# MotoRad 5456-187 UltraStat™ Series Thermostat with Seal for 1997-2006 Buick Rainier

### Specifications

Bypass Diameter: 1.46"

Bypass Length: 1.84"

Flange Thickness: 0.05"

Gasket/Seal Material: Rubber

Installation Tool Included: No

Jiggle Pin Weep Hole: Yes

Number Of Seals: 1

Sealing Flange Outside Diameter: 2.13"

Temperature (Degree): 187F

### Features

-   Heavy gauge stainless steel components offer increased reliability and long-lasting durability
-   Exclusive BLVT™ Valve Technology prevents thermal shock to cooling system components
-   Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX™ wax mixture provides quicker reaction time
-   AccuSpring™ Design for stable temperature control and increased cabin comfort
-   100% tested and calibrated
-   Manufactured with the highest quality materials from an OE supplier

### Product Details

UltraStat™ Series Thermostat with Seal by MotoRad®. Temperature: 187F. The new MotoRad UltraStat® thermostats are an innovative line offering many features and benefits over the original equipment. Heavy gauge stainless steel construction provides the most corrosion resistance of any thermostat on the market. Proprietary BLVT™ valve design technology prevents thermal shock, while the robust AccuSpring™ design provides accurate spring load stabilizing temperature, resulting in increased cabin comfort.

If you are a car junkie, you certainly keep all the systems and parts of your vehicle in perfect condition. Surely, the cooling system is no exception, and if you want your vehicle to function at its full potential, the high-quality performance cooling parts we offer are just what the doctor ordered. This product has a heavy-duty construction to be reliable and durable enough to hold up to hard use and wear. So, if you're looking for performance cooling parts with increased capacity and heat transfer capability, we will have you covered.

Brand: MotoRad

Part Number: 5456-187

UPC: 055644594569

Alternate MPN: 5456187

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2004-2006

Buick

Rainier

2004-2005

Cadillac

CTS

2002-2006

Cadillac

Escalade

2002-2006

Chevy

Avalanche

1998-2002

Chevy

Camaro

1997-2006

Chevy

Corvette

2003-2006

Chevy

Express

2006

Chevy

Monte Carlo

1999-2006

Chevy

Silverado 1500

1999-2006

Chevy

Silverado 2500

2001-2006

Chevy

Silverado 3500

2003-2006

Chevy

SSR

2000-2006

Chevy

Suburban

2000-2006

Chevy

Tahoe

2003-2006

Chevy

Trailblazer

2003-2006

GMC

Envoy

2003-2006

GMC

Savana

1999-2006

GMC

Sierra 1500

1999-2006

GMC

Sierra 2500

2001-2006

GMC

Sierra 3500

2000-2006

GMC

Yukon

2001-2005

GMC

Yukon Denali

2003-2005

Hummer

H2

2003-2006

Isuzu

Ascender

1998-2002

Pontiac

Firebird

2005-2006

Pontiac

Grand Prix

2004-2006

Pontiac

GTO

2005-2006

Saab

9-7X

### 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 5456-187.

**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

-   UltraStat™ Series Thermostat with Seal for Buick Rainier
-   5456-187 fitment
-   MotoRad UltraStat™ Series Thermostat with Seal
-   2004 Buick Rainier UltraStat™ Series Thermostat with Seal

## Details

- **Price:** 21.26 CAD
- **Vendor:** MotoRad
- **Type:** UltraStat™ Series Thermostat with Seal
- **Tags:** 1997-2006 Chevy Corvette, 1998-2002 Chevy Camaro, 1998-2002 Pontiac Firebird, 1999-2006 Chevy Silverado 1500, 1999-2006 Chevy Silverado 2500, 1999-2006 GMC Sierra 1500, 1999-2006 GMC Sierra 2500, 2000-2006 Chevy Suburban, 2000-2006 Chevy Tahoe, 2000-2006 GMC Yukon, 2001-2005 GMC Yukon Denali, 2001-2006 Chevy Silverado 3500, 2001-2006 GMC Sierra 3500, 2002-2006 Cadillac Escalade, 2002-2006 Chevy Avalanche, 2003-2005 Hummer H2, 2003-2006 Chevy Express, 2003-2006 Chevy SSR, 2003-2006 Chevy Trailblazer, 2003-2006 GMC Envoy, 2003-2006 GMC Savana, 2003-2006 Isuzu Ascender, 2004-2005 Cadillac CTS, 2004-2006 Buick Rainier, 2004-2006 Pontiac GTO, 2005-2006 Pontiac Grand Prix, 2005-2006 Saab 9-7X, 2006 Chevy Monte Carlo, 5456-187, Automotive, MotoRad, UltraStat™ Series Thermostat with Seal

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 21.26 CAD | In stock |

## Images

- MotoRad 5456-187 UltraStat™ Series Thermostat with Seal for 1997-2006 Buick Rainier

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-5456-187-ultrastattm-series-thermostat-with-seal)
> Updated: 2026-08-17