7 Top 3-Wire Camshaft Position Sensors and Connectors to Keep Your Engine Humming

Ever wondered what keeps your engine running smoothly, making sure everything fires just right? A big part of that unsung hero role belongs to the camshaft position sensor. Specifically, a 3 wire camshaft position sensor is a common type found in many modern vehicles, playing a crucial role in your car’s brain – the ECU. It tells the engine’s computer exactly where the camshaft is, which is vital for precise engine timing, fuel injection, and overall engine performance. Without it, your car might struggle with rough idling, stalling, or even refuse to start.

When this little component acts up, it often throws a check engine light (CEL) and might even leave you stranded. Replacing or repairing its connection is a smart move for any DIY enthusiast or professional mechanic. That’s why we’ve put together a list of the top 7 3 wire camshaft position sensor options, focusing on connectors, pigtails, and even some actual sensors, to help you get your ride back on track.

Let’s dive in and find the perfect fit for your automotive needs!

1. ICT Billet LS 3-Wire CMP Camshaft Position Sensor Connector (Gen III)

This ICT Billet connector is a lifesaver for anyone working on a Gen III LS series engine. It’s not just a generic plug; it’s assembled with OEM tooling, meaning it’s designed to fit like a glove and function just like the original. If you’re tackling a repair or a custom build on an LS engine, having a high-quality connector that uses OEM harness wire colors makes the job so much easier and ensures a dependable, long-lasting connection.

• Key Features:

  • Assembled with OEM tooling for precise fit and function.
  • Uses OEM connector, lock, seals, and terminals.
  • Features OEM harness wire colors for easy identification.
  • Assembled in Wichita, Kansas, with USA-made OEM grade TXL wire.
  • Compatible with Camshaft Position Sensors for Gen III LS Series Engines.
  • Wire pigtail includes 6 inches of factory color wire.
  • Highest quality wire connectors on the market for reliability.

• Pros:

  • Excellent OEM quality and fit.
  • Made with high-grade, USA-made materials.
  • Simplifies wiring with correct color coding.
  • Very durable and reliable connections.

• Cons:

  • Specifically designed for Gen III LS engines, not universal.
  • It’s a connector pigtail, not the full sensor itself.

• User Impressions: Users rave about the OEM quality and perfect fit, especially for LS swaps and engine rebuilds. Many appreciate the robust construction and the fact that it uses correct wire colors, which saves a lot of headaches during installation. It’s seen as a premium choice for those who want reliability.
  See it on Amazon here

2. ICT Billet LS Gen 4 3-Wire CMP Camshaft Position Sensor Connector

Just like its Gen III counterpart, this ICT Billet connector brings the same level of OEM quality and precision, but specifically tailored for Gen IV LS series engines. If you’re working on a later model LS engine and need to replace a damaged or worn-out 3 wire camshaft position sensor connector, this is an excellent choice. Its commitment to OEM standards ensures you’re getting a durable and reliable connection that will stand the test of time and keep your engine’s timing spot-on.

• Key Features:

  • Assembled with OEM tooling for a perfect, factory-like fit.
  • OEM connector, lock, seals, and terminals used.
  • Features OEM harness wire colors for straightforward installation.
  • Assembled in Wichita, Kansas, with USA-made OEM grade TXL wire.
  • Compatible with Camshaft Position Sensors for Gen IV LS Series Engines.
  • Wire pigtail includes 6 inches of factory color wire.
  • Ensures the most dependable, longest-lasting connections.

• Pros:

  • Top-tier OEM quality specifically for Gen IV LS engines.
  • Durable construction with USA-made components.
  • Correct wire colors simplify installation and reduce errors.
  • Provides a very secure and reliable connection.

• Cons:

  • Exclusively for Gen IV LS engines, not a universal part.
  • Only the connector pigtail, not the complete sensor.

• User Impressions: Customers love the precise fit and robust build, calling it a “must-have” for Gen IV LS projects. The convenience of having pre-colored OEM wires is a huge plus, making wiring jobs much faster and more accurate. It’s highly recommended for anyone looking for a high-quality, reliable replacement connector.
  See it on Amazon here

3. 3 Wire Camshaft Cam Position Sensor Connector Plug Pigtail (2-Pack)

Sometimes you just need a straightforward replacement, and this 2-pack offers just that. These 3 wire camshaft position sensor connector plugs are generic but versatile, coming with a generous 12 inches of wire length. This extra length can be incredibly useful for various repair scenarios, allowing for more flexibility in routing or if you need to cut out a longer section of damaged wiring. Getting two in a pack also means you have a spare for future needs or another project!

• Key Features:

  • Part Numbers: MG643226 MG633228.
  • Wire Gauge: 22AWG for standard electrical connections.
  • Line Length: 30CM (approximately 12 inches) for added flexibility.
  • Product Content: 2Pcs Connector Harness.
  • Universal design requires careful comparison with existing parts.

• Pros:

  • Comes in a convenient 2-pack, offering good value.
  • Longer wire length provides more flexibility for installation.
  • Can be used for a variety of applications if the connector matches.
  • Simple and effective for basic repairs.

• Cons:

  • Generic nature means you must double-check model parameters and pictures for compatibility.
  • May not have the exact OEM fit and finish of brand-specific connectors.

• User Impressions: Buyers appreciate the value of getting two connectors and the extra wire length, which is often a big help. The key takeaway from users is the importance of verifying the plug’s shape and pin configuration against your existing part before purchasing, as its generic nature requires careful matching.
  See it on Amazon here

4. ICT Billet Wire Adapter Harness 48″ LS CMP Camshaft Extension

If your project requires relocating a camshaft position sensor or you simply need more reach for your wiring harness, this 48-inch extension from ICT Billet is exactly what you need. It maintains the same high-quality, OEM-grade construction as their other pigtails, ensuring that extending your harness doesn’t compromise reliability or signal integrity. This is a game-changer for custom LS engine swaps or builds where the factory harness just isn’t long enough.

• Key Features:

  • Assembled with OEM tooling, connectors, locks, seals, and terminals.
  • Uses OEM harness wire colors for seamless integration.
  • Assembled in Wichita, Kansas, with USA-made OEM grade TXL wire.
  • Designed to extend the length of your factory harness.
  • 48-inch camshaft position sensor connector harness.
  • Features highest quality wire connectors for dependable, long-lasting connections.

• Pros:

  • Extremely long (48 inches) for maximum routing flexibility.
  • OEM quality materials ensure reliable signal transmission.
  • USA-made wire and assembly.
  • Perfect for custom builds, engine swaps, or sensor relocation.

• Cons:

  • Only an extension, not a full replacement sensor or pigtail.
  • Primarily designed for LS engines.

• User Impressions: Customers absolutely love the length and the robust quality. It’s frequently highlighted as the perfect solution for anyone doing an LS swap or modifying their engine bay layout where the original wiring falls short. The OEM quality is consistently praised for giving peace of mind.
  See it on Amazon here

5. Generic 2PCS 3-pin 13627525014 Camshaft Position Sensor (BMW Specific)

Unlike most of the other items on this list, this product is an actual 3 wire camshaft position sensor, not just a connector or pigtail. What makes it stand out is that it comes as a 2-pack and is specifically designed for a wide range of BMW models. If your BMW is throwing a P0340 code or experiencing camshaft-related issues, and you’ve verified this part number, this could be a cost-effective solution to restore your engine’s precise timing.

• Key Features:

  • Includes two complete 3-pin camshaft position sensors.
  • Reference Fitment: Extensive list of BMW models (e.g., Z4, X6, 335is, 135i, 535xi, 760Li, etc.).
  • Requires careful comparison of pictures and part numbers for accurate fitment.

• Pros:

  • You get two full sensors, which is great value.
  • Addresses common camshaft position sensor issues directly.
  • Fits a broad range of specified BMW vehicles.

• Cons:

  • Crucially, you must double-check the plug and compatibility with your specific BMW model.
  • “Generic” branding might make some users question long-term reliability compared to OEM BMW parts.
  • Not a universal fit; strictly for the listed BMW applications.

• User Impressions: Users stress the importance of verifying the part number and pictures against their vehicle’s existing sensor. When it fits correctly, customers find it a very economical way to resolve their BMW’s sensor-related issues, particularly appreciating the two-pack for a spare or another vehicle.
  See it on Amazon here

6. MECMO PT2782 Crank Sensor Pigtail Plug, 3-Wire (Multi-Purpose GM)

This MECMO 3-wire pigtail stands out for its incredible versatility and wide compatibility with GM vehicles. Not only can it be used for the camshaft position sensor (CMP), but it’s also suitable for crankshaft position (CKP) sensors, mass air flow (MAF) sensors, and fuel tank pressure (FTP) sensors. This multi-purpose design, combined with robust, durable construction and cross-referencing to several OEM part numbers, makes it an indispensable repair part for many GM owners and mechanics.

• Key Features:

  • Multi-Purpose Wiring Harness: Usable for CKP, CMP, MAF, and FTP sensors.
  • Wide Vehicle Compatibility: Fits many 1989-2010+ Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saturn models.
  • Application: Specifically designed for many GM vehicles with various sensors for Gen 4 and LS series engines.
  • Replacement Part: Cross-references to OEM Part # PT2646, PT2782, PT1604 and Interchange Part # 13580870, 13585316, etc.
  • Durable Construction: Made of copper wires, high-temperature TXL wire, and protective outer covering.

• Pros:

  • Highly versatile for multiple sensor types (CMP, CKP, MAF, FTP).
  • Extremely broad GM vehicle compatibility.
  • Strong and durable construction for long life.
  • Excellent replacement part referencing for easy identification.

• Cons:

  • Still a pigtail, so you’ll need to solder or crimp it into your existing harness.
  • Extensive fitment list requires users to verify their specific model.

• User Impressions: Users frequently praise this pigtail for its wide applicability and durable build. It’s often chosen for its compatibility with numerous GM engines and for being a reliable solution across various sensor types, making it a go-to for many different repairs. The quality of the wire and connector is also highly regarded.
  See it on Amazon here

7. DigiAutoPart Camshaft Position Sensor Connector Wiring Pigtail

The DigiAutoPart pigtail offers a simple, direct replacement solution for your 3 wire camshaft position sensor connector needs. With a compact 10cm (approximately 4 inches) wire harness length, it’s ideal for situations where you just need to replace a damaged plug without a lot of excess wire. Constructed from high-quality plastic and premium copper-, nickel-, or silver-plated electrical terminals, it ensures robust electrical connectivity and greater durability for a long-lasting repair.

• Key Features:

  • Wire Harness Length: 10CM (approx. 4 inches).
  • Direct replacement for easy installation.
  • Constructed from high-quality plastic for greater durability.
  • Premium copper-, nickel-, or silver-plated electrical terminals for robust connectivity.

• Pros:

  • Simple and quick installation.
  • Durable materials for longevity.
  • Ensures excellent electrical conductivity.
  • Cost-effective solution for replacing just the connector.

• Cons:

  • Shorter wire length might not be suitable for all repair scenarios.
  • Generic fitment means checking your old connector carefully is essential.

• User Impressions: Customers appreciate its straightforward nature and the quality of the materials for the price. It’s seen as a reliable fix for a damaged connector when a short pigtail is all that’s needed, helping restore proper engine function efficiently.
  See it on Amazon here

Frequently Asked Questions (FAQ) About 3-Wire Camshaft Position Sensors

Q1: What exactly does a 3-wire camshaft position sensor do?
A: A 3-wire camshaft position sensor (CMP sensor) is a crucial component that monitors the position and rotational speed of the camshaft. It sends this information to the vehicle’s engine control unit (ECU). The ECU then uses this data, along with crankshaft position information, to precisely control engine timing, fuel injection, and ignition timing, ensuring optimal engine performance and efficiency.

Q2: How do I know if my camshaft position sensor is failing?
A: Common symptoms of a failing CMP sensor include a lit “Check Engine Light” (often with diagnostic trouble codes like P0340 or P0341), difficulty starting the engine, rough idling, stalling, reduced fuel economy, and sometimes even engine misfires or power loss. If you experience these issues, it’s a good idea to have your vehicle diagnosed.

Q3: Why is it called a “3-wire” sensor? What are the wires for?
A: A 3-wire sensor typically has connections for:
1. Power (Reference Voltage): Provides the necessary electrical power to the sensor, usually 5V or 12V from the ECU.
2. Ground: Completes the electrical circuit.
3. Signal Output: Carries the electrical pulses from the sensor back to the ECU, indicating the camshaft’s position.

Q4: Can I replace a 3-wire camshaft position sensor myself?
A: For many vehicles, replacing the CMP sensor itself or its pigtail connector is a straightforward DIY task. It usually involves locating the sensor, unplugging the old connector, unbolting the sensor, and installing the new one. However, the difficulty can vary significantly between car models. Always consult your vehicle’s service manual or reliable online resources for specific instructions and safety precautions.

Q5: What’s the difference between a camshaft position sensor (CMP) and a crankshaft position sensor (CKP)?
A: Both are vital for engine timing, but they monitor different components. The CMP sensor tracks the camshaft’s rotation, which determines valve timing. The CKP sensor monitors the crankshaft’s position and speed, which is crucial for piston position and engine RPM. The ECU uses data from both to ensure the correct synchronization of engine cycles.

Q6: Is it better to replace the whole sensor or just the connector pigtail?
A: If diagnostic tests indicate the sensor itself is faulty, replacing the entire sensor is necessary. However, if the sensor is fine but the wiring harness leading to it is corroded, frayed, or the connector is damaged, replacing just the connector pigtail is a cost-effective and efficient solution. Always inspect both the sensor and its wiring thoroughly.

Q7: Will a generic 3-wire camshaft position sensor or connector work for my car?
A: Generic connectors can work, but it’s crucial to compare the connector’s shape, pin configuration, and wire gauge to your vehicle’s original part. Fitment guides and photos are your best friends here. For the sensor itself, generic ones can be cost-effective, but always ensure they explicitly list your vehicle as compatible to avoid performance issues or incorrect readings. When in doubt, opting for an OEM or reputable aftermarket brand specific to your car is often the safest bet for long-term reliability.