HVAC Fan Clutch Compatible with 1990-2000 Lexus Ls400 4.0L V8 Thermal Viscous Engine Cooling Temperature Activated Direct Replacement Bolt-On Viscous Drive Replaces GM 89000158 New

GMB HVAC Fan Clutch for 1990-2000 Lexus Ls400 4.0L V8
OEM Grade replacement hvac fan clutch for 1990-2000 Lexus Ls400 with 4.0L V8.

SPECIFICATIONS:
• Type: HVAC Fan Clutch
• Condition: New
• Clutch Type: Thermal (Viscous)
• Rotation: Clockwise
• Mounting: Water Pump Pulley
• Fan Blade Included: No
• Engine: 4.0L V8

REPLACES OEM PART NUMBERS:
• GM 19189665
• GM 89000158
• TOYOTA/LEXUS/SCION 1621050020
• TOYOTA/LEXUS/SCION 1621033011
• TOYOTA/LEXUS/SCION 1621034030
• TOYOTA/LEXUS/SCION 1621034031

APPLICATIONS:
• (1990-2000) Lexus Ls400 4.0L V8

PRODUCT DETAILS:
This thermal viscous fan clutch is a direct OEM replacement for 1990-2000 Lexus Ls400 equipped with 4.0L V8 engines. The fan clutch mounts between the water pump pulley and the engine cooling fan blade, controlling fan engagement based on engine compartment temperature. The thermal fan clutch uses a bi-metallic coil spring that responds to rising radiator heat, engaging the silicone fluid coupling to drive the fan at higher speeds when additional cooling airflow is needed. When the engine is cool or at highway speeds where ram air provides sufficient cooling, the clutch disengages allowing the fan to freewheel, reducing parasitic drag on the engine and improving fuel economy. This temperature-activated design provides the optimal balance between engine cooling performance and mechanical efficiency. The viscous silicone fluid coupling provides smooth progressive engagement without the harsh engagement of a fixed fan drive. Engineered to match OEM specifications for engagement temperature, fan speed range, and torque capacity.

⚠️ Verify vehicle application, engine, and configuration before ordering. Fitment data is provided as a guide only. Not responsible for incorrect purchases. Always confirm your original part number for proper compatibility.