OE Quality
60-Day Returns

CSF 3426 Radiator
Overview of CSF 1 Row Plastic Tank Aluminum Core Radiator
The CSF 1 Row Plastic Tank Aluminum Core Radiator (Part Number 3426) is engineered for Jeep TJ and Wrangler models. Designed with a durable aluminum core and plastic tanks, this radiator offers reliable cooling performance tailored for these vehicles.
- Core thickness: 1 1/4 inches
- Core width: 19 11/16 inches
- Core length: 18 1/8 inches
- Aluminum core material with plastic tanks
- Down flow design for efficient coolant circulation
- Inlet diameter: 1 1/4 inches (right side)
- Outlet diameter: 1 1/2 inches (left side)
- Single core row configuration
- Includes a high-efficiency 12-inch plate type oil cooler with quick-connect fittings
Details on the 1 Row Plastic Tank Aluminum Core Product Line
The CSF 1 Row Plastic Tank Aluminum Core line features radiators constructed with OEM-style plastic tanks combined with a robust aluminum core. This design balances weight and durability while maintaining effective heat dissipation. The inclusion of a quick-connect oil cooler enhances cooling efficiency, making it suitable for Jeep TJ and Wrangler vehicles requiring reliable temperature management under various driving conditions.
Technical Description and Specifications
This radiator features a 1 1/4 inch thick aluminum core measuring 19 11/16 inches wide and 18 1/8 inches long. The down flow design promotes effective coolant flow from the inlet on the right side (1 1/4 inch diameter) to the outlet on the left side (1 1/2 inch diameter). The single core row configuration supports efficient heat exchange while maintaining a compact profile. The plastic tanks reduce weight and resist corrosion, complementing the aluminum core's thermal properties. Additionally, the integrated 12-inch high-efficiency plate type oil cooler with quick-connect fittings supports engine oil temperature regulation.
Compatible Applications and Common Issues Addressed
- Replacement for worn or leaking radiators in Jeep TJ and Wrangler models
- Resolves overheating caused by inefficient or damaged cooling systems
- Addresses coolant leaks from cracked plastic tanks or corroded cores
- Improves engine oil cooling with integrated oil cooler for enhanced performance
- Suitable for vehicles requiring OEM-style radiator replacements with durable materials
Installation Notes and Tips
- Ensure compatibility with Jeep TJ and Wrangler models before installation
- Check inlet and outlet hose diameters (1 1/4 inch right inlet, 1 1/2 inch left outlet) for proper fit
- Verify down flow radiator orientation during installation for optimal coolant circulation
- Use appropriate coolant and follow vehicle manufacturer guidelines when refilling
- Inspect and replace radiator cap separately as this product does not include a cap
Quality Assurance and Warranty Information
The CSF 1 Row Plastic Tank Aluminum Core Radiator (Part Number 3426) is manufactured to meet OEM standards for fit and function. It is constructed without hazardous materials and includes a high-efficiency oil cooler for added reliability. Warranty details should be confirmed with the distributor or manufacturer, as they may vary by region.
| Brand | CSF |
| Part Number | 3426 |
| Position | 1 Row Plastic Tank Aluminum Core |
| Box Height (in) | 5 1/16 |
| Box Length (in) | 24 15/16 |
| Box Weight (lbs) | 15 |
| Box Width (in) | 27 5/16 |
| Cap Included | No |
| Core Length | 18 1/8 |
| Core Material | Aluminum |
| Core Thickness | 1 1/4 |
| Core Width | 19 11/16 |
| Csf Cap Number | 4539 |
| Down Flow Or Cross Flow Type | Down Flow |
| Hazardous Material | No |
| Inlet Diameter | 1 1/4 Right |
| Inlet Length (in) | 20 3/16 |
| Inlet Width (in) | 1 15/16 |
| Oil Cooler (in) | 12 (high-efficiency Plate Type) |
| Outlet Diameter | 1 1/2 Left |
| Outlet Length (in) | 20 3/16 |
| Outlet Width (in) | 1 15/16 |
| Radiator Core Row Quantity | 1 |
| Tank Material | Plastic |
| Tech Note | O.E.M. style Plastic tanks & Aluminum core;with quick-connect oil cooler fittings. |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Jeep | TJ | 2.4L | L4 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 2006 | Jeep | TJ | 4.0L | L6 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 2006 | Jeep | Wrangler | 2.4L | L4 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 2006 | Jeep | Wrangler | 4.0L | L6 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 2005 | Jeep | TJ | 4.0L | L6 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 2005 | Jeep | TJ | 2.4L | L4 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 2005 | Jeep | Wrangler | 4.0L | L6 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
| 2005 | Jeep | Wrangler | 2.4L | L4 | N/A | OE Style Design; Use Small, 18 psi Cap; 1 Row Plastic Tank Aluminum Core |
* 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.