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AUDI A4 Exhaust

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Results 1 - 13 of 13

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MagnaFlow Universal Catalytic Converters

MagnaFlow universal catalytic converters by Car Sound form the basic building blocks for many applications. The main benefit of universal catalytic converters is that one unit may cover a wide variety of vehicle makes and models. Installing universal converters often requires the use of welding, cutting, and tube-bending equipment that is readily available to most professional installers. They are extremely well made, with features such as: * A ribbed body that minimizes expansion and distortion when the converter heats up. They form a channel that protects the cushioning mat from direct exposure to exhaust gasses, and hold the ceramic catalyst in proper alignment. * A 1/2 in. lap joint where the necks meet the body. The neck does not extend into the converter body, where it could hamper exhaust flow. * Manufactured with separate dies on different sized inlets. Putting larger neck sizes on smaller bodies would reduce the flow of the converter and the quality of the product. * A monolithic honeycomb catalyst. The ceramic is designed for maximum flow and surface area. The coating method is strictly controlled to maintain exact specifications. * Seam-welded close to the converter body for a strong, tight bond. Welding along the edge could allow the converter to expand like the folds in an accordion, allowing the catalyst to move around. * Heavier-gauge stainless steel, tip-to-tip. They do not use inferior mixed weights and materials. * An aluminized or stainless OEM-style ribbed heat shield that creates a rigid wall of protection against heat and adds to the structural stability of the converter.

4.62 out of 5 stars ( 186 )

$159.29

$197.00

AP Exhaust Universal Catalytic Converters

AP Exhaust universal catalytic converters will work to make your vehicle energy efficient and environmentally friendly. They're built with 409 stainless steel shell and neck construction for longer life, and feature AP's "Clean by Design" premium-grade ceramic substrates for maximum pollution reduction. Offering comprehensive coverage, AP Exhaust can provide universal catalytic converters with lower emissions, long-term reliability, and an easier install. The growing concern for the environment means there is a growing need for quality emission control products. AP Exhaust universal catalytic converters offer the quality, fit, and value to meet those concerns.

3.5 out of 5 stars ( 6 )

$123.99

$231.99

Walker Resonators

Walker resonators can provide your existing exhaust system with some additional sound control. These "mini muffler" units are often positioned and tuned to complement the style of vehicle--sports car or luxury sedan, for instance. The resonators are made from quality materials and can be easily installed inline with any exhaust system. Choose the model that best matches your vehicle specs.

4.45 out of 5 stars ( 141 )

$270.99

Cardone Remanufactured Smog Air Pumps

Get economical replacement parts with guaranteed performance—Cardone remanufactured smog air pumps! Cardone disassembles, cleans, and replaces worn components and tests their smog pumps so you receive like-new quality at a much lower price. Bearings are 100 percent new and tested for proper installation. New carbon shoes and vanes are installed, and high-temperature grease is used to extend bearing life and the life of the pump. Recycling used parts keeps them from ending up in a landfill! Cardone remanufactured smog air pumps are good for you and good for the environment. Order the model designed for fitment with your vehicle application.

5.0 out of 5 stars ( 1 )

$171.99

$189.99

Walker Exhaust Intermediate Pipes

Walker pre-bent intermediate pipes are manufactured and designed for durability with precision benders. The then fixture checked to ensure a precise fit for quick and easy installation. Hundreds of configurations are available for most domestic and import applications from the 1950s and up. Select the size, material, and other options recommended for your vehicle.

4.45 out of 5 stars ( 319 )

$117.99

$123.99

AP Exhaust ANSA Intermediate Pipes

AP Exhaust ANSA intermediate pipes are durable, high-quality factory replacements that will satisfy the most hard-to-fit import vehicle. They meet or exceed industry standards, are fully compatible with factory components, and are engineered to install accurately every time. AP Exhaust ANSA intermediate pipes will service your exhaust with 100 percent aluminized steel construction, re-aluminized weld seam to prevent corrosion, and a direct-fit design for an original equipment fit and appearance.

Not Yet Reviewed

$129.99

Dorman AIR Check Valves

These Dorman A.I.R check valves are direct replacements for your OE A.I.R check valve. Dorman has been an industry leader in producing quality replacement parts and continues to strive for excellence. When you're trying to get your vehicle back on the road, look no further than Dorman.

5.0 out of 5 stars ( 4 )

$194.99

BRExhaust Direct-Fit Intermediate Pipes

BRExhaust exhaust pipes are designed for easy bolt-on installation. Thicker gauge metal prevents the need for flow-resistant wrinkle bends, thereby enhancing overall exhaust performance. Each direct-fit aluminized steel pipe is engineered to meet OE specs, ensuring performance, reliability, and a precise factory-like fit. Whether you need a front pipe, intermediate pipe, or downpipe, BRExhaust carries a wide range of replacement exhaust components to service countless applications.

4.5 out of 5 stars ( 8 )

$142.99

$164.99

Catco Universal-Fit Catalytic Converters

Catco universal-fit catalytic converters offer great features, including aluminized steel heat shields (many have dual shields), 409 stainless steel shells, 16-gauge stainless steel pipes and nipples, and a heat-resistant sealed mat—all of which help the converters last longer. These converters are designed so that you can add one to any vehicle that wasn't originally equipped with one. Many models have steel air tubes with numerous perforations to help distribute the airflow evenly without robbing power, and most have slip-fit connections for an easy installation. Choose the inlet/outlet diameters needed for your application.

4.67 out of 5 stars ( 18 )

$163.99

Walker Quiet-Flow Mufflers

Walker Quiet-Flow mufflers are designed to increase airflow and performance over your OEM muffler. These replacements are manufactured from aluminized steel or stainless steel for maximum durability. Their turbo-style configuration provides sound control without decreasing exhaust flow. Available for cars, trucks, and SUVs, Quiet-Flow mufflers will make an excellent choice for your vehicle. Order the size, shape, and inlet/outlet configuration designed for your specific vehicle application.

4.2 out of 5 stars ( 46 )

$206.99

Standard Motor A.I.R. Diverter Valves

Air injection systems include certain safety checks which prevent exhaust from forcing its way back toward the pump, or from overloading the manifold. Standard Motor A.I.R. diverter valves are one such component. These replacements are manufactured from durable materials, built to factory specs, and will easily install in the stock location. If your bypass, diverter, or check valve is damaged or missing, find the Standard Motor part to fit your specific make and model.

5.0 out of 5 stars ( 1 )

$259.99

Go Fast Bits Mach 2 TMS Recirculating Diverter Valves

Go Fast Bits offers Mach 2 TMS Recirculating Diverter Valves for a variety of vehicles. It's the simple and essential modification for 30 percent quicker boost—utilizing proven TMS (Turbo Management System) technology to ensure dependable boost holding and optimum throttle response. If you don't need the patented venting bias adjustment feature of the Respons or Deceptor Pro, the Mach 2 is your answer. It's configured as a 100 percent recirculating valve (i.e. bypass, plumb back), and add-on kits are also available to convert to 100 percent atmosphere venting. Use the recirc model for direct factory replacement when you want the performance without the noise—or add the conversion kit when you want some noise with your performance! Factory bypass valves have two main shortcomings: they're typically designed to start opening above a certain pressure to protect the engine, and they're not optimized for throttle response. And you can't vent them to atmosphere without stalling your engine. The Mach 2 solves all of these issues. It can effectively hold unlimited boost (unlimited in that no turbo could ever produce enough pressure to damage it), and the TMS technology ensures maximum throttle response. And you CAN vent with the atmo conversion to atmosphere without stalling your engine. Product notes: * Recirculation model for direct factory replacement for performance without the noise * Atmosphere venting kits to convert the recirculating valve if you want noise with your performance * Like the Respons and Deceptor Pro II, the Mach 2 is available in a range of bolt-on kits for most popular turbo models * No additional adaptors, parts or vehicle modifications are required—simply remove the factory bypass valve and replace it with the Mach 2; it's that simple!

5.0 out of 5 stars ( 2 )

$172.80

BRExhaust Direct-Fit Front Pipe Kits

BRExhaust direct-fit front pipe kits are engineered for OEM exhaust replacement and each kit exemplifies top-tier quality and durability. Crafted from premium stainless steel, these front pipes are meticulously engineered to seamlessly replace the factory component, meeting or exceeding original specifications. The direct-fit design ensures a straightforward bolt-on installation process. For your convenience, BRExhaust direct-fit front pipe kits include all essential components, such as gaskets, clamps, and necessary hardware. With a strong dedication to upholding factory standards, these BRExhaust front pipes guarantee a hassle-free restoration of your exhaust system to its original form and function. Select the direct-fit pipe kit designed for your application needs.

Not Yet Reviewed

$221.99

$224.99

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