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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.

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  1. Rein Exhaust Manifold Stud
    Rein HWB0058 Exhaust Manifold Stud
    Special Price $2.54 Regular Price $3.99
    Rein Auto Parts
    Out of stock
  2. Rein Exhaust Manifold Stud
    Rein Exhaust Manifold Stud for 1985-1988 Audi 5000 2.2L 2.3L L5
    Special Price $9.66 Regular Price $13.99
    Rein Auto Parts
    Out of stock
  3. Rein Exhaust Manifold Stud
    Rein Exhaust Manifold Stud for 1985-1988 Volkswagen Quantum 2.2L L5
    Special Price $9.66 Regular Price $13.99
    Rein Auto Parts
    Out of stock
  4. Rein Exhaust Manifold Stud
    Rein Exhaust Manifold Stud for 1985-1987 Audi Coupe 2.2L 2.3L L5
    Special Price $9.66 Regular Price $13.99
    Rein Auto Parts
    Out of stock
  5. Rein Exhaust Manifold Stud
    Rein Exhaust Manifold Stud for 1985-1986 Audi 4000 2.2L L5
    Special Price $9.66 Regular Price $13.99
    Rein Auto Parts
    Out of stock
  6. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2007-2008 Volkswagen Eos 3.2L V6
    Special Price $13.66 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  7. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2007-2010 Audi Q7 3.6L V6
    Special Price $13.66 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  8. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2020-2022 Volkswagen Atlas Cross Sport 3.6L V6
    Special Price $13.66 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  9. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2009-2010 Volkswagen Passat CC 3.6L V6
    Special Price $13.66 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  10. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2004-2009 Audi TT Quattro 3.2L V6
    Special Price $13.66 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  11. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2007-2017 Volkswagen Touareg 3.6L V6
    Special Price $13.66 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  12. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2009-2017 Volkswagen CC 3.6L V6
    Special Price $13.94 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  13. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2006-2009 Audi A3 Quattro 3.2L V6
    Special Price $13.94 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  14. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2018-2022 Volkswagen Atlas 3.6L V6
    Special Price $13.94 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  15. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2004 Volkswagen R32 3.2L V6
    Special Price $13.94 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  16. Rein Exhaust Manifold Stud
    3 pc Rein Exhaust Manifold Studs for 2006-2018 Volkswagen Passat 3.6L V6
    Special Price $13.94 Regular Price $19.99
    Rein Auto Parts
    Out of stock
  17. Rein Exhaust Manifold Stud
    4 pc Rein Exhaust Manifold Studs for 1990-1993 Volkswagen Cabriolet 1.8L L4
    Special Price $15.76 Regular Price $22.99
    Rein Auto Parts
    Out of stock
  18. Rein Exhaust Manifold Stud
    4 pc Rein Exhaust Manifold Studs for 1992-1994 Volkswagen EuroVan 2.5L L5
    Special Price $15.76 Regular Price $22.99
    Rein Auto Parts
    Out of stock
  19. Rein Exhaust Manifold Stud
    4 pc Rein Exhaust Manifold Studs for 1988-1991 Audi 90 2.0L 2.3L L4 L5
    Special Price $15.76 Regular Price $22.99
    Rein Auto Parts
    Out of stock
  20. Rein Exhaust Manifold Stud
    4 pc Rein Exhaust Manifold Studs for 1993-2013 Volkswagen Golf 1.8L 2.0L L4
    Special Price $15.76 Regular Price $22.99
    Rein Auto Parts
    Out of stock
  21. Rein Exhaust Manifold Stud
    4 pc Rein Exhaust Manifold Studs for 1990-2005 Volkswagen Jetta 1.8L 2.0L L4
    Special Price $16.08 Regular Price $22.99
    Rein Auto Parts
    Out of stock
  22. Rein Exhaust Manifold Stud
    4 pc Rein Exhaust Manifold Studs for 1988-1992 Audi 80 2.0L 2.3L L4 L5
    Special Price $16.08 Regular Price $22.99
    Rein Auto Parts
    Out of stock
  23. Rein Exhaust Manifold Stud
    4 pc Rein Exhaust Manifold Studs for 1989-1991 Audi 100 2.3L L5
    Special Price $16.08 Regular Price $22.99
    Rein Auto Parts
    Out of stock
  24. Rein Exhaust Manifold Stud
    5 pc Rein Exhaust Manifold Studs for 1998-2001 Volkswagen Beetle 2.0L L4
    Special Price $18.22 Regular Price $25.99
    Rein Auto Parts
    Out of stock
  25. Rein Exhaust Manifold Stud
    5 pc Rein Exhaust Manifold Studs for 1999-2001 Volkswagen Golf 2.0L L4
    Special Price $18.22 Regular Price $25.99
    Rein Auto Parts
    Out of stock
  26. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1995-2000 Volkswagen EuroVan 2.5L 2.8L L5 V6
    Special Price $19.95 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  27. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1995-2002 Volkswagen Cabrio 2.0L L4
    Special Price $19.95 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  28. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1987-2006 Volkswagen Golf 1.8L 2.0L 2.8L L4 V6
    Special Price $19.95 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  29. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1986-2005 Volkswagen Jetta 1.8L 2.0L 2.8L L4 V6
    Special Price $19.95 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  30. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1986-1988 Volkswagen Scirocco 1.8L L4
    Special Price $19.95 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  31. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1990-1997 Volkswagen Passat 2.0L 2.8L L4 V6
    Special Price $20.36 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  32. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1992-1995 Volkswagen Corrado 2.8L V6
    Special Price $20.36 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  33. Rein Exhaust Manifold Stud
    6 pc Rein Exhaust Manifold Studs for 1999-2005 Volkswagen Beetle 1.8L L4
    Special Price $20.36 Regular Price $28.99
    Rein Auto Parts
    Out of stock
  34. Rein Exhaust Manifold Stud
    8 pc Rein Exhaust Manifold Studs for 2001-2003 Volkswagen EuroVan 2.8L V6
    Special Price $26.11 Regular Price $36.99
    Rein Auto Parts
    Out of stock
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    Exhaust Manifold Stud
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  1. Catalytic Converter 7items
  2. Catalytic Converter Air Tube 122items
  3. Catalytic Converter Gasket 270items
  4. Catalytic Converter with Integrated Exhaust Manifold 31items
  5. Diesel Emissions Fluid (DEF) Hose 5items
  6. Diesel Emissions Fluid Filler Cap 23items
  7. Diesel Exhaust Fluid (DEF) Filler Cap 2items
  8. Diesel Exhaust Fluid (DEF) Heater 12items
  9. Diesel Exhaust Fluid (DEF) Module 3items
  10. Diesel Particulate Filter (DPF) Gasket 2items
  11. Diesel Particulate Filter Gasket 1item
  12. EGR Cooler 55items
  13. EGR Line 30items
  14. EGR System Service Kit 4items
  15. EGR Tube Clamp 4items
  16. EGR Vacuum Modulator 21items
  17. EGR Valve 245items
  18. EGR Valve Control Solenoid 13items
  19. EGR Valve Gasket 1504items
  20. Engine Crankcase Breather Cap 1517items
  21. Engine Crankcase Breather Element 304items
  22. Engine Crankcase Breather Gasket 4items
  23. Engine Crankcase Breather Hose 898items
  24. Engine Crankcase Breather Hose Kit 18items
  25. Engine Crankcase Vent Valve 112items
  26. Evaporative Emissions System Detection Pump Filter 1item
  27. Evaporative Emissions System Leak Detection Pump 381items
  28. Evaporative Emissions System Leak Detection Pump Filter 38items
  29. Exhaust Bolt 20items
  30. Exhaust Bolt and Spring 424items
  31. Exhaust Bracket 111items
  32. Exhaust Clamp 5400items
  33. Exhaust Clamp Kit 1item
  34. Exhaust Elbow 14items
  35. Exhaust Flange 78items
  36. Exhaust Flange Repair Kit 5items
  37. Exhaust Flange Stud and Nut 230items
  38. Exhaust Gas Recirculation (EGR) Cooler Gasket 6items
  39. Exhaust Gas Recirculation (EGR) Tube Clamp 1item
  40. Exhaust Gas Recirculation (EGR) Tube Gasket 25items
  41. Exhaust Gas Recirculation (EGR) Valve 65items
  42. Exhaust Gas Recirculation (EGR) Valve Control Solenoid 10items
  43. Exhaust Gas Recirculation (EGR) Valve Gasket 138items
  44. Exhaust Gas Recirculation (EGR) Valve Spacer Plate Gasket 1item
  45. Exhaust Heat Shield 8items
  46. Exhaust Heat Shield Bolt 2items
  47. Exhaust Intermediate Pipe 44items
  48. Exhaust Manifold 478items
  49. Exhaust Manifold Gasket 97items
  50. Exhaust Manifold Gasket Set 2567items
  51. Exhaust Manifold Hardware Kit 249items
  52. Exhaust Manifold Heat Exchanger Gasket 5items
  53. Exhaust Manifold Heat Shield Bolt 2items
  54. Exhaust Manifold Stud 34items
  55. Exhaust Manifold to Cylinder Head Repair Clamp 208items
  56. Exhaust Manifold with Integrated Catalytic Converter 6items
  57. Exhaust Muffler 1076items
  58. Exhaust Muffler Assembly 28items
  59. Exhaust Muffler Clamp 160items
  60. Exhaust Muffler Strap 126items
  61. Exhaust Nut 1item
  62. Exhaust Pipe 54items
  63. Exhaust Pipe Connector 54items
  64. Exhaust Pipe Flange Gasket 8218items
  65. Exhaust Pipe Rain Cap 4items
  66. Exhaust Pipe Spout 127items
  67. Exhaust Reduction Pipe 19items
  68. Exhaust Resonator 21items
  69. Exhaust Resonator and Pipe Assembly 11items
  70. Exhaust System Hanger 660items
  71. Exhaust System Hanger Insulator 2010items
  72. Exhaust Tail Pipe 5items
  73. Exhaust Tail Pipe Clamp 4items
  74. Exhaust Y Pipe 15items
  75. Muffler / Exhaust Putty 2items
  76. Oxygen Sensor Bung Plug 54items
  77. PCV Valve 1858items
  78. PCV Valve Diaphragm 98items
  79. PCV Valve Grommet 76items
  80. PCV Valve Hose 3items
  81. PCV Valve Tubing 19items
  82. Secondary Air Injection Check Valve 72items
  83. Secondary Air Injection Hose 9items
  84. Secondary Air Injection Pump 182items
  85. Secondary Air Injection Pump Hose 12items
  86. Secondary Air Injection Pump Pulley 102items
  87. Vacuum Hose 95items
  88. Vacuum Line 17items
  89. Vacuum Pump 108items
  90. Vacuum Pump Repair Kit 5items
  91. Vacuum Switching Valve 152items
  92. Vapor Canister 268items
  93. Vapor Canister Purge Solenoid 44items
  94. Vapor Canister Purge Valve 1442items
  95. Vapor Canister Shut-Off Valve 71items
  96. Vapor Canister Vent Hose 2items
  97. Vapor Canister Vent Solenoid 987items
  98. Vapor Canister Vent Valve 7items
Price
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Pack Size
  1. 1 5items
  2. 3 11items
  3. 4 7items
  4. 5 2items
  5. 6 8items
  6. 8 1item
Part Placement
  1. Various 1item
Stock
  1. Out of Stock 34items
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