42059 Bosch MAP/Boost Sensor 0261230302

Genuine Bosch MAP/Boost Sensor 0261230302

Ensure optimal engine performance and fuel efficiency with the Bosch MAP/Boost Sensor 0261230302 (SKU 42-059). This premium OEM-quality manifold absolute pressure sensor is engineered by Bosch to accurately measure intake manifold pressure and provide critical data to the engine control unit, ensuring optimal fuel delivery, ignition timing, and turbocharger boost control. Designed for Holden Astra, Vectra, Zafira, and Saab 9-3 with turbocharged engines, this sensor ensures dependable engine management system performance and long service life for your vehicle.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

Key Features & Benefits

• Genuine Bosch Quality - OEM-grade component built to exacting standards
• Wide Application Range - Fits Holden Astra, Vectra, Zafira, and Saab 9-3
• Turbocharged Engine Compatibility - Designed for turbocharged applications
• Precise Pressure Measurement - Accurately measures manifold absolute pressure and boost
• Optimal Fuel Delivery - Enables precise fuel injection control
• Boost Control - Critical for turbocharged engine boost management
• Engine Protection - Prevents overboosting and engine damage
• Improved Performance - Optimized air/fuel ratio for maximum power
• Enhanced Fuel Economy - Precise metering maximizes efficiency
• Reduced Emissions - Proper fuel delivery reduces harmful emissions
• Reliable Operation - Consistent performance in all conditions
• Long Service Life - Durable construction for extended reliability

Technical Specifications

• Bosch Part Number: 0261230302
• Component Type: MAP/Boost Sensor (Manifold Absolute Pressure)
• Primary Application: Holden Astra, Vectra, Zafira, Saab 9-3
• Weight: 0.25 kg (approximate)

Vehicle Compatibility

This Bosch MAP/Boost sensor is compatible with the following models and engines:

Holden Astra:

• Holden Astra AH (Z18XER turbocharged engine)
• Holden Astra AH (various turbocharged configurations)

Holden Vectra:

• Holden Vectra ZC (turbocharged engine)

Holden Zafira:

• Holden Zafira TT (turbocharged engine)

Saab 9-3:

• Saab 9-3 (turbocharged engine)

Always verify fitment for your specific vehicle and engine configuration.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

OEM Part Number Cross-Reference

This Bosch MAP/Boost sensor replaces the following OEM part numbers:

• 0261230302 (Bosch)
• 0261230042 (Bosch)
• 46769978 (Opel/Vauxhall)
• 90423637 (Opel/Vauxhall)
• 93170309 (Opel/Vauxhall)
• 504064370 (Fiat)
• A116E6063F (Mazda)
• 1238244 (Opel/Vauxhall)
• 95560618000 (Opel/Vauxhall)
• 99660618000 (Opel/Vauxhall)
• MAP-059 / MAP059

Common Symptoms of Faulty MAP/Boost Sensors

• Check engine light with MAP sensor codes (P0105, P0106, P0107, P0108, P0109)
• Poor engine performance and hesitation
• Rough idle or stalling
• Loss of power during acceleration
• Turbo boost issues or lack of boost
• Poor fuel economy
• Black smoke from exhaust (rich condition)
• Difficulty starting the engine
• Engine running in limp mode
• Overboost or underboost conditions
• Increased emissions

What Does a MAP/Boost Sensor Do?

The MAP (Manifold Absolute Pressure) sensor is a critical component of your vehicle's engine management system that measures the pressure inside the intake manifold. The sensor provides real-time data to the engine control unit (ECU) about engine load and boost pressure, allowing the ECU to calculate the correct amount of fuel to inject and optimize ignition timing. In turbocharged applications, the MAP sensor monitors boost pressure to prevent overboosting and engine damage while ensuring maximum performance. The ECU uses MAP sensor data along with other inputs (air temperature, engine RPM, throttle position) to determine the optimal air/fuel ratio for all driving conditions. A properly functioning MAP sensor is essential for maximum power output, fuel efficiency, smooth turbo operation, and emissions compliance.

Why Choose Genuine Bosch MAP/Boost Sensors?

Genuine Bosch MAP/Boost sensors are designed to meet or exceed original equipment specifications, ensuring accurate pressure measurement, reliable operation, and long service life. As a world-leading automotive supplier and original equipment manufacturer for Holden, GM, Opel, Saab, and other major automakers, Bosch engine management components are built to exacting standards with precision engineering and quality materials. Using genuine Bosch sensors ensures proper fitment, maintains your vehicle's engine management system integrity, and provides the reliability you need for worry-free driving.

Installation Notes

Professional installation is recommended for best results. MAP/Boost sensor replacement requires disconnecting the battery, locating the sensor on the intake manifold or turbocharger inlet, disconnecting the electrical connector and vacuum hose (if equipped), and carefully removing the old sensor. Inspect the mounting location and vacuum hose for damage or leaks. Install the new sensor with a new O-ring or seal if required. Reconnect the electrical connector and vacuum hose. Clear any diagnostic trouble codes and test drive to verify proper operation. Ensure all connections are secure to prevent vacuum leaks or boost leaks which can affect sensor readings and turbo performance.

Why Choose LM15 Motorsport?

We supply genuine Bosch engine management components with fast shipping across Australia. Every MAP/Boost sensor is carefully inspected to ensure you receive an authentic Bosch component for reliable engine management system performance. Our team has extensive experience with Holden and European vehicles and can provide expert advice on engine management system maintenance and troubleshooting. Need help with fitment or installation? Contact our expert team for advice specific to your Holden Astra, Vectra, Zafira, or Saab 9-3 MAP/Boost sensor requirements.