Spectra 98123 HVAC Heater Core - Rear

Spectra 98123 Rear Heater Core for Sienna

The Spectra 98123 HVAC heater core is a rear heater core for 2011-2020 Toyota Sienna models. It is built to match original equipment performance targets for heat transfer and cabin comfort in rear HVAC service.

Key Features

• Rear HVAC heater core for Toyota Sienna applications
• OE-style replacement for rear heat output restoration
• Built with Spectra Premium manufacturing and quality control processes
• Direct fit for 2011-2020 Toyota Sienna, rear
• Part number 98123 for catalog and cross-reference use

Detailed Description

Use Spectra 98123 when servicing the rear heating circuit on a Toyota Sienna. This HVAC heater core is engineered to meet or exceed original equipment performance expectations, helping restore proper coolant-to-air heat exchange in the rear climate system. It is a practical replacement for 2011-2020 Toyota Sienna rear heater core applications where the factory unit has restricted flow, leakage, or reduced heat output. This part cross-references Four Seasons 92254 for the same application.

Common Repair Symptoms

• Weak or uneven rear cabin heat
• Coolant odor inside the vehicle
• Moisture or coolant residue near the rear HVAC case
• Restricted heater core flow from internal buildup
• Temperature control issues in the rear climate system

Installation Notes and Tips

Fits 2011-2020 Toyota Sienna, rear. Confirm the rear HVAC configuration before ordering and compare the original unit to Spectra 98123 for connector, hose, and case alignment. Flush the cooling system and inspect related hoses, clamps, and coolant condition during heater core replacement to help prevent repeat contamination.

Quality Assurance

Spectra Premium uses engineering, manufacturing technology, and quality control processes to produce heater cores that meet or exceed original equipment performance standards for the parts they replace.