
Dorman 603-5134 Engine Coolant Reservoir
Engine Coolant Reservoir Replacement
Dorman 603-5134 is a replacement engine coolant reservoir built from plastic to handle underhood heat and engine vibration. It matches the original part’s fit and function for a direct repair on the correct application, including vehicle searches for coolant reservoir replacement for Ford, Freightliner, and International models.
- Plastic reservoir construction
- Black, transparent housing for fluid visibility
- Spring-loaded twist cap included
- Level sensor included
- Mounting brackets included
- Irregular shape with 4 mounting holes
- 9 L capacity
- Non-pressurized design
Fitment-Based Application
Compatible with vehicle-specific coolant system repairs where the original reservoir has cracked, leaked, or lost proper fluid level visibility. This Dorman 603-5134 coolant reservoir is referenced for heavy-duty and commercial applications, and cross-references Monroe Shocks & Struts (e.g., 575.10347, 2507478C1) for the same application.
What It Helps Fix
- Coolant leaks from a cracked expansion tank
- Loss of coolant level visibility
- Broken or damaged reservoir mounting points
- Faulty reservoir cap sealing issues
- Level sensor-related coolant monitoring problems
Installation Notes
Verify reservoir shape, mounting hole count, cap style, sensor connection, and capacity before installation. Transfer any vehicle-specific hoses or fittings as required by the application. Confirm the cooling system is filled and bled according to the manufacturer procedure after replacement. Fits should be checked against the original reservoir on Ford, Freightliner, and International applications before ordering Dorman 603-5134.
Quality Assurance
Dorman manufactures this coolant reservoir from materials selected to withstand heat cycling and vibration in the engine bay. The part is engineered to match original fit and function for a direct replacement on the intended application.
Original: $475.46
-65%$475.46
$166.41Dorman 603-5134 Engine Coolant Reservoir
Engine Coolant Reservoir Replacement
Dorman 603-5134 is a replacement engine coolant reservoir built from plastic to handle underhood heat and engine vibration. It matches the original part’s fit and function for a direct repair on the correct application, including vehicle searches for coolant reservoir replacement for Ford, Freightliner, and International models.
- Plastic reservoir construction
- Black, transparent housing for fluid visibility
- Spring-loaded twist cap included
- Level sensor included
- Mounting brackets included
- Irregular shape with 4 mounting holes
- 9 L capacity
- Non-pressurized design
Fitment-Based Application
Compatible with vehicle-specific coolant system repairs where the original reservoir has cracked, leaked, or lost proper fluid level visibility. This Dorman 603-5134 coolant reservoir is referenced for heavy-duty and commercial applications, and cross-references Monroe Shocks & Struts (e.g., 575.10347, 2507478C1) for the same application.
What It Helps Fix
- Coolant leaks from a cracked expansion tank
- Loss of coolant level visibility
- Broken or damaged reservoir mounting points
- Faulty reservoir cap sealing issues
- Level sensor-related coolant monitoring problems
Installation Notes
Verify reservoir shape, mounting hole count, cap style, sensor connection, and capacity before installation. Transfer any vehicle-specific hoses or fittings as required by the application. Confirm the cooling system is filled and bled according to the manufacturer procedure after replacement. Fits should be checked against the original reservoir on Ford, Freightliner, and International applications before ordering Dorman 603-5134.
Quality Assurance
Dorman manufactures this coolant reservoir from materials selected to withstand heat cycling and vibration in the engine bay. The part is engineered to match original fit and function for a direct replacement on the intended application.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Engine Coolant Reservoir Replacement
Dorman 603-5134 is a replacement engine coolant reservoir built from plastic to handle underhood heat and engine vibration. It matches the original part’s fit and function for a direct repair on the correct application, including vehicle searches for coolant reservoir replacement for Ford, Freightliner, and International models.
- Plastic reservoir construction
- Black, transparent housing for fluid visibility
- Spring-loaded twist cap included
- Level sensor included
- Mounting brackets included
- Irregular shape with 4 mounting holes
- 9 L capacity
- Non-pressurized design
Fitment-Based Application
Compatible with vehicle-specific coolant system repairs where the original reservoir has cracked, leaked, or lost proper fluid level visibility. This Dorman 603-5134 coolant reservoir is referenced for heavy-duty and commercial applications, and cross-references Monroe Shocks & Struts (e.g., 575.10347, 2507478C1) for the same application.
What It Helps Fix
- Coolant leaks from a cracked expansion tank
- Loss of coolant level visibility
- Broken or damaged reservoir mounting points
- Faulty reservoir cap sealing issues
- Level sensor-related coolant monitoring problems
Installation Notes
Verify reservoir shape, mounting hole count, cap style, sensor connection, and capacity before installation. Transfer any vehicle-specific hoses or fittings as required by the application. Confirm the cooling system is filled and bled according to the manufacturer procedure after replacement. Fits should be checked against the original reservoir on Ford, Freightliner, and International applications before ordering Dorman 603-5134.
Quality Assurance
Dorman manufactures this coolant reservoir from materials selected to withstand heat cycling and vibration in the engine bay. The part is engineered to match original fit and function for a direct replacement on the intended application.












