# MotoRad S401 Engine Coolant Thermostat Seal for 1992-2013 BMW 3-Series

### Specifications

Inside Diameter: 2.01"

Material: Metal, Rubber

Mounting Hole Quantity: 0

Outside Diameter: 2.66"

Style: Metal Clad

Thickness: 0.25"

Type: Thermostat Seal

### Features

-   Made of High quality materials
-   Resistance to high tempertures
-   Provide long lasting seal
-   Adhesive backed
-   Reduced and easy installation

### Product Details

Engine Coolant Thermostat Seal (S401) by MotoRad®. MotoRad seals and gaskets are made from high quality materials suitable for resistance to high temperatures and engine coolant to maintain a superior, long lasting seal.

MotoRad offers an extensive line of adhesive backed thermostat gaskets and rubber seals to support thermostat installation. MotoRad's thermostat gaskets are made from high quality materials suitable for resistance to high temperatures and engine coolant to maintain a good seal. The adhesive backing also reduces installation time by ensuring proper alignment and ease of installation. MotoRad's thermostat seals are precision designed and made from high quality rubber products ensuring an accurate fit and durability for a long lasting seal. When a thermostat requires a single seal for all of its applications, MotoRad includes the seal with the thermostat to service the complete job and ensure customer satisfaction. Also, a seal will be included when precise alignment of the seal to the thermostat is required. This is a benefit to the DIY customer and the professional installer, as this information may only be known by the OEM through service bulletins.

Brand: MotoRad

Part Number: S401

UPC: 055644994017

OE Numbers: 3S9643

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2008

BMW

3-Series

2009

BMW

3-Series

2010

BMW

3-Series

2011

BMW

3-Series

2012

BMW

3-Series

2013

BMW

3-Series

2000

BMW

5-Series

2001

BMW

5-Series

2002

BMW

5-Series

2003

BMW

5-Series

2000

BMW

Z8

2001

BMW

Z8

2002

BMW

Z8

2003

BMW

Z8

1994

Dodge

Ram

1995

Dodge

Ram

1996

Dodge

Ram

1997

Dodge

Ram

1998

Dodge

Ram

1999

Dodge

Ram

2000

Dodge

Ram

2001

Dodge

Ram

2002

Dodge

Ram

2003

Dodge

Ram

2004

Dodge

Ram

2005

Dodge

Ram

2006

Dodge

Ram

1992

Dodge

Viper

1993

Dodge

Viper

1994

Dodge

Viper

1995

Dodge

Viper

1996

Dodge

Viper

1997

Dodge

Viper

1998

Dodge

Viper

1999

Dodge

Viper

2000

Dodge

Viper

2001

Dodge

Viper

2002

Dodge

Viper

2003

Dodge

Viper

2004

Dodge

Viper

2005

Dodge

Viper

2006

Dodge

Viper

2008

Dodge

Viper

2006

Ford

GT

2008

Porsche

Cayenne

2009

Porsche

Cayenne

2010

Porsche

Cayenne

### 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 S401.

**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 Seal for BMW 3-Series
-   S401 fitment
-   MotoRad Engine Coolant Thermostat Seal
-   2008 BMW 3-Series Engine Coolant Thermostat Seal

## Details

- **Price:** 11.35 CAD
- **Vendor:** MotoRad
- **Type:** Engine Coolant Thermostat Seal
- **Tags:** 1992-2006, 1994-2006 Dodge Ram, 2000-2003 BMW 5-Series, 2000-2003 BMW Z8, 2006 Ford GT, 2008 Dodge Viper, 2008-2010 Porsche Cayenne, 2008-2013 BMW 3-Series, Automotive, Engine Coolant Thermostat Seal, MotoRad, S401

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 11.35 CAD | In stock |

## Images

- MotoRad S401 Engine Coolant Thermostat Seal for 1992-2013 BMW 3-Series

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-s401-engine-coolant-thermostat-seal)
> Updated: 2026-08-17