OE 12643955 3-Pin Intake Air Pressure MAP Sensor
for GM 6.6L Duramax & 2.0L Engines
Core Product Specifications
| Part Numbers | 12643955, 12612110, 12635044, 2134647 |
|---|---|
| Compatibility | GM 6.6L Diesel & 2.0L Gasoline Engines |
| Connector Type | 3-Pin Weatherproof |
| Output Signal | 0.5-4.5V Linear |
| Operating Temp | -40°C to +150°C |
Optimized for Multiple Applications
This precision-engineered MAP sensor serves critical functions in:
Heavy Trucks: Maintains optimal air-fuel ratio for GM Duramax 6.6L engines in long-haul operations
Agricultural Machinery: Ensures reliable performance in tractors and harvesters
Construction Equipment: Withstands vibration in loaders and excavators
Automotive: Direct replacement for GM 2.0L turbocharged passenger vehicles
Technical Superiority
Key Performance Features
±1.5% Full-Scale Accuracy
IP67 Dust/Water Resistance
5000h Salt Spray Certification
OEM-Equivalent Calibration
Common Application Scenarios
| Vehicle Model | Engine Type | Recommended Part No. |
|---|---|---|
| Chevrolet Silverado HD | 6.6L L5P Duramax | 12643955 |
| GMC Sierra 2500 | 6.6L LML Duramax | 12612110 |
| Buick Regal | 2.0L LTG | 2134647 |
Industry-Specific Failure Solution
Heavy Truck: Boost Pressure Fluctuation
Symptoms: Erratic power output, black exhaust smoke
Diagnosis:
Check MAP sensor voltage at WOT (should be 4.3-4.7V)
Inspect for cracked vacuum lines
Clean carbon deposits from sensor diaphragm
Solution: Replace with OE-grade 12643955 sensor and recalibrate ECM
Why Choose Growshine International?
As specialists in engineering machinery parts, heavy truck components, and agricultural equipment accessories, we combine global sourcing with technical expertise:
15+ Years Cross-Industry Experience
Same-Day Shipping from Global Warehouses
ISO 9001-Certified Quality Control
