Motorad CH1086 lower engine coolant water outlet for the 2016-2018 Lexus IS300 V6 3.5L and other vehicles carries coolant out of the engine. It meets or exceeds all OEM standards.
- Proprietary material made to stand up to demanding cooling systems
- Thermal shock validated and 100% leak tested
Quick facts
- Part: Motorad CH1086 engine coolant water outlet
- Also called: engine coolant thermostat housing
- Fits: 2016-2018 Lexus IS300 V6 3.5L and other vehicles
- Position: Lower
- Material: Metal
- Condition: New
Coolant seepage or crusty residue at the outlet joint, a cracked or warped body, or a steadily dropping coolant level can mean the water outlet needs replacing. A leaking hose, a worn clamp, a failing thermostat or a weak water pump can leave the same drips, so find the cause before buying. This listing is one outlet; the engine takes one.
Fits
It is listed for a wide range of Lexus models, including the 2006-2018 Lexus IS350 V6 3.5L and the 2016-2018 Lexus RC300 V6 3.5L. Open the "Vehicles it fits" section and look up your own model and engine there.
Specifications
Fit and size
- Position: Lower
- Quantity per vehicle: 1
- Mounting holes: 5, each 0.30 in (7.62 mm) or 0.29 in (7.37 mm) in diameter
- Flange thickness: 0.52 in (13.21 mm)
- Height: 5.06 in (128.52 mm)
- Inlet port diameter: 1.55 in (39.37 mm) and 1.26 in (32 mm)
- Outlet port diameter: 0.80 in (20.32 mm), 1.58 in (40.13 mm), 2.11 in (53.59 mm), 0.37 in (9.4 mm) and 0.30 in (7.62 mm)
- Bolt hole center to bolt hole center: 1.88 in (47.75 mm), 2.73 in (69.34 mm), 3.05 in (77.47 mm) and 5.79 in (147.07 mm)
Build and materials
- Material: Metal
- Condition: New
- Country of origin: Japan
In the box
One engine coolant water outlet. A gasket or seal, mounting hardware and a bleeder screw are not included, so plan on new bolts, since the old ones may not be reusable.
Installation notes
- Fit and installation take one step.
- No special tools required.
Interchange: 16304-31037
6801HC · 1630431030 · 1630431031 · 1630431032 · 1630431033 · 1630431034 · 1630431035 · 1630431036 · 9CH1086
This part cross-references / interchanges with the following part numbers:
6801HC, CH1086, 1630431030, 1630431031, 1630431032, 1630431033, 1630431034, 1630431035, 1630431036, 16304-31037, 9CH1086
Frequently Asked Questions
Will the Motorad CH1086 fit a 2016-2018 Lexus IS300 V6 3.5L?
Yes. Motorad CH1086 is listed for the 2016-2018 Lexus IS300 V6 3.5L and for the 2006-2018 Lexus IS350 V6 3.5L.
Does this lower engine coolant thermostat housing come with a gasket?
No. This Motorad CH1086 listing is one water outlet; a gasket or seal, mounting hardware and a bleeder screw are not included.
How thick is the flange on this coolant water outlet?
The flange is 13.21 mm (0.52 in) thick and has five mounting holes, each 7.62 mm or 7.37 mm across.
How can I tell if a lower coolant water outlet is leaking?
With the engine off and cool, look for coolant residue, seepage or cracks at the outlet joint. A shop can pressure-test the cooling system if you want it confirmed.
Do I need special tools to install the Motorad CH1086?
No. Motorad CH1086 fits and installs in one step and needs no special tools.
