HomeBelts and Cooling > Radiators, Coolers and Related ComponentsDorman 603-5201 Engine Coolant Reservoir - Front
Part #: 603-5201

Dorman 603-5201 Engine Coolant Reservoir - Front

Front
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$102.61Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Reservoir for Vehicle Cooling Systems

The Dorman 603-5201 engine coolant reservoir is designed to maintain optimal coolant levels and pressure in your vehicle's cooling system. Made from durable clear plastic, this reservoir allows for easy visual inspection of coolant levels, helping to prevent overheating and engine damage.

  • Constructed from clear plastic for easy coolant level monitoring
  • Includes a spring loaded twist cap rated for 15 psi pressure
  • Pressurized reservoir to maintain proper cooling system pressure
  • Equipped with two mounting holes for secure installation
  • Cap included with the reservoir for a complete replacement

Durable Design and Functional Features

The Dorman 603-5201 engine coolant reservoir is engineered to meet or exceed OEM specifications. Its clear plastic construction resists corrosion and allows drivers and technicians to quickly check coolant levels without removing the cap. The included spring loaded twist cap is designed to maintain a maximum pressure rating of 15 psi, ensuring the cooling system operates efficiently under normal driving conditions. With two mounting holes, this reservoir can be securely installed in compatible vehicles, providing a stable and leak-free fit.

Compatible Vehicles and Common Applications

This engine coolant reservoir is compatible with a range of vehicles requiring a pressurized coolant tank with a spring loaded twist cap. It is commonly used in automotive cooling systems to address issues such as:

  • Coolant leaks due to cracked or damaged reservoirs
  • Overheating caused by insufficient coolant levels
  • Pressure loss in the cooling system affecting engine performance
  • Damaged or missing coolant reservoir caps
  • Visible coolant contamination or discoloration in the reservoir

Installation Notes and Tips

When installing the Dorman 603-5201 engine coolant reservoir, ensure the vehicle is cool to avoid injury from hot coolant. The reservoir mounts using two existing mounting holes; no additional brackets or hardware are included. Replace the old cap with the included spring loaded twist cap to maintain proper system pressure. After installation, check for leaks and verify coolant levels before operating the vehicle.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet industry standards for quality and durability. The 603-5201 engine coolant reservoir includes a cap and is designed for long-lasting performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship to provide confidence in your replacement part.

BrandDorman
Part Number603-5201
MaterialPlastic
ColorClear
Mounting Hardware IncludedNo
Mounting Hole Quantity2
Mounting Brackets IncludedNo
Cap TypeSpring loaded twist
PressurizedYes
Cap Maximum Pressure Rating15
Cap IncludedYes
Package Contents1 coolant reservoir; 1 cap

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* 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:

0520529000575.1011S-20397SK6035201

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