1981 Audi 4000 Exhaust Systems
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MagnaFlow®Pre-OBDII Direct Fit Round Body Catalytic ConverterAudi 4000 with PRE-OBDII Standard 1981, Pre-OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With 1 O2 Sensor Port. Catalytic Inlet Diameter: 2"....$1,142.00 - Davico®Direct Fit Catalytic ConverterAudi 4000 1981, Catalytic Converter by Davico®. Converter Configuration: Direct Fit. Position: Center. Catalytic Converter Overall Length: 11.375". This direct-fit catalytic converter by Davico will be a great solution to replace your...$154.74
- MagnaFlow®Pre-OBDII Universal Fit Round Body Catalytic ConverterAudi 4000 with PRE-OBDII Standard 1981, Pre-OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2"....$560.00
- MagnaFlow®Standard Direct Fit Catalytic ConverterAudi 4000 1981, Standard Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. With Pre-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2". Catalytic Converter Overall...$252.00
- MagnaFlow®Standard Universal Fit Round Body Catalytic ConverterAudi 4000 1981, Standard Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet...$99.00
- Walker®CalCat™ Universal Fit Round Body Catalytic ConverterAudi 4000 1981, CalCat™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without O2 Sensor Port. Catalytic Converter Overall Length: 12". Specifically designed to comply...$414.14 - $530.48
- iD Select®Standard Universal Fit Round Body Catalytic ConverterAudi 4000 1981, Standard Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2"....$22.07
- AP Exhaust®Standard Duty Universal Fit Round Body Catalytic ConverterAudi 4000 1981, Standard Duty Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet...$80.78
- CATCO®Pre-OBDII Universal Fit Round Body Standard Duty Catalytic ConverterAudi 4000 with California Emission / Federal Emission, Converter 1981, Pre-OBDII Standard Duty Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2...$143.15
- Walker®Ultra™ Universal Fit Round Body Catalytic ConverterAudi 4000 1981, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 11.5"....$82.49
- Eastern Catalytic®Standard Universal Fit Round Body Catalytic ConverterAudi 4000 1981, Standard Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter:...$111.56
- Fel-Pro®Exhaust Manifold Gasket SetAudi 4000 1981, Exhaust Manifold Gasket Set by Fel-Pro®. OEM Style, Multi-Piece. 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...Ensures reliable sealing performanceMade using advanced technologies and molded rubber chemistry$11.11
- Fel-Pro®3-Bolt Exhaust Pipe Flange GasketAudi 4000 1981, 3-Bolt 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 fitEnsures reliable sealing performance$6.05
- BRExhaust®Exhaust Pipe Flange GasketAudi 4000 1981, Exhaust Pipe Flange Gasket by BRExhaust®. BRExhaust has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quickly and easily. Choose BRExhaust, and...Constructed for a hassle-free exhaust repairEnsures a precise fit$2.18
- Mahle®Composite Exhaust Manifold Gasket SetAudi 4000 1981, Composite Exhaust Manifold Gasket Set by Mahle®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...High quality at an affordable priceExpertly made from premium materials$8.52
- Elring®Exhaust Manifold GasketAudi 4000 1981, Exhaust Manifold Gasket by Elring®. For professional repairs, place your trust in gaskets, gasket sets and service parts from Elring - the reliable and experienced supplier of spare parts to original equipment standard....OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$1.02
- Elwis®Exhaust Manifold GasketAudi 4000 1981, Exhaust Manifold Gasket by Elwis®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...High quality at an affordable priceExpertly made from premium materials$1.13
- Victor Reinz®Fiber and Metal Exhaust Manifold Gasket SetAudi 4000 1981, Fiber and Metal Exhaust Manifold Gasket Set by Victor Reinz®. OEM Style, Multi-Piece. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...High quality at an affordable priceExpertly made from premium materials$0.91
- HJS®Triangular Catalytic Converter GasketAudi 4000 1981, Triangular Catalytic Converter Gasket by HJS®. Location: Manifold to Converter. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...High quality at an affordable priceExpertly made from premium materials$5.03
- BRExhaust®Exhaust ClampAudi 4000 1981, Exhaust Clamp by BRExhaust®. BRExhaust has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quickly and easily. Choose BRExhaust, and you'll get...Constructed for a hassle-free exhaust repairEnsures a precise fit$4.38
- Beck Arnley®Exhaust Pipe to Manifold GasketAudi 4000 1981, Exhaust Pipe to Manifold Gasket by Beck Arnley®. When investing in this superior product by Beck Arnley, expect to get the exact OEM look, function, and fit. The product was developed to stringent factory specifications...Matches OE form, fit and functionMade from premium materials$3.79 - $12.95
- Febi®Copper Non-Shouldered Exhaust NutAudi 4000 1981, Copper Non-Shouldered Exhaust Nut by Febi®. Non Shouldered. Self Locking. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...High quality at an affordable priceExpertly made from premium materials$1.20
- Bosch®Narrow-band Oxygen SensorAudi 4000 1981, Narrow-band Oxygen Sensor by Bosch®. Position: Upstream. The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen...OE-EquivalentOE Style connectors and wire lengths$21.55
- Walker Products®Oxygen SensorAudi 4000 1981, Oxygen Sensor by Walker Products®. Position: Upstream. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...High quality at an affordable priceExpertly made from premium materials$25.13
- Bosch®Premium Narrow-band Oxygen SensorAudi 4000 1981, Premium Narrow-band Oxygen Sensor by Bosch®. Position: Upstream. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an Oxygen Sensor...OE Identical ConnectorCompact Design$36.23
- Walker Products®Premium Oxygen SensorAudi 4000 1981, Premium Oxygen Sensor by Walker Products®. Position: Upstream. Location: B1S1 Sensor. Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet or exceed all original equipment...Improved Engine Response & PerformanceLower Emissions$40.98
- NTK®Oxygen SensorAudi 4000 1981, Oxygen Sensor by NTK®. Position: Upstream. Thimble type sensors feature a ceramic element that projects into the exhaust system and becomes electrically conductive at high temperature. The sensor element then sends...Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement$24.46
- Delphi®Oxygen SensorAudi 4000 1981, Oxygen Sensor by Delphi®. Position: Front. As one of the leading suppliers of oxygen sensor technology since 1978, Delphi planar technology is the result of their OE and aftermarket engineers partnering together to...Resists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long lifePatented sensors construction and design$45.12
- AP Exhaust®Enforcer Series Aluminized Steel Round Glass Pack Exhaust MufflerUniversal Enforcer Series Aluminized Steel Round Glass Pack Exhaust Muffler by AP Exhaust®. Muffler Structure: Straight-through. Muffler Configuration: Center - Center. Today’s exhaust performance market continues to cover a broad...Aluminized materials for superior corrosion protectionIdeal for the economy buyer$13.46 - $38.58
- iD Select®ECO II Universal Fit Catalytic ConverterUniversal ECO II Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Catalytic Converter Overall Length: 16". Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select....$144.22 - $146.77
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SLP® - Loud Mouth™ Stainless Steel Round Bullet-Type Silver Exhaust Resonator (2.5" Center ID, 2.5" Center OD, 14" Length)Posted by Robert (Monroe, WI) / November 20, 20222000 Dodge Dakota
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