# MotoRad 521-180 Engine Coolant Thermostat with Seal for 2004-2009 Cadillac CTS

### Specifications

Bolt Hole Quantity: 2

Color: Silver

Gasket/Seal Material: Rubber

Installation Tool Included: No

Jiggle Pin Weep Hole: Yes

Material: Aluminum, Stainless Steel, Copper

Mounting Hardware Included: No

Mounting Hole Quantity: 2

Number Of Outlet Ports: 2

Number Of Seals: 1

Outlet Diameter: 0.79"; 1.75"

Temperature (Degree): 180F

### Features

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

### Product Details

Engine Coolant Thermostat with Seal by MotoRad®. Temperature: 180F. 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: 521-180

UPC: 055644521800

Alternate MPN: 521180

OE Numbers: 12586468

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2004

Cadillac

CTS

2005

Cadillac

CTS

2006

Cadillac

CTS

2007

Cadillac

CTS

2004

Cadillac

SRX

2005

Cadillac

SRX

2006

Cadillac

SRX

2007

Cadillac

SRX

2008

Cadillac

SRX

2009

Cadillac

SRX

2005

Cadillac

STS

2006

Cadillac

STS

2007

Cadillac

STS

### 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 521-180.

**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 with Seal for Cadillac CTS
-   521-180 fitment
-   MotoRad Engine Coolant Thermostat with Seal
-   2004 Cadillac CTS Engine Coolant Thermostat with Seal

## Details

- **Price:** 85.94 CAD
- **Vendor:** MotoRad
- **Type:** Engine Coolant Thermostat with Seal
- **Tags:** 2004-2007 Cadillac CTS, 2004-2009 Cadillac SRX, 2005-2007 Cadillac STS, 521-180, Automotive, Engine Coolant Thermostat with Seal, MotoRad

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 85.94 CAD | In stock |

## Images

- MotoRad 521-180 Engine Coolant Thermostat with Seal for 2004-2009 Cadillac CTS

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-521-180-engine-coolant-thermostat-with-seal)
> Updated: 2026-08-17