Part #: OR2343

Onix OR2343 Radiator

19 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick and Chevrolet, Century, Impala, Monte Carlo, and Regal
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Radiator for Select GM Applications

Onix OR2343 is a drop-in-fit radiator built for select Buick, Chevrolet, and Pontiac applications that use a 5/8 in. thick core. It is engineered for direct replacement service in vehicles such as the Buick Century, Buick Regal, Chevrolet Impala, and Chevrolet Monte Carlo.

Key Features

  • Direct replacement radiator for select GM passenger cars
  • Drop-in-fit design for straightforward service replacement
  • 5/8 in. thick core specification for the listed applications
  • Built with premium-grade components for dependable cooling performance
  • Onix part number OR2343 for catalog and fitment lookup

Detailed Description

Onix OR2343 is a replacement radiator designed for vehicles that require the specified 5/8 in. thick core configuration. It is listed for 2000-2005 Buick Century, 2000-2004 Buick Regal, 2000-2003 Chevrolet Impala, and 2000-2003 Chevrolet Monte Carlo. For buyers searching for a radiator for 2000-2005 Buick Century or a replacement radiator for 2000-2003 Chevrolet Impala, OR2343 provides a direct-fit service option from Onix. The Onix radiator line is built around engineered components selected to support longer service life and consistent cooling system performance.

What It Helps Address

  • Coolant leaks from a damaged or corroded radiator
  • Overheating caused by restricted or inefficient heat transfer
  • Cooling system performance loss from age-related wear
  • Replacement needs after impact damage or tank failure
  • Service issues on vehicles requiring a 5/8 in. thick core radiator

Installation Notes and Tips

Verify the vehicle’s year, make, model, and core thickness before ordering. Confirm that the existing cooling system matches the listed 5/8 in. thick core application for OR2343. Inspect hoses, clamps, and coolant condition during radiator replacement, and flush the system if contamination or debris is present. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Onix positions this radiator line as a value-focused replacement program with premium-quality construction and engineered components intended to deliver dependable service in the listed applications.

This part fits 19 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005BuickCentury3.1LV6N/Aw/ 5/8 in. Thick Core;
2004BuickCentury3.1LV6N/Aw/ 5/8 in. Thick Core;
2004BuickRegal3.8LV6N/Aw/ 5/8 in. Thick Core;
2003BuickCentury3.1LV6N/Aw/ 5/8 in. Thick Core;
2003BuickRegal3.8LV6N/Aw/ 5/8 in. Thick Core;
2003ChevroletImpala3.4LV6N/Aw/ 5/8 in. Thick Core;
2003ChevroletMonte Carlo3.4LV6N/Aw/ 5/8 in. Thick Core;
2002BuickCentury3.1LV6N/Aw/ 5/8 in. Thick Core;
2002BuickRegal3.8LV6N/Aw/ 5/8 in. Thick Core;
2002ChevroletImpala3.4LV6N/Aw/ 5/8 in. Thick Core;
2002ChevroletMonte Carlo3.4LV6N/Aw/ 5/8 in. Thick Core;
2001BuickCentury3.1LV6N/Aw/ 5/8 in. Thick Core;
2001BuickRegal3.8LV6N/Aw/ 5/8 in. Thick Core;
2001ChevroletImpala3.4LV6N/Aw/ 5/8 in. Thick Core;
2001ChevroletMonte Carlo3.4LV6N/Aw/ 5/8 in. Thick Core;
2000BuickCentury3.1LV6N/Aw/ 5/8 in. Thick Core;
2000BuickRegal3.8LV6N/Aw/ 5/8 in. Thick Core;
2000ChevroletImpala3.4LV6N/Aw/ 5/8 in. Thick Core;
2000ChevroletMonte Carlo3.4LV6N/Aw/ 5/8 in. Thick Core;

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.