CSF 2651 Radiator
OE Quality 60-Day Returns
CSF
 1 Row Plastic Tank Aluminum Core

CSF 2651 Radiator

Brand CSF 2651
Core Thickness 7/8
Core Width 27 1/16
Core Material Aluminum
Tank Material Plastic
Core Length 14 7/8
Inlet Diameter 1 3/8 right
Outlet Diameter 1 3/8 left
Down Flow Or Cross Flow Type Down flow
Radiator Core Row Quantity 1
Cap Included No
Box Height (in) 4 14/16
Box Length (in) 29 11/16
Box Weight (lbs) 9
Box Width (in) 21 3/4
Csf Cap Number 4502
Hazardous Material No
Inlet Length (in) 27 13/16
Inlet Width (in) 1 9/16
Oil Cooler (in) 11 13/16 (high-effeciency concentric type)
Outlet Length (in) 27 13/16
Outlet Width (in) 1 9/16
Tech Note O.e.m. style plastic tanks & aluminum core.
Product line 1 Row Plastic Tank Aluminum Core
Fits Nissan · 7 vehicles

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

Performance tested. Wind-tunnel validation confirms cooling efficiency in the lab.

Trusted radiator maker. Built by a global supplier with decades of radiator manufacturing experience.

Cross-references APDI 8011573, DENSO Auto Parts 221-3402 and OSC 1573 for the same application. See all 12.

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CSF 2651 Radiator for Nissan Altima

The CSF 2651 is an OE-style radiator built for 1993-1999 Nissan Altima applications. It uses a 1-row aluminum core with plastic tanks, a down-flow layout, and factory-style inlet and outlet sizing for a direct replacement approach.

Key Features

  • Part number 2651 from CSF
  • 1-row radiator with aluminum core and plastic tanks
  • Down-flow design
  • Core thickness: 7/8 in.
  • Core width: 27 1/16 in. and core length: 14 7/8 in.
  • Inlet diameter: 1 3/8 in. right; outlet diameter: 1 3/8 in. left
  • OE-style plastic tank and aluminum core construction
  • Oil cooler section: 11 13/16 in. high-efficiency concentric type

Product Details

CSF manufactures radiators to high-performance standards and validates cooling performance through lab testing, including wind tunnel evaluation. The brand has supplied radiators worldwide for decades and offers a broad catalog of applications, including this CSF 2651 radiator for Nissan Altima models from 1993 through 1999. This part cross-references Spectra Premium CU1573 for the same application.

Common Cooling Issues This Radiator Can Address

  • Cracked or leaking radiator tanks
  • Restricted coolant flow from an aging core
  • Overheating caused by reduced heat transfer
  • Corrosion or internal buildup in the original radiator
  • Fitment problems from a damaged OE-style replacement unit

Installation Notes

Fits 1993-1999 Nissan Altima, N/A. Verify inlet and outlet orientation before installation: inlet is on the right and outlet is on the left. This radiator is designed for use with a mini, 13 psi cap, and CSF cap number 4502 is listed for reference. Confirm all hose connections, transmission or oil cooler routing where applicable, and overall dimensions against the original unit before final assembly.

Quality Assurance

CSF radiators are produced in ISO/TSO-certified factories and engineered for cooling performance validation. The 2651 follows an OE-style plastic tank and aluminum core design for a factory-type replacement on Nissan Altima cooling systems.

Related reading

This part fits 7 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1999NissanAltima2.4LL4N/AOE Style Design; Use Mini, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
1998NissanAltima2.4LL4N/AOE Style Design; Use Mini, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
1997NissanAltima2.4LL4N/AOE Style Design; Use Mini, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
1996NissanAltima2.4LL4N/AOE Style Design; Use Mini, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
1995NissanAltima2.4LL4N/AOE Style Design; Use Mini, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
1994NissanAltima2.4LL4N/AOE Style Design; Use Mini, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
1993NissanAltima2.4LL4N/AOE Style Design; Use Mini, 13 psi Cap; 1 Row Plastic Tank Aluminum Core
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8011573DENSO Auto Parts — 221-3402OSC — 1573Spectra Premium — CU1573159421410 - 1E40021410 - 9E00021460 - 0Z00021460 - 1E40080115948012150NI3010104