Dorman OE Solutions Engine Coolant Reservoir for 2012-2020 Chevrolet Sonic 603-386

Pressurized coolant reservoir for 2012-2020 Chevrolet Sonic by Dorman used to replace cracked or leaking factory overflow tanks.

Built to meet the manufacturer's design intent for reliable service, this replacement engine coolant reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration.

Key Features

• Direct fit replacement designed to match original equipment form and function
• Constructed from durable materials resistant to underhood heat
• Engineered to handle engine vibration without cracking
• Includes cap and sensor port where applicable to original design
• Part number 603-386 replaces GM numbers 95048411 and 13502353

Benefits

• Restores proper coolant levels to prevent engine overheating
• Eliminates leaks caused by cracked or damaged factory tanks
• Ensures a secure fit that reduces the risk of repeat repairs
• Maintains correct system pressure for optimal cooling performance
• Provides a cost-effective solution compared to dealer parts
• Backed by Dorman's reputation for dependable aftermarket solutions

Application

Ideal for Chevrolet Sonic owners experiencing coolant loss, visible cracks in the overflow tank, or failed pressure tests who need a reliable direct-fit replacement.

Fitment Notes

• Compatible with 2012-2020 Chevrolet Sonic models
• Verify vehicle compatibility using part number 603-386 before purchase

Why Choose Dorman - OE Solutions?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Over 100 years of automotive aftermarket experience ensures trustworthy design
• Built with quality materials and validated through testing for daily driving demands

What's in the Box

• 1 PC Engine Coolant Reservoir

Item Dimensions

• 11.3in x 8.7in x 6.0in
• Weight: 1.7lbs