1991 Buick Roadmaster Performance Exhaust Systems

1 - 60 of 15201 of 03
show:
sort by:
    • (0 reviews)
      $83.20$66.56
      Buick Roadmaster Federal Emission 1991, 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...
      # 868853
    • (0 reviews)
      $131.90$105.52
      Buick Roadmaster 1991, 290 Series Stainless Steel Oval Catalytic Converter by Flowmaster®, 2.25" Inlet / 2.25" Outlet. 16.5" Length. 7.25" Width. Includes Heat Shield, 4 Bolt Flanges. The new Flowmaster replacement catalytic...
      # 869248
    • (0 reviews)
      $164.88from $131.90 - $309.58
      Buick Roadmaster 1991, 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...
      # 49466701
    • (0 reviews)
      $153.13$122.50
      Buick Roadmaster 1991, Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use advanced manufacturing...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      # 36757247
    • (0 reviews)
      $49.99$39.99
      Buick Roadmaster 1991, Header Gasket Set by BBK®. These premium steel core graphite gaskets are flexible for a long lasting leak-proof seal even when cylinder head and header flange surfaces aren’t perfectly flat. They can...
      # 55185016
    • (0 reviews)
      $193.54$154.83
      Buick Roadmaster 1991, Passenger Side Exhaust Manifold by Dorman®. Round Port. Material: Cast Iron. Bolt Hole Quantity: 6. With Installation Hardware. Includes: Exhaust Manifold, 1 Manifold Gasket and 1 Flange, 2 Studs, 2 Nuts....
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      # 16495050
    • (0 reviews)
      $151.20$120.96
      Buick Roadmaster 1991, Direct Fit Catalytic Converter by Walker®. Body Dimensions - 13" L x 7.5" W x 4.5" H, Material - SS (Body) / Ceramic (Substrate), Body Shape - Large Oval, Direct Fit, Connection Type - Pipe Inlet Connection...
      Emission Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
      # 17743451
    • (0 reviews)
      $100.49from $80.39 - $119.22
      Buick Roadmaster 1991, 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
      # 17725118
    • (0 reviews)
      $84.35$67.48
      Buick Roadmaster 1991, Quiet-Flow™ SS Muffler by Walker®. Body Material - Stainless Steel, Color / Finish - Aluminized, Dimensions - 19" L x 9.75" W x 4.25" H, Oval Shape, Inlet Diameter - 2.5" ID, Outlet Diameter - 2.5" ID,...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      # 35438527
    • (0 reviews)
      $47.78$38.22
      Buick Roadmaster 1991, SoundFX™ Direct Fit Muffler by Walker®. Body Material - Steel, Color / Finish - Aluminized, Dimensions - 19" L x 9.75" W x 4.25" H, Oval Shape, Inlet Diameter - 2.5" ID, Outlet Diameter - 2.5" ID, Inlet...
      Designed to deliver ultimate performance and pleasing sound qualityOE-equivalent direct-fit design
      # 18171111
    • (0 reviews)
      $40.25$32.20
      Buick Roadmaster 1991, SoundFX™ Universal Muffler by Walker®. Body Material - Steel, Color / Finish - Aluminized, Dimensions - 18" L x 9.75" W x 4.25" H, Oval Shape, Inlet Diameter - 2.25" ID, Outlet Diameter - 2.25" ID, Inlet...
      Designed to deliver ultimate performance and pleasing sound qualityUniversal fit – may require a few modifications to install
      # 18174261
    • (0 reviews)
      $35.58from $28.46 - $31.71
      Buick Roadmaster 1991, SoundFX Resonator 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
      # 18171943
    • (0 reviews)
      $43.60$34.88
      Buick Roadmaster 1991, Tru-Fit Universal Fit Muffler by Walker®. Body Material - Steel, Color / Finish - Aluminized, Dimensions - 18" L x 8.813" W x 4.25" H, Oval Shape, Inlet Diameter - 2.5" ID, Outlet Diameter - 2.5" ID, Inlet...
      Economical performance and acousticsUniversal fit allows for greater installation flexibility
      # 18182215
    • (0 reviews)
      $68.66$54.93
      Buick Roadmaster 1991, Resonator Assembly by Walker®. Material - Steel, Finish - Aluminized, 1st Body Dimensions - 14" L x 4" W x 4" H, 1st Body Shape - Round, 21" Overall Length, 1 Inlets, 2.25" Inlet Diameter, Inlet Connection...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18166029
    • (0 reviews)
      $20.65$16.52
      Buick Roadmaster 1991, Extension Pipe by Walker®. Finish - Aluminized, 2.5" Pipe Diameter, 24.5" Overall Length, 1 Inlets, 2.5" Outside Inlet Diameter, Inlet Connection Type - Pipe Connection, 1 Outlets, 2.25" Outside Outlet...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18131702
    • (0 reviews)
      $26.25$21.00
      Buick Roadmaster 1991, Intermediate Pipe by Walker®. Finish - Aluminized, 2.5" Pipe Diameter, 43" Overall Length, 1 Inlets, Inlet Connection Type - Spherical Flare, 1 Outlets, 2.5" Outside Outlet Diameter, Outlet Connection Type -...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18157835
    • (0 reviews)
      $35.93$28.74
      Buick Roadmaster 1991, Tail Pipe by Walker®. Finish - Aluminized, 2.25" Pipe Diameter, 14.125" Overall Length, 1 Inlets, 2.25" Outside Inlet Diameter, Inlet Connection Type - Pipe Connection, 1 Outlets, 2.25" Outside Outlet...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18179977
    • (0 reviews)
      $78.58$62.86
      Buick Roadmaster 1991, Y-Pipe by Walker®. Finish - Aluminized, 18.375" Overall Length, 2 Inlets, Inlet Connection Type - 2 Bolt Loose Flange with Spherical Flare, 1 Outlets, 2.25" Outside Outlet Diameter, Outlet Connection Type -...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      # 18183473
    • (0 reviews)
      $32.60from $26.08 - $30.70
      Buick Roadmaster V8 5.0L E Engine VIN Code 1991, 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 it isn’t leaking...
      # 9382068
    • (0 reviews)
      $22.80$18.24
      Buick Roadmaster V8 5.0L E Engine VIN Code 1991, XX Carbon™ Exhaust Header Gaskets by Taylor Cable®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel....
      # 9385770
    • (0 reviews)
      $8.38from $6.70 - $8.87
      Buick Roadmaster 1991, Metal Exhaust Manifold Studs and Nuts by Dorman®, 6 Pieces. Dorman’s Exhaust Manifold Hardware Kit provides you with the proper studs, bolts, and nuts for replacing your manifold. Save time and energy by...
      Direct replacement for a proper fit every timeDurable steel construction
      # 31543016
    • (0 reviews)
      $12.00$9.60
      Buick Roadmaster 1991, 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 engineering resources, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      # 19063419
    • (0 reviews)
      $11.00$8.80
      Buick Roadmaster 1991, Flange by Walker®. Finish - Bare, 2 Bolt Flange Flange Type, 1 Inlet, 1 Outlet. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18132642
    • (0 reviews)
      $12.45$9.96
      Buick Roadmaster 1991, Exhaust Flange Stud and Nut by Dorman®, 1 Piece. Front. This is an aftermarket part that replaces factory OE # 10220453, 11518860, 11589264, 15028620, 15096144, 15708209, 15712163, 15756879, 88891750,...
      Direct replacement for a proper fit every timeDurable steel construction
      # 31659015
    • (0 reviews)
      $11.05$8.84
      Buick Roadmaster 1991, Bracket 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 job. When...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18119311
    • (0 reviews)
      $2.10from $1.68 - $2.37
      Buick Roadmaster 1991, 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 Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18120366
    • (0 reviews)
      $13.11$10.49
      Buick Roadmaster 1991, Gasket by Walker®. Material - Sintered Iron, Donut Style, 0.291" Thickness, Port Dimensions - 1.99" L x 1.99" W, 1 Inlet, 1 Outlet. With their extensive selection of accessories and hardware for the exhaust...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18145064
    • (0 reviews)
      $16.24$12.99
      Buick Roadmaster 1991, 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 job. When you...
      Makes installation quick and easyOptimal OE-style fit and quality
      # 18145871
    • (0 reviews)
      $222.56$178.05
      Buick Roadmaster 1991, Universal Fit Center Standard Catalytic Converter by Eastern Catalytic®. 16" Overall Length. ECO CARB. 2.25" ID. 2.25" OD. Keep your exhaust emissions within specifications and your vehicle running in top...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      # 38838759
    • (0 reviews)
      $25.13$20.10
      Buick Roadmaster V8 5.0L E Engine VIN Code 1991, Graph-Flex™ Exhaust Header Gaskets by Taylor Cable®. These durable header flange gaskets are composed of a graphite composition material on a malleable stainless steel core....
      # 9379878
    • (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)
      $108.85from $87.08 - $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)
      $168.74from $134.99 - $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
    • (3 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
    • (12 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
    • (1 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
    • (1 reviews)
      $262.49$209.99
      Universal Heavy Duty Stainless Steel Round Muffler by Borla®, 3" Center Inlet / 3" Center Outlet. Get increased performance and the aggressive sound of power with this Heavy Duty Stainless Steel Round Muffler. This muffler includes...
      # 25728296
    • (1 reviews)
      $96.74from $77.39 - $123.90
      Universal CFT Superflow™ Oval Muffler by Gibson®. Get optimum usable power and a deep powerful sound with a Gibson CFT Superflow Muffler. The CFT Superflow has one of the lowest restriction ratings of any muffler on the market,...
      # 2060024
    • (1 reviews)
      $105.50from $84.40 - $262.75
      Universal SFT Superflow™ Round Muffler by Gibson®. Get increased exhaust flow for more power and great sound with a Gibson SFT Superflow Muffler. The SFT Superflow has one of the lowest restriction ratings of any muffler on the...
      # 2060137
    • (0 reviews)
      $194.43$155.54
      Universal Race Muffler by Gibson®. Inspite of the large host of engineers and technicians, Gibson Performance has not lost its commitment to building cost-effective exhaust systems that deliver more performance for less spendings....
      # 26542951
    • (0 reviews)
      $206.50from $165.20 - $179.36
      Universal 8" Round Muffler by Gibson®, 3.5" Center Inlet / 3.5" Center Outlet, 24" Length. Get increased exhaust flow for more power and great sound with a Gibson Muffler. The straight through, baffled and chambered design gives...
      # 26542948
    • (1 reviews)
      $156.24from $124.99 - $169.99
      Universal Installer Series™ Aluminized Steel Round Muffler by MBRP®. Short on space under your car for a muffler? A round muffler might just be the ticket to tuck in around a drive shaft or up near the cats. Choose whether you...
      Round form factor for tight spots16GA aluminized steel
      # 3724354
    • (0 reviews)
      $281.24$224.99
      Universal Pro Series™ T304 Stainless Steel Round Muffler by MBRP®. Your car is for show and go; add a little show with this polished T304 stainless steel muffler from MBRP. The mirror finish won’t ever peel, flake or corrode....
      # 14446428



    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.