One Stop Solutions 2733 Radiator

OSC Premium Radiator for Cadillac STS and SRX

OSC Premium New Automotive Radiator Part Number 2733 is an OE-style replacement radiator built for select Cadillac STS and Cadillac SRX applications. It uses premium-grade aluminum construction with plastic tanks and a crossflow design to support factory-style cooling performance and fitment.

For 2004-2009 Cadillac STS and 2004-2007 Cadillac SRX applications, this radiator is engineered around the original layout and cooling requirements. The design focuses on accurate fit, leak resistance, and durable construction for vehicles that need a direct radiator replacement.

Key Features

• Part Number 2733 radiator for select Cadillac STS and SRX models
• Crossflow design with 23 5/8 in. core height and 20 11/16 in. core width
• 1 in. core thickness with a single-row core layout
• 1 5/16 in. inlet and outlet diameters
• Premium aluminum core with plastic tanks
• No engine oil cooler and no transmission oil cooler included
• Factory-style fitment with OE performance and quality targets
• Pressure tested during production for leak verification

Detailed Description

OSC Part Number 2733 is designed as an OE replacement radiator for Cadillac STS and Cadillac SRX vehicles that require a crossflow radiator without an integrated cooler. The radiator is built with premium aluminum tubes and fins, plastic tanks, and factory-style header dimensions to match the original cooling system layout. OSC also uses engineering updates aimed at improving durability and cooling consistency in higher-mileage vehicles.

This radiator cross-references APDI 8012733 and Spectra Premium CU2733 for the same application. It is a direct-fit cooling component for 2004-2007 Cadillac SRX, 2005-2007 Cadillac STS, and 2008-2009 Cadillac STS applications, including configurations noted as wo/TOW and wo/EXTERNAL TOC or wo/TOC where listed.

Common Problems This Radiator Can Address

• Coolant leaks from a cracked or aging radiator tank
• Overheating caused by restricted or inefficient heat transfer
• Cooling system failure from worn internal radiator components
• Fitment issues when replacing a damaged OE radiator
• Reduced cooling performance in higher-mileage Cadillac STS or SRX vehicles

Installation Notes and Tips

Verify the vehicle’s radiator configuration before installation, especially tow-package and external transmission oil cooler details. This radiator is a crossflow unit with no cap included, no engine oil cooler, and no transmission oil cooler. Confirm inlet and outlet sizing, header dimensions, and mounting layout against the original part before installation on your Cadillac STS or Cadillac SRX.

Quality Assurance

OSC radiators are individually pressure tested during production, with cooler testing performed before tank installation and again after final assembly. The radiator core is also tested prior to assembly, helping verify sealing and build consistency for the finished unit.