“Engine Coolant Thermostat 90916-03094 Compatible with Toyota Land Cruiser GRJ79 1FZFE 1FZF Engines” has been added to your cart. View cart

Engine Coolant Thermostat 82°C (180°F) for Toyota Lexus GS400 GX470 LS430 LX470 SC400, OEM 90916-03100

Name: Engine Coolant Thermostat 82°C (180°F) for Toyota Lexus GS400 GX470 LS430 LX470 SC400, OEM 90916-03100
SKU: C1688-988778308455
Availability: InStock

$13.72

Shop the 82°C Engine Coolant Thermostat 90916-03100 for Lexus GS430, GX470, LS430 & LX470. Restore optimal engine temperature and performance with this OE-spec replacement.

1000 in stock

Full description

SKU: C1688-988778308455 Category: Engine Thermostat Tags: 90916-03100 thermostat, lexus gx470 coolant thermostat, ls430 engine cooling, lx470 thermostat replacement, toyota 82C thermostat

Description

Key Selling Points

Precision Temperature Control: Specifically calibrated to open at 82°C (180°F) to maintain optimal engine operating temperature and prevent overheating in Lexus and Toyota V8 models.
Certified OE Compatibility: Direct replacement for part number 90916-03100, ensuring a perfect fit for GS400, GS430, GX470, LS400, LS430, LX470, and SC430 vehicles.
Premium Professional Grade: Constructed with high-strength alloys and a durable wax element to withstand extreme thermal cycling and resist corrosion for long-lasting reliability.
Engine Performance Optimization: Helps restore fuel efficiency and reduce engine wear by ensuring the coolant flows correctly through the radiator at the precise thermal threshold.
Direct Bolt-On Installation: Manufactured to original equipment dimensions for a hassle-free, leak-free installation into the factory thermostat housing without modifications.

Technical Specifications

Opening Temperature	82°C (180°F)
OEM Part Number	90916-03100
Material	Stainless Steel / Copper / Wax Element
Fitment Type	Direct Replacement

FAQ Q&A

Q: Is the gasket or O-ring included with this 90916-03100 thermostat?

A: This listing is strictly for the thermostat unit itself. Due to the high-precision requirements of the Lexus V8 cooling system, we recommend purchasing a new OEM-spec gasket separately for a leak-proof seal.

Q: Why is the 82-degree Celsius rating important for my Lexus GX470?

A: The 82°C (180°F) rating matches the original factory specification for Toyota/Lexus V8 engines, ensuring the engine computer receives correct thermal readings for fuel mapping and emissions control.

Q: How do I know if my thermostat is failing and needs replacement?

A: Common symptoms include engine overheating, a 'check engine' light (P0128 code), cabin heater failure, or the temperature gauge staying unusually low. Replacing with part 90916-03100 restores system equilibrium.