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The Best Automotive Replacement Emission Control Relays

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Emission control relays are critical components that manage the flow of air and fuel in your vehicle's exhaust system. A malfunctioning relay can lead to poor engine performance, increased emissions, and costly repairs. Ensuring you select a high-quality replacement relay is essential for maintaining your car's efficiency and environmental compliance.

Looking for the best Automotive Replacement Emission Control Relays?

Discover now our comparison of the best Automotive Replacement Emission Control Relays. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Automotive Replacement Emission Control Relays are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Automotive Replacement Emission Control Relays in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1
Standard Motor Products RY117T Emission Control Relay
  • Item Package Dimension: 2.5L x 2.5W x 2.5H inches
  • Item Package Weight - 0.2 Pounds
  • Item Package Quantity - 1
  • Product Type - RELAY
No. 2
GM Genuine Parts 84880436 Emission Reduction Fluid Control Module
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
No. 3
Emission Control Relay - Compatible with 1997-2006 Audi A8 Quattro 4.2L V8
  • OE
  • Compatible with or fits: 2005 - 2006 Audi A8 Quattro 4.2L V8 | 1997 - 2004 Audi A8 Quattro
  • Emission Control Relay
  • Review Description to Ensure Proper Fit
No. 4
Dwvksz 1Pcs Emission Control Relay Replaces# 42330 for Volkswagen Quantum 2.2L 1983 1984 1985 1986 1987, for...
  • Vehicle Applications: Dwvksz 1Pcs Emission Control Relay Replaces# 42330 for Volkswagen Quantum 2.2L 1983 1984 1985 1986 1987, for Volkswagen Quantum 1.6L 1982 1983 1984 1985, for Volkswagen Quantum 1.7L 1982 1983
  • Vehicle Applications: Dwvksz 1Pcs Emission Control Relay Replaces# 42330 for Volkswagen Quantum 1.8L 1984 1985
  • Replace Numbers: 42330
  • Contents of the Package: 1 piece Emission Control Relay
  • Important Note: Please use Amazons vehicle fitment tool (located at the top of the listing on desktop, below the images on mobile) Cheack the VIN or year/make/model/trim/engine of your car
No. 6
V23134-K59-X312 61.36-8 373 700/01 12VDC 5Pin Plug-in Mini ISO Car Air Suspension Relay 1 Form A (2 x pin 87)
  • Limiting continuous currents 60/40A at the NO/NC contacts.
  • Dimensional characteristics and the functional allocations of the plug-in terminals to ISO 7588 part 1.
  • 12VDC versions with contact gap > 0.8 mm.
  • Typical applications: Ignition lock Lamp load (headlights) Cooling fan ABS Exhaust emission control Cross carline up to 60 A Fuel pump Engine cooling fan A/C blower A/C compressor clutch Also available for 42 V applications.
  • Package include: 1 pack electrical relays.
No. 7
ACDelco Gold 212-480 (19113322) Emission Control Multi Function Relay
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
SaleNo. 8
GELUOXI DY-876 Diesel Glow Plug Control Relay Module Glow Plug Switch Replacement for 1999-2010 Ford F250 F...
  • 🚗【OEM Part Number】: Diesel Glow Plug Control Module: DY-876 YC3512B533AA, YC3Z12B533AA, 904282, DY876, RY467, 1R1391, 904-282
  • 🚗【Compatibility】: Diesel Glow Plug Control Module Replacement for All 2003-2010 6.0L Powerstroke; Replacement for 2008-2010 6.4L Powerstroke; Replacement for 2000-2003 7.3L Powerstroke Truck with Emissions Only; Replacement for 2000-2003 7.3L...
  • 🚗【Direct Fit Replacement】: Our Glow Plug Control Module Is Engineered To Perfectly Replace The Original Module In Your Powerstroke Diesel, Ensuring A Hassle-Free Installation And Compatibility With Various Models.
  • 🚗【Durable Construction】: Built With High-Quality Materials, Our Module Withstands Extreme Temperature Fluctuations And Harsh Engine Environments, Guaranteeing Long-Lasting Performance And Reliability.
  • 🚗【After Purchase】: Within 6 Months, Should You Encounter Any Issues With This Glow Plug Control Module, Our Dedicated Team Is Always Ready To Assist You, Ensuring Your Satisfaction And Optimal User Experience. Please Check The Adaptability...
No. 9
(Pack of 2) 4RA007791-20#645 Automotive Relay 12VDC 40A 4 Pins SPST(NO) - Compatible with V23136-B1-X...
  • Automotive RelaCompatibility: Compatible with part numbers: 4H0951253A, V23136-B0006-X080, V23136-B1-X142, 8D0951253A, 8K0951253, and V23134-B52-X336, ensuring proper fitment.y 645 2PCS
  • Widely Used: 4RA007791-20#645 Automotive relays are widely used in a variety of automotive systems, such as headlight loads, cooling fans, emission controls, and more.
  • High Contact Voltage and Coil Capacity: Handles high contact voltage and large coil capacity for reliable performance in high-current applications.
  • Easy Installation: Direct plug-in design facilitates hassle-free installation, saving time and reducing wiring complexity.
  • High Quality: The relays are made of high quality materials to ensure quality and reliability to keep your car performing at its best!
No. 10
QKYS 2PCS 12088567 8567 Automotive Relay, High-Performance 12VDC 30A 4Pin Fuse Box Relays, 12088567 8567 GM...
  • 【Compatible】Replaceable part numbers: 12088567, 12135170, 13502679, 13500114, 19116057, 15328866, 19115083, 19115080, 15393412, 22867702, our relays are suitable for Buick, Cadillac, Chevrolet, GMC, Pontiac, etc.
  • 【Operating Temperature】12088567 8567 automotive relays have strong high temperature resistance and can operate stably at temperatures from -40°C to 125°C, making them ideal for engine compartments and harsh automotive environments.
  • 【Coil Voltage】The coil voltage of this 4-pin power relay is 12 VDC and can handle a maximum current of 20A. These parameters enable it to operate stably in the complex voltage environment of the vehicle, avoiding failure or damage caused by parameter...
  • 【Durable Quality】This 4-pin power relay is made of high-quality materials, with fast conductivity and ultra-long durability, providing uninterrupted power control in the harshest road environments
  • 【Installation method】This 12088567 4-pin relay can be seamlessly plug-and-play, without tools or wiring. Its pin definition and installation dimensions are precisely matched with the vehicle's relay socket, and can directly replace the original relay

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Last update on 2026-04-16 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Automotive Replacement Emission Control Relays

Key Factors When Choosing an Emission Control Relay

When replacing an emission control relay, consider these crucial factors to ensure optimal performance and longevity.
  • Vehicle Compatibility: This is paramount. Always verify that the replacement relay is specifically designed for your vehicle's make, model, and year. Check the part number against your vehicle's original component or consult a reliable parts catalog. Using an incompatible relay can lead to system malfunctions and potential damage.
  • Quality and Durability: Opt for relays made from high-quality materials that can withstand the harsh under-hood environment, including heat, vibration, and moisture. Reputable brands often use superior internal components and robust housing to ensure reliable operation over time. Look for relays that meet or exceed OEM specifications for peace of mind.
  • Electrical Specifications: Ensure the relay's voltage, amperage, and terminal configuration match the original part. Incorrect electrical ratings can cause the relay to fail prematurely or even damage other electronic components in your vehicle's emissions control system.

Frequently Asked Questions

What are the symptoms of a failing emission control relay?
Common signs include a check engine light illumination, rough idling, poor fuel economy, and increased exhaust emissions. Your vehicle might also experience hesitation during acceleration or fail emissions tests.
Can I use a universal emission control relay?
While universal relays exist, it's generally not recommended for emission control systems. These systems are precisely calibrated, and a universal part may not meet the exact specifications required for your vehicle, potentially causing performance issues or system damage.
How often should emission control relays be replaced?
Emission control relays are typically designed for long service life and do not have a scheduled replacement interval. They should only be replaced when they fail or show signs of malfunction, as indicated by your vehicle's diagnostic system or performance issues.
What is the function of an emission control relay?
This relay acts as an electronic switch, controlling the operation of various components within the vehicle's emissions control system. It helps regulate processes like exhaust gas recirculation (EGR) or evaporative emission control (EVAP) systems to reduce pollution.