# MotoRad 2123KT Engine Coolant Thermostat and Housing Assembly for 2004-2006 Lexus RX

### Specifications

Inlet Port Quantity: 0

Jiggle Pin Included: Yes

Number Of Gaskets: 0

Outlet Port Outside Diameter: 1.43 in

Seal Type: N/A

Gasket/Seal Preinstalled: No

Installation Tool Included: No

Meets or Exceeds Original Equipment Manufacture Specifications: Yes

Number Of Seals: 0

Gasket or Seal Required: Yes

Material: Plastic, Stainless Steel, Copper

Color: Black, Silver, Brass

Inside Diameter: 1.16 in

Inside Diameter: 29.46 mm

Mounting Hardware Included: No

Grade Type: Regular

Gasket Or Seal Included: No

Mounting Hole Quantity: 3

Bolt Hole Center To Bolt Hole Center: 2.41 in

Bolt Hole Center To Bolt Hole Center: 61.21 mm

Start to Open Temperature: 180 Deg. F

Flange Length: 2.20 in

Flange Length: 55.88 mm

Flange Thickness: 0.05 in

Flange Thickness: 1.27 mm

Flange Width: 2.20 in

Flange Width: 55.88 mm

Outlet Port Quantity: 1

Bleeder Hole: Yes

### Features

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

### Product Details

Engine Coolant Thermostat and Housing Assembly 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.

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: 2123KT

UPC: 055644995816

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2004

Lexus

RX

2005

Lexus

RX

2006

Lexus

RX

2004

Toyota

Sienna

2005

Toyota

Sienna

2006

Toyota

Sienna

### 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 2123KT.

**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 and Housing Assembly for Lexus RX
-   2123KT fitment
-   MotoRad Engine Coolant Thermostat and Housing Assembly
-   2004 Lexus RX Engine Coolant Thermostat and Housing Assembly

## Details

- **Price:** 86.49 CAD
- **Vendor:** MotoRad
- **Type:** Engine Coolant Thermostat and Housing Assembly
- **Tags:** 2004-2006 Lexus RX, 2004-2006 Toyota Sienna, 2123KT, Automotive, Engine Coolant Thermostat and Housing Assembly, MotoRad

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 86.49 CAD | In stock |

## Images

- MotoRad 2123KT Engine Coolant Thermostat and Housing Assembly for 2004-2006 Lexus RX

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-2123kt-engine-coolant-thermostat-and-housing-assembly)
> Updated: 2026-08-17