Ensure precise thermal regulation and peak operating efficiency for your luxury sedan or sport coupe with this premium mechanical Water Pump assembly (OE Part # 16100-39435 / 16100-39436). Specifically engineered for Toyota's refined 2.5-liter and 3.0-liter 4GR-FSE / 3GR-FSE V6 direct-injection engine architectures, this replacement unit delivers steady, optimized coolant circulation to eliminate localized hot spots and prevent thermal fatigue during high-speed cruising.

Vehicle Compatibility & Engine Application:

• Lexus IS 250 / IS 300 (GSE20 / GSE21): 2005–2013 (2.5L / 3.0L V6 4GR-FSE / 3GR-FSE)

• Lexus GS 250 / GS 300 (GRS190 / GRL11): 2005–2020 (2.5L / 3.0L V6 4GR-FSE)

• Toyota Mark X Mk2 (GRX120 / GRX130): 2004–2019 (2.5L / 3.0L V6 4GR-FSE)

Engineering Highlights:

• High-Flow Impeller Profile: Precision-molded vanes maximize fluid throughput to effectively manage the intense thermal demands of high-compression direct-injection blocks.

• Low-Friction Bearing Assembly: Built to handle continuous accessory belt loads smoothly, eliminating operational noise and acoustic whine.