Search
Advanced Search
Free Shipping on eligible itemsFree Shipping on eligible items
My Cart

Dorman Walker Delphi Timken NGK Emission Control System Components

Failed an emissions test? This can be down to dozens of reasons but is largely limited to parts in the car Fuel Delivery System. Causes can be as simple as a leaking gas cap, faulty vapor canisters that trap gas vapors in the fuel return lines to damage to the EGR Valves that recirculate exhaust gasses and reduce nitrogen oxides. Increased emissions can also be down to skipping maintenance intervals with regular replacement parts like vehicle Air Filters to deliver oxygen-rich and cleansed air for better engine efficiency, and Engine Oil Filters to filter out contaminants that cause wear.

Select Your Vehicle

Filter By Part Details
Clear All
View as Grid List

Items 1-48 of 4617

Set Ascending Direction
  1. Dorman Catalytic Converter
    Dorman Front Catalytic Converter for 2011-2016 Chevrolet Cruze 1.4L L4
    Special Price $586.18 Regular Price $836.99
    Dorman
  2. Dorman Exhaust Manifold to Cylinder Head Repair Clamp
    Dorman Front Left Exhaust Manifold to Cylinder Head Repair Clamp for 1999-2015 Chevrolet Silverado 1500 4.8L 5.3L 6.0L 6.2L V8
    Special Price $62.62 Regular Price $88.99
    Dorman
  3. Dorman Exhaust Manifold to Cylinder Head Repair Clamp
    Dorman Rear Left Exhaust Manifold to Cylinder Head Repair Clamp for 1999-2017 Chevrolet Silverado 1500 4.8L 5.3L 6.0L 6.2L V8
    Special Price $65.05 Regular Price $92.99
    Dorman
  4. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2010-2018 Ram 2500 5.7L V8
    Special Price $32.66 Regular Price $46.99
    Dorman
    Out of stock
  5. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2004-2010 Saturn Vue 2.2L 2.4L L4
    Special Price $48.25 Regular Price $68.99
    Dorman
  6. Dorman PCV Valve Diaphragm
    Dorman PCV Valve Diaphragm for 2015-2016 BMW 228i xDrive 2.0L L4
    Special Price $50.62 Regular Price $71.99
    Dorman
  7. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2010-2019 Nissan Armada 5.6L V8
    Special Price $53.32 Regular Price $75.99
    Dorman
  8. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2012-2014 Chevrolet Captiva Sport 3.0L V6
    Special Price $61.81 Regular Price $87.99
    Dorman
  9. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2015-2018 Ford Transit-350 3.5L 3.7L V6
    Special Price $62.39 Regular Price $88.99
    Dorman
  10. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2006-2011 Hyundai Accent 1.6L L4
    Special Price $66.14 Regular Price $93.99
    Dorman
    Out of stock
  11. Dorman Secondary Air Injection Pump
    Dorman Secondary Air Injection Pump for 2000-2003 Pontiac Bonneville 3.8L V6
    Special Price $214.11 Regular Price $305.99
    Dorman
  12. Dorman Evaporative Emissions System Leak Detection Pump
    Dorman Evap Leak Detection Pump for 2003-2007 Dodge Caravan 2.4L L4
    Special Price $65.83 Regular Price $93.99
    Dorman
  13. Dorman Vapor Canister
    Dorman Vapor Canister for 2000-2003 GMC Yukon 4.8L 5.3L 5.7L 6.0L V8
    Special Price $178.41 Regular Price $254.99
    Dorman
  14. Dorman Catalytic Converter with Integrated Exhaust Manifold
    Dorman Front Exhaust Manifold w Catalytic Converter for 2005-2008 Honda Pilot 3.5L V6
    Special Price $539.70 Regular Price $770.99
    Dorman
  15. Dorman Secondary Air Injection Pump Pulley
    Dorman Secondary Air Injection Pump Pulley for 1987-1996 Ford E-150 Econoline 5.0L 5.8L V8
    Special Price $43.68 Regular Price $61.99
    Dorman
  16. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2011-2016 Chevrolet Cruze 1.8L L4
    Special Price $43.77 Regular Price $62.99
    Dorman
  17. Dorman PCV Valve Diaphragm
    Dorman PCV Valve Diaphragm for 2010-2017 Audi Q5 2.0L L4
    Special Price $44.18 Regular Price $62.99
    Dorman
  18. Dorman PCV Valve Diaphragm
    Dorman PCV Valve Diaphragm for 2011-2017 Volkswagen Amarok 2.0L L4
    Special Price $45.09 Regular Price $63.99
    Dorman
  19. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2010-2017 Ford Fusion 2.5L 3.0L L4 V6
    Special Price $52.96 Regular Price $75.99
    Dorman
  20. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2011-2019 Ford Explorer 3.5L V6
    Special Price $52.96 Regular Price $75.99
    Dorman
  21. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2009-2013 Infiniti G37 3.7L V6
    Special Price $53.32 Regular Price $75.99
    Dorman
  22. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2011-2017 Hyundai Accent 1.6L L4
    Special Price $56.37 Regular Price $80.99
    Dorman
  23. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2004-2011 Ford Ranger 2.3L 3.0L 4.0L L4 V6
    Special Price $60.93 Regular Price $86.99
    Dorman
  24. Dorman Vacuum Switching Valve
    Dorman Vacuum Switching Valve for 2000-2004 Toyota Camry 3.0L V6
    Special Price $65.03 Regular Price $92.99
    Dorman
  25. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 1998-2008 Subaru Forester 2.5L H4
    Special Price $83.40 Regular Price $118.99
    Dorman
  26. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2002-2012 Mercedes-Benz G500 5.0L 5.5L V8
    Special Price $101.42 Regular Price $144.99
    Dorman
  27. Dorman Vapor Canister
    Dorman 911-137 Vapor Canister
    Special Price $149.57 Regular Price $213.99
    Dorman
  28. Dorman Exhaust Manifold
    Dorman Left Exhaust Manifold for 2001-2006 Chevrolet Silverado 1500 HD 6.0L V8
    Special Price $168.90 Regular Price $240.99
    Dorman
  29. Dorman Secondary Air Injection Pump
    Dorman Secondary Air Injection Pump for 2000-2004 Chevrolet Corvette 5.7L V8
    Special Price $214.11 Regular Price $305.99
    Dorman
  30. Dorman Secondary Air Injection Pump Pulley
    Dorman Secondary Air Injection Pump Pulley for 1979-1985 Chevrolet C20 Suburban 7.4L V8
    Special Price $26.28 Regular Price $37.99
    Dorman
  31. Dorman Secondary Air Injection Pump Pulley
    Dorman Secondary Air Injection Pump Pulley for 1979-1984 GMC G3500
    Special Price $26.28 Regular Price $37.99
    Dorman
  32. Dorman Vapor Canister Vent Valve
    Dorman 911-521 Vapor Canister Vent Valve
    Special Price $31.19 Regular Price $44.99
    Dorman
  33. Dorman PCV Valve Diaphragm
    Dorman 917-064 PCV Valve Diaphragm
    Special Price $34.93 Regular Price $49.99
    Dorman
  34. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 1998-2002 Saturn SC2 1.9L L4
    Special Price $37.20 Regular Price $52.99
    Dorman
  35. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2011-2012 Chevrolet Camaro 3.6L 6.2L V6 V8
    Special Price $38.31 Regular Price $54.99
    Dorman
  36. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2011-2017 Chevrolet Caprice 3.6L 6.0L V6 V8
    Special Price $38.50 Regular Price $54.99
    Dorman
  37. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2011-2019 Chevrolet Cruze 1.4L 1.6L 1.8L L4
    Special Price $38.50 Regular Price $54.99
    Dorman
  38. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2013-2017 Chevrolet Trax 1.4L 1.8L L4
    Special Price $38.50 Regular Price $54.99
    Dorman
  39. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2003-2007 Saturn Ion 2.0L 2.2L 2.4L L4
    Special Price $39.29 Regular Price $55.99
    Dorman
  40. Dorman Vapor Canister Purge Valve
    Dorman 994-013 Vapor Canister Purge Valve
    Special Price $39.45 Regular Price $55.99
    Dorman
  41. Dorman Vapor Canister Vent Solenoid
    Dorman Vapor Canister Vent Solenoid for 2006-2009 Pontiac Solstice 2.0L 2.4L L4
    Special Price $41.65 Regular Price $59.99
    Dorman
  42. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2002 Saturn L100 2.2L L4
    Special Price $42.36 Regular Price $60.99
    Dorman
    Out of stock
  43. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 1998-1999 Cadillac DeVille 4.6L V8
    Special Price $42.36 Regular Price $60.99
    Dorman
    Out of stock
  44. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2000-2005 Chevrolet Monte Carlo 3.8L V6
    Special Price $43.22 Regular Price $61.99
    Dorman
    Out of stock
  45. Dorman Exhaust Clamp
    Dorman Exhaust Clamp for 2000-2005 Ford Excursion 6.0L 7.3L V8
    Special Price $43.51 Regular Price $61.99
    Dorman
  46. Dorman PCV Valve Diaphragm
    Dorman PCV Valve Diaphragm for 2007-2016 Audi TT 2.0L L4
    Special Price $44.18 Regular Price $62.99
    Dorman
  47. Dorman Vapor Canister Purge Valve
    Dorman Vapor Canister Purge Valve for 2018 Jeep Wrangler 3.6L V6
    Special Price $44.64 Regular Price $63.99
    Dorman
  48. Dorman Vapor Canister Vent Solenoid
    Dorman 911-803 Vapor Canister Vent Solenoid
    Special Price $44.82 Regular Price $63.99
    Dorman
Page
per page
Filter By Part Details
Now Shopping by
  1. Brand
    Dorman
  2. Brand
    Walker
  3. Brand
    Delphi
  4. Brand
    Timken
  5. Brand
    NGK
Clear All
Shopping Options
Category
Part Type
  1. Catalytic Converter 6items
  2. Catalytic Converter with Integrated Exhaust Manifold 31items
  3. Diesel Exhaust Fluid (DEF) Heater 8items
  4. Diesel Particulate Filter (DPF) Gasket 2items
  5. Diesel Particulate Filter Gasket 1item
  6. EGR Cooler 55items
  7. EGR Line 30items
  8. EGR System Service Kit 4items
  9. EGR Vacuum Modulator 21items
  10. EGR Valve 110items
  11. EGR Valve Control Solenoid 13items
  12. Engine Crankcase Breather Element 16items
  13. Evaporative Emissions System Detection Pump Filter 1item
  14. Evaporative Emissions System Leak Detection Pump 353items
  15. Evaporative Emissions System Leak Detection Pump Filter 38items
  16. Exhaust Clamp 18items
  17. Exhaust Heat Shield 8items
  18. Exhaust Manifold 478items
  19. Exhaust Manifold to Cylinder Head Repair Clamp 208items
  20. Exhaust Manifold with Integrated Catalytic Converter 6items
  21. PCV Valve Diaphragm 98items
  22. PCV Valve Tubing 19items
  23. Secondary Air Injection Check Valve 72items
  24. Secondary Air Injection Pump 178items
  25. Secondary Air Injection Pump Pulley 102items
  26. Vacuum Pump 82items
  27. Vacuum Pump Repair Kit 5items
  28. Vacuum Switching Valve 115items
  29. Vapor Canister 255items
  30. Vapor Canister Purge Valve 1243items
  31. Vapor Canister Shut-Off Valve 71items
  32. Vapor Canister Vent Solenoid 963items
  33. Vapor Canister Vent Valve 7items
Sub-Brand
  1. OE Solutions 4573items
  2. TECHoice 44items
Price
$
-
Part Placement
  1. Front 28items
  2. Front Left 51items
  3. Front Right 51items
  4. Left 163items
  5. Rear 21items
  6. Rear Left 52items
  7. Rear Right 51items
  8. Right 128items
  9. Upper 1item
  10. Various 122items
Stock
  1. In Stock 4062items
  2. Out of Stock 555items
free shipping on eligible items at sixityauto.com

FAST & FREE SHIPPING
On eligible items

At SixityAuto.com, we offer free shipping on thousands of eligible items. We also ship FAST. Over 99% of all items ordered will ship within one business day. Plus, we ship from our strategically located warehouses on the East and West Coast to save precious shipping time.

100% fitment guarantee at sixityauto.com

100% FITMENT GUARANTEE
Your parts will fit as advertised

Shop with confidence, knowing that your purchase from Sixity Auto will fit your vehicle. If after purchase you determine that your part does not fit the vehicle we advertised, simply contact us to initiate a return. We want your parts to fit!

5-star customer rated at sitejabber

RAVE REVIEWS
5-Star Rated on Sitejabber

Don't take it from us - check out our feedback from our customers! Sixity Auto has partnered with Sitejabber, the industry leader in tracking customer loyalty and feedback, to bring genuine product and customer service reviews.

Plus read thousands of authentic reviews on Trustpilot, Google, Reseller Ratings, the Better Business Bureau, and more!

call sixity auto 8am to 8pm Eastern, Monday through Friday

WE'RE HERE TO HELP
(888) 679-6279
Monday through Friday, 8am-8pm Eastern

We speak your language. Our staff has decades of experience selling auto parts to enthusiasts like you. Whether it's for your car, truck, or van, we have staff on hand that can answer your questions and make sure you get the part you're looking for.

For phone sales or help with product fitment questions, our U.S.-based customer service staff in California and Indiana is available weekdays, 8am-8pm ET.

tax exempt shopping available for businesses

BUILT FOR BUSINESS
Tax-exempt shopping available

Sixity Auto works with a wide range of business customers—from repair shops and dealerships to fleet operators, government organizations, and others that purchase parts for resale or operational use.

If you are a qualified tax-exempt or resale customer, submit your documentation and we'll set you up for tax-free shopping. Check out all the details here.

military members and vets save 10% every day

MILITARY DISCOUNT
Save 10% on every purchase

Sixity Auto is proud to support our Active-Duty Service Members, Vets, and their immediate families. To show a token of our thanks, we extend a 10% discount on your entire purchase, every single day.

We use VerifyPass (formerly ID Discount) to help us manage our Military Discount program. Click here for all the details!

Sixity PaymentsSixity Payments
A+ Rated by BBBA+ Rated by BBB
SecurityMetrics card safe certification logo

© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.

© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.