CSF 2306 Radiator
OE Quality 60-Day Returns
CSF
 3 Row All Metal

CSF 2306 Radiator

Brand CSF 2306
Core Thickness 1 11/16
Core Width 20 13/16
Core Material Copper
Tank Material Brass
Core Length 16 3/4
Inlet Diameter 1 3/8 right
Outlet Diameter 1 3/8 left
Down Flow Or Cross Flow Type Down flow
Radiator Core Row Quantity 3
Cap Included No
Box Height (in) 5 1/2
Box Length (in) 23 3/8
Box Weight (lbs) 17
Box Width (in) 25 1/8
Csf Cap Number 4502
Hazardous Material No
Inlet Length (in) 20 7/8
Inlet Width (in) 2 3/16
Oil Cooler (in) 14 3/4 (high-effeciency concentric type)
Outlet Length (in) 20 7/8
Outlet Width (in) 2 3/16
Tech Note Rugged all metal model.
Product line 3 Row All Metal
Fits Toyota · 12 vehicles

All-metal construction. Rugged copper-and-brass build for dependable cooling performance.

3-row design. Adds cooling capacity for demanding thermal loads.

Wind tunnel tested. Validated in the lab for cooling performance.

Cross-references APDI 8010945, Autolite 147 and Champion Spark Plug 18 for the same application. See all 8.

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CSF 3 Row All Metal Radiator for Toyota Pickup and 4Runner

CSF Part Number 2306 is a down-flow radiator built with a copper core and brass tanks for Toyota truck and SUV applications. It is designed for 1985-1995 Toyota 4Runner and 1988-1995 Toyota Pickup fitment, with a rugged all-metal construction and a high-efficiency concentric oil cooler section.

Key Features

  • 3-row copper core with brass tank construction
  • Down-flow design for the listed Toyota applications
  • Core thickness: 1 11/16 in.
  • Core dimensions: 20 13/16 in. wide x 16 3/4 in. long
  • Inlet diameter: 1 3/8 in. right
  • Outlet diameter: 1 3/8 in. left
  • Rugged all-metal design
  • High-efficiency concentric oil cooler section
  • Cap not included; CSF cap number 4502 is referenced for this application

Product Details

CSF 2306 is a replacement radiator engineered for cooling-system service on Toyota Pickup and Toyota 4Runner models listed below. The 3-row copper core and brass tank layout supports heat transfer in a traditional all-metal design, while the down-flow configuration matches the original application layout. CSF manufactures radiators to performance-focused standards and validates designs through laboratory wind-tunnel testing, with broad coverage across many vehicle platforms.

This part cross-references Spectra Premium CU147 and APDI 8010945 for the same application.

What This Radiator Helps Address

  • Overheating caused by a restricted or aging radiator core
  • Coolant leaks from corroded tanks or weakened seams
  • Reduced cooling efficiency in Toyota Pickup and 4Runner applications
  • Oil cooler service needs in vehicles equipped with the listed radiator configuration
  • Cooling-system maintenance on older Toyota truck and SUV platforms

Installation Notes

  • Fits 1985 Toyota 4Runner.
  • Fits 1986-1988 Toyota 4Runner, N/A, use Mini 13 psi Cap for proper fitment; 3 Row All Metal.
  • Fits 1988-1995 Toyota Pickup, N/A, use Mini 13 psi Cap for proper fitment; 3 Row All Metal.
  • Verify inlet and outlet orientation before installation: inlet right, outlet left.
  • Confirm radiator cap selection for the listed Mini 13 psi cap note where specified.
  • Check surrounding hoses, mounts, and cooling-system condition during replacement.

Quality Assurance

CSF radiators are manufactured in ISO/TSO-certified facilities and built for performance-focused cooling applications. Part Number 2306 reflects CSF’s long-running radiator program for Toyota Pickup and 4Runner coverage.

Related reading

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeTransmissionLitersCylindersFuel TypePositionNotes
1995ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1994ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1993ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1992ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1991ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1990ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1989ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1988Toyota4Runner4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1988ToyotaPickup4WDAutomatic2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1987Toyota4Runner4WD—2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1986Toyota4Runner4WD—2.4LL4GASN/AUse Mini 13 psi Cap for proper fitment.; 3 Row All Metal
1985Toyota4Runner——2.4LL4—N/A3 Row All Metal
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8010945Autolite — 147Champion Spark Plug — 18Champion Spark Plug — 20Spectra Premium — CU14716400 - 353808010147TO3010252