Denso 221-9158 Radiator

Denso 221-9158 Radiator for Lexus RX450h

The Denso 221-9158 radiator is an OE-style cooling replacement built for the 2010-2012 Lexus RX450h. It matches key factory dimensions and connection sizes to support proper engine cooling and consistent fitment.

Key Features

• Core height: 17.7165 in.
• Core width: 30.2362 in.
• Core thickness: 1.0236 in.
• Inlet diameter: 1.3780 in.
• Outlet diameter: 1.3780 in.
• No transmission oil cooler included
• OE-focused radiator construction for factory-style replacement

Detailed Description

Denso radiator Part Number 221-9158 is engineered for the Lexus RX450h with OE-based dimensions, tank configuration, fin pitch, and core materials that align with manufacturer standards. Denso supplies radiators to vehicle manufacturers worldwide, and this experience is reflected in the fitment accuracy and durability testing behind this replacement radiator. This part cross-references Spectra Premium CU13117 for the same application.

Compatible With 2010-2011 Lexus RX450h, engine cooling, and 2012 Lexus RX450h, engine cooling to 01/2012. The Denso 221-9158 is a direct-fit cooling component for drivers replacing a leaking, clogged, or damaged radiator on the Lexus RX450h.

Common Reasons for Replacement

• Coolant leaks from the radiator core, tanks, or seams
• Overheating caused by restricted coolant flow
• Physical damage from road debris or impact
• Corrosion or internal wear in an aging cooling system
• Temperature instability during stop-and-go driving

Installation Notes and Tips

Verify inlet and outlet hose sizes before installation and confirm the vehicle is within the listed RX450h model years. Inspect hoses, clamps, and coolant condition during radiator replacement, and flush the cooling system if contamination is present. Because this radiator does not include a transmission oil cooler, confirm your original setup before ordering.

Quality Assurance

Denso builds this radiator to OE-level standards and subjects it to durability and function testing before release. The result is a radiator intended to deliver reliable cooling performance under demanding operating conditions.