HomeEmission Control > Vacuum SystemStandard Ignition DV178 Diverter Valve
Part #: DV178

Standard Ignition DV178 Diverter Valve

17 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Lexus and Toyota, GX470, 4Runner, Land Cruiser, Sequoia, and Tundra
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Overview of Standard Ignition Diverter Valve DV178

The Standard Ignition DV178 diverter valve is designed for reliable emission control in select Lexus and Toyota vehicles. This vacuum system component helps maintain proper engine performance by managing air flow within the emission system.

  • Compatible with Lexus GX470 and Toyota 4Runner, Land Cruiser, Sequoia, and Tundra models
  • Part number DV178 ensures precise fitment and function
  • Essential component in the vehicle's vacuum emission control system
  • Manufactured to meet OEM specifications for durability and performance

Detailed Product Description

The Standard Ignition DV178 diverter valve plays a critical role in the emission control vacuum system of various Lexus and Toyota vehicles. It regulates the flow of vacuum pressure to reduce emissions and support engine efficiency. This diverter valve is engineered to match original equipment standards, providing consistent operation and compatibility with the emission control system of the 4Runner, GX470, Land Cruiser, Sequoia, and Tundra. Using the correct part number DV178 ensures proper installation and system functionality.

Common Applications and Issues Addressed

  • Helps prevent rough idling caused by vacuum leaks
  • Reduces emission system error codes related to vacuum control
  • Supports proper operation of the evaporative emission system
  • Mitigates engine performance issues linked to faulty diverter valves
  • Assists in maintaining compliance with emission regulations

Installation Notes and Tips

  • Verify vehicle compatibility with Lexus GX470 or Toyota 4Runner, Land Cruiser, Sequoia, or Tundra before installation
  • Ensure all vacuum lines are clean and free of damage prior to installing the DV178 diverter valve
  • Follow manufacturer torque specifications when securing the valve
  • Inspect related emission control components during replacement to avoid future issues

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The DV178 diverter valve undergoes rigorous quality control testing to maintain consistent function within the emission control system. Warranty coverage details are provided by Standard Ignition and typically cover defects in material and workmanship under normal use.

BrandStandard Ignition
Part NumberDV178
Connector ShapeOval
Hose Size - Inches3/4
Hose Size - mmRefer to Inches
Terminal TypeBlade

This part fits 17 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009LexusGX470N/A
2009Toyota4Runner4.7LV8N/AMain Unit; Under Intake Manifold
2008LexusGX470N/A
2008Toyota4Runner4.7LV8N/AMain Unit; Under Intake Manifold
2007LexusGX470N/A
2007Toyota4Runner4.7LV8N/AMain Unit; Under Intake Manifold
2007ToyotaLand CruiserN/AMain Unit; Under Intake Manifold
2007ToyotaSequoiaN/AMain Unit; Under Intake Manifold
2006LexusGX470N/A
2006Toyota4Runner4.7LV8N/AMain Unit; Under Intake Manifold
2006ToyotaLand CruiserN/AMain Unit; Under Intake Manifold
2006ToyotaSequoiaN/AMain Unit; Under Intake Manifold
2006ToyotaTundraN/AMain Unit; Under Intake Manifold
2005LexusGX470N/A
2005Toyota4Runner4.7LV8N/AMain Unit; Under Intake Manifold
2005ToyotaSequoiaN/AMain Unit; Under Intake Manifold
2005ToyotaTundraN/AMain Unit; Under Intake Manifold

* 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:

2-39493257105002060099961911-644DVVC20004EC6057

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