Calorstat BS4541 Brake Light Switch

Name: Calorstat BS4541 Brake Light Switch
Brand: Calorstat
SKU: BVFL-BS4541
Price: 22.29 USD
Availability: InStock

55 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Porsche and Saab, 9-5, 900, 911, Boxster, Carrera GT, and Cayman

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Brake Light Switch for Porsche and Saab

Calorstat BS4541 is a brake light switch for select Porsche and Saab applications. It is a direct-fit electrical switch used to signal brake pedal movement to the vehicle’s lighting and control systems. This part number, BS4541, is listed for multiple Porsche 911, Boxster, Cayman, and Carrera GT model years, as well as Saab 9-5 and Saab 900 applications.

Key Features

Brake light switch for brake pedal signal input
OE-supplier context for Porsche applications noted in fitment data
Direct replacement for select Porsche 911, Boxster, Cayman, and Carrera GT vehicles
Also listed for Saab 9-5 and Saab 900 applications
Cross-reference part numbers include 207118 and 207127

Detailed Description

Calorstat BS4541 is an automotive brake light switch used to activate the rear stop lamps when the brake pedal is pressed. It is listed across a broad range of Porsche and Saab vehicles, including 1998-2013 Porsche 911, 1997-2012 Porsche Boxster, 2006-2012 Porsche Cayman, 2004-2005 Porsche Carrera GT, 1999-2009 Saab 9-5, and 1995-1997 Saab 900. This part number, BS4541, is a practical replacement choice when the original switch is worn, intermittent, or no longer sending a consistent brake signal.

This part cross-references 207118 and 207127 for the same application.

What It Helps Solve

Brake lamps that stay off when the pedal is pressed
Intermittent stop-light operation
Brake pedal signal faults affecting vehicle electronics
Delayed or inconsistent brake light response
Replacement needs for aging switch assemblies on Porsche and Saab models

Installation Notes and Tips

Verify the existing switch connector, mounting style, and vehicle application before ordering. Confirm fitment against the exact model year and platform, especially on Porsche 911, Boxster, Cayman, and Saab 9-5 applications. After installation, test brake lamp operation and check for proper pedal signal response before returning the vehicle to service.

Quality Assurance

Calorstat BS4541 is listed with OE-supplier context for Porsche applications in the fitment data, supporting application-specific replacement selection for the listed vehicles.

This part fits 55 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position	Notes
2013	Porsche	911	3.8L	H6	N/A	Vernet is an OE Supplier to Porsche
2012	Porsche	911	3.8L	H6	N/A	Vernet is an OE Supplier to Porsche
2012	Porsche	Boxster	3.4L	H6	N/A	Vernet is an OE Supplier to Porsche
2012	Porsche	Cayman	3.4L	H6	N/A	Vernet is an OE Supplier to Porsche
2011	Porsche	911	4.0L	H6	N/A	Vernet is an OE Supplier to Porsche
2011	Porsche	Boxster	3.4L	H6	N/A	Vernet is an OE Supplier to Porsche
2011	Porsche	Cayman	3.4L	H6	N/A	Vernet is an OE Supplier to Porsche
2010	Porsche	911			N/A	Vernet is an OE Supplier to Porsche
2010	Porsche	Boxster			N/A	Vernet is an OE Supplier to Porsche
2010	Porsche	Cayman			N/A	Vernet is an OE Supplier to Porsche
2009	Porsche	911			N/A	Vernet is an OE Supplier to Porsche
2009	Porsche	Boxster			N/A	Vernet is an OE Supplier to Porsche
2009	Porsche	Cayman			N/A	Vernet is an OE Supplier to Porsche
2009	Saab	9-5			N/A
2008	Porsche	911			N/A	Vernet is an OE Supplier to Porsche
2008	Porsche	Boxster			N/A	Vernet is an OE Supplier to Porsche
2008	Porsche	Cayman			N/A	Vernet is an OE Supplier to Porsche
2008	Saab	9-5			N/A
2007	Porsche	911			N/A	Vernet is an OE Supplier to Porsche
2007	Porsche	Boxster			N/A	Vernet is an OE Supplier to Porsche
2007	Porsche	Cayman			N/A	Vernet is an OE Supplier to Porsche
2007	Saab	9-5			N/A
2006	Porsche	911	3.8L	H6	N/A	Vernet is an OE Supplier to Porsche
2006	Porsche	Boxster	3.2L	H6	N/A	Vernet is an OE Supplier to Porsche
2006	Porsche	Cayman			N/A	Vernet is an OE Supplier to Porsche
2006	Saab	9-5			N/A
2005	Porsche	911	3.8L	H6	N/A	Vernet is an OE Supplier to Porsche
2005	Porsche	Boxster	3.2L	H6	N/A	Vernet is an OE Supplier to Porsche
2005	Porsche	Carrera GT	5.7L	V10	N/A	Vernet is an OE Supplier to Porsche
2005	Saab	9-5			N/A
2004	Porsche	911	3.6L	H6	N/A	Vernet is an OE Supplier to Porsche
2004	Porsche	Boxster	3.2L	H6	N/A	Vernet is an OE Supplier to Porsche
2004	Porsche	Carrera GT	5.7L	V10	N/A	Vernet is an OE Supplier to Porsche
2004	Saab	9-5			N/A
2003	Porsche	911	3.6L	H6	N/A	Vernet is an OE Supplier to Porsche
2003	Porsche	Boxster	3.2L	H6	N/A	Vernet is an OE Supplier to Porsche
2003	Saab	9-5			N/A
2002	Porsche	911	3.6L	H6	N/A	Vernet is an OE Supplier to Porsche
2002	Porsche	Boxster	3.2L	H6	N/A	Vernet is an OE Supplier to Porsche
2002	Saab	9-5			N/A
2001	Porsche	911	3.4L	H6	N/A	Vernet is an OE Supplier to Porsche
2001	Porsche	Boxster	3.2L	H6	N/A	Vernet is an OE Supplier to Porsche
2001	Saab	9-5			N/A
2000	Porsche	911	3.4L	H6	N/A	Vernet is an OE Supplier to Porsche
2000	Porsche	Boxster	3.2L	H6	N/A	Vernet is an OE Supplier to Porsche
2000	Saab	9-5			N/A
1999	Porsche	911	3.4L	H6	N/A	Vernet is an OE Supplier to Porsche
1999	Porsche	Boxster	2.5L	H6	N/A	Vernet is an OE Supplier to Porsche
1999	Saab	9-5			N/A
1998	Porsche	911	3.6L	H6	N/A	Vernet is an OE Supplier to Porsche
1998	Porsche	Boxster	2.5L	H6	N/A	Vernet is an OE Supplier to Porsche
1997	Porsche	Boxster	2.5L	H6	N/A	Vernet is an OE Supplier to Porsche
1997	Saab	900	2.5L	V6	N/A
1996	Saab	900	2.5L	V6	N/A
1995	Saab	900			N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

124055112405921242551207118207127423334260585583902438159024464890245780963123439966131100099661311001996613111019966131130199661311302

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.