One Stop Solutions 1531 Radiator
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One Stop Solutions

One Stop Solutions 1531 Radiator

Brand One Stop Solutions 1531
Cap Included NO
Core Height 23 5/8
Core Material PA
Core Row Quantity 1
Core Thickness 16
Core Thickness 5/8
Core Width 14 7/8
Down Flow Or Cross Flow Type CROSSFLOW
Engine Oil Cooler Diameter 1 1/4
Engine Oil Cooler Included YES
Engine Oil Cooler Type CONCENTRIC
Inlet Diameter 1 5/16
Inlet Header Length 16 5/8
Inlet Header Width 2 7/16
Oil Cooler Fittings Distance Apart 11 1/2
Outlet Diameter 1 5/16
Outlet Header Length 16 5/8
Outlet Header Width 2 7/16
Tank Material PLASTIC
Transmission Oil Cooler Included NO
Transmission Oil Cooler Type NONE
Fits Chevrolet, GMC, and Isuzu · 10 vehicles

O.E. form and function. Engineered for a drop-in fit with hassle-free installation.

Premium aluminum construction. Cadmium-plated tubes help resist premature failure.

Leak-resistant design. A die-cut gasket helps ensure a secure seal.

Cross-references APDI 8011531, Four Seasons 20677 and Four Seasons 56559 for the same application. See all 5.

$120.92Free shipping
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Order total $120.92
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Radiator for S10, Sonoma, and Hombre

One Stop Solutions Part Number 1531 is an OSC Premium new automotive radiator built for OE-style form and function. It is engineered for the 1995-1998 Chevrolet S10, 1995-1998 GMC Sonoma, and 1996-1997 Isuzu Hombre applications listed below, with a crossflow design and integrated engine oil cooler for the specified vehicles.

  • Fits 1995-1998 Chevrolet S10, N/A, w/EOC; 1-1/4" core; enhanced unit; 15" core
  • Fits 1995-1998 GMC Sonoma, N/A, w/EOC; 1-1/4" core; enhanced unit; 15" core
  • Fits 1996 Isuzu Hombre, N/A, radiator with EOC, 1-1/4" core, and enhanced design
  • Fits 1997 Isuzu Hombre, N/A, to 2/97; w/EOC; 1-1/4" core; enhanced unit; to 2/97
  • Crossflow radiator design with plastic tanks and PA core material
  • Engine oil cooler included; transmission oil cooler not included
  • Inlet and outlet diameters: 1 5/16 in.
  • Core dimensions: 23 5/8 in. height, 14 7/8 in. width, 5/8 in. thickness

Built Around OE Specifications

This radiator uses premium-grade aluminum construction with cadmium-plated tubes to help resist premature failure. OSC also uses a die-cut gasket for sealing, and each unit is pressure tested during production. The design follows OE cooler layouts where originally equipped, including concentric engine oil cooler configuration for the listed applications. Part Number 1531 is a direct replacement choice for drivers servicing a Chevrolet S10 radiator, GMC Sonoma radiator, or Isuzu Hombre radiator with the specified enhanced cooling setup.

This part cross-references Spectra Premium CU1531 and APDI 8011531 for the same application.

Common Problems This Radiator Addresses

  • Coolant leaks from an aging or damaged radiator tank, core, or seal area
  • Overheating caused by restricted flow or reduced cooling efficiency
  • Oil cooler-related heat management issues on vehicles equipped with an engine oil cooler
  • Fitment problems from a radiator that no longer matches OE dimensions
  • Premature failure in higher-mileage trucks and compact pickups

Installation Notes and Tips

Verify the vehicle’s radiator configuration before installation, especially the engine oil cooler setup and the 1-1/4" core specification noted in the fitment data. Compare inlet and outlet sizes, header dimensions, and overall core measurements to the original unit before removal. Part Number 1531 includes the radiator assembly only as configured by the manufacturer; cap is not included.

Quality Assurance

OSC tests the cooler circuits before tank installation, checks the core before assembly, and tests the completed radiator again after assembly. The design also incorporates enhancements such as increased fin density and thicker core construction to address heat load in higher-mileage vehicles.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
1998ChevroletS10Automatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
1998GMCSonomaAutomatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
1997ChevroletS10Automatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
1997GMCSonomaAutomatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
1997IsuzuHombreAutomatic2.2LL4N/ATo 2/97; w/EOC; 1-1/4" CORE; ENHANCED UNIT; TO 2/97
1996ChevroletS10Automatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
1996GMCSonomaAutomatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
1996IsuzuHombreAutomatic2.2LL4N/ARadiator with EOC, 1-1/4" core, and enhanced design
1995ChevroletS10Automatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
1995GMCSonomaAutomatic2.2LL4N/Aw/EOC; 1-1/4" CORE; ENHANCED UNIT; 15" CORE
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8011531Four Seasons — 20677Four Seasons — 56559Spectra Premium — CU1531432388