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Sensors For Cummins Marine & Industrial Engines

Every Cummins engine relies on a system of precision sensors to control, monitor, and adjust vital functions. These sensors enable accurate fuel delivery, precise timing, turbocharger response, and thermal regulation. When one of these sensors fails, performance and reliability are directly compromised. At Diesel Pro Power, we carry only the most in-demand and high-quality Cummins engine sensors, in stock and ready to ship within 24 hours.

We specialize in sensors for marine and industrial Cummins engines. Our inventory includes exact-fit replacements for camshaft and crankshaft position sensors, oil pressure sensors, manifold sensors, turbo boost sensors, and coolant/oil temperature sensors.

Position Sensors for Cummins Crankshaft & Camshaft

These sensors determine the rotational position and speed of the crankshaft and camshaft. That information feeds into the ECM (Engine Control Module), which uses it to control ignition timing, injector pulse, and firing order. A failing position sensor can cause hard starts, engine hesitation, or total no-start conditions.

Supported Cummins Engines:

• B Series

• ISB

• QSB

• 6C

• ISC

• QSC

• L10

• ISL

• QSL

• 855

• K19

• QSK19

• M11

• ISM

• QSM

Benefits of Replacing With Diesel Pro:

• Engine-specific sensor fitment

• Restores precise timing signals to ECM

• Includes sealing components for vibration resistance

• Fast shipping reduces downtime

Common Symptoms of Failure:

• Crank but no start

• Sudden engine shutoff

• Fault codes related to timing or RPM

• Misfires or poor throttle response

Oil Pressure Sensors for Cummins Engines

Oil pressure sensors are critical for preventing catastrophic engine damage. These sensors monitor oil pressure and report back to the ECM. If pressure drops below the acceptable threshold, the ECM may trigger a warning or shut down the engine automatically. We stock both 2-prong and 3-prong versions.

Supported Cummins Engines:

• B Series

• ISB

• QSB

• 6C

• ISC

• QSC

• ISX

• QSX

• 855

• N14

• K38

Features:

• Available in standard 2-prong and upgraded 3-prong configurations

• Precision-matched to Cummins thread and voltage requirements

• Sealed for long-term vibration resistance

• Compatible with mechanical or electronic gauges

Common Failure Signs:

• Low oil pressure warning light (even if oil is full)

• Erratic oil pressure readings

• Noisy engine or ticking sounds

• Diagnostic fault codes

Turbo Boost Pressure Sensor for Cummins Engines

Turbocharged Cummins engines rely on accurate boost pressure data to optimize power and fuel efficiency. This sensor reads the air pressure in the intake manifold after compression from the turbo. It's used to adjust fuel mapping and prevent over-boosting.

Supported Cummins Engines:

• B Series

• ISB

• QSB

• 855

• N14

• QSM

• K50

Key Functions:

• Prevents turbocharger overspeed

• Allows ECM to maintain proper air-fuel ratios

• Improves acceleration and torque response

• Supports emissions system operation

When to Replace:

• Turbo lag or hesitation

• Boost-related fault codes

• Decreased fuel economy

• Black smoke or over-fueling

Intake Manifold Temperature Sensor for Cummins Engines

The intake manifold temperature sensor monitors the air temperature entering the cylinders. Accurate readings help the ECM calculate the correct fuel ratio and prevent detonation or pre-ignition. It plays a critical role in both cold starts and under-load efficiency.

Supported Cummins Engines:

• B Series

• ISB

• QSB

• 855

• N14

• L10

• ISL

• QSL

• M11

• ISM

• QSM

• K38

• K50

Why It Matters:

• A faulty IAT sensor can lead to over-fueling

• Helps optimize combustion temperature

• Vital for marine engines operating at high loads and temperatures

Signs of Failure:

• Hard cold starts

• Poor throttle response

• Engine knocking or pinging

• Excessive smoke

Coolant & Oil Temperature Sensor for Cummins Engines

This dual-purpose sensor monitors both coolant and/or oil temperature depending on the application. It helps regulate timing and injection strategy under thermal load and is essential for both emissions control and longevity of the engine.

Supported Cummins Engines:

• 855

• N14

• L10

• ISL

• QSL

• M11

• ISM

• QSM

• K19

• QSK19

• K38

• K50

Functionality:

• Works with both mechanical and electronic ECMs

• Can trigger shutdown for overheating conditions

• Helps prevent heat-soak during heavy-duty marine operation

Failure Indicators:

• Overheating warnings with proper coolant level

• Overly rich fuel mixture

• Long warm-up times

• ECM derating the engine unnecessarily

Manifold Absolute Pressure (MAP) Sensor for Cummins Engines

The MAP sensor measures absolute air pressure within the intake manifold. This data is used by the ECM to fine-tune injector pulse width and boost curves. It’s especially vital for turbocharged industrial and marine engines.

Supported Cummins Engines:

• M11

• ISM

• QSM

Performance Benefits:

• Maintains clean combustion at all altitudes

• Supports precise fuel trimming under heavy load

• Helps reduce black smoke and fuel waste

Replacement Indications:

• Engine surging

• Hesitation under throttle

• Engine warning light with MAP-related codes

• Black smoke

Cummins Engine Sensor Maintenance Tips

Maintaining engine sensors in heavy-duty diesel applications — especially in marine environments — requires attention to vibration, heat, and corrosion. Here’s how to get the most life out of your Cummins sensors:

Regular Inspections

• Check wiring harnesses and plugs for corrosion or fraying

• Inspect sensors for vibration damage, cracked housings, or oil contamination

Scheduled Replacements

• Replace known wear-point sensors like oil pressure, MAP, and crank position at major service intervals

• Never reuse broken or corroded connectors — replace them to avoid false readings

Electrical Contact Best Practices

• Always clean terminals before installing a new sensor

• Use dielectric grease to prevent moisture corrosion in high-humidity environments

Why Buy Cummins Engine Sensors from Diesel Pro Power?

• In Stock & Ready to Ship: Every sensor on our catalog is on-hand and ships within 24 hours

• Engine Model Navigation: Find sensors by model, not part number — B, ISX, QSK, QSM, and more

• Premium Aftermarket Quality: Every sensor meets or exceeds OEM fit and performance standards

• World-Class Support: We help identify the right part and confirm compatibility fast

• Serving Marine & Industrial Professionals: Our catalog is trusted worldwide for uptime-critical diesel operations

Frequently Asked Questions (FAQs)

1. Are your Cummins crankshaft and camshaft position sensors in stock?
Yes — all position sensors listed for Cummins B, ISB, QSB, 6C, ISC, QSC, L10, ISL, QSL, 855, K19, QSK19, M11, ISM, and QSM engines are in stock and ready to ship within 24 hours.

2. Do you stock oil pressure sensors for both 2-prong and 3-prong Cummins applications?
Yes — we carry oil pressure sensors in both 2-prong and 3-prong configurations for Cummins B, ISB, QSB, 6C, ISC, QSC, ISX, QSX, 855, N14, and K38 engines.

3. Can I get same-day shipping on Cummins turbo boost pressure sensors?
Yes — turbo boost pressure sensors for Cummins B, ISB, QSB, 855, N14, QSM, and K50 are in stock and ship the same day when ordered before our cutoff time.

4. Do you offer intake manifold temperature sensors for QSM and ISM engines?
Yes — we stock intake manifold temperature sensors compatible with Cummins B, ISB, QSB, 855, N14, L10, ISL, QSL, M11, ISM, QSM, K38, and K50 engines.

5. Are coolant and oil temperature sensors for Cummins 855, N14, K38, and K50 engines available for immediate shipping?
Yes — we have coolant and oil temperature sensors in stock for all listed applications and ship within 24 hours.

6. Can I order MAP sensors for Cummins ISM and QSM engines today?
Yes — manifold absolute pressure (MAP) sensors for Cummins M11, ISM, and QSM engines are available and ready to ship.

7. Do you ship Cummins engine sensors internationally?
Yes — all sensors are available for international shipping. Most global orders leave our warehouse within 24 hours.

8. Do you offer express shipping for Cummins oil pressure or position sensors?
Yes — we offer multiple expedited shipping options, including next-day delivery in the U.S.

9. Can I buy all my Cummins sensors from a single source?
Yes — Diesel Pro Power is a one-stop shop for high-quality Cummins sensors, including pressure, temperature, boost, and position sensors.

10. How quickly will my Cummins sensor order ship after purchase?
Orders placed during business hours typically ship within 24 hours. You’ll receive tracking information as soon as the order leaves our warehouse.

Get Cummins Diesel Sensors Online

You can depend on us to deliver the Cummins sensors your engine needs to run in top condition. Ask for assistance at any time by calling us at 888-433-4735 (United States) or 305-545-5588 (worldwide). We also have an after-hours assistance form that you can fill out after our office closes.