2018 Chevy Impala Exhaust Systems
Select Your Submodel
- Dorman®Stainless Steel Natural Exhaust Manifold with Integrated Catalytic ConverterChevy Impala 3.6L with California Emission, PZEV Standard 2018, Natural Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by Dorman®. Color: Natural. Header Coating: Uncoated. More like a complete kit than a single...Includes heat-shield for protection of hoses, wiring, and other engine componentsConstruction protects against warping and/or cracking$383.51 - $429.58
- Eastern Catalytic®ECO GM Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterChevy Impala 3.6L with California Emission 2018, ECO GM Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged manifold, this product is the right...Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor$427.17 - $451.63
- Dorman®Cast Iron Natural Exhaust ManifoldChevy Impala 2.5L 2018, Cast Iron Natural Exhaust Manifold by Dorman®. This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. It includes all...Ideal replacement - this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehiclesReliable construction - durable materials resist warping, cracking and leaking for long-lasting performance$84.09
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterChevy Impala 2.5L without PZEV Standard 2018, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Position: Front. If your car needs replacement, install one that will get you through the smog check. This...$489.00
- AERO Exhaust®TR Series 304 Stainless Steel Round Performance Exhaust ResonatorChevy Impala 2018, TR Series 304 Stainless Steel Round Performance Exhaust Resonator by AERO Exhaust®. Resonator Sound: Moderate. Resonator Configuration: Center - Center. The TR Series Resonators are the most popular resonators AERO...$59.99 - $65.99
- Walker®Replacement Exhaust KitChevy Impala 3.6L 2018, Replacement Exhaust Kit by Walker®. If you are looking for the ultimate in quality and value, then this superior replacement exhaust kit by Walker is what you need. All its components are designed with precision...Mufflers and Resonators Designed for OE equivalent sound and precision fitOE-style louvered tube technology for a premium, factory-like sound$123.09 - $389.68
- DIY Solutions®Direct Fit Catalytic ConverterChevy Impala 3.6L 2018, Catalytic Converter by DIY Solutions®. Converter Configuration: Direct Fit. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should...$674.17
- TRQ®Direct Fit Catalytic ConverterChevy Impala 3.6L 2018, Catalytic Converter by TRQ®. Converter Configuration: Direct Fit. Position: Front Rearward. Made with quality in mind, this high-grade TRQ exhaust manifold fits right away without any trouble. It is built using...$274.95Save: $16.50 (6%)$258.45
- Eastern Catalytic®ECO GM Direct Fit Catalytic ConverterChevy Impala 2.5L 2018, ECO GM Catalytic Converter by Eastern Catalytic®. Converter Configuration: Direct Fit. Position: Front. Without O2 Sensor Port. Catalytic Converter Overall Length: 12.5". If you need to replace your failed or...$291.67
- AERO Exhaust®Turbine XL Series Round Performance Exhaust Muffler with Integrated ResonatorChevy Impala 2018, Turbine XL Series Round Performance Exhaust Muffler with Integrated Resonator by AERO Exhaust®. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.5". Muffler Body Length: 20". Muffler Overall Length: 26"....$169.99
- AERO Exhaust®AR Series 304 Stainless Steel Round Performance Exhaust ResonatorChevy Impala 2018, AR Series 304 Stainless Steel Round Performance Exhaust Resonator by AERO Exhaust®. Resonator Body Length: 10". Resonator Overall Length: 14". Resonator Sound: Aggressive / Loud. Resonator Configuration: Center -...$59.99
- Dorman®Exhaust Manifold Hardware KitChevy Impala 2.5L 2018, Exhaust Manifold Hardware Kit by Dorman®. Dorman manifold bolt and spring kits are just what you need to secure the front flange. Dorman offers products like fasteners and solutions to keep your vehicle running...Direct replacement for a proper fitBuilt to Last$13.98
- AERO Exhaust®Turbine Series Round Performance Exhaust MufflerChevy Impala 2018, Turbine Series Round Performance Exhaust Muffler by AERO Exhaust®. Muffler Inlet Diameter: 2.5". Muffler Outlet Diameter: 2.5". Muffler Body Length: 14". Muffler Overall Length: 20". Muffler Sound: Aggressive / Loud....$149.99
- CATCO®Direct Fit Catalytic ConverterChevy Impala 2018, Catalytic Converter by CATCO®. Converter Configuration: Direct Fit. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition....$314.71 - $447.72
- CATCO®OBDII Universal Fit Round Body Enhanced Catalytic ConverterChevy Impala 3.6L with California Emission / Federal Emission, PZEV Standard 2018, OBDII Enhanced Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Position: Rear. Catalytic Converter Body Shape: Round. Without Air...$172.60
- ACDelco®Genuine GM Parts™ Cast Iron Exhaust ManifoldChevy Impala 2.5L 2018, Genuine GM Parts™ Cast Iron Exhaust Manifold by ACDelco®. Collector Outlet Diameter: 1.57" (40.00 mm). Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$166.38Save: $24.96 (15%)$141.42
- CATCO®Select Plus Tech Series OBDII Universal Fit Round Body Catalytic ConverterChevy Impala 3.6L with California Emission / Federal Emission, PZEV Standard 2018, Select Plus Tech Series OBDII Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Position: Rear. Catalytic Converter Body Shape:...$644.78
- iD Select®ECO GM Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterChevy Impala 3.6L with California Emission 2018, ECO GM Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$363.54 - $397.24
- Patriot Exhaust®Sprint Style Exhaust Header Weld-Up KitChevy Impala 2018, Sprint Style Exhaust Header Weld-Up Kit by Patriot Exhaust®. Collector Outlet Diameter: 3". This superior Patriot Exhaust product is just for you. Carefully designed for maximum performance, is will more than just...Expertly crafted from premium materialsQuality design and workmanship$243.08 - $305.95
- Patriot Exhaust®Steel Hi-Temp Black Coated Tight Tuck Street Rod Exhaust HeadersChevy Impala 2018, Steel Hi-Temp Black Coated Tight Tuck Street Rod Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 2.5". Color: Black. Header Coating: Ceramic. This superior Patriot...Expertly crafted from premium materialsQuality design and workmanship$455.89
- MagnaFlow®Street Series™ Stainless Steel Cat-Back Exhaust System with Split Rear ExitChevy Impala Premier 2018, Street Series™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit by MagnaFlow®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main Tubing Diameter: 2.5". Exhaust System...$1,241.00
- Walker®Perforated Metal with Fiber Core and Fire Ring 2-Bolt Exhaust Pipe Flange GasketChevy Impala 3.6L 2018, Perforated Metal with Fiber Core and Fire Ring 2-Bolt Exhaust Pipe Flange Gasket by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with...Makes installation quick and easyOptimal OE-style fit and quality$3.44
- Walker®Aluminized Steel Exhaust Y-PipeChevy Impala 3.6L 2018, Aluminized Steel Exhaust Y-Pipe by Walker®. Main Piping Diameter: 2.25". If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe...Designed to directly replace the factory partConstructed with OEM type connections$154.46
- Fel-Pro®Exhaust Manifold Gasket SetChevy Impala 3.6L 2018, 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...Ensures reliable sealing performanceMade using advanced technologies and molded rubber chemistry$8.66
- ACDelco®Genuine GM Parts™ Exhaust Manifold GasketChevy Impala 2.5L 6T45 Transmission 2018, Genuine GM Parts™ Exhaust Manifold Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised....Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$10.49Save: $1.55 (15%)$8.94
- Mahle®Exhaust Manifold GasketChevy Impala 2.5L 2018, Exhaust Manifold Gasket 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 needs and...High quality at an affordable priceExpertly made from premium materials$14.81
- Mahle®Exhaust Manifold Gasket SetChevy Impala 3.6L 2018, 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 needs...High quality at an affordable priceExpertly made from premium materials$7.18
- Patriot Exhaust®Exhaust Header GasketsChevy Impala 2018, Exhaust Header Gaskets by Patriot Exhaust®. This superior Patriot Exhaust product is just for you. Carefully designed for maximum performance, is will more than just meet your needs and expectations. This product is...Manufactured from thick, tear resistant materialSpecifically cut to match all Patriot Exhaust headers$56.05
- Patriot Exhaust®Percy's Seal-4-Good™ Exhaust Header GasketsChevy Impala 2018, Percy's Seal-4-Good™ Exhaust Header Gaskets by Patriot Exhaust®. The Percy's Seal-4-Good Reusable Flange Gaskets are multi-layered and made from a special "Dead Soft" Aluminum, which conforms to header flanges for...Special "dead soft" aluminum conforms to flange to make an excellent sealSolid metal gasket will not blow out$45.85
- Walker®Heavy Duty Steel Natural U-Bolt ClampChevy Impala 3.6L 2018, Heavy Duty Steel Natural U-Bolt 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....Makes installation quick and easyOptimal OE-style fit and quality$2.24 - $2.45
Shop By Service Type
Popular Products
2018 Chevy Impala Exhaust Reviews
1 review
Posted by Customer / March 15, 20202018 Chevy Silverado 1500