CSF 3818 Radiator
OE Quality 60-Day Returns
CSF
 2 Row Plastic Tank Aluminum Core

CSF 3818 Radiator

Brand CSF 3818
Core Thickness 1 5/8
Core Width 28 11/16
Core Material Aluminum
Tank Material Plastic
Core Length 26 1/4
Inlet Diameter 1 3/8 right
Outlet Diameter 1 3/8 left
Down Flow Or Cross Flow Type Cross flow
Radiator Core Row Quantity 2
Cap Included No
Csf Cap Number 4503
Hazardous Material No
Inlet Length (in) 29 1/4
Inlet Width (in) 2 1/8
Outlet Length (in) 29 1/4
Outlet Width (in) 2 1/8
Tech Note O.e.m. style plastic tanks & aluminum core.
Product line 2 Row Plastic Tank Aluminum Core
Fits INFINITI and Nissan · 14 vehicles

OE-style construction. Plastic tanks and an aluminum core match the original design.

Cross-flow design. Promotes efficient coolant movement through the radiator.

Wind tunnel tested for cooling performance validation.

Cross-references Bosch 13595, 21410-1LA0A and IN3010210 for the same application. See all 3.

$228.57Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $228.57
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Radiator options

OE-Style Cooling for Armada, QX56, and QX80

CSF radiator part number 3818 is an OE-style replacement built with a plastic tank and aluminum core for direct-fit cooling performance. It is engineered for the Nissan Armada and INFINITI QX56/QX80 applications listed below, including upgraded heavy-duty coverage for select 2020 models.

Key Features

  • 2-row cross-flow radiator design
  • Aluminum core with plastic tanks
  • Core thickness: 1 5/8 in.
  • Core size: 26 1/4 in. length x 28 11/16 in. width
  • Inlet diameter: 1 3/8 in., right side
  • Outlet diameter: 1 3/8 in., left side
  • OE-style plastic tank and aluminum core construction
  • Cap not included; CSF cap number 4503

Product Details

CSF 3818 is part of the brand’s 2 Row Plastic Tank Aluminum Core line, a product line focused on OE-style radiator construction with aluminum heat exchange performance and molded plastic end tanks. CSF manufactures radiators to high-performance standards and validates cooling performance through laboratory wind tunnel testing. This radiator is built for the 2020 Nissan Armada and 2020 INFINITI QX80 with upgraded heavy-duty core coverage, plus 2014-2019 INFINITI QX80, 2017-2019 Nissan Armada, and 2011-2013 INFINITI QX56 applications.

This part cross-references Bosch 13595 for the same application.

Common Cooling Issues Addressed

  • Overheating caused by a worn or restricted radiator core
  • Coolant temperature instability during stop-and-go driving
  • Reduced heat transfer from aging internal passages
  • Cracked or deteriorated OE-style plastic tank construction
  • Fitment problems from using the wrong radiator configuration

Installation Notes and Tips

Verify inlet and outlet orientation before installation: inlet is on the right and outlet is on the left. Confirm the vehicle uses the listed cross-flow layout and OE-style radiator dimensions before removal of the original unit. The radiator cap is not included, so reuse or replace the cap separately as needed with CSF cap number 4503.

Fits 2020 Nissan Armada, N/A; Fits 2020 INFINITI QX80, N/A; Fits 2014-2019 INFINITI QX80, N/A; Fits 2017-2019 Nissan Armada, N/A; Fits 2011-2013 INFINITI QX56, N/A.

Quality Assurance

CSF radiators are manufactured in ISO/TSO-certified facilities and built to validated cooling-performance standards. The brand has supplied radiators worldwide for more than 50 years and offers extensive model coverage across many vehicle platforms.

Related reading

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2020INFINITIQX805.6LV8N/AUpgraded Heavy Duty Core. 2 Row core to OEM 1 Row core; 2 Row Plastic Tank Aluminum Core
2020NissanArmada5.6LV8N/AUpgraded Heavy Duty Core. 2 Row core to OEM 1 Row core; 2 Row Plastic Tank Aluminum Core
2019INFINITIQX805.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2019NissanArmada5.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2018INFINITIQX805.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2018NissanArmada5.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2017INFINITIQX805.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2017NissanArmada5.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2016INFINITIQX805.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2015INFINITIQX805.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2014INFINITIQX805.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2013INFINITIQX565.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2012INFINITIQX565.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
2011INFINITIQX565.6LV8N/AOE style design ensures optimal fitment and performance.; 2 Row Plastic Tank Aluminum Core
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 1359521410-1LA0AIN3010210