Bosch 77042WS Fuel Filter

Bosch Gasoline Fuel Filter 77042WS

Bosch 77042WS is an in-line gasoline fuel filter built for clean fuel delivery and consistent engine protection. It uses premium materials and Bosch fuel-system expertise to help maintain high filtration efficiency for a wide range of GM and Saturn applications.

Compatible with select Chevrolet Express, GMC Savana, Saturn L-Series, and other gasoline vehicles, this Bosch gasoline fuel filter supports dependable fuel flow while helping capture contaminants before they reach sensitive injection components.

Key Features

• In-line gasoline fuel filter for fuel system service
• Engineered for 99% fuel filtration
• Built with premium quality materials and modern production methods
• Supports clean fuel delivery for injection-system protection
• Fits a broad range of Chevrolet, GMC, Cadillac, Buick, Oldsmobile, Pontiac, and Saturn applications
• Bosch part number 77042WS for direct reference

Product Details

The Bosch Gasoline Fuel Filter line focuses on protecting the engine by removing debris from the fuel stream before it reaches the injection system. Bosch recommends replacing the fuel filter at the manufacturer-specified interval to help preserve performance and extend engine life. This part cross-references GM OE numbers 25121468 and 25319686 for the same application.

Fitment includes 2000 Chevrolet Express 1500, 2000 Chevrolet Express 2500, 2000 Chevrolet Express 3500, 2000 GMC Savana 1500, 2000 GMC Savana 2500, 2000 GMC Savana 3500, 2001-2002 Chevrolet Express 1500, 2001-2002 Chevrolet Express 2500, 2001-2002 Chevrolet Express 3500, 2001-2002 GMC Savana 1500, 2001-2002 GMC Savana 2500, 2001-2002 GMC Savana 3500, and 2001-2005 Saturn L300. Additional coverage includes Saturn L200, LW200, LW300, L100, LS, LS1, LS2, LW1, and LW2, plus select Cadillac, Buick, Oldsmobile, Pontiac, Chevrolet, and GMC models from 1989-1999.

Common Issues This Filter Helps Address

• Restricted fuel flow from a contaminated filter
• Fuel-system debris reaching injectors
• Rough running caused by poor fuel delivery
• Reduced engine performance from filter buildup
• Service intervals missed on high-mileage gasoline vehicles

Installation Notes and Tips

Install Bosch 77042WS in the vehicle’s in-line fuel filter location and verify the fuel type is gasoline before service. Some listed applications note quick-connect ends or stainless-steel construction without hose, so confirm the vehicle’s original filter style and connection type before ordering. Always relieve fuel system pressure and follow the manufacturer service procedure for the specific Chevrolet, GMC, Saturn, Buick, Cadillac, Oldsmobile, or Pontiac model.

Quality Assurance

Bosch fuel filters are produced with modern manufacturing methods and fuel-system engineering knowledge to support consistent filtration performance. Bosch recommends routine replacement at the vehicle manufacturer’s specified interval to help maintain high performance and dependable operation.