HomeEmission Control > Evaporative SystemStandard Ignition CP421 Vapor Canister Vent Solenoid
Part #: CP421

Standard Ignition CP421 Vapor Canister Vent Solenoid

42 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Honda and Acura, S2000, MDX, RL, Odyssey, Pilot, and CR-V
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Vapor Canister Vent Solenoid for Honda and Acura

Standard Ignition CP421 is a vapor canister vent solenoid used in emission control systems on select Honda and Acura vehicles. It features a female connector, one rectangular connector, and male blade terminals for a direct-fit style electrical connection where the original part matches these specifications.

Key Features

  • Vapor canister vent solenoid for emission control service
  • Female connector with 1 rectangular connector interface
  • 2 male blade terminals
  • Valve contents only, with port quantity not included
  • Outer diameter requires physical part verification before installation
  • Standard Ignition CP421 replacement part

Detailed Description

Standard Ignition CP421 is built for vehicles that use a vapor canister vent solenoid in the evaporative emission control system. It is listed for applications including 1998-2005 Honda and Acura models such as Honda Accord, Civic, CR-V, Odyssey, Pilot, S2000, and Acura CL, TL, RL, and MDX. For buyers searching for a Honda Accord vapor canister vent solenoid, Acura MDX emission control valve, or Honda CR-V EVAP vent solenoid, CP421 provides a direct reference point for the correct replacement.

This part cross-references 2-28231 and 17012S0XA01 for the same application. Standard Ignition CP421 is also referenced by interchange numbers CP510 and PV452.

What It Helps Address

  • EVAP vent valve faults that trigger emission system warning lights
  • Improper canister venting during evaporative emissions operation
  • Electrical connector or terminal mismatch on the original solenoid
  • Failed bypass valve function on listed Honda and Acura applications
  • Emission control service needs on 1998-2005 Honda and Acura vehicles

Installation Notes and Tips

Verify connector style, terminal count, and physical dimensions against the original part before installation. This solenoid uses a female connector, one rectangular connector, and two male blade terminals. Confirm the outer diameter and port configuration on the vehicle side, since outer diameter requires physical part verification and port quantity is not included. Fitment includes 2000-2005 Honda S2000, 2001-2004 Acura MDX, 2000-2004 Acura RL, 1999-2004 Honda Odyssey, 2003-2004 Honda Pilot, 2001-2003 Acura CL, 1999 Acura CL, 1999-2003 Acura TL, 1998-2002 Honda Accord, 2001 Honda CR-V w/o Hose, 1998-2000 Honda CR-V, and 1998 Honda Civic.

Quality Assurance

Standard Ignition supplies this CP421 emission control component as a replacement part for listed Honda and Acura applications. Confirm all fitment details against the vehicle and original component before service.

BrandStandard Ignition
Part NumberCP421
Connector GenderFemale
Connector ShapeRectangular
ContentsValve
Outer diameter (mm)Requires Physical Part
Terminal GenderMale
Terminal TypeBlade

This part fits 42 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2005HondaS2000N/ABypass Valve
2004AcuraMDXN/ABypass Valve
2004AcuraRLN/ABypass Valve
2004HondaOdysseyN/ABypass Valve
2004HondaPilotN/ABypass Valve
2004HondaS2000N/ABypass Valve
2003AcuraCLN/A
2003AcuraMDXN/ABypass Valve
2003AcuraRLN/ABypass Valve
2003AcuraTLN/A
2003HondaOdysseyN/ABypass Valve
2003HondaPilotN/ABypass Valve
2003HondaS2000N/ABypass Valve
2002AcuraCLN/A
2002AcuraMDXN/ABypass Valve
2002AcuraRLN/ABypass Valve
2002AcuraTLN/A
2002HondaAccordN/A
2002HondaOdysseyN/ABypass Valve
2002HondaS2000N/ABypass Valve
2001AcuraCLN/A
2001AcuraMDXN/ABypass Valve
2001AcuraRLN/ABypass Valve
2001AcuraTLN/A
2001HondaAccordN/A
2001HondaCR-VN/Aw/o Hose
2001HondaOdysseyN/ABypass Valve
2001HondaS2000N/ABypass Valve
2000AcuraRLN/ABypass Valve
2000AcuraTLN/A
2000HondaAccordN/A
2000HondaCR-VN/A
2000HondaOdysseyN/ABypass Valve
2000HondaS2000N/ABypass Valve
1999AcuraCL2.3LL4N/A
1999AcuraTLN/A
1999HondaAccordN/A
1999HondaCR-VN/A
1999HondaOdysseyN/ABypass Valve
1998HondaAccordN/A
1998HondaCivicHXN/A
1998HondaCR-VN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

17012S0XA01191461092-282312M10862VPR0009600359573-1422911-760CP510CPC1129PV452

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.