Bosch MAP Sensor 0261230289 Manifold Absolute Pressure Sensor — OE Fit for Select GM Cars, Chemical-Resistant Coating

The BOSCH 0261230289 MAP sensor accurately measures intake-manifold air pressure to restore engine control precision and match original equipment fitment for select Buick, Cadillac, Chevrolet, GMC, Pontiac, and Saturn vehicles.

This Bosch Manifold Absolute Pressure (MAP) sensor is engineered to deliver consistent, factory-level pressure readings that help the engine control unit (ECU make timely adjustments for fuel and ignition. Built with a chemically resistant coating and modern chip technology, the sensor is intended to meet or exceed the vehicle manufacturer's original specifications for performance, economy, and drivability. Compatibility spans many General Motors models and years, but always verify fitment with your vehicle details before purchase.

How does this MAP sensor affect engine performance?

The MAP sensor provides the ECU with real-time intake manifold pressure data used to calculate air mass and adjust fuel delivery and ignition timing. Accurate pressure input helps the engine run more smoothly, supports consistent throttle response, and assists emission controls without altering hardware beyond replacement.

• Restores correct air-pressure readings to the ECU for balanced air-fuel ratios.
• Supports stable idle and reduces surging caused by incorrect pressure signals.
• Helps maintain efficient combustion and responsive throttle behavior.

What makes the Bosch 0261230289 different from aftermarket clones?

Bosch designs this MAP sensor to match original equipment geometry and electrical specifications, using a durable housing and protective coating to resist intake-manifold contaminants. The internal electronics employ updated chip technology for reliable sensing over time, which reduces the likelihood of premature failures common in lower-cost alternatives.

• OE-identical connector and mounting points for straightforward replacement.
• Protective chemical-resistant coating to extend component life in harsh intake environments.
• Continually refined chipset design to improve accuracy and stability.

Will this sensor fit my vehicle and how easy is installation?

This Bosch part is compatible with a long list of Buick, Cadillac, Chevrolet, GMC, Pontiac, and Saturn models—fitment depends on engine and model year. Because the sensor mirrors original attachment points and the electrical connector, most installations are a direct swap requiring only basic hand tools and no vehicle modifications.

• Check the vehicle-fitment tool or VIN-specific guide before ordering.
• OE-matching connector eliminates splicing or adapter needs.
• Typical installation requires removing the old sensor and bolting the replacement in place.

How does this MAP sensor hold up over time?

Bosch uses materials and a protective coating designed to resist chemical exposure and thermal cycles found in the intake manifold, so the sensor remains accurate under typical operating conditions. Proper installation and routine engine maintenance help maximize service life and sustain consistent readings.

• Robust housing resists heat and common intake contaminants.
• Chip-level improvements reduce drift and signal degradation over time.
• Designed to meet or exceed factory performance expectations for longevity.

Who is this for: Technicians, DIY mechanics, and vehicle owners who need a direct-fit, reliable replacement MAP sensor for compatible GM models will find the BOSCH 0261230289 a practical choice. It suits anyone seeking OEM-accurate readings and straightforward installation to restore engine control stability and maintain factory-level performance and emissions behavior. Always confirm your specific vehicle and engine application before purchase to ensure compatibility.