Thermostat Gasket — Toyota #16346-66020 | Land Cruiser, Prado, Lexus LX (1FZ-FE, 1HD-T, 1HD-FT, 1HD-FTE, 1HZ, 1PZ, 1VD-FTV)

Genuine thermostat gasket / seal — Toyota part #16346-66020. Seals the thermostat housing against coolant leaks. Always fit a fresh gasket when renewing the thermostat.

At a glance

• Type: Thermostat gasket / O-ring seal
• Toyota part number: 16346-66020
• Engines: 1PZ, 1HZ, 1HD-T, 1HD-FT, 1HD-FTE, 1FZ-F, 1FZ-FE, 1VD-FTV, F33A-FTV

Fitment

• Land Cruiser 70 Series — FZJ70–79, HZJ70–79, HDJ78/79, PZJ70/77 (1984–2007)
• Land Cruiser 80 Series — FZJ80, HZJ80, HDJ80, HDJ81 (1990–1998)
• Land Cruiser 100 Series — FZJ100, HDJ100, HDJ101, HZJ105, FZJ105 (1998–2007)
• Land Cruiser 200 Series — VDJ200 (2007–2021)
• Land Cruiser 300 Series — FJA300 (2021–present)
• Land Cruiser Prado — HZJ70/71/73/74/75/76/77/79, PZJ70/77 (1984–2002)
• Lexus LX 450 — FZJ80 (1996–1997)
• Lexus LX 470 — HDJ100 (1998–2007)
• Lexus LX 570 / LX 460 — VDJ201 (2008–2021)
• Lexus LX 600 / LX 500d — (2022–present)
• Toyota Coaster — HZB30/50 series

Applications vary by year and market — always confirm the part number against your VIN/engine code before ordering.

Genuine or value — your choice. Available as a Toyota Genuine (OEM) part, or as a quality equivalent (AISIN, Blue Print and similar) at a lower price. Select your option above.

Complete the job: Pairs with the 1HZ service kit. Browse more Maintenance Items.