Manifold Absolute Pressure (MAP) Sensor BOSCH 0261230289 - Reliable

In this review the BOSCH 0261230289 MAP sensor is evaluated as a direct-replacement part for select Buick, Cadillac, Chevrolet, GMC, Pontiac, and Saturn models. The bottom line: this sensor is for owners and technicians who need an accurate, OEM-style manifold pressure reading and a straightforward installation. The reviewer found the unit restored expected engine behavior and improved economy in vehicles with compatible engines, and notes that its robust coating and updated chip technology make it a dependable choice for long-term engine management needs.

Key Features

• Premium performance: Provides precise manifold pressure measurement to very fine tolerances so the engine management system can optimize fuel and ignition timing.
• Longer life: A special chemical-resistant coating protects the sensor from intake manifold contaminants, reducing premature failure risk.
• Innovative technology: Bosch updates the internal chip design for improved signal stability and consistent vehicle performance over time.
• Superior engineering: Designed to meet or exceed original equipment specifications to maintain driveability, economy, and emissions control.
• Trouble free installation: OE-identical connector ports and mounting points make the sensor a direct fit for compatible models and simplify the replacement process.
• Wide vehicle compatibility: Fits many Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn applications when matched to the correct engine, making it a versatile service part.

Who It's For

This MAP sensor is best for DIY owners, independent mechanics, and fleet technicians who need a high-quality, OEM-compatible replacement that installs with no modification. It particularly suits vehicles from the listed Buick, Cadillac, Chevrolet, GMC, Pontiac, and Saturn model years where MAP sensor failure produces rough idle, poor economy, or an engine light.

It is not for shoppers who lack the correct engine fitment information; because fit depends on engine and year, buyers should verify compatibility before purchase. If a vehicle requires a different sensor standard or a mass air flow sensor rather than a MAP sensor, this is not the correct part.

Pros & Cons

Pros

• High measurement accuracy helps restore proper fuel trim and engine performance.
• Durable coating and robust construction extend service life in harsh intake environments.
• OE-identical fit and electrical connector reduce install time and mistakes.
• Updated internal electronics improve long-term signal consistency and economy.

Cons

• Compatibility depends on specific engine and model year, so buyers must verify fitment before ordering.
• Some users report mixed outcomes on clearing engine light codes immediately, indicating diagnosis may be required beyond just replacing the sensor.

Specifications

Product type	Manifold Absolute Pressure (MAP) sensor
Brand	Bosch Automotive
Compatibility	Select Buick, Cadillac, Chevrolet, GMC, Pontiac, Saturn models (verify engine fitment)
Design	OE-identical connector and mounting points
Durability feature	Chemical-resistant coating for intake manifold environment
Technology	Updated internal chip for improved signal stability

Our Verdict

The BOSCH 0261230289 MAP sensor is a well-engineered replacement that suits owners and technicians seeking an OEM-style part to restore engine performance and economy. With accurate pressure sensing, durable construction, and an identical fit, it delivers solid value for compatible Buick, Cadillac, Chevrolet, GMC, Pontiac, and Saturn applications, provided fitment is confirmed.

Frequently Asked Questions

Will this sensor clear a check engine light?
Replacing a failing MAP sensor often resolves codes related to manifold pressure, but some engine light conditions require code clearing or additional diagnosis if faults persist.

How difficult is installation?
Installation is generally straightforward because the unit uses OE-identical connector ports and mounting points; many users report completion in about an hour.

Does this fit my vehicle?
Fit depends on model year and engine; verify the specific vehicle fitment using the vehicle checker or OEM part cross-reference before purchasing.