty; Quiet-Flow
1967PontiacFirebirdSprint3.8LL6LeftPremium; Limited Lifetime Warranty; Quiet-Flow
1967PontiacFirebirdSprint3.8LL6RightPremium; Limited Lifetime Warranty; Quiet-Flow
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 3008