Dorman 911-646 | Secondary Air Injection Check Valve

Part Number
Secondary Air Injection Valve

Fits: 04-09 Lexus GX470, 05-07 Lexus LX470, 05-09 Toyota 4Runner, 05-07 Toyota Land Cruiser, 05-07 Toyota Sequoia, 05-06 Toyota Tundra

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This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for durability and reliable performance.

BRAND: Dorman - OE Solutions


  • Lexus 2009-04, Toyota 2009-05
  • Durable construction - this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
  • Direct replacement - this secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles
  • Restores functionality - this valve is made to fit and fully restore part functionality after the original valve fails
  • Secondary Air Injection Valve
  • Secondary, Air, Injection, Check, Valve, valves


Color/FinishBlack and Silver
Inlet Size (in)0.4 in
MaterialCast Aluminum
Maximum Pressure Rating (psi)50
Outlet Size (in)0.47 in
Package Contents1 Secondary Air Injection Check Valve; Hardware; Gaskets
Valve TypeDiaphragm
Working Temperature Range-40C To 125C

No. 1Packaging Type: Box



  • BWD: EC1351
  • Toyota: 2572050011


  • 2005-2007 Toyota Sequoia - Position: N/A
  • 2005-2007 Lexus LX470 - Position: N/A
  • 2005-2007 Toyota Land Cruiser - Position: N/A
  • 2004-2009 Lexus GX470 - Position: N/A
  • 2005-2009 Toyota 4Runner - Position: N/A
  • 2005-2006 Toyota Tundra - Position: N/A
Customer Questions
Can I use Dorman parts to replace OEM parts?
Yes, Dorman parts can often be used as replacements for OEM parts, but it is important to carefully compare specifications and ensure compatibility.
How do I install Dorman shift linkage bushing?
To install a Dorman shift linkage bushing, first locate the old bushing and remove it if necessary. Apply lubricant to the Dorman bushing and slide it onto the shift linkage, tapping it into place with a soft tool until fully seated. Check the alignment and function of the shift linkage after installation.
Where is Dorman manufactured?
Dorman is a global automotive parts supplier with manufacturing facilities in the United States, Mexico, Canada, China, and India. Its headquarters and largest manufacturing facility are located in Colmar, Pennsylvania, USA.
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Compatible Vehicles

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