10 Best LS1 Camshaft Position Sensors for Optimal Engine Performance

If you’re an LS enthusiast or just someone looking to keep their GM vehicle running smoothly, you know the heart of your engine relies on precision. And when it comes to precision, the LS1 camshaft position sensor plays a surprisingly big role. This tiny but mighty component tells your engine’s computer exactly where the camshaft is, ensuring your fuel injection and ignition timing are spot on.

A failing LS1 camshaft position sensor can lead to all sorts of headaches: rough idling, engine misfires, a stubborn check engine light, or even a no-start condition. That’s why picking the right replacement is crucial for restoring your LS engine’s performance and keeping you on the road.

We’ve scoured the market to bring you a list of the top 10 camshaft position sensors, along with a couple of essential related components, that are perfect for your LS1 or compatible GM vehicle. Let’s dive in and find the best fit for your ride!

Our Top Picks for LS1 Camshaft Position Sensors

1. ACDelco 213-363 GM Original Equipment Engine Camshaft Position Sensor

When it comes to your GM vehicle, sticking with Original Equipment (OE) parts often gives you the best peace of mind, and that’s exactly what the ACDelco 213-363 offers. This sensor is a GM-recommended replacement, meaning it’s manufactured to the same exacting standards as the part that came with your vehicle from the factory. You’re getting the quality, reliability, and durability that GM itself trusts, ensuring a perfect fit and function right out of the box.

• Key Features:
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
• Pros:
  • Guaranteed OEM quality and fit
  • Excellent reliability and longevity
  • Designed specifically for GM vehicles
• Cons:
  • Often priced higher than aftermarket alternatives
  • May not offer performance upgrades
• User Impressions: Owners consistently praise this sensor for its perfect fit and for resolving common engine issues like P0340 codes without any hassle. Many consider it the only option for truly reliable repairs.
• See it on Amazon here

2. MOTOKU Camshaft and Crankshaft Position Sensor for Cadillac, Buick, Hummer, Pontiac, Isuzu, Chevrolet, GMC

The MOTOKU sensor stands out for its incredibly broad compatibility, making it a versatile choice if you’re working on a range of GM vehicles beyond just the LS1. This unit isn’t just a camshaft sensor; it’s also designed to cover crankshaft position sensor applications across numerous Cadillac, Buick, Hummer, Pontiac, Isuzu, Chevrolet, and GMC models from the late 90s to late 2000s. Its extensive list of compatible OEM part numbers means you’re likely to find it’s the right fit for many common LS-based platforms.

• Key Features:
  • Wide compatibility across numerous GM vehicles and years
  • Replaces a large array of OEM part numbers for both cam and crank sensors
  • Designed to meet or exceed original specifications
• Pros:
  • Exceptional vehicle compatibility, useful for various models
  • Cost-effective solution compared to OE parts
  • Acts as a replacement for many different part numbers
• Cons:
  • Might be overwhelming to verify fitment due to the vast list
  • Aftermarket reliability can vary compared to genuine OE
• User Impressions: Customers appreciate the MOTOKU sensor for its affordability and wide application. Many users report it successfully resolves their engine light issues, especially for its given compatibility range.
• See it on Amazon here

3. OTUAYAUTO Camshaft Position Sensor – Replacement for Chevy, GMC, Cadillac

The OTUAYAUTO Camshaft Position Sensor aims to provide an OEM-quality replacement without the dealership price tag. Manufactured to high standards, this sensor is designed to be a direct fit, ensuring a smooth installation process. It also incorporates protective features like sensor sleeves to shield wire leads from heat, which can be a common failure point for electrical components in the engine bay. If you’re looking for a reliable aftermarket option that prioritizes quality control, this one is worth a look.

• Key Features:
  • Meets or exceeds OEM specifications for fitment and performance
  • Constructed from high-quality materials for durability
  • Direct replacement for easy, plug-and-play installation
  • Sensor sleeves protect wire leads from heat
• Pros:
  • Excellent value for money
  • Strict quality testing before shipping
  • Good customer service and refund/exchange policy
• Cons:
  • Aftermarket brand might not have the same long-term reputation as OE
• User Impressions: Users frequently commend the OTUAYAUTO sensor for its ease of installation and for effectively clearing check engine light codes related to the camshaft position sensor, providing a budget-friendly fix.
• See it on Amazon here

4. Delphi SS11368 Engine Camshaft Position Sensor

Delphi is a well-respected name in automotive parts, known for supplying components to original equipment manufacturers. The Delphi SS11368 Engine Camshaft Position Sensor lives up to that reputation, being manufactured in an ISO-certified facility with Delphi-validated parts. What sets this sensor apart is its design for digital output, which aims to maximize the signal-to-noise ratio, providing more accurate data to your engine’s ECU. Its robust construction ensures it’s not easily impacted by temperature changes, promising long-lasting, dependable performance.

• Key Features:
  • Manufactured in a Delphi ISO certified facility
  • Designed digital output for maximum signal to noise ratio
  • All parts used are Delphi validated
  • Not impacted by temperature changes, providing robust protection
• Pros:
  • Reputable brand with OE supplier quality
  • Advanced digital output for accuracy
  • Excellent durability and temperature stability
• Cons:
  • Can be on the higher end of aftermarket pricing
• User Impressions: Many mechanics and DIYers trust Delphi for critical engine sensors. Customers often report that the Delphi SS11368 sensor offers a reliable fix, with the added confidence of a known brand’s quality.
• See it on Amazon here

5. 12561211 Camshaft Position Sensor Compatible with 1999-2006 (A-NAFTULY)

This particular LS1 camshaft position sensor (part number 12561211) from A-NAFTULY focuses on providing a direct, hassle-free replacement for a wide range of popular LS-powered GM trucks, SUVs, and cars from 1999 to 2006. It prides itself on being a plug-and-play installation, making it accessible even for novice mechanics. Plus, it comes with an 18-month worry-free warranty, giving you extra confidence in your purchase.

• Key Features:
  • Direct replacement for numerous popular GM models (Chevy, GMC, Cadillac, Hummer)
  • Plug-in installation method for easy setup
  • Replaces common OEM part numbers
  • Comes with an 18-month worry-free warranty
• Pros:
  • Very wide application across common LS vehicles
  • Straightforward installation for DIYers
  • Solid warranty for peace of mind
• Cons:
  • Generic brand name might raise questions for some users
• User Impressions: Buyers frequently highlight the easy installation and broad fitment of this sensor. The warranty is a significant plus for those looking for assurance when buying aftermarket parts.
• See it on Amazon here

6. Areyourshop LS Camshaft Sensor Plug Kit (551349) LS Gen III to Gen IV Swap

Now, this isn’t a sensor replacement, but a crucial component if you’re diving into engine modifications! The Areyourshop LS Camshaft Sensor Plug Kit is specifically designed for those performing a Gen III LS engine (like your LS1) swap to a Gen IV style camshaft. Gen III engines have their camshaft position sensor at the rear, while Gen IV cams use a front sensor. This kit provides a clean, secure plug for the rear cam sensor hole when you’ve moved to a front-mounted sensor setup. It’s essential for preventing oil leaks and maintaining engine integrity during such a swap.

• Key Features:
  • Specifically for Gen III LS engines when swapping to a Gen IV style camshaft
  • Plugs the rear cam sensor hole on Gen III blocks
  • Includes O-ring, clamp, and bolt for a secure, tight fit
  • Prevents oil leaks after cam swaps
• Pros:
  • Essential for Gen III to Gen IV camshaft conversions
  • Ensures proper sealing and prevents oil leaks
  • Comes with all necessary installation components
• Cons:
  • Not a replacement sensor for a faulty one; serves a different purpose
  • Only relevant for engine modification projects
• User Impressions: Highly praised by engine builders and enthusiasts performing LS swaps, as it provides a neat and reliable solution for blocking off the rear cam sensor port when using a front-mounted sensor.
• See it on Amazon here

7. ICT Billet LS 3-Wire CMP Camshaft Position Sensor Connector Pigtail

Again, not a sensor itself, but an absolutely vital component! The ICT Billet LS 3-Wire CMP Camshaft Position Sensor Connector Pigtail is what you need if your existing sensor connector is damaged, corroded, or you’re custom wiring. ICT Billet is renowned for its high-quality, USA-made components, and this pigtail is no exception. It’s assembled with OEM tooling and uses OEM harness wire colors for a perfect, factory-like fit, ensuring the most dependable and long-lasting connections for your camshaft position sensor. A solid connection is just as important as a good sensor!

• Key Features:
  • Assembled with OEM tooling, connectors, seals, and terminals
  • Uses OEM harness wire colors for easy matching
  • Assembled in Wichita, Kansas with USA-made OEM grade TXL wire
  • Compatible with Camshaft Position Sensors for Gen III LS Series Engines
• Pros:
  • Highest quality wiring and connectors on the market
  • Ensures reliable electrical connection to the sensor
  • OEM-grade materials for durability
• Cons:
  • Only a connector/pigtail, not the sensor itself
  • Requires basic wiring knowledge for installation
• User Impressions: Custom builders and performance shops swear by ICT Billet for their robust and precise components. Users consistently report that this pigtail provides a secure, high-quality connection, eliminating common wiring issues.
• See it on Amazon here

8. Camshaft Position Sensor Fit for 1999-2007 Chevy Silverado, Tahoe, Express, GMC Sierra, Yukon, Savana, Cadillac Escalade, Hummer H2 (IFATRUNK)

This IFATRUNK LS1 camshaft position sensor offers broad compatibility for many popular GM trucks and SUVs, similar to some others on our list. What makes it stand out is its clear explanation of why you might need a new sensor – linking common vehicle problems like hard starting, weak acceleration, and engine shaking directly to a faulty cam sensor. It’s designed as a direct replacement for various OEM part numbers, promising easy plug-and-play installation to get your vehicle back in shape quickly.

• Key Features:
  • Extensive compatibility with numerous Chevy, GMC, Cadillac, and Hummer models
  • Replaces a wide array of OEM part numbers
  • Clearly outlines symptoms of a failing sensor
  • Designed for direct, plug-and-play installation
• Pros:
  • Great compatibility for popular LS-powered vehicles
  • Helps diagnose the issue by listing symptoms
  • Straightforward installation
• Cons:
  • Aftermarket brand, so long-term durability may vary
• User Impressions: Customers appreciate the wide fitment and the clear diagnostic information provided. Many have successfully used this sensor to fix their check engine light and restore normal engine operation.
• See it on Amazon here

9. ICT Billet LS Camshaft Position Sensor Plug LS1 LSX 24X Rear Block

Another top-tier solution from ICT Billet, this specific camshaft position sensor plug is also for those advanced LS engine builders swapping to a front-mounted Gen IV style camshaft. Crafted from aerospace-grade, USA-produced billet aluminum, this plug isn’t just functional; it’s built to last and look great doing it. It effectively seals the rear camshaft sensor hole on all Gen III engine blocks (like the LS1, LM7, LQ4, etc.), ensuring no oil leaks and a clean engine bay aesthetic. Like their pigtail, it comes with all necessary hardware for a complete installation.

• Key Features:
  • Specifically for Gen III LS engines using a Gen IV front cam sensor
  • Plugs the camshaft sensor hole in the rear of the engine block
  • Made from aerospace-grade, USA-produced billet aluminum
  • Includes plug, O-ring, clamp, and bolt
• Pros:
  • Premium quality construction (billet aluminum)
  • Perfect for professional engine builders and enthusiasts
  • Ensures a reliable, leak-free seal
• Cons:
  • Only useful for very specific engine modification scenarios
  • Higher price point due to premium materials
• User Impressions: Builders consistently choose ICT Billet for their quality and precision. This plug is highly rated for its perfect fit, robust construction, and ability to cleanly cap off the rear sensor hole during cam swaps.
• See it on Amazon here

10. Hitachi CPS0202 Engine Camshaft Position Sensor

Hitachi Astemo is a Tier 1 OE supplier, meaning they supply parts directly to car manufacturers for use in new vehicles. This pedigree ensures that the Hitachi CPS0202 Engine Camshaft Position Sensor performs just like original equipment. It’s made from premium-grade raw materials and undergoes rigorous testing, so you can be confident in its quality and reliability right out of the box. If you’re looking for an aftermarket option with OEM-level assurance, Hitachi is an excellent choice.

• Key Features:
  • Hitachi Astemo is a Tier 1 OE supplier
  • Performs like OE to ensure quality
  • Made from premium grade raw materials
  • Carefully designed, precisely manufactured, and rigorously tested
  • Designed and engineered for specific vehicles – exact fit part
• Pros:
  • OE supplier quality at an aftermarket price
  • Exceptional build quality and durability
  • Rigorously tested for reliability
• Cons:
  • Might be slightly more expensive than budget aftermarket brands
• User Impressions: Mechanics often recommend Hitachi sensors for their reliability and precision. Users report that these sensors resolve issues effectively and offer a long service life, giving them confidence in the repair.
• See it on Amazon here

FAQ Section: All Your LS1 Camshaft Position Sensor Questions Answered

Q1: What does an LS1 camshaft position sensor do?

A: The LS1 camshaft position sensor (CPS) monitors the rotational speed and position of the camshaft. This data is sent to the engine’s computer (ECU/PCM), which uses it to determine the precise timing for fuel injection and ignition, ensuring your engine runs efficiently and smoothly. It works in conjunction with the crankshaft position sensor to know exactly where all the pistons are in their cycle.

Q2: What are the common symptoms of a bad LS1 camshaft position sensor?

A: Signs of a failing CPS can include:
* Check Engine Light (CEL): Often accompanied by diagnostic trouble codes (DTCs) like P0340 or P0341.
* Hard Starting or No-Start: The engine may crank but not fire up, as the ECU doesn’t know when to inject fuel or spark.
* Rough Idle or Stalling: Erratic timing can cause the engine to run poorly, especially at idle, or stall unexpectedly.
* Engine Misfires or Poor Performance: Incorrect timing leads to inefficient combustion, resulting in misfires, reduced power, and poor fuel economy.
* Hesitation During Acceleration: The engine may feel sluggish or hesitant when you press the gas pedal.

Q3: Where is the camshaft position sensor located on an LS1 engine?

A: On most Gen III LS engines (including the LS1), the camshaft position sensor is located at the rear of the engine block, just above the oil pan, and typically behind the intake manifold or valley cover. It reads off a reluctor wheel attached to the camshaft. (Note: Gen IV LS engines often moved the sensor to the front timing cover.)

Q4: Is it difficult to replace an LS1 camshaft position sensor?

A: For most DIYers with basic mechanical skills, replacing the LS1 camshaft position sensor is a relatively straightforward job. It usually involves removing the intake manifold (or at least loosening it), disconnecting the electrical connector, unbolting the old sensor, and installing the new one. Always disconnect the battery first and ensure the engine is cool.

Q5: Can I drive my LS1 with a bad camshaft position sensor?

A: While your engine might run with a faulty camshaft position sensor, it’s generally not recommended to drive for long. A bad sensor can lead to significant engine performance issues, decreased fuel efficiency, and potentially cause damage to other engine components due to incorrect timing or misfires. It’s best to replace it as soon as symptoms appear.

Q6: Do I need to reprogram my ECU after replacing the camshaft position sensor?

A: In most cases, for a direct replacement of the LS1 camshaft position sensor, you will not need to reprogram or “relearn” your ECU. Simply clear any stored diagnostic trouble codes using an OBD-II scanner after installation. The ECU will automatically adapt to the new sensor’s signal.

Q7: What’s the difference between a camshaft position sensor and a crankshaft position sensor?

A: Both are vital for engine timing, but they monitor different components. The camshaft position sensor tracks the camshaft’s rotation, which dictates valve timing and cylinder identification. The crankshaft position sensor monitors the crankshaft’s rotation, determining piston position and engine speed. Together, they provide the ECU with precise data for optimal ignition and fuel delivery.

Choosing the right LS1 camshaft position sensor is key to keeping your high-performance engine running like a dream. Whether you opt for an OEM part or a quality aftermarket alternative, replacing a faulty sensor promptly will save you headaches and help maintain your LS engine’s legendary reliability.