Parts for your 2022 Toyota Land cruiser-Thermostat housing

2022 Toyota Land Cruiser Thermostat Housing

Based on technical references — including the Toyota Land Cruiser 300 Series Repair Manual (Cooling System sections for V35A-FTS petrol and F33A-FTV diesel) and the Toyota Electronic Parts Catalogue (EPC) for J300 — the 2022 Toyota Land Cruiser is fitted with a thermostat housing. Toyota describes it as a “water inlet with thermostat” (an integrated assembly). Similar details appear in Lexus service documentation for the V35A-FTS, confirming the same basic hardware. So yes, a thermostat-housing is absolutely relevant on the 2022 Land Cruiser.

The thermostat housing’s job is to hold and seal the thermostat, route coolant between the engine, bypass passages and radiator, and provide mounting for sensors and hose connections. It helps the engine warm up quickly then keeps temps steady under load, towing or long outback hauls. On the 300 Series, the assembly is compact and positioned at the front of the engine where the lower radiator hose connects, aiding quick warm-up and stable cooling in tough Aussie and Kiwi conditions.

As part of routine servicing, it’s smart to inspect the housing for seepage, white or pink crust at joints, and swelling or cracking (especially on composite/plastic units). The O-ring or gasket should be replaced if the housing is removed. Stick with Toyota Super Long Life Coolant (pink, premixed) and don’t mix coolant types. Coolant condition matters more than many think — poor coolant speeds up corrosion at the housing necks and clamps.

Replacement is usually driven by leaks, a stuck thermostat (overheating or very slow warm-up), or brittle hose stubs. When replacing, use a new thermostat/housing assembly where specified, plus a fresh O‑ring. Clean mating faces, lightly lube the O‑ring with coolant, and torque the fasteners to the spec in the Toyota repair manual. After refilling, bleed the system properly — heater on full hot, allow the engine to reach operating temperature, top up as needed, and confirm the fans cycle normally.

• Watch for temp gauge wandering, heater going cold at idle, or coolant smell after shutdown.
• Check hose clamps at the housing after a few heat cycles.
• If towing or touring remote, consider pre-emptive hose and clamp refresh with the coolant service.

This part may be small, but keeping the thermostat housing healthy helps the 300 Series handle big kilometres with confidence.

FAQs

Where is the thermostat housing on a 2022 Land Cruiser?
It’s mounted at the front of the engine where the lower radiator hose connects to the block/water pump area. Access varies slightly between the petrol V6 and the diesel V6, but if you follow the lower hose from the radiator, you’ll land on the housing.

Do they replace the thermostat by itself or the whole housing?
Toyota commonly supplies the thermostat as part of a “water inlet with thermostat” assembly on the J300. In many cases it’s serviced as a complete unit with a new O‑ring, which cuts down on sealing issues. Only reuse the old housing if it’s in top nick and the manufacturer procedure allows.

What coolant should be used and how often should it be changed?
Use Toyota Super Long Life Coolant (pink, premixed). The factory interval is long, but many owners in Australia and New Zealand opt to align coolant changes with heavy-duty use or when any cooling component is opened. Always stick to the specified fluid and never mix types.