1981 Pontiac Firebird Exhausts

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    • (0 reviews)
      $918.20$734.56
      Pontiac Firebird 4.3 / 4.9 / 5.0 1981, American Thunder™ Stainless Steel Dual Header-Back Exhaust System by Flowmaster®, AGGRESSIVE SOUND. 50 Series Slim-Line Mufflers. Dual Side Exit. 2.5" Tubing. Includes H-Pipe. American...
      # 41558468
    • (0 reviews)
      $361.09$288.87
      Pontiac Firebird 4.9L / 5.0L 1981, Super Turbo™ Muffler-Back Exhaust System by DynoMax®. 2"-2.5" Tubing. With Mufflers Under Floor Pan, 2.25" Dual Extension Pipes, 2.5" Dual Tail Pipes and Clamps. Dyno proven to flow up to 70...
      Constructed to increase horsepower and torque thanks to improved exhaust flowThe Super Turbo muffler will maintain a mellow performance tone
      # 18216040
    • (0 reviews)
      $83.20$66.56
      Pontiac Firebird 1981, 220 Series Stainless Steel Oval Catalytic Converter by Flowmaster®, 2.25" Inlet / 2.25" Outlet. 14" Length. 6.13" Width. Includes Heat Shield, Air Tube, 4 Bolt Flanges. Without Hangers. The new Flowmaster...
      # 870390
    • (0 reviews)
      $158.19from $126.55 - $244.21
      Pontiac Firebird 1981, Direct Fit Pre-OBDII Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace...
      # 35254261
    • (0 reviews)
      $145.60from $116.48 - $121.96
      Pontiac Firebird 4.9L / 5.0L 1981, 80 Series Cross-Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.5" Offset Inlet / 2.5" Dual Outlet. This is the ideal muffler for Camaros and Firebirds, providing true dual exhaust performance...
      # 851214
    • (0 reviews)
      $79.46$63.57
      Pontiac Firebird 4.9L / 5.0L With Mufflers Under Floor Pan 1981, Super Turbo™ Muffler by DynoMax®. 3" Offset Inlet / 2.25" Offset Outlet. 11" Body Length, 7.75" Body Width, 3.25" Body Height. Right Side / Left Side. Reversible....
      Constructed to increase horsepower and torque thanks to improved exhaust flowAluminized steel Super Turbo muffler maintains a mellow performance tone
      # 18221024
    • (0 reviews)
      $170.50from $136.40 - $176.28
      Pontiac Firebird 1981, Prebend Tailpipes by Flowmaster®, 1 Pair. 2.5" Tubing Diameter. Rear Exit. These tailpipes are bare dual-out rear exit pipes and are sold in pairs. Hardware and hangers are not included in kit. Fitments for...
      # 870182
    • (0 reviews)
      $40.90from $32.72 - $34.08
      Pontiac Firebird 4.9L / 5.0L 1981, Tail Pipe by DynoMax®. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job. Every component is manufactured...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      # 18222227
    • (0 reviews)
      $10.44from $8.35 - $16.70
      Pontiac Firebird 5.0L 1981, Exhaust Header Gaskets by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      # 12056224
    • (0 reviews)
      $94.93from $75.94 - $90.12
      Pontiac Firebird 5.0L 1981, Exhaust Manifold by Dorman®, 1 per Pack, 1 per Pack. Material: Cast Iron. Bolt Hole Quantity: 6. With Installation Hardware. More like a complete kit than a single part, many of the Exhaust Manifolds...
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      # 16500272
    • (0 reviews)
      $122.11$97.69
      Pontiac Firebird 1981, Direct Fit Catalytic Converter by Walker®. This catalytic converter is constructed specially for your vehicle to directly replace the original equipment part and comes ready to install. The part is designed...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      # 17733432
    • (0 reviews)
      $83.75from $67.00 - $119.22
      Pontiac Firebird 1981, Universal Catalytic Converter by Walker®. This part features the correct load of precious metals to ensure the proper limitation of tailpipe emissions. It is designed to meet the EPA policy and emission...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      # 17742028
    • (0 reviews)
      $120.86$96.69
      Pontiac Firebird 1981, EPA Direct Fit Undercar Catalytic Converter by Eastern®. Series: Standard. One Clamp. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      # 17579882
    • (0 reviews)
      $49.50from $39.60 - $40.88
      Pontiac Firebird 1981, EPA Universal Fit Catalytic Converter by Eastern®. Inlet/Outlet: 2.25"/2.25". Series: Standard. Overall Lenght: 14". Whether your catalytic converter is damaged by road debris or failed due to an engine...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      # 38848227
    • (0 reviews)
      $60.53$48.42
      Pontiac Firebird 1981, Quiet-Flow Muffler by Walker®. Together with delivering OE-style sound, the Quiet-Flow Muffler features 100% structural stainless steel construction that resists rust three times longer than aluminized...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      # 35483452
    • (0 reviews)
      $34.71from $27.77 - $27.80
      Pontiac Firebird Formula V8 1981, Extension Pipe by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18131535
    • (0 reviews)
      $48.38from $38.70 - $81.74
      Pontiac Firebird Formula V8 1981, Tail Pipe by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18179636
    • (0 reviews)
      $92.68$74.14
      Pontiac Firebird Formula V8 Naturally Aspirated 1981, Y-Pipe by Walker®. Finish - Aluminized, 23" Overall Length, 1 Inlets, Inlet Connection Type - 2 Bolt Loose Flange with Spherical Flare, 2 Outlets, 2" Outside Outlet Diameter,...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18183435
    • (0 reviews)
      $30.19$24.15
      Pontiac Firebird Formula V8 Naturally Aspirated 1981, Air Tube Kit by Walker®. 1 Inlet, 1 Outlet. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18117601
    • (0 reviews)
      $18.74$14.99
      Pontiac Firebird 5.0L 1981, Premium™ Header Gasket Set 1.63" Diameter by BBK Performance®. These premium steel core graphite gaskets are flexible for a long lasting leak-proof seal even when cylinder head and header flange...
      # 10961521
    • (0 reviews)
      $37.86$30.29
      Pontiac Firebird 5.0L 1981, Header Install Kit by Mr. Gasket®, Includes Header Exhaust/Collector Flange Gasket/Header and Collector Flange Bolts. Whatever exhaust system you install on your engine, whether it’s a set of chromed...
      # 12330728
    • (0 reviews)
      $44.19$35.35
      Pontiac Firebird 5.0L 1981, Stainless Steel Exhaust Header Bolt Set by Mr. Gasket®, 12 Piece. 3/8-16 x 0.75". Whatever exhaust system you install on your engine, whether it’s a set of chromed headers or simply a set of cleaned up...
      # 12304596
    • (0 reviews)
      $30.94from $24.75 - $30.70
      Pontiac Firebird Esprit / Formula V8 5.0L H Engine VIN Code 1981, Seal-4-Good™ Exhaust Header Gaskets by Taylor Cable®. Don’t put up with that ominous, unmistakable “tick, tick, tick” sound of an exhaust manifold leak. If...
      # 9385448
    • (0 reviews)
      $22.80$18.24
      Pontiac Firebird Esprit / Formula V8 5.0L H Engine VIN Code 1981, XX Carbon™ Exhaust Header Gaskets by Taylor Cable®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged,...
      # 9387525
    • (0 reviews)
      $11.58from $9.26 - $9.60
      Pontiac Firebird Naturally Aspirated 1981, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      # 19071512
    • (0 reviews)
      $22.48$17.98
      Pontiac Firebird 5.0L 1981, Exhaust Gasket Set by Mr. Gasket®. Port Dimensions 1.45" Width x 1.55" Height. Medium Square Race Port. Whatever exhaust system you install on your engine, whether it’s a set of chromed headers or...
      # 12304745
    • (0 reviews)
      $41.48from $33.18 - $35.74
      Pontiac Firebird 5.0L 1981, Exhaust Gasket Set by Mr. Gasket®. Whatever exhaust system you install on your engine, whether it’s a set of chromed headers or simply a set of cleaned up flat black rams horn manifolds, you’ll need...
      # 12327645
    • (0 reviews)
      $32.20$25.76
      Pontiac Firebird 5.0L 1981, MLS Exhaust Gasket by Mr. Gasket®. Whatever exhaust system you install on your engine, whether it’s a set of chromed headers or simply a set of cleaned up flat black rams horn manifolds, you’ll need...
      # 12331698
    • (0 reviews)
      $39.89$31.91
      Pontiac Firebird 5.0L 1981, Ultra-Seal™ Exhaust Gasket Set by Mr. Gasket®. Port Dimensions 1.45" Width x 1.55" Height. Medium Square Race Port.
      # 12308183
    • (0 reviews)
      $5.95from $4.76 - $6.78
      Pontiac Firebird 1981, Exhaust Flange Stud and Nut by Dorman®. Dorman’s Exhaust Flange Stud & Nut provides you with the proper flange stud and nut for replacing your manifold. Save time and energy by having the right hardware on...
      Direct replacement for a proper fit every timeDurable steel construction
      # 31711078
    • (0 reviews)
      $7.85from $6.28 - $6.52
      Pontiac Firebird 1981, Front Metal Exhaust Manifold Bolt and Spring by Dorman®. Exhaust manifold fastener kits provide a time-saving solution for repairing the manifold. Each kit is designed for direct replacement of rusted or...
      New hardware helps fix exhaust leaksDepending on the application, kits include hardware to securely attach the manifold to the exhaust system
      # 31665712
    • (0 reviews)
      $2.10from $1.68 - $2.06
      Pontiac Firebird Formula V8 1981, Clamp by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18128316
    • (0 reviews)
      $10.95$8.76
      Pontiac Firebird Formula V8 1981, Hanger by Walker®. 1 Inlet, 1 Outlet. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18147471
    • (0 reviews)
      $10.35from $8.28 - $10.04
      Pontiac Firebird 1981, Exhaust Pipe Flange Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      # 19084504
    • (0 reviews)
      $12.59$10.07
      Pontiac Firebird 1981, Exhaust Seal Ring by Victor Reinz®, Use 1 per Car. Ring Type 'E'. OEM Standard. Material: Graphite/Wire Mesh With Sleeve. Type 'E'. When you’re low on oil, coolant or some other fluid, you may be tempted to...
      # 24198284
    • (0 reviews)
      $222.89from $178.31 - $179.40
      Pontiac Firebird 1981, Universal Fit Center Catalytic Converter by Eastern®. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one, and this product is the way...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      # 17575301
    • (0 reviews)
      $25.13$20.10
      Pontiac Firebird Esprit / Formula V8 5.0L H Engine VIN Code 1981, Graph-Flex™ Exhaust Header Gaskets by Taylor Cable®. These durable header flange gaskets are composed of a graphite composition material on a malleable stainless...
      # 9381632
    • (0 reviews)
      $94.53from $75.62 - $146.90
      Universal 10 Series Delta Force Single Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 10 Series Race mufflers are a compact lightweight single chamber design that will give a noticeable sound reduction compared to open...
      # 898490
    • (0 reviews)
      $209.88from $167.90 - $267.60
      Universal 30 Series Delta Force™ 3-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These are the most powerful and the quietest professional race mufflers available. 5.00” & 6.00” thick case sizes for maximum power and...
      # 898450
    • (0 reviews)
      $132.48from $105.98 - $230.86
      Universal 40 Series Delta Force™ 2-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 40-Series mufflers offer a combination of maximum power and substantial dB-reduction compared to open headers. They are recommended for...
      # 898479
    • (0 reviews)
      $246.58$197.26
      Universal 60 Series Delta Force Stainless Steel Race Muffler by Flowmaster®, MODERATE SOUND, 4" Offset Inlet / 4" Offset Outlet, 22" Length. These are the most powerful and the quietest professional race mufflers available.
      # 3146020
    • (0 reviews)
      $390.89$312.71
      Universal Delta Force™ Aluminized Steel Low Profile Oval Tubing Race Muffler by Flowmaster®, Aggressive Sound, 3.50" Dual Inlet / 3.50" Dual Outlet, 2.75 Thick x 11" Wide x 25" Length. The low profile mufflers are Delta Flow™...
      # 898448
    • (1 reviews)
      $111.25from $89.00 - $141.66
      Universal Outlaw™ Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These mufflers are very small and lightweight. Attached directly to the collector they generally produce more power than open headers, while taking “the edge”...
      # 898456
    • (1 reviews)
      $236.09$188.87
      Universal Pro Series™ Stainless Steel Race Muffler with Turn Down by Flowmaster®, MODERATE SOUND, 6" Diameter x 16" Case Length. Laminar Flow Mufflers have applications in all forms of racing. The Cool Shell Technology makes...
      # 898465
    • (0 reviews)
      $234.83from $187.86 - $208.84
      Universal Scavenger Series Outlaw II Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing...
      # 23297627
    • (0 reviews)
      $274.15$219.32
      Universal Scavenger Series Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing applications. They...
      # 898468
    • (1 reviews)
      $112.49from $89.99 - $108.08
      Universal 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The 2-chamber design of this muffler, incorporating the patented Flowmaster Delta Flow...
      # 897054
    • (0 reviews)
      $108.85$87.08
      Universal 40 Series Original Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler that launched the success of Flowmaster. It is an aggressive sounding...
      # 897079
    • (0 reviews)
      $133.78from $107.02 - $125.92
      Universal 50 Series Delta Flow™ Muffler by Flowmaster®, MODERATE SOUND, 4" Thick x 9.75" Wide x 17" Case Length x 23" Overall Length. The 50 Series Delta Flow mufflers are designed for passenger cars. The sound characteristics...
      # 897086
    • (0 reviews)
      $174.45$139.56
      Universal 50 Series Delta Flow™ Slimline Muffler by Flowmaster®, MODERATE SOUND. The 50 Series Delta Flow Slimline mufflers are designed for passenger cars. The sound characteristics are moderate exterior sound level and minimal...
      # 897156
    • (0 reviews)
      $163.98$131.18
      Universal 60 Series Delta Flow™ Aluminized Steel Muffler by Flowmaster®, MILD SOUND, 2.25" Center Inlet / 2.25" Center Outlet, 5" Thick x 10" Wide x 13" Case Length x 19" Overall Length. The 60 Series increases horsepower and...
      # 897052
    • (0 reviews)
      $190.19$152.15
      Universal 70 Series Delta Flow™ Big Block Muffler by Flowmaster®, MILD SOUND, 5" Thick x 10" Wide x 22" Case Length x 28" Overall Length. The 70 Series Big Block II Muffler uses a longer case for increased volume and added...
      # 897109
    • (0 reviews)
      $183.63from $146.90 - $205.66
      Universal Pro Series™ Laminar Flow Muffler by Flowmaster®, MODERATE SOUND. PRO Laminar Flow mufflers have a patented core design that is characterized by efficient exhaust scavenging and minimized drone. They produce a rich, deep...
      # 897161
    • (5 reviews)
      $87.49from $69.99 - $73.44
      Universal Super 10 Series Delta Flow™ Stainless Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 5.50" Case Length x 12.50" Overall Length. If you want to be arrested, you should mount this muffler on your...
      # 897126
    • (0 reviews)
      $131.15from $104.92 - $109.49
      Universal Super 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 5" Thick x 10" Wide x 13.50" Case Length x 19.50" Overall Length. The Super 40 Series Delta Flow Mufflers are developed from the Top Ten muffler...
      # 897132
    • (2 reviews)
      $104.88from $83.90 - $94.44
      Universal Super 44 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44 has the deepest, richest, most aggressive muscle tone of all 4” street...
      # 897136
    • (0 reviews)
      $137.73from $110.18 - $178.38
      Universal Super HP-2™ Stainless Steel Performance Muffler by Flowmaster®, 4" Thick x 5" Wide. The new Super HP-2 Series muffler offers the same great performance benefits and moderate tone that you would expect from our laminar...
      # 15943155
    • (0 reviews)
      $99.60from $79.68 - $124.88
      Universal Resonator by Flowmaster®. The resonators are designed for use in conjunction with Flowmaster Mufflers for improved sound reduction and minimize interior resonance.
      # 898502
    • (11 reviews)
      $219.99$175.99
      Universal S-Type™ Stainless Steel Round Muffler by Borla®. Get increased performance and the aggressive sound of power with this Universal S-Type Muffler. This is the same style austenitic stainless steel straight through muffler...
      # 25728287
    • (0 reviews)
      $306.24from $244.99 - $469.99
      Universal XR-1™ Multicore Stainless Steel Race Muffler by Borla®. The Borla XR-1 Multi-Core Muffler was developed on the race track to quiet the most severe engine noise without restricting power. They work so well that they're...
      # 959705



    Guides & Articles
    Regardless of whether you're shopping for a simple replacement muffler that delivers original equipment (OE) sound and performance or an upgraded muffler which provides a deeper growl with increased power through freer exhaust flow, you'll see choices between "direct fit" mufflers and "universal" mufflers. In this article, we'll help you understand the differences...
    It has been a battle of the ages to make exhaust sound like it should. Having less bends or turns will not only improve the sound but also performance. A custom exhaust is always an option for the race inspired and spirited weekend warriors. Our manufactures offer everything needed to build a custom exhaust to your preference.
    Headers are installed because the stock exhaust manifolds usually flow poorly. An exhaust header has individual tubes for each exhaust port, allowing each exhaust pulse to flow unobstructed from the cylinder head. The tubes on headers are usually larger in diameter than the runners on an exhaust manifold and the tubes are mandrel bent for gradual radius bends.
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    1981 Pontiac Firebird Models
    • 1981 Pontiac Firebird Base Performance Exhaust Systems
    • 1981 Pontiac Firebird Esprit Performance Exhaust Systems
    • 1981 Pontiac Firebird Formula Performance Exhaust Systems