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  See more parts for Porsche 911
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Bosch Relay 191-937-503 - 191-937-503

Bosch Relay 191-937-503

OEM (Original Equipment Manufacturer) parts play a crucial role in the maintenance and repair of vehicles and machinery. Here's why OEM parts are important:
  • Precision and Compatibility: OEM parts are designed and manufactured by the same company that produced the original equipment. This ensures a precise fit and compatibility with the specific make and model of the vehicle or machine. Using OEM parts helps maintain the original performance and functionality.
  • Reliability: OEM parts are known for their reliability and consistency. Manufacturers invest in research and development to continually improve their products, providing customers with reliable components that contribute to the overall durability and longevity of the equipment.
  • Ease of Installation: Since OEM parts are designed to fit perfectly with the original equipment, they often facilitate easier and quicker installations. Mechanics and technicians appreciate the simplicity and efficiency of working with parts that are specifically engineered for the equipment they are servicing.
  • Quality Assurance: OEM parts undergo rigorous testing and adhere to the manufacturer's quality standards. This commitment to quality ensures that the parts meet or exceed the performance specifications required for the equipment. Customers can trust that OEM parts are built to last and maintain the integrity of the original design.

Other Part Numbers:
Bosch #191937503

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Porsche 911 1989 Turbo Carrera
Porsche 911 1989, 1994-1998 Carrera 4
Porsche 911 1989, 1995-1998 Carrera
Porsche 911 1989 Speedster
Porsche 911 1994, 1996 Carrera 2
Porsche 911 1996-1998 Carrera 4S
Porsche 911 1998 Carrera S
Porsche 924 1987-1988 S
Porsche 944 1985-1988, 1990 Base
Porsche 944 1986-1988 Turbo
Porsche 944 1987-1988 S
Porsche 944 1988 Turbo S
Porsche 944 1990-1991 S2
Porsche 968 1992-1993 Base
Bosch invented the first practical magneto, an early ignition electrical source, which provided the spark to ignite the fuel in most of the earliest internal combustion engines, and is still used in general aviation engines. Bosch's corporate logo to this date depicts the armature from a magneto. Bosch was an early manufacturer of Anti-lock Braking System (ABS), and as time passed, Bosch became a leader in such specialized fields as traction control systems (TCS), the Electronic Stability Program (ESP), body electronics (such as central locking, doors, windows and seats), and oxygen sensors, injectors and fuel pumps.

Fuel Pump Warranty

Robert Bosch warrants all Electric Fuel Pumps, fuel pump hanger assemblies, fuel pump modules and (other packaged components) by Robert Bosch to be free of defects in material and workmanship for as long as you own the vehicle in which the electric fuel pumps, fuel pump hanger assemblies, fuel pump modules and (other packaged components) are installed, subject to the terms and restrictions listed within the Limited Lifetime Warranty.

Click here to view Fuel Pump Limited Lifetime Warranty.

Engine Management Warranty

Find all the warranties for engine management components below:

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