CSF
1 Row All Aluminum

CSF 3712 Radiator

Brand CSF 3712
Box Height (in) 6 4/16
Box Length (in) 32 7/16
Box Weight (lbs) 11
Box Width (in) 23 1/8
Cap Included No
Core Length 26 5/16
Core Material Aluminum
Core Thickness 7/8
Core Width 19 5/16
Csf Cap Number 4513
Down Flow Or Cross Flow Type Cross Flow
Hazardous Material No
Inlet Diameter 1 3/8 Right
Inlet Length (in) 19 3/4
Inlet Width (in) 1 3/16
Oil Cooler (in) 13 3/4 (high-efficiency Plate Type)
Outlet Diameter 1 1/2 Left
Outlet Length (in) 19 3/4
Outlet Width (in) 1 3/16
Radiator Core Row Quantity 1
Tank Material Aluminum
Tech Note O.E.M. style All Aluminum tanks & core model.
Product line 1 Row All Aluminum
Fits Lexus · 3 vehicles

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

Cross-flow layout. Promotes efficient coolant flow for consistent cooling performance.

Wind tunnel tested. Validated in lab for cooling performance.

Cross-references APDI 8012689, Global Parts Distributors LLC 2689 and Spectra Premium CU2689 for the same application. See all 7.

$199.62Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $199.62
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

CSF 3712 Radiator for Lexus RX330

The CSF 3712 is a 1-row all-aluminum radiator built for the 2004-2006 Lexus RX330 with OE-style fitment. It uses an aluminum core and aluminum tanks, with a cross-flow design and high-efficiency plate-type oil cooler section for a direct replacement solution.

Key Features

  • 1-row all-aluminum construction for the CSF 3712 radiator
  • Cross-flow design with 7/8 in. core thickness
  • Aluminum core and aluminum tanks
  • OE-style all-aluminum tank and core layout
  • Inlet: 1 3/8 in. right; outlet: 1 1/2 in. left
  • Integrated 13 3/4 in. high-efficiency plate-type oil cooler
  • Designed for 2004-2006 Lexus RX330, Japan-built, with tow package

Product Details

CSF builds radiators to high-performance standards and validates cooling performance through laboratory wind-tunnel testing. The CSF 3712 follows an OE-style design with all-aluminum construction, making it a direct-fit radiator choice for Lexus RX330 owners who need a replacement that matches the original layout and cooling configuration. This part cross-references Spectra Premium CU2689 and APDI 8012689 for the same application.

Common Cooling Issues This Radiator Can Address

  • Cracked or leaking radiator tanks
  • Restricted coolant flow from an aging core
  • Cooling system overheating under load
  • Oil cooler section wear in the radiator assembly
  • Fitment problems from a damaged OE-style replacement radiator

Installation Notes

Verify the vehicle is a 2004-2006 Lexus RX330, Japan-built, with tow package before installation. Confirm inlet and outlet orientation, core dimensions, and hose connection sizes against the original radiator. Transfer any required cooling system components from the original assembly as needed, and inspect hoses, clamps, and coolant condition before refilling and bleeding the system.

Quality Assurance

CSF manufactures radiators in ISO/TSO-certified facilities and has supplied cooling products worldwide for decades. The brand states that its radiator designs are engineered and tested for cooling performance validation, supporting consistent OE-style replacement quality for the Lexus RX330 application.

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2006LexusRX3303.3LV6N/AOE Style Design; Japan Built; w/ Tow Package; 1 Row All Aluminum
2005LexusRX3303.3LV6N/AOE Style Design; Japan Built; w/ Tow Package; 1 Row All Aluminum
2004LexusRX3303.3LV6N/AOE Style Design; Japan Built; w/ Tow Package; 1 Row All Aluminum
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8012689Global Parts Distributors LLC — 2689Spectra Premium — CU268916041-2031016041-2031116041-20312LX3010128