| Parameter | Specification |
|---|---|
| Product Name | Crankcase Pressure Sensor |
| COGENG Part Number | 504364902 |
| OEM Equivalent | Case 504364902, Case IH 504364902 |
| Product Type | Crankcase Pressure / Blow-By Sensor |
| Sensor Type | Piezoresistive pressure transducer |
| Output Type | 0.5-4.5V analog or frequency (application dependent) |
| Application | Crankcase pressure monitoring (blow-by detection) |
| Compatible Equipment | Case & Case IH Tractors, Excavators, Heavy Equipment |
| Material | Iron + Rubber (seals: NBR / FKM) |
| Packing | PP bag inside, carton box outside |
| Place of Origin | Guangdong, China |
| Brand Name | COGENG |
| Certification | ISO9001 |
| Supply Capacity | 500 PCS |
| Brand | Part Number |
|---|---|
| COGENG | 504364902 |
| Case | 504364902 |
| Case IH | 504364902 |
| Interchange | 504364903, 504364904, 504364905, 87426964, 87426965 |
| Parameter | Specification |
|---|---|
| Supply Voltage | 5V DC regulated (ECM supplied) or 8-36V DC |
| Output Signal | 0.5-4.5V analog or frequency modulated |
| Current Draw | ≤ 15 mA |
| Response Time | < 10 ms |
| Insulation Resistance | ≥100MΩ @ 500V DC |
| Reverse Polarity Protection | Yes |
| Overvoltage Protection | Yes |
| Parameter | Specification |
|---|---|
| Pressure Range | -100 mbar to +500 mbar (-1.45 psi to +7.25 psi) |
| Measurement Type | Differential / Gauge pressure |
| Accuracy | ±1.0% to ±2.0% of full scale |
| Overpressure Limit | 1,000 mbar (14.5 psi) |
| Burst Pressure | 2,000 mbar (29 psi) |
| Compensated Temperature | -40°C to +105°C |
| Pressure (mbar) | Pressure (psi) | Output (V) | Condition |
|---|---|---|---|
| -100 | -1.45 | 0.5 ±0.1 | High vacuum (crankcase vacuum) |
| -50 | -0.72 | 1.5 ±0.1 | Low vacuum |
| 0 | 0 | 2.5 ±0.1 | Atmospheric (normal) |
| 250 | 3.62 | 3.5 ±0.1 | Elevated pressure |
| 500 | 7.25 | 4.5 ±0.1 | High blow-by (warning) |
| Parameter | Specification |
|---|---|
| Connector Type | 3-pin Deutsch DT / AMP |
| Mounting Thread | 1/8"-27 NPT or M10 × 1.0 |
| Hex Size | 19 mm (3/4") |
| Housing Material | Engineering plastic / Zinc-plated steel |
| Diaphragm Material | Silicone / Stainless steel |
| Seal Material | NBR / FKM (Viton) |
| Weight | 0.06 - 0.10 kg (0.13 - 0.22 lbs) |
| Overall Length | 55-65 mm |
| Pin | Function | Signal Type | Wire Color (Typical) |
|---|---|---|---|
| Pin 1 | Sensor Supply (+5V or +24V) | 5V/24V DC | Red |
| Pin 2 | Sensor Signal | 0.5-4.5V / Frequency | Yellow/White |
| Pin 3 | Sensor Ground (0V) | 0V | Black |
| Parameter | Rating |
|---|---|
| Operating Temperature | -40°C to +105°C (-40°F to +221°F) |
| Storage Temperature | -40°C to +125°C (-40°F to +257°F) |
| Ingress Protection | IP67 / IP69K (connector mated) |
| Vibration Resistance | 15G @ 50-2000Hz |
| Shock Resistance | 50G |
| Media Compatibility | Air, crankcase gases, oil mist |
| Corrosion Protection | 500+ hours salt spray |
| Function | Description |
|---|---|
| Blow-by Detection | Monitors combustion gases escaping past piston rings into crankcase |
| Engine Protection | Alerts operator when crankcase pressure exceeds normal limits |
| Emissions Control | Monitors closed crankcase ventilation (CCV) system function |
| Maintenance Alert | Indicates when crankcase filter needs replacement |
| Condition | Pressure Reading | Indication |
|---|---|---|
| Engine off / atmospheric | 0 mbar (2.5V) | Normal |
| Normal operation | 0 to +50 mbar | Normal (slight positive) |
| Slight blow-by | +50 to +150 mbar | Monitor / scheduled maintenance |
| Excessive blow-by | +150 to +300 mbar | Warning - service soon |
| Critical blow-by | +300 to +500 mbar | Alert - service immediately |
| Crankcase vacuum (CCV system) | -50 to -100 mbar | Normal for systems with suction |
| Model Series | Models | Application |
|---|---|---|
| Magnum Series | 180, 190, 200, 210, 220, 230, 240, 250, 260, 280, 305, 315, 335, 380 | Crankcase pressure monitoring |
| Puma Series | 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 210, 220, 230, 240 | Crankcase pressure monitoring |
| Steiger Series | 335, 350, 370, 385, 400, 420, 435, 450, 470, 480, 485, 500, 520, 530, 540, 550, 560, 570, 580, 590, 600, 620, 640 | Crankcase pressure monitoring |
| Optum Series | 270, 300 | Crankcase pressure monitoring |
| Maxxum Series | 110, 115, 120, 125, 130, 135, 140, 145 | Crankcase pressure monitoring |
| Farmall Series | 55, 65, 75, 85, 95, 105, 115, 120, 125, 130, 140 | Crankcase pressure monitoring |
| Vestrum Series | 100, 110, 120, 130 | Crankcase pressure monitoring |
| Series | Specific Models |
|---|---|
| Magnum Series | Case IH Magnum 180, 190, 210, 220, 230, 240, 250, 260, 270, 280, 290, 305, 315, 335, 340, 380 |
| Puma Series | Case IH Puma 130, 140, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 210, 220, 230, 240 |
| Maxxum Series | Case IH Maxxum 100, 110, 115, 120, 125, 130, 140, 145, 150 |
| Optum Series | Case IH Optum 270, 300 |
| Steiger Series | Case IH Steiger 350, 370, 400, 420, 450, 470, 480, 500, 530, 550, 580, 600, 620 |
| Combine Harvesters | Case IH 5088, 6088, 7088, 7120, 7130, 7140, 7230, 7240, 7250, 8230, 8240, 8250, 9230, 9240, 9250 |
*Note: This crankcase pressure sensor is commonly used in FPT (Fiat Powertrain Technologies) engines found in Case IH equipment. OEM part number 504364902 also replaces Case IH numbers 504364902, 504364903, 504243205 (different versions/batches)*
| Model Series | Models | Application |
|---|---|---|
| CX Series | CX130, CX160, CX180, CX210, CX240, CX290, CX330, CX350, CX370, CX470, CX490, CX750, CX800 | Crankcase pressure monitoring |
| Engine Family | Displacement | Applications |
|---|---|---|
| FPT Cursor 9 | 8.7L | Magnum, Puma tractors |
| FPT Cursor 13 | 12.9L | Steiger, Optum tractors |
| FPT NEF | 4.5L, 6.7L | Farmall, Maxxum tractors |
| FPT F5 | 3.4L, 4.5L | Vestrum, smaller tractors |
Note: Verify compatibility with your equipment model, engine serial number, and production year before ordering. Contact COGENG with your machine details for exact application verification.
✔ OEM Replace Number: 504364902, also replaces 504364903, 504243205 – direct fit for Case IH tractors with FPT engines
✔ Precision Measurement: Accurately monitors crankcase pressure and blowby for optimal engine performance and emissions compliance
✔ Wide Compatibility: Works with Magnum, Puma, Maxxum, Optum, Steiger series tractors and Case IH combine harvesters
✔ Heavy Duty Construction: Heat, oil and vibration resistant for demanding agricultural environments
✔ Plug & Play Installation: Direct replacement, no calibration required
✔ Cost Effective: OEM quality at competitive price
| Feature | Benefit |
|---|---|
| Precision piezoresistive element | Accurate low-pressure readings (±1-2% FS) |
| Temperature compensation | Consistent readings across operating range |
| Sealed electronics | IP67/IP69K for harsh environments |
| OEM-spec connector | Direct fit to engine harness |
| EMI protection | Resists electrical noise |
| 100% factory tested | Every sensor individually verified |
| Plug-and-play | Direct replacement, no calibration required |
| Oil mist resistant | Withstands crankcase environment |
Frequently Asked Questions
Q: What are the symptoms of a failing crankcase pressure sensor on Case IH equipment?
A: Common symptoms include active diagnostic trouble codes related to the crankcase pressure sensor circuit, inaccurate or erratic pressure readings, the engine entering a derate or limp mode, poor engine performance, increased oil consumption, visible oil leaks from seals due to excessive crankcase pressure, or the engine emissions system failing to operate correctly. A faulty crankcase pressure sensor can lead to engine damage if excessive crankcase pressure goes undetected.
Q: How does the crankcase pressure sensor affect engine operation?
A: The 504364902 sensor continuously monitors crankcase pressure and transmits real-time data to the engine ECU. This information is used for crankcase ventilation system management, emissions control, and engine health diagnostics. Accurate crankcase pressure sensing is essential for detecting issues such as blow-by, clogged crankcase filters, or ventilation system failures before they cause severe engine damage.
Q: Is this sensor a direct plug-and-play replacement?
A: Yes, the COGENG 504364902 crankcase pressure sensor is manufactured to exact OEM specifications for thread size, electrical connector type, pressure range, output signal characteristics, and mounting dimensions. It is a direct plug-and-play replacement requiring no wiring modifications or adapters when installed on compatible Case IH equipment.
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