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Buy Toyota 1603138010 — auto part
4 offers · from 56,77 $

Toyota1603138010

Water Inlet Sub-Assembly with Thermostat

Best offer4.8
57 $per item
In stock
Delivery to —15–17 days
Selling auto parts since 20092 own warehouses · Dubai and EuropeMore about Partoza
RatingStockDeliveryPrice
Water Inlet Sub-Assembly with Thermostat
4.8
881 pcs.
20–22 days
57 $
4.8
769 pcs.
15–17 days
57 $
4.8
100 pcs.
13–15 days
76 $

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Fitment

1 make · 13 models · 104 trims

Reference list only. Before ordering, verify the article number by VIN or contact a manager.

Direct from suppliers and manufacturersDelivery to 60+ countriesAbout company and warehouses

Toyota 1603138010 — Water Inlet Sub-Assembly with Thermostat

Overview

Cooling system water inlet housing assembly Toyota 1603138010 directs coolant flow from the radiator into the engine block while regulating engine operating temperature. This unit includes an integrated thermostat featuring a standard opening temperature of 82 °C. The housing body is manufactured from cast aluminium alloy and heat-resistant thermoplastic, fitted with an integrated EPDM rubber sealing gasket. Hose connection outer diameter measures 38 mm, mounting hole centre distance measures 75 mm, and the thermostat valve disc diameter measures 56 mm. OEM cross-reference number is Toyota 16031-38010. Precise factory dimensions prevent coolant leakage, pressure loss, and engine overheating under heavy load conditions.

This thermostat inlet assembly fits Toyota Land Cruiser 200, Tundra, and Sequoia models, as well as Lexus LX570 and GX460 vehicles equipped with 4.6 L (1UR-FE) and 5.7 L (3UR-FE) V8 petrol engines manufactured between 2007 and 2021. Replacement is required when the thermostat valve sticks open or closed, the plastic housing develops hairline cracks, mounting flanges warp, or coolant seeps past the seal face. Installing a new housing assembly restores correct coolant circulation, normalises engine warm-up times, and maintains steady thermal control during towing or high ambient temperatures.

Toyota 1603138010 — water inlet sub-assembly with thermostat. 4 offers available, starting from 56.77 USD.

Specifications

Manufacturer — Toyota. Article number — 1603138010. Name — Water Inlet Sub-Assembly with Thermostat. Offers — 4. From — 56.77 USD.

Compatible cross-references

Replacements and analogues: FISPA 94731, GATES TH45882G1, MOTORAD 63782K, NRF 725397, TAMA WHTC82.

How to order on Partoza

Enter brand Toyota and article 1603138010 in search — you'll see every available offer from verified suppliers with prices and delivery time to your city. Pick one and place the order. Not sure about fitment? Check applicability by VIN in the section above or contact our support.