Best Automotive Performance Emission Systems Deals of Nov 2026

Updated November 10, 2026Our site contains affiliate links for which we may be compensated.
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aFe Power #TR-2015B-1R Takeda Open Element Intake | Stage-2 Cold Air Intake System w/ Pro 5R Filter for Lexus RC 350 15-25/RC 300 16-25/GS 350 13-20 V6-3.5L

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Zoro See New
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LELEHOKA Exhaust Flex Y Pipe Kit Compatible for Jeep Cherokee 2019-2022 3.2L | Includes Gaskets & Clamp QA547125411

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Rislone 4720 Cat Complete Fuel, Exhaust, Emissions System Cleaner, 1-Pack | Cleans Catalytic Converter, Reduces Emissions & Saves Gas, 16.9 oz

Increase power, performance, mileage and save gas: Cleans by not only the entire emissions and exhaust system, but the fuel system as well. Works with gasoline, ethanol and hybrid vehicles.
Save on expensive fuel system and emission control repairs: Regular use every 5,000 miles tunes-up the fuel, emissions and exhaust systems keeping them clean and preventing the CEL light from returning.
Will not void manufacturer’s new vehicle warranty: Specifically designed and safe to use on vehicles which have oxygen sensors and catalytic converters. Exceeds EPA compliance performance criteria.
Works on all fuel injected, direct injected, carbureted, turbo, GTDI, Ecotec and EcoBoost engines.
DON'T GAMBLE ON AN UNPROVEN BRAND: A leaking engine, head gasket, cooling system, power steering or transmission is your one shot to avoid a bigger repair bill – reach for the brand proven for over 75 years
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CRC Guaranteed to Pass Emissions System Cleaner Fuel Additive - 12 oz | Fuel System Cleaner, Emissions Reduction, Engine Fuel System Cleaning, Improved Fuel Economy, Pre-Smog-Test

GUARANTEED TO PASS: CRC's Guaranteed to Pass Emissions Test Formula reduces your car's emissions and improves power; performance; and fuel economy in one treatment.
ADVANCED FORMULA: This product uses a powerful detergent to soften and dissolve sludge in the fuel system; removing deposits and residue.
APPLICATIONS: Advanced detergent formula for use in all cars; SUVs; trucks; and hybrids using gasoline or ethanol blends. Safe for all gasoline engines including Direct Injection (GDI) or Port Injection (PI); with or without turbochargers or superchargers.
PRODUCT SPECIFICATIONS: Guaranteed To Pass comes in a 12 fl oz bottle.
CRC INDUSTRIES: A market leader that offers impeccably designed chemical solutions to maintain; protect and repair different marine; heavy-duty motor vehicles; industrial-grade engines; household tools and electrical equipment.
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Dorman

Dorman 310-219 Evaporative Emissions System Leak Detection Pump | Fits Select Models

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Dorman

Price Below Average

Dorman 310-215 Evaporative Emissions System Leak Detection Pump | Fits Select Models

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Rislone 4784 Crystal Clean Diesel DEF & SCR Emission System Cleaner, 1-Pack | Improves DEF Diesel Exhaust Fluid, Restores SCR Selective Catalyst Reduction, Cleans DEF Injector & Sender, 11.8 oz

Excellent for diesel vehicles driven regularly at slow speeds, low loads, short durations or make frequent stops as these are more prone to having the problem of crystallization deposit build up in the SCR system.
Regular use every 5,000 miles not only keeps the system clean, but works to prevent the white crystallization issues from returning.
Will not void manufacturer’s new vehicle warranty. Specifically designed and safe to use on vehicles which have DOC catalytic converters, DPF particulate filters, SCR selective catalytic reduction devices, ASC ammonia slip catalyst or DEF / AdBlue systems.
Works with all AdBlue, Aria 32 (Automotive Nitrogen Oxide Liquid Reducing Agent), AUS 32 (Aqueous Urea Solution), BlueHDi, BlueTEC, Cummins, DEF UREA, Duramax, EcoDiesel, PowerStroke, TDI Clean Diesel, and many more.
DEF Crystal Clean is specifically designed to only be installed in the Diesel Exhaust Fluid / AdBlue tank which usually has a blue cap. Do not add to the diesel fuel tank.
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EZ PASS™ Emissions Treatment | Catalytic Converter & O2 Sensor Cleaner | Emissions System Support | Smog Test Prep | 16 Fl oz

ONE-STEP USE. Pour one bottle into a full tank. This fuel system treatment helps clean the catalytic converter, oxygen sensors, combustion chamber, and injectors during normal driving.
SMOG & EMISSIONS SUPPORT. Supports emissions system efficiency before smog or state inspections. Helps reduce carbon buildup that may contribute to increased exhaust emissions.
OBD SUPPORT. Assists with certain emissions-related diagnostic trouble codes linked to catalytic converter and oxygen sensor efficiency when used as directed.
ENGINE EFFICIENCY. Helps reduce carbon deposits that can restrict exhaust flow and impact fuel economy. Supports smoother operation and combustion performance.
TREATMENT. Each 16 fl. oz. bottle treats up to 16 gallons of gasoline. Add to a full tank and drive at highway speed. Use every 2,000 miles for maintenance.
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Our #1 Pick Today
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aFe Power #TR-2015B-1R Takeda Open Element Intake | Stage-2 Cold Air Intake System w/ Pro 5R Filter for Lexus RC 350 15-25/RC 300 16-25/GS 350 13-20 V6-3.5L

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Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

9 Automotive Performance Emission Systems deals are available from: Amazon, starting from $16.99.

The lowest price we found is $16.99 while the highest is $420.00. Prices for the best Automotive Performance Emission Systems deals average at $108.80.