# MotoRad 1233-181 Engine Coolant Thermostat for 2015-2021 Lexus NX

### Specifications

Gasket or Seal Required: Yes

Includes Jiggle Pin Check Valve: Internal component

Jiggle Pin Weep Hole: Internal component

Meets or Exceeds Original Equipment Manufacture Specifications: Yes

Sealing Flange Outside Diameter: Internal component

Valve Outside Diameter: Internal component

Bypass Flange Diameter: Internal component

Flange Height: Internal component

Gasket/Seal Preinstalled: No

Height From Flange: Internal component

Jiggle Pin Check Valve Quantity: Internal component

Mounting Depth From Flange: Internal component

Seal Type: N/A

Bypass Flange Length: Internal component

Flange Thickness: Internal component

Height Between Flanges: Internal component

Material: Brass

Outlet Outside Diameter: 0.37 in

Outlet Outside Diameter: 9.40 mm

Design: OEM

Color: Brass

Bolt Hole Quantity: 2

Type: Standard

Height: 0.91 in

Height: 23.11 mm

Grade Type: OEM

Gasket Or Seal Included: No

Gasket Quantity: 0

Start to Open Temperature: 181.0 Deg. F

Outlet Inside Diameter: 0.22 in

Outlet Inside Diameter: 5.59 mm

Installation Tool Included: No

Depth: 0.91 in

Depth: 23.11 mm

Electric: No

### Features

-   Offer precise pressure control
-   Ensure the proper fit
-   Made of high quality materials
-   Easy installation

### Product Details

Engine Coolant Thermostat (1233-181) by MotoRad®. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high-quality product used in their vehicle. As cooling system experts, MotoRad knows what is necessary to manufacture a high-quality part that will stand up to the rigors of today’s demanding cooling system environments where others fail.

MotoRad offers a full line of thermostats to replace original equipment thermostats. These parts are manufactured with high-grade duel bridge stainless steel construction and they meet or exceed all original equipment manufacturer requirements. MotoRad also offers standard thermostats in many alternate temperatures.

Brand: MotoRad

Part Number: 1233-181

UPC: 055644998176

Alternate MPN: 1233181

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2015

Lexus

NX

2016

Lexus

NX

2017

Lexus

NX

2018

Lexus

NX

2019

Lexus

NX

2020

Lexus

NX

2021

Lexus

NX

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the Vehicle Fitment Table above before purchase.

**What part number is this?**  
The listed part number is 1233-181.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match the compatible vehicle applications listed in the fitment table.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering.

### Common Searches

-   Engine Coolant Thermostat for Lexus NX
-   1233-181 fitment
-   MotoRad Engine Coolant Thermostat
-   2015 Lexus NX Engine Coolant Thermostat

## Details

- **Price:** 135.89 CAD
- **Vendor:** MotoRad
- **Type:** Engine Coolant Thermostat
- **Tags:** 1233-181, 2015-2021 Lexus NX, Automotive, Engine Coolant Thermostat, MotoRad

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 135.89 CAD | In stock |

## Images

- MotoRad 1233-181 Engine Coolant Thermostat for 2015-2021 Lexus NX

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-1233-181-engine-coolant-thermostat)
> Updated: 2026-08-17