Part #: 3403

CSF 3403 Radiator

1 Row Plastic Tank Aluminum Core
⚙️ 25 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦1 Row Plastic Tank Aluminum Core
🚗Fitment: INFINITI, QX70, QX50, EX37, FX37, FX50, EX35, and FX35
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of CSF 3403 Radiator for Infiniti Models

The CSF 3403 radiator is engineered specifically for select Infiniti vehicles, including the EX35, EX37, FX35, FX37, FX50, QX50, and QX70. Designed with a 1-row aluminum core and plastic tanks, this radiator offers reliable cooling performance tailored to your vehicle's requirements.

  • Core Thickness: 7/8 inch
  • Core Width: 20 5/16 inches
  • Core Length: 25 inches
  • Core Material: Aluminum
  • Tank Material: Plastic
  • Inlet Diameter: 1 3/8 inches (right side)
  • Outlet Diameter: 1 3/8 inches (left side)
  • Cross flow design for efficient coolant circulation
  • Single core row configuration
  • Cap not included
  • High-efficiency plate type oil cooler measuring 10 7/16 inches

Details on the 1 Row Plastic Tank Aluminum Core Product Line

The CSF 1 Row Plastic Tank Aluminum Core line combines OEM-style plastic tanks with a durable aluminum core to provide a balance of lightweight construction and effective heat dissipation. This product line is designed to meet the cooling demands of various Infiniti models, ensuring compatibility and performance consistency with factory specifications.

Product Description and Specifications

The CSF 3403 radiator features a 7/8 inch thick aluminum core that measures 20 5/16 inches in width and 25 inches in length, providing sufficient surface area for heat exchange. The plastic tanks on either side are designed to withstand typical operating conditions while reducing overall weight. The radiator uses a cross flow design, which promotes efficient coolant flow from the inlet on the right side to the outlet on the left side, both with a diameter of 1 3/8 inches. Additionally, the integrated high-efficiency plate type oil cooler enhances engine cooling performance, supporting vehicle reliability under various driving conditions.

Common Applications and Problem Solving

  • Replacement for leaking or damaged radiators in Infiniti EX35, EX37, FX35, FX37, FX50, QX50, and QX70 models
  • Addresses overheating issues caused by clogged or inefficient cooling cores
  • Restores proper coolant flow with OEM-style plastic tanks and aluminum core
  • Supports engine oil cooling through the integrated oil cooler
  • Suitable for vehicles requiring a single-row radiator core configuration

Installation Notes and Tips

  • Ensure compatibility with your specific Infiniti model and engine configuration before installation
  • Inspect and replace radiator hoses and clamps as needed during installation
  • Bleed the cooling system properly to avoid air pockets after installation
  • Verify inlet and outlet hose diameters (1 3/8 inches) match your vehicle’s specifications
  • Cap is not included; reuse existing radiator cap or purchase separately

Quality Assurance and Warranty

The CSF 3403 radiator is manufactured to meet OEM standards, featuring durable aluminum core construction and plastic tanks designed for longevity. While specific warranty details are not provided here, CSF products typically come with a limited warranty covering defects in materials and workmanship. It is recommended to consult the product documentation or supplier for exact warranty terms.

BrandCSF
Part Number3403
Position1 Row Plastic Tank Aluminum Core
Box Height (in)7 5/8
Box Length (in)30 5/8
Box Weight (lbs)12
Box Width (in)24 1/8
Cap IncludedNo
Core Length25
Core MaterialAluminum
Core Thickness7/8
Core Width20 5/16
Down Flow Or Cross Flow TypeCross Flow
Hazardous MaterialNo
Inlet Diameter1 3/8 Right
Inlet Length (in)21 3/16
Inlet Width (in)1 5/8
Oil Cooler (in)10 7/16 (high-efficiency Plate Type)
Outlet Diameter1 3/8 Left
Outlet Length (in)21 3/16
Outlet Width (in)1 5/8
Radiator Core Row Quantity1
Tank MaterialPlastic
Tech NoteO.E.M. style Plastic tanks & Aluminum core.

This part fits 25 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2017INFINITIQX503.7LV6N/A1 Row Plastic Tank Aluminum Core
2017INFINITIQX705.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2016INFINITIQX503.7LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2016INFINITIQX705.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2016INFINITIQX703.7LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2015INFINITIQX503.7LV6N/A1 Row Plastic Tank Aluminum Core
2015INFINITIQX705.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2014INFINITIQX503.7LV6N/A1 Row Plastic Tank Aluminum Core
2014INFINITIQX705.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2013INFINITIEX373.7LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2013INFINITIFX373.7LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2013INFINITIFX505.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2012INFINITIEX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2012INFINITIFX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2012INFINITIFX505.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2011INFINITIEX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2011INFINITIFX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2011INFINITIFX505.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2010INFINITIEX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2010INFINITIFX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2010INFINITIFX505.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2009INFINITIEX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2009INFINITIFX353.5LV6N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2009INFINITIFX505.0LV8N/AOE Style Design; Use Mini, 20 psi Cap; 1 Row Plastic Tank Aluminum Core
2008INFINITIEX353.5LV6N/AOE Style Design; Use Mini, 20 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:

130781307921460-1BA0A21460-1BH0A21460-1CB0A21460-1TS0A21460-1UR0A221-342380130788013079CU13078CU13079IN3010206IN3010207

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