HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-234 Engine Coolant Reservoir - Front
Part #: 603-234

Dorman 603-234 Engine Coolant Reservoir - Front

Front
⚙️ 60 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mitsubishi, Lancer, Outlander, Outlander Sport, and RVR
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dorman Engine Coolant Reservoir 603-234

The Dorman 603-234 engine coolant reservoir is designed for reliable coolant storage and overflow management in select Mitsubishi vehicles. This replacement reservoir is compatible with Mitsubishi Lancer, Outlander, Outlander Sport, and RVR models, providing a precise fit and durable construction.

  • Constructed from durable white plastic for corrosion resistance
  • Includes a flip-top cap for easy access and secure sealing
  • Non-pressurized design suitable for overflow coolant containment
  • Comes with one mounting hole for straightforward installation
  • Cap included with the reservoir for complete replacement

Detailed Product Description

The Dorman 603-234 engine coolant reservoir is made from high-quality plastic, ensuring resistance to heat and chemical exposure common in engine compartments. Its white color allows for easy coolant level monitoring without removing the cap. The flip-top cap design facilitates convenient refilling and inspection while maintaining a secure seal to prevent leaks. This reservoir is non-pressurized, making it ideal for managing coolant overflow rather than pressurized coolant circulation. The single mounting hole allows for proper alignment and secure attachment in the engine bay. This product includes both the reservoir and the cap, providing a complete solution for coolant overflow system maintenance.

Compatible Vehicles and Applications

  • Compatible with Mitsubishi Lancer models requiring a replacement coolant reservoir
  • Fits Mitsubishi Outlander and Outlander Sport vehicles for proper coolant overflow management
  • Suitable for Mitsubishi RVR models needing a direct-fit coolant reservoir replacement

Common Issues Addressed by This Coolant Reservoir

  • Cracked or leaking coolant reservoir causing coolant loss
  • Damaged or missing reservoir cap leading to coolant contamination
  • Discolored or brittle plastic reservoir affecting coolant visibility and integrity
  • Coolant overflow system malfunction due to faulty reservoir
  • Replacement needed after overheating or engine coolant system repairs

Installation Notes and Tips

Installation of the Dorman 603-234 reservoir requires removal of the old reservoir and proper alignment using the single mounting hole. Since mounting hardware is not included, reuse existing brackets and fasteners or acquire compatible hardware separately. Ensure the flip-top cap is securely fastened after installation to prevent leaks. Check coolant levels and top off as necessary after installation. It is recommended to inspect hoses and connections for wear during replacement.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit and function. The 603-234 engine coolant reservoir undergoes quality checks to ensure durability and performance. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

BrandDorman
Part Number603-234
MaterialPlastic
ColorWhite
Mounting Hardware IncludedNo
Mounting Hole Quantity1
Mounting Brackets IncludedNo
Cap TypeFlip top
PressurizedNo
Cap IncludedYes
Package Contents1 coolant reservoir; 1 cap

This part fits 60 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2020MitsubishiOutlander Sport2.4LL4N/A
2020MitsubishiRVR2.0LL4N/A
2019MitsubishiOutlander Sport2.4LL4N/A
2019MitsubishiRVR2.4LL4N/A
2018MitsubishiOutlander Sport2.4LL4Front
2018MitsubishiOutlander Sport2.0LL4Front
2018MitsubishiRVR2.4LL4Front
2018MitsubishiRVR2.0LL4Front
2017MitsubishiLancer2.4LL4Front
2017MitsubishiLancer2.0LL4Front
2017MitsubishiOutlander Sport2.4LL4Front
2017MitsubishiOutlander Sport2.0LL4Front
2017MitsubishiRVR2.4LL4Front
2017MitsubishiRVR2.0LL4Front
2016MitsubishiLancer2.4LL4Front
2016MitsubishiLancer2.0LL4Front
2016MitsubishiOutlander Sport2.4LL4Front
2016MitsubishiOutlander Sport2.0LL4Front
2016MitsubishiRVR2.4LL4Front
2016MitsubishiRVR2.0LL4Front
2015MitsubishiLancer2.4LL4Front
2015MitsubishiLancer2.0LL4Front
2015MitsubishiOutlander Sport2.4LL4Front
2015MitsubishiOutlander Sport2.0LL4Front
2015MitsubishiRVR2.4LL4Front
2015MitsubishiRVR2.0LL4Front
2014MitsubishiLancer2.4LL4Front
2014MitsubishiLancer2.0LL4Front
2014MitsubishiOutlander Sport2.0LL4Front
2014MitsubishiRVR2.0LL4Front
2013MitsubishiLancer2.4LL4Front
2013MitsubishiLancer2.0LL4Front
2013MitsubishiOutlander2.4LL4Front
2013MitsubishiOutlander3.0LV6Front
2013MitsubishiOutlander Sport2.0LL4Front
2013MitsubishiRVR2.0LL4Front
2012MitsubishiLancer2.4LL4Front
2012MitsubishiLancer2.0LL4Front
2012MitsubishiOutlander2.4LL4Front
2012MitsubishiOutlander3.0LV6Front
2012MitsubishiOutlander Sport2.0LL4Front
2012MitsubishiRVR2.0LL4Front
2011MitsubishiLancer2.4LL4Front
2011MitsubishiLancer2.0LL4Front
2011MitsubishiOutlander2.4LL4Front
2011MitsubishiOutlander3.0LV6Front
2011MitsubishiOutlander Sport2.0LL4Front
2011MitsubishiRVR2.0LL4Front
2010MitsubishiLancer2.4LL4Front
2010MitsubishiLancer2.0LL4Front
2010MitsubishiOutlander2.4LL4Front
2010MitsubishiOutlander3.0LV6Front
2009MitsubishiLancer2.4LL4Front
2009MitsubishiLancer2.0LL4Front
2009MitsubishiOutlander2.4LL4Front
2009MitsubishiOutlander3.0LV6Front
2008MitsubishiLancer2.0LL4Front
2008MitsubishiOutlander2.4LL4Front
2008MitsubishiOutlander3.0LV6Front
2007MitsubishiOutlander3.0LV6Front

* 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:

DAKG-8750FRT2203CMN156097

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