One Stop Solutions 1778 Radiator
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One Stop Solutions

One Stop Solutions 1778 Radiator

Brand One Stop Solutions 1778
Cap Included NO
Core Height 18 11/16
Core Material PA
Core Row Quantity 1
Core Thickness 22
Core Thickness 7/8
Core Width 24 3/4
Down Flow Or Cross Flow Type DOWNFLOW
Engine Oil Cooler Included NO
Engine Oil Cooler Type NONE
Inlet Diameter 1 5/16
Inlet Header Length 25 15/16
Inlet Header Width 2 3/16
Outlet Diameter 1 5/16
Outlet Header Length 25 15/16
Outlet Header Width 2 3/16
Tank Material PLASTIC
Transmission Oil Cooler Diameter 1 1/4
Transmission Oil Cooler Distance between Fittings 16 3/4
Transmission Oil Cooler Included YES
Transmission Oil Cooler Type CONCENTRIC
Fits Toyota · 30 vehicles

O.E. form and function. Engineered for a drop-in fit with no modifications needed.

Premium aluminum construction. Built with cadmium-plated tubes to help resist premature failure.

Pressure tested. Each radiator is tested during production for dependable sealing.

Cross-references APDI 8011778, Four Seasons 56119 and Spectra Premium CU1778 for the same application. See all 6.

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Radiator for Toyota Tacoma Cooling Service

Restore cooling performance with the One Stop Solutions OSC Premium New Automotive Radiator, Part Number 1778. This downflow radiator is built for 1995-2004 Toyota Tacoma applications and follows OES form and function for a direct-fit replacement.

  • Fits 1995-2004 Toyota Tacoma, N/A
  • Downflow radiator design with plastic tanks and a PA core
  • Core dimensions: 18 11/16 in. height, 24 3/4 in. width, 7/8 in. thickness
  • Transmission oil cooler included with concentric cooler design
  • Inlet and outlet diameters: 1 5/16 in.
  • Pressure tested during production for leak verification
  • Die-cut gasket design used to help maintain a secure seal
  • Part Number 1778 is engineered for multi-fit applications without changing the intended look and fit

Built for Tacoma Cooling System Service

This radiator is designed around premium-grade aluminum construction with cadmium-plated tubes inside and out to help resist premature failure. OSC also uses fitted and torqued components to factory specifications, and the radiator includes the transmission oil cooler where originally equipped. For Toyota Tacoma radiator replacement needs, Part Number 1778 provides an OE-style solution with the correct core layout, header sizing, and cooler configuration.

This part cross-references APDI 8011778 and Spectra Premium CU1778 for the same application.

Common Problems This Radiator Can Address

  • Leaking radiator tanks or seams
  • Restricted coolant flow from an aging core
  • Transmission cooler wear in the radiator assembly
  • Overheating caused by reduced heat transfer
  • Fitment issues from a damaged or incorrect replacement radiator

Installation Notes and Fitment Tips

Compatible With 1995-2004 Toyota Tacoma, N/A. Verify inlet and outlet sizing, core dimensions, and transmission cooler layout before installation. The radiator is supplied as a direct replacement for the listed Tacoma applications, and the factory-style configuration helps simplify installation in the engine bay.

Quality Assurance

OSC tests the transmission and engine oil coolers before tank installation, checks the radiator core before assembly, and tests the completed unit again after assembly. The design also incorporates enhancements aimed at addressing original cooling-system failure points in higher-mileage vehicles.

Related reading

This part fits 30 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
2004ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
2004ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
2004ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
2003ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
2003ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
2003ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
2002ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
2002ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
2002ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
2001ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
2001ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
2001ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
2000ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
2000ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
2000ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
1999ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
1999ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
1999ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
1998ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
1998ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
1998ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
1997ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
1997ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
1997ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
1996ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
1996ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
1996ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
1995ToyotaTacomaAutomatic3.4LV6N/A18 5/8" CORE
1995ToyotaTacomaAutomatic2.7LL4N/A18 5/8" CORE
1995ToyotaTacomaAutomatic2.4LL4N/A18 5/8" CORE
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8011778Four Seasons — 56119Spectra Premium — CU17781641007060C1778TO3010177