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CSF 3936 Radiator
Overview of CSF Radiator Part 3936 for Ram 2500 and 3500
The CSF radiator part number 3936 is designed specifically for Ram 2500 and 3500 models, providing reliable cooling performance. Featuring a cross flow design with an aluminum core and plastic tanks, this radiator supports efficient heat dissipation for heavy-duty applications.
- Core thickness: 1 1/4 inches
- Core width: 20 5/16 inches
- Core length: 33 3/8 inches
- Aluminum core material with plastic tanks
- Inlet and outlet diameter: 1 15/16 inches (left inlet, right outlet)
- Cross flow radiator type
- Box dimensions: 44 5/8" length, 23 3/4" width, 8 1/4" height
- Single row core design
- Weight: 19 lbs
Detailed Product Description
This CSF radiator (part number 3936) is engineered with an OEM-style plastic tank and an upgraded heavy-duty aluminum core. The cross flow design enhances coolant flow efficiency, which is critical for maintaining optimal engine temperatures in Ram 2500 and 3500 trucks. The single-row core with a thickness of 1 1/4 inches balances cooling capacity and airflow, while the aluminum core material offers corrosion resistance and durability. Both the inlet and outlet have a diameter of 1 15/16 inches, positioned on the left and right sides respectively, ensuring compatibility with factory hose connections.
Applications and Common Issues Addressed
- Replacement for damaged or leaking radiators in Ram 2500 and 3500 trucks
- Resolves overheating caused by inefficient or clogged cooling systems
- Addresses coolant leaks from cracked plastic tanks or corroded cores
- Improves cooling performance in heavy-duty towing or hauling conditions
- Suitable for restoring factory cooling system specifications
Installation Notes and Tips
When installing the CSF radiator 3936, ensure all hose connections match the 1 15/16 inch inlet and outlet diameters. The cross flow design requires proper orientation for optimal coolant flow, so verify inlet and outlet positions before installation. This radiator does not include a radiator cap, so reuse the existing cap or source a compatible replacement. Check for secure mounting points and inspect surrounding components for wear during installation.
Quality Assurance and Warranty
CSF radiators are manufactured to meet OEM specifications, using high-quality aluminum cores and durable plastic tanks. This radiator is designed for long-term reliability in Ram 2500 and 3500 trucks. While specific warranty details are not provided, CSF products typically come with manufacturer-backed quality assurance to support performance and durability.
| Brand | CSF |
| Part Number | 3936 |
| Core Thickness | 1 1/4 |
| Core Width | 20 5/16 |
| Core Material | Aluminum |
| Tank Material | Plastic |
| Core Length | 33 3/8 |
| Inlet Diameter | 1 15/16 left |
| Outlet Diameter | 1 15/16 right |
| Down Flow Or Cross Flow Type | Cross flow |
| Box Height (in) | 8 1/4 |
| Box Length (in) | 44 5/8 |
| Box Weight (lbs) | 19 |
| Box Width (in) | 23 3/4 |
| Hazardous Material | No |
| Inlet Length (in) | 20 7/8 |
| Inlet Width (in) | 2 3/16 |
| No. Of Rows | 1 |
| Oil Cooler (in) | No |
| Outlet Length (in) | 20 7/8 |
| Outlet Width (in) | 2 3/16 |
| Radiator Cap Supplied | No |
| Tech Note | O.e.m. style plastic tank & aluminum core. upgraded heavy duty co |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2025 | Ram | 2500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2025 | Ram | 3500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2024 | Ram | 2500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2024 | Ram | 3500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2023 | Ram | 2500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2023 | Ram | 3500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2022 | Ram | 2500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2022 | Ram | 3500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2021 | Ram | 2500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2021 | Ram | 3500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2020 | Ram | 2500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2020 | Ram | 3500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2019 | Ram | 2500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
| 2019 | Ram | 3500 | 6.4L | V8 | N/A | Upgraded Heavy Duty Core. 11% Thicker 30mm vs OEM 27mm |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.