HomeEmission Control > EGR and Related ComponentsDorman 668-001 Exhaust Gas Recirculation (EGR) Cooler
Part #: 668-001

Dorman 668-001 Exhaust Gas Recirculation (EGR) Cooler

⚙️ 16 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Toyota, Prius, Prius Plug-In, and Prius V
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Durable Stainless Steel EGR Cooler for Toyota Prius Models

The Dorman 668-001 Exhaust Gas Recirculation (EGR) Cooler is engineered specifically for Toyota Prius, Prius Plug-In, and Prius V models. Constructed from corrosion-resistant stainless steel with flanged ends, this EGR cooler ensures reliable performance and precise fitment for emission control systems.

  • Made from high-quality stainless steel for durability and corrosion resistance
  • Flanged end connections with two mounting holes each for secure installation
  • Specific fitment designed for Toyota Prius, Prius Plug-In, and Prius V
  • Tube-type heat exchanger design for efficient exhaust gas cooling
  • CARB certified to meet California Air Resources Board emission standards
  • Compact dimensions: 8.6 inches length, 2.07 inches width, and 8 inches height
  • No gasket or seal included or required for installation

Product Details and Specifications

The Dorman 668-001 EGR Cooler features a tube-type heat exchanger that effectively reduces exhaust gas temperatures before recirculation, helping to lower nitrogen oxide emissions. Both ends of the cooler are flanged with two mounting holes each, sized at 0.33 inches in diameter, ensuring a secure and precise fit. The inside port diameters measure 1.01 inches on one end and 0.82 inches on the outlet, matching OEM specifications for Toyota Prius models. Its silver stainless steel construction offers resistance to heat and corrosion, contributing to long service life in demanding engine environments.

Compatible Vehicles and Applications

  • Designed specifically for Toyota Prius
  • Compatible with Toyota Prius Plug-In
  • Fits Toyota Prius V models
  • Ideal replacement for emission control system maintenance
  • Helps address issues related to EGR system overheating and emissions

Common Issues Addressed by This EGR Cooler

  • Excessive exhaust gas temperatures causing engine performance problems
  • Reduced fuel efficiency due to faulty EGR cooling
  • Increased nitrogen oxide (NOx) emissions failing emissions tests
  • Potential engine knocking or rough idling linked to EGR system faults
  • Overheating of EGR components leading to premature wear

Installation Notes and Tips

This EGR cooler is designed for direct replacement with no need for additional gaskets or seals. Ensure mounting surfaces are clean and free of debris before installation. Use appropriate torque specifications for the flanged mounting bolts to avoid leaks or damage. Verify compatibility with your specific Toyota Prius model year to ensure proper fitment.

Quality Assurance and Certification

The Dorman 668-001 EGR Cooler is California Air Resources Board (CARB) certified, meeting strict emission control standards. Manufactured with durable stainless steel and precision engineering, this part is built to maintain emission system integrity and support regulatory compliance. While no explicit warranty information is provided, Dorman parts typically adhere to industry quality standards for reliable performance.

BrandDorman
Part Number668-001
MaterialStainless steel
ColorSilver
End 1 TypeFlanged
End 2 TypeFlanged
Gasket Or Seal RequiredNo
Overall Height8.
Universal Or Specific FitSpecific
Grade TypeRegular
Gasket Or Seal IncludedNo
End 1 Mount Hole Quantity2
End 2 Mount Hole Quantity2
End 2 Inside Port Diameter1.01
California Air Resources Board (CARB) CertifiedYes
Mounting Hole Diameter0.33
Overall Length8.6
Overall Width2.07
FlangedYes
Heat Exchanger TypeTube
Outlet Inside Diameter (in)0.82 in
Package Contents1 cooler

This part fits 16 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2017ToyotaPrius V1.8LL4N/A
2016ToyotaPrius V1.8LL4N/A
2015ToyotaPrius1.8LL4N/A
2015ToyotaPrius Plug-In1.8LL4N/A
2015ToyotaPrius V1.8LL4N/A
2014ToyotaPrius1.8LL4N/A
2014ToyotaPrius Plug-In1.8LL4N/A
2014ToyotaPrius V1.8LL4N/A
2013ToyotaPrius1.8LL4N/A
2013ToyotaPrius Plug-In1.8LL4N/A
2013ToyotaPrius V1.8LL4N/A
2012ToyotaPrius1.8LL4N/A
2012ToyotaPrius Plug-In1.8LL4N/A
2012ToyotaPrius V1.8LL4N/A
2011ToyotaPrius1.8LL4N/A
2010ToyotaPrius1.8LL4N/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:

2560137010

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