Universal Air EX10678C A/C Expansion Valve

Block Expansion Valve for Lexus ES300h and ES350

Universal Air EX10678C is a block expansion valve for the A/C system on select USA-built Lexus sedans. It is listed for 2016-2018 Lexus ES300h and 2016-2018 Lexus ES350 applications, making it a direct-fit option for common HVAC service work.

Key Features

• Block expansion valve for automotive air conditioning flow control
• Fits 2016-2018 Lexus ES300h, N/A, USA Built; Block Expansion Valve
• Fits 2016-2018 Lexus ES350, N/A, USA Built; Block Expansion Valve
• Universal Air part number EX10678C for catalog matching and service lookup
• Supports A/C refrigerant metering at the evaporator inlet

Product Details

The Universal Air Block Expansion Valve line is built for vehicles that use a block-style A/C metering device rather than a tube-and-fin style restrictor. EX10678C is cataloged for the Lexus ES300h and Lexus ES350 from 2016 through 2018, with USA-built vehicle coverage noted in the fitment data. If you are servicing a Lexus ES300h or Lexus ES350 A/C system and need the correct block expansion valve, EX10678C provides a fitment-specific replacement reference.

Common A/C Issues This Part May Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant flow through the evaporator circuit
• A/C performance changes caused by a restricted or worn metering valve
• Temperature fluctuations during compressor operation
• Service replacement for a failed block expansion valve

Installation Notes and Tips

Verify the vehicle is a USA-built Lexus ES300h or Lexus ES350 from 2016-2018 before ordering. Match the original block-style valve design and inspect the surrounding A/C components for contamination, leaks, or debris before reassembly. Proper evacuation and recharge procedures are required after A/C service.

Quality Assurance

Universal Air catalogs EX10678C as a vehicle-specific HVAC service part for the listed Lexus applications. Confirm fitment by year, model, and build origin before installation.