HomeBelts and Cooling > Radiators, Coolers and Related ComponentsSKP SK603644 Engine Coolant Reservoir
Part #: SK603644

SKP SK603644 Engine Coolant Reservoir

6 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$41.65Free 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
Fitment: Mercedes-Benz, 300CE, 300E, 300TE, and E320
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Engine Coolant Reservoir for Mercedes-Benz

Replace a cracked or leaking coolant tank with this SKP engine coolant reservoir, part number SK603644. It is a direct-fit cooling system component for select Mercedes-Benz models, including 1994-1995 Mercedes-Benz E320 and 1993 Mercedes-Benz 300CE, 300E, and 300TE.

Key Features

  • Engine coolant reservoir for the cooling system
  • Direct-fit replacement for select Mercedes-Benz applications
  • Cross-references Dorman - OE Solutions 603-644 for the same application
  • Also cross-references 124 500 13 49 and 605-3654-1
  • SKP part number SK603644 for easy identification

Detailed Description

This SKP coolant reservoir is built for vehicles that use an expansion tank to manage coolant volume as the engine heats and cools. It fits 1994-1995 Mercedes-Benz E320, as well as 1993 Mercedes-Benz 300CE, 300E, and 300TE. If you are searching for a Mercedes-Benz E320 coolant reservoir or a 1993 Mercedes-Benz 300E expansion tank replacement, SK603644 provides the correct application match.

Use this reservoir to restore proper coolant storage and recovery in the cooling system. The part number SK603644 is also referenced by Dorman - OE Solutions 603-644, making it easier to confirm the correct replacement during parts lookup.

What It Helps Fix

  • Coolant loss from a cracked reservoir
  • Visible leaks around the expansion tank
  • Low coolant warnings caused by reservoir failure
  • Overflow or recovery issues in the cooling system
  • Age-related plastic deterioration in the original tank

Installation Notes and Tips

Verify the reservoir shape, hose connections, and mounting points against the original part before installation. Inspect the cap, hoses, and nearby cooling system components for wear or damage while replacing the tank. After installation, refill and bleed the cooling system according to the vehicle service procedure to help prevent trapped air.

Quality Assurance

SKP replacement parts are cataloged for specific vehicle applications to support accurate fitment selection. Confirm your Mercedes-Benz model and year against the listed coverage before ordering SK603644.

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1995Mercedes-BenzE320N/A
1994Mercedes-BenzE320N/A
1993Mercedes-Benz300CEN/A
1993Mercedes-Benz300E3.2LL6N/A
1993Mercedes-Benz300E2.8LL6N/A
1993Mercedes-Benz300TEN/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:

124 500 13 49603-644605-3654-1

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