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The Best Auto Emission System & Accessories - 2022

Last updated on April 5, 2022

We looked at the top 7 Auto Emission System & Accessories and dug through the reviews from 10 of the most popular review sites including and more. The result is a ranking of the best Auto Emission System & Accessories.

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Our Picks For The Top Auto Emission System & Accessories

Show Contents
Our Take
Experts Included
Pros
Cons
  Top Pick

Dorman 310-601 Leak Detection Pump Auto Emission System

Don't Waste Your Money Seal of Approval

Dorman

310-601 Leak Detection Pump Auto Emission System

Overall Take

Detects Gas Vapor ProblemsYou can rely on this leak-detection pump to get the job done.

Experts Included
DWYM Tools Experts plus . Along with user reviews from Amazon.
  Runner Up

Dorman 310-219 Leak Detection Pump Auto Emission System

Dorman

310-219 Leak Detection Pump Auto Emission System

Overall Take

Quality-Made PartVehicle owners and mechanics trust this brand for quality products.

Experts Included
DWYM Tools Experts plus . Along with user reviews from Amazon.
  We Also Like

Yinlowa Canister Vent Control Solenoid Auto Emission System

Yinlowa

Canister Vent Control Solenoid Auto Emission System

Overall Take

Premium DurabilityMany users say this canister works better than the factory part and is less expensive and easy to install.

Experts Included
DWYM Tools Experts plus . Along with user reviews from Amazon.
  Strong Contender

FOXWELL NT201 Diagnostic Code Reader Auto Emission Accessory

FOXWELL

NT201 Diagnostic Code Reader Auto Emission Accessory

Overall Take

Diagnostics For DIY MechanicsWith this tool, imagine how easy it’ll be to diagnose exactly what is wrong with your car.

Experts Included
DWYM Tools Experts plus The Drive, OBD Advisor, Auto Nexted, Land Rover Bar, Garage Dreams, Car Audio Now. Along with user reviews from Amazon and Walmart.
Pros
" The device has a simple yet convenient LCD screen and an audible indicator. It's easy to use and allows for quick readings. Even better, the scanner features a sturdy casing, and it's protected against dust and impact. It's very durable,..."
Cons
"Chinese-language updates. Imprecise instructions."
Don't just take for granted what one reviewer says. Along with our own experts, DWYM analyzes the top expert reviews of the leading products and generates a score you can actually trust.
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Products Considered

We identified the majority of the auto emission system & accessories available to purchase.
7

Products Analyzed

We then selected the leading and most popular products for our team to review.

View All Product Rankings

10

Expert Reviews Included

In addition to our expert reviews, we also incorporate feedback and analysis of some of the most respected sources including: The Drive, Best Synthetic Oil Guide, Ride Digest, Gear Huts, OBD Advisor.

67,558

User Opinions Analyzed

We also incorporate user reviews from the leading retailers including

Our experts reviewed the top 7 Auto Emission System & Accessories and also dug through the reviews from 10 of the most popular review sites including and more. The result is a ranking of the best of the best Auto Emission System & Accessories.

DWYM is your trusted roduct review source. Our team reviews thousands of product reviews from the trusted top experts and combines them into one easy-to-understand score. Learn more.

Don't Waste Your Money Seal of Approval
Look for the DWYM seal for products that are the best in their category.

The Best Overall

Dorman 310-601 Leak Detection Pump Auto Emission System

User Summarized Score

9.0
153 user reviews

Our Take

Dorman’s aftermarket leak-detection pump is made to sense evaporative emissions leaks. The pump measures 5.1 inches by 4.8 inches by 3.9 inches, and you can use it to replace similar parts on compatible make and model vehicles. It is manufactured and backed by industry experts and boasts a long service life.


The Best Bang For Your Buck

Dorman 310-219 Leak Detection Pump Auto Emission System

User Summarized Score

9.2
689 user reviews

Our Take

Made by Dorman, this 310-219 leak detection pump is at just the right price. You can swap it for an original part that has failed or become clogged over time.

Overall Product Rankings

Our Auto Emission System & Accessory Findings


Dorman 310-601 Leak Detection Pump Auto Emission System

What We Liked: Dorman’s aftermarket leak-detection pump is made to sense evaporative emissions leaks. The pump measures 5.1 inches by 4.8 inches by 3.9 inches, and you can use it to replace similar parts on compatible make and model vehicles. It is manufactured and backed by industry experts and boasts a long service life.


Dorman 310-219 Leak Detection Pump Auto Emission System

What We Liked: Made by Dorman, this 310-219 leak detection pump is at just the right price. You can swap it for an original part that has failed or become clogged over time.


Yinlowa Canister Vent Control Solenoid Auto Emission System

What We Liked: Compatible with specific Infiniti and Nissan models, this replacement vapor canister vent valve promises a smoother, more efficient operation of the EVAP system. It can even prevent those annoying system codes from showing up!


FOXWELL NT201 Diagnostic Code Reader Auto Emission Accessory

What We Liked: Foxwell’s high-tech vehicle diagnostic scan tool is professional-grade quality. It has an auto code reader that can let you know what kinds of problems your car is having, including issues with emissions. It decodes the information for you in a snap.


Dorman 46076 Vapor Separator Tube Auto Emission System

What We Liked: Dorman’s evaporative emissions system line works with Ford and Lincoln emission systems, and it can quickly restore yours to its original functionality. It is designed to fit perfectly on the specified brands and models listed.

Our Auto Emission System & Accessory Buying Guide

Gasoline-powered vehicles produce fumes that evaporate from fuel tanks, leading to hydrocarbon pollution. This pollution is why many vehicles, especially older ones, have to go through those emission-check facilities from time to time. If you weren’t aware, the pollution continues to go into the atmosphere even when engines are not running.

A vehicle’s evaporative emission control system (EVAP) prevents gas vapors from leaking out into the air from the fuel system and fuel tank. Lest you think this is new-age environmentalism in action, regulations have required these EVAP systems on gas-powered cars and trucks since the 1970s.

An EVAP system usually has a fuel tank, a vapor-storage canister, hoses, valves, vent lines and a fuel-tank gas cap. Those lines travel from the fuel tank to the canister, where they are trapped and stored. Once the engine is warmed up, the vapors are drawn into the intake manifold, where the engine burns them off. You may need to replace any of the working parts when the system malfunctions.

The signs of EVAP system problems include the infamous “Check Engine” light, a worrying gasoline smell in or outside the vehicle, a loss of engine performance, and increased gas consumption. Remember that any of these can also be red flags for other issues. Electric devices can diagnose EVAP problems; mechanics use them, but you can also buy one of your own as long as you know how to use it properly.

Should you need to purchase replacement EVAP parts, you can always get them from your vehicle’s manufacturer and have one of their mechanics install them. You’ll likely be paying top dollar for these services, though.

Buying aftermarket auto parts will save you a lot of money, but make sure that they are compatible with your vehicle. Some of the manufacturers have online tools where you can input your make and model to see if the part will work. If you aren’t comfortable installing these parts, buy them yourself and have a licensed mechanic do it.

DWYM Fun Fact

Every time you take your car for a state emissions test, the technicians hook it to a computer for what’s called an on-board diagnostics (OBD) test; this is also referred to as a DSL test. These measure a vehicle’s engine-control module (ECM) efficiency.

The ECM continuously monitors a vehicle’s exhaust system and catalytic converter and checks for basic exhaust emissions and evaporative emissions. If yours fails, you’ll have a deadline for repairing it and getting it rechecked.

The Auto Emission System & Accessory Tips and Advice

  • Before buying aftermarket auto parts, check with the dealer first to see what they charge for them; that way, you’ll have a baseline when shopping.
  • If you find the needed part but aren’t familiar with the seller, visit the company’s website, read the reviews and check their return policies.
  • Auction sites like eBay also have aftermarket auto parts, but they have no-return policies in many cases.
  • If you’ve never heard of an online parts manufacturer or outlet, look for a contact phone number and a company return policy.
  • Know how engines work before buying anything. In this case, find a diagram of a vehicle EVAP system and go from there.