Dorman 904-7704 Turbocharger Boost Sensor

Turbo Boost Sensor for OE-Style Performance

This Dorman turbocharger boost sensor is built to match the fit and function of the original sensor on specified vehicles. It is designed for reliable pressure signal monitoring in turbocharged air and fuel delivery systems, with a durable plastic housing and a 4-terminal blade connection.

Key Features

• Direct-fit turbocharger boost sensor for specified applications
• Plastic construction for everyday underhood durability
• 4-terminal blade-style male connector interface
• Rectangle connector shape with bolt-on mount type
• Single-port design with 0.425 in. port outside diameter
• Maximum pressure reading of 94
• OE reference: 21097978
• Part number: Dorman 904-7704

Detailed Description

Dorman 904-7704 is a turbocharger boost sensor engineered to replicate the original sensor’s fit and function on specified turbocharged vehicles. It uses a bolt-on mounting style, a rectangular male connector, and a 4-blade terminal layout to support proper integration with the vehicle’s existing harness and mounting location. The sensor’s single-port design and 94 maximum pressure reading make it a practical replacement for restoring accurate boost pressure feedback in the engine management system. This part cross-references 21097978 for the same application.

What It Helps Address

• Inaccurate turbo boost pressure readings
• Check engine lights related to boost sensor performance
• Intermittent turbo response caused by faulty sensor input
• Driveability issues tied to incorrect pressure data
• Replacement needs for worn or damaged OE boost sensors

Installation Notes and Tips

Verify connector style, terminal count, port size, and mount type before installation. Confirm the sensor location on the vehicle and inspect the mating connector and sealing surfaces for damage or contamination. For search relevance, this turbocharger boost sensor is a direct replacement option for select turbocharged applications, including Dorman 904-7704 for vehicles such as Chevrolet and GMC models where the OE sensor uses the same configuration.

Quality Assurance

This sensor is engineered to match original fit and function and is built for durable, reliable performance in specified applications. Dorman designs replacement components to meet the needs of repair-focused automotive service.