HomeBelts and Cooling > Thermostat and HousingFour Seasons 86316 Engine Coolant Thermostat / Water Outlet Assembly
Part #: 86316

Four Seasons 86316 Engine Coolant Thermostat / Water Outlet Assembly

Water Outlet
⚙️ 40 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$106.82Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Water Outlet
🚗Fitment: Lexus and Toyota, Avalon, Camry, ES350, Highlander, RX350, RX350L, and Sienna
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Thermostat and Water Outlet Assembly

The Four Seasons Water Outlet 86316 is designed to maintain optimal engine temperature by regulating coolant flow. This assembly includes a thermostat and gasket, ensuring a secure and efficient fit for select Lexus and Toyota models.

  • Includes thermostat and gasket for a complete assembly
  • Constructed from durable plastic material
  • Inlet diameter of 1.365 inches for precise coolant flow
  • Mount flange width of 0.396 inches for secure installation
  • Overall height of 2.814 inches to fit designated engine compartments
  • Compatible with Lexus and Toyota vehicles including Avalon, Camry, ES350, Highlander, RX350, RX350L, and Sienna

About the Four Seasons Water Outlet Product Line

The Water Outlet line by Four Seasons focuses on engine coolant components that integrate thermostat functionality with the outlet housing. This design simplifies replacement by combining parts, reducing potential leak points and improving coolant system reliability. The 86316 part number represents a precise fit for specific Lexus and Toyota models, ensuring proper engine temperature regulation.

Product Details and Specifications

This engine coolant thermostat and water outlet assembly features a plastic construction optimized for durability and corrosion resistance. The included thermostat helps regulate engine temperature by controlling coolant flow through the outlet. The inlet diameter of 1.365 inches and mount flange width of 0.396 inches are engineered to match OEM specifications, while the overall height of 2.814 inches ensures compatibility with the engine bay layout of compatible vehicles.

Compatible Vehicles and Common Applications

  • Replacement for thermostat and water outlet assembly in Lexus RX350 and RX350L
  • Engine coolant system repair for Toyota Camry and Avalon models
  • Cooling system maintenance on Toyota Highlander and Sienna
  • Thermostat and outlet assembly replacement for Lexus ES350

Installation Notes and Tips

When installing the Four Seasons 86316 water outlet assembly, ensure the gasket is properly seated to prevent coolant leaks. Verify the thermostat orientation matches OEM specifications for accurate temperature regulation. It is recommended to drain the coolant system before removal and refill with fresh coolant after installation. Inspect surrounding hoses and clamps for wear during replacement.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet or exceed OEM standards for fit and function. The 86316 water outlet assembly includes a thermostat and gasket to provide a reliable seal and consistent engine temperature control. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship.

BrandFour Seasons
Part Number86316
PositionWater Outlet
DescriptionEngine coolant components
Gasket or Seal IncludedYes
Inlet Dia. IN1.365
MaterialPlastic
Mnt Flange Width IN0.396
Overall Height IN2.814
StyleW/ thermostat
Thermostat Included?Included
TypeOutlet

This part fits 40 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2025LexusES350N/AWater Outlet
2024LexusES350N/AWater Outlet
2024ToyotaCamry3.5LV6N/AWater Outlet
2023LexusES350N/AWater Outlet
2023ToyotaCamry3.5LV6N/AWater Outlet
2022LexusES350N/AWater Outlet
2022LexusRX350N/AWater Outlet
2022LexusRX350LN/AWater Outlet
2022ToyotaAvalon3.5LV6N/AWater Outlet
2022ToyotaCamry3.5LV6N/AWater Outlet
2022ToyotaHighlander3.5LV6N/AWater Outlet
2021LexusES350N/AWater Outlet
2021LexusRX350N/AWater Outlet
2021LexusRX350LN/AWater Outlet
2021ToyotaAvalon3.5LV6N/AWater Outlet
2021ToyotaCamry3.5LV6N/AWater Outlet
2021ToyotaHighlander3.5LV6N/AWater Outlet
2020LexusES350N/AWater Outlet
2020LexusRX350N/AWater Outlet
2020LexusRX350LN/AWater Outlet
2020ToyotaAvalon3.5LV6N/AWater Outlet
2020ToyotaCamry3.5LV6N/AWater Outlet
2020ToyotaHighlander3.5LV6N/AWater Outlet
2020ToyotaSiennaN/AWater Outlet
2019LexusES350N/AWater Outlet
2019LexusRX350N/AWater Outlet
2019LexusRX350LN/AWater Outlet
2019ToyotaAvalon3.5LV6N/AWater Outlet
2019ToyotaCamry3.5LV6N/AWater Outlet
2019ToyotaHighlander3.5LV6GASN/AWater Outlet
2019ToyotaSiennaN/AWater Outlet
2018LexusRX350N/AWater Outlet
2018LexusRX350LN/AWater Outlet
2018ToyotaCamry3.5LV6N/AWater Outlet
2018ToyotaHighlander3.5LV6GASN/AWater Outlet
2018ToyotaSiennaN/AWater Outlet
2017LexusRX350N/AWater Outlet
2017ToyotaHighlander3.5LV6N/AWater Outlet
2017ToyotaSiennaN/AWater Outlet
2016LexusRX350N/AWater Outlet

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1049188104919316031310301603131031863169025216W98846

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.