# MotoRad 5166KTUS Engine Coolant Thermostat Housing for 1991-2007 Buick Century

### Specifications

Bolt Hole Quantity: 2

Bolts Included: No

Bypass Diameter: 0.92 in

Color: Black, silver

Flange Diameter: 1.8 in

Flange Thickness: 0.05 in

Gasket Or Seal Included: No

Gasket/Seal Material: Rubber

Jiggle Pin Included: No

Material: Steel, Stainless Steel, Copper, Rubber

Number Of Outlet Ports: 1

Number Of Seals: 1

Outlet Diameter: 1.32 in

Start to Open Temperature: 195 Deg. F

### Features

-   Made to keep your vehicle's engine running cool
-   Designed to maintain proper cooling level and prevent overheating
-   Manufactured from high-strength materials to last
-   Durable construction to withstand everyday wear and tear

### Product Details

Engine Coolant Thermostat Housing (5166KTUS) by MotoRad®. Temperature: 195F. MotoRad conducts highly controlled validation using advanced testing equipment that is integrated into the production process of all products.

The cooling system of your automobile is vital to your engine's overall health and longevity. That is why it’s critical to replace leaking, malfunctioning, cracked or otherwise damaged cooling parts and components in time. Without proper cooling, your engine can crack and seize up, which can lead to engine damage. To save your energy, time and money, get the superior OEM parts we offer for your vehicle. Each product is made from high quality materials to maintain proper cooling of your engine and prevent overheating.

Brand: MotoRad

Part Number: 5166KTUS

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

1994-2005

Buick

Century

1994-1996

Buick

Regal

2002-2007

Buick

Rendezvous

1994-1998

Buick

Skylark

2005-2006

Buick

Terraza

2000-2005

Chevy

Impala

1991-2001

Chevy

Lumina

1997-2004

Chevy

Malibu

1995-2005

Chevy

Monte Carlo

1997-2005

Chevy

Venture

1999-2004

Oldsmobile

Alero

1994-1996

Oldsmobile

Ciera

1991-1999

Oldsmobile

Cutlass

1996-2004

Oldsmobile

Silhouette

2001-2005

Pontiac

Aztek

1994-2005

Pontiac

Grand Am

1991-2003

Pontiac

Grand Prix

1999-2006

Pontiac

Montana

2005-2006

Saturn

Relay

### 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 5166KTUS.

**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 Housing for Buick Century
-   5166KTUS fitment
-   MotoRad Engine Coolant Thermostat Housing
-   1994 Buick Century Engine Coolant Thermostat Housing

## Details

- **Price:** 43.07 CAD
- **Vendor:** MotoRad
- **Type:** Engine Coolant Thermostat Housing
- **Tags:** 1991-1999 Oldsmobile Cutlass, 1991-2001 Chevy Lumina, 1991-2003 Pontiac Grand Prix, 1994-1996 Buick Regal, 1994-1996 Oldsmobile Ciera, 1994-1998 Buick Skylark, 1994-2005 Buick Century, 1994-2005 Pontiac Grand Am, 1995-2005 Chevy Monte Carlo, 1996-2004 Oldsmobile Silhouette, 1997-2004 Chevy Malibu, 1997-2005 Chevy Venture, 1999-2004 Oldsmobile Alero, 1999-2006 Pontiac Montana, 2000-2005 Chevy Impala, 2001-2005 Pontiac Aztek, 2002-2007 Buick Rendezvous, 2005-2006 Buick Terraza, 2005-2006 Saturn Relay, 5166KTUS, Automotive, Engine Coolant Thermostat Housing, MotoRad

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 43.07 CAD | In stock |

## Images

- MotoRad 5166KTUS Engine Coolant Thermostat Housing for 1991-2007 Buick Century

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-5166ktus-engine-coolant-thermostat-housing)
> Updated: 2026-08-18