10 Best E46 Camshaft Position Sensors: Your Ultimate Buying Guide
Got a beloved BMW E46 that’s starting to act a little… finicky? Maybe it’s idling rough, losing power, or that dreaded “Check Engine” light just popped up. If so, there’s a good chance your e46 camshaft position sensor might be calling it quits. These little guys are absolutely critical for your engine’s performance, telling your car’s computer (the DME) exactly where the camshafts are at any given moment. This precision helps with everything from fuel injection timing to valve control, ensuring your E46 runs smoothly and efficiently.
Replacing a faulty camshaft position sensor is a relatively straightforward job for many DIY enthusiasts, and it can make a world of difference in how your car performs. But with so many options out there, how do you pick the right one? Don’t sweat it! We’ve done the legwork to bring you a comprehensive guide to the 10 best e46 camshaft position sensors on the market, helping you get your Ultimate Driving Machine back to its prime.
Let’s dive in!
Why Your E46 Camshaft Position Sensor Matters
Think of your camshaft position sensor (CPS) as the conductor of an orchestra, specifically in charge of the camshafts. It monitors the rotational speed and position of the camshafts and sends this crucial data to your car’s engine control unit (ECU). The ECU then uses this information to precisely time the fuel injection and ignition, optimizing engine power, fuel economy, and emissions.
When an e46 camshaft position sensor goes bad, your ECU starts getting confused signals, leading to a host of problems. You might experience rough idling, engine misfires, a noticeable drop in power, poor fuel efficiency, or even difficulty starting your car. Ignoring these symptoms can lead to more significant engine issues down the line. That’s why picking a reliable replacement is key!
1. Holstein Parts 2CAM0001 Camshaft Position Sensor
The Holstein Parts 2CAM0001 stands out as a direct OE replacement, aiming to restore your BMW E46 to its factory-level performance without any guesswork. Precision-engineered to duplicate the original equipment’s function, this sensor is designed to ensure smooth, powerful engine operation and maximum fuel economy, making it a solid choice for those seeking reliability and a straightforward swap.
- Direct OE replacement for perfect fit, form, and function.
- Precision-engineered to duplicate OE component function.
- Manufactured with premium materials for long-term performance and heat resistance.
- Includes necessary hardware (grommets, screws) where applicable for proper installation.
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Backed by a Holstein Parts 3-year/36k mile warranty.
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Pros:
- High-quality, durable construction.
- Exact OEM fitment for various BMW models.
- Comes with necessary installation hardware.
- Strong warranty for peace of mind.
- Cons:
- May be slightly pricier than some generic aftermarket options.
- Specific fitment check is crucial.
User Impressions: Many users praise its accurate fit and the noticeable improvement in engine smoothness after installation. The inclusion of hardware is often highlighted as a thoughtful convenience, simplifying the replacement process. Customers appreciate the strong warranty backing the product’s quality.
2. TAMKKEN 12147539165 12141438081 SU5161 Camshaft Position
The TAMKKEN Camshaft Position Sensor offers a cost-effective yet reliable solution for your E46, boasting stable performance and a design that withstands typical road conditions. It’s built to meet OEM standards and specifications, promising an easy, tool-free installation, which is a huge plus for DIYers looking to save time and effort.
- Reference OE Numbers: 12141438081, 12147539165, 12147518628, 12141709616, 5S1220, PC310, SU5161.
- Features stable performance and durable, long-lasting construction.
- Meets OEM standards and specifications.
- Easy to install without requiring special tools.
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Designed to be direct replacements, requiring no calibration or programming.
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Pros:
- Very broad OEM reference compatibility.
- Straightforward plug-and-play installation.
- Good value for the price.
- Claims to eliminate failure light codes.
- Cons:
- Some users might prefer a more established brand name.
- Always double-check fitment with your specific VIN.
User Impressions: Customers often report that this sensor effectively resolves their engine fault codes and performance issues. Its ease of installation is frequently mentioned as a significant benefit, making it popular among those who prefer to do their own car maintenance. It’s generally seen as a reliable, budget-friendly replacement.
3. FainWan 1Set Camshaft Position Sensor Intake and 1 Exhaust
What makes the FainWan set particularly appealing is that it includes both the intake and exhaust camshaft position sensors, offering a comprehensive solution for your E46. If one sensor is failing, often the other isn’t far behind, so replacing both at once can save you future hassle and diagnostic time. Made from high-quality ABS plastic, these sensors are designed for direct replacement and durability.
- Includes both Intake and Exhaust Camshaft Position Sensors.
- Wide compatibility with various BMW E46 and other models.
- Replacement Part Numbers: 12141438082, 12147518628, etc.
- Constructed from high-quality, durable ABS plastic.
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Backed by a 12-Month Warranty.
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Pros:
- Conveniently provides both intake and exhaust sensors.
- Durable ABS plastic construction.
- Direct fit replacement for many models.
- Good warranty coverage.
- Cons:
- Ensure your vehicle uses two separate sensors for intake/exhaust if buying this set.
- Might be overkill if only one sensor is definitively bad.
User Impressions: Buyers appreciate the convenience and value of getting both sensors in one package, often noting a complete resolution of their engine performance issues. The straightforward fitment and decent quality for the price point are common positive remarks.
4. Motoforti Engine Camshaft Position Sensor, Cam Position
The Motoforti Camshaft Position Sensor emphasizes its use of good materials, ensuring long-lasting performance even under the high temperatures of your engine bay. It’s pitched as an exact OE replacement, meaning it’s designed to seamlessly integrate into your BMW E46’s system, bringing its performance back to factory standards without complicated procedures.
- Vehicle-specific fit for a wide range of BMW E46 and related models.
- Manufactured with good materials for durable, long-lasting performance and heat resistance.
- Exact OE replacements providing precise fit, form, and function.
- Direct replace and install without special tools.
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Comes as a set of Camshaft Position Sensors.
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Pros:
- High-quality material selection for durability.
- OE-spec design for reliable performance.
- Easy, tool-free installation.
- Broad compatibility.
- Cons:
- “1 Set Camshaft Position Sensor” can be ambiguous if it means one sensor or an intake/exhaust pair. Clarify before purchase if needed.
- Generic branding might deter some OEM purists.
User Impressions: Users report successful installations and restored engine function, praising the sensor’s ability to clear codes and improve driveability. The “direct replacement” aspect is frequently highlighted, making it a hassle-free upgrade for many.
5. MOSTPLUS Camshaft Position Sensor 12147518628 12147833134
MOSTPLUS offers a camshaft position sensor that boasts extensive compatibility with a wide array of BMW models, not just the E46, covering various engine sizes and years. What really stands out is their claim of 100% testing before shipment and using key parts, including the chip, from top suppliers, which instills confidence in its quality and reliability.
- Extensive fitment with numerous BMW 3, 5, X, and Z series models.
- Multiple OEM Part Number cross-references for broad compatibility.
- Stock parts direct replacement.
- 100% tested before shipment.
- Key components, including the chip, sourced from top suppliers.
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3 Terminal connection for secure fit.
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Pros:
- Rigorous testing process for quality assurance.
- Uses high-quality internal components.
- Very broad vehicle compatibility listed.
- Direct replacement design.
- Cons:
- Detailed fitment verification against OE part numbers is essential.
- May be perceived as a budget-oriented brand by some.
User Impressions: Many customers find this sensor to be a reliable and affordable fix for their BMW’s CPS issues. The detailed fitment list is helpful, and users often report a seamless installation and immediate resolution of check engine lights and performance problems.
6. CKP CMP Camshaft Position Sensor Crankshaft Position Sensor
While the title mentions both camshaft and crankshaft position sensors, this product focuses on providing a reliable camshaft sensor with a strong emphasis on part number verification and customer satisfaction. MUNIK, the brand behind this, highlights rigorous testing before leaving the warehouse and offers a 12-month return policy, assuring product quality and reliability for your E46.
- Compatible with key OEM part numbers: 12147518628, 12147539165, 12141709616.
- Products tested before leaving the warehouse to ensure quality and reliability.
- 12-month return policy for customer satisfaction.
- Easy to install for DIY enthusiasts.
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Provides a free return guarantee.
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Pros:
- Strong focus on quality testing.
- Generous 12-month return/warranty period.
- Designed for easy self-installation.
- Good customer support emphasized.
- Cons:
- Product title can be slightly misleading (implies a set of both cam and crank, but features focus on cam PNs).
- Requires careful part number checking.
User Impressions: Buyers appreciate the straightforward installation and the effectiveness of the sensor in resolving their vehicle’s issues. The 12-month return guarantee provides significant peace of mind, making it a less risky purchase for those trying an aftermarket option.
7. MUNIK 12147518628 Camshaft Position Sensor Crankshaft
Another offering from MUNIK, this product is also marketed with a focus on comprehensive part number compatibility and the brand’s commitment to quality. Like its counterpart, it undergoes thorough testing before shipment and comes with a 12-month warranty, ensuring that you’re getting a reliable component for your E46 that you can install with confidence.
- Broad compatibility with numerous OEM replacement numbers.
- Products rigorously tested before leaving the warehouse.
- 12-month return/warranty policy for customer peace of mind.
- Designed for easy, self-installation.
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Free return guarantee.
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Pros:
- Extensive cross-referencing for various OEM part numbers.
- Guaranteed quality control and testing.
- Solid 12-month warranty/return policy.
- User-friendly for DIY installation.
- Cons:
- Similar ambiguity in title regarding “Crankshaft” sensor – focus is on the Camshaft sensor.
- Essential to verify compatibility by part number.
User Impressions: Customers report positive outcomes, citing the sensor’s ability to accurately restore engine function and eliminate troublesome diagnostic codes. The ease of installation, combined with the reassuring warranty, makes it a favored choice among those looking for an affordable and reliable aftermarket solution.
8. SCITOO CAM Camshaft Position Sensor Fits 12147518628
The SCITOO Camshaft Position Sensor not only provides wide compatibility with many BMW models, including the E46, but also clearly outlines the common symptoms a failing sensor can cause, helping you diagnose your issue with confidence. What makes it stand out is its emphasis on performance, claiming to feed precise data to the ECU for faster start-up times and quick response during acceleration, enhancing overall driving comfort and fuel efficiency.
- Extensive compatibility list for various BMW models (E46 included).
- Helps resolve symptoms like rough idle, stalling, reduced power, and poor gas mileage.
- Enhances engine performance with faster start-up and quick acceleration response.
- Maximizes fuel energy use and improves fuel efficiency.
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Easy to install, allowing for DIY replacement.
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Pros:
- Clearly addresses common symptoms and offers a solution.
- Focuses on performance benefits like faster start-up and acceleration.
- Simple DIY installation.
- Broad vehicle fitment.
- Cons:
- Verify your specific E46 model and engine type with the provided fitment.
- Aftermarket branding may not appeal to those seeking strictly OEM.
User Impressions: Many users praise this sensor for its immediate effectiveness in resolving their E46’s engine issues, particularly noting improvements in idle stability and acceleration. Its easy installation process is frequently highlighted as a major benefit, making it accessible even for those with limited mechanical experience.
9. MOCA 907-737 Intake Camshaft Position Sensor Fit 2001-2006
MOCA offers an intake camshaft position sensor that’s meticulously inspected and validated to meet strict quality standards, promising a long lifespan for your BMW E46. Beyond its robust construction, MOCA distinguishes itself with a US local professional friendly after-sales team and a 1-year unlimited mileage guarantee, offering excellent support and confidence in your purchase.
- Components are closely inspected and validated for strict quality standards.
- Package includes 1 Camshaft Position Sensor (Intake).
- Compatible with various OEM part numbers (PC310, 12141438081, etc.).
- Helps address common symptoms of a bad sensor (engine light, vibrations, misfires).
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Backed by a 1-year unlimited mileage guarantee and US local after-sales support.
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Pros:
- High-quality components and strict validation process.
- Excellent 1-year unlimited mileage warranty.
- Dedicated US local after-sales team.
- Clearly identified as an intake sensor.
- Cons:
- Only covers the intake side, so if exhaust also needs replacement, you’ll need another part.
- Compatibility check is crucial.
User Impressions: Customers often highlight the peace of mind provided by MOCA’s strong warranty and responsive customer service. Many report that the sensor effectively resolves their engine issues, and its quality feels substantial for an aftermarket part.
10. Mteycei Engine Camshaft Position Sensor Cam Compatible with
The Mteycei Engine Camshaft Position Sensor is designed as a perfect fit for a wide range of BMW E46 models and other vehicles, ensuring broad compatibility. Made from high-quality, durable materials, this sensor undergoes rigorous testing by their QA department, meeting or exceeding OEM quality standards. It clearly outlines the symptoms it aims to fix, making it easy for you to confirm if it’s the right solution for your BMW’s woes.
- Broad compatibility with various BMW E46 models (320i, 323i, 325i, 328i, 330i, X3, X5, Z3, Z4, etc.).
- Made from high-quality, durable materials.
- Tested by QA department to meet or exceed OEM quality.
- Addresses symptoms like irregular stalling, difficult starting, engine vibrations, and accelerator hesitation.
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Direct replacement part number cross-references.
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Pros:
- Wide range of E46 models covered.
- High-quality construction for durability.
- Rigorous testing process.
- Clearly stated function to solve common issues.
- Cons:
- Requires careful verification of your specific car details.
- Generic brand name may not be familiar to all.
User Impressions: Users frequently commend this sensor for its precise fit and effectiveness in eliminating pesky engine issues and diagnostic codes. Its robust construction and claim of meeting OEM standards resonate well with buyers looking for a reliable, long-lasting replacement without breaking the bank.
FAQ Section
Q1: What does an E46 camshaft position sensor do?
A: The camshaft position sensor (CPS) monitors the precise rotational speed and position of the camshafts. This information is crucial for the engine control unit (ECU) to accurately time fuel injection, ignition, and variable valve timing (VANOS system), ensuring optimal engine performance, fuel efficiency, and emissions.
Q2: What are the common symptoms of a failing E46 camshaft position sensor?
A: Common symptoms include a “Check Engine” light illuminated on your dashboard, rough idling, engine misfires, stalling, difficulty starting the vehicle (especially when warm), a noticeable loss of power, reduced fuel economy, and sometimes erratic acceleration or hesitation.
Q3: Can I replace the camshaft position sensor on my E46 myself?
A: Yes, for most E46 models, replacing the camshaft position sensor is a relatively straightforward DIY job. It typically involves basic hand tools and can be done by someone with moderate mechanical experience. Always ensure the engine is cool, disconnect the battery, and follow a reliable repair guide or video tutorial.
Q4: How many camshaft position sensors does an E46 typically have?
A: Most BMW E46 models, particularly those with the M52TU, M54, and M56 engines, have two camshaft position sensors: one for the intake camshaft and one for the exhaust camshaft. They are often located on the front or side of the cylinder head.
Q5: Is there a difference between intake and exhaust camshaft position sensors for an E46?
A: Yes, there is often a difference. While both perform the same basic function, the intake and exhaust camshaft position sensors typically have different part numbers, shapes, and wire harness connections due to their specific locations and roles in monitoring each camshaft. It’s crucial to ensure you’re buying the correct sensor for the specific camshaft you’re replacing.
Q6: Will a faulty camshaft position sensor always trigger a Check Engine Light?
A: Most of the time, yes. A faulty camshaft position sensor will usually trigger the “Check Engine” light and store a diagnostic trouble code (DTC) in the ECU. However, sometimes the light might be intermittent, or the car might just perform poorly without an immediate light, only storing a “pending” code.
Q7: How long do E46 camshaft position sensors usually last?
A: The lifespan of an E46 camshaft position sensor can vary greatly depending on driving conditions, maintenance, and the quality of the original part. On average, they can last anywhere from 70,000 to 150,000 miles or more. However, some can fail prematurely.
Q8: What should I consider when buying a replacement E46 camshaft position sensor?
A: When buying a replacement, consider the following:
* Compatibility: Double-check the part number against your vehicle’s original sensor or VIN.
* OEM vs. Aftermarket: OEM (Original Equipment Manufacturer) parts offer guaranteed fit and quality but are more expensive. High-quality aftermarket options can provide good value.
* Reviews: Look at user reviews for reliability and ease of installation.
* Warranty: A good warranty can provide peace of mind.
* Intake or Exhaust: Ensure you’re purchasing the correct sensor for the camshaft you need to replace.
Get Your E46 Running Smoothly Again!
A healthy e46 camshaft position sensor is absolutely vital for your BMW’s optimal performance. Don’t let a faulty sensor leave your E46 feeling sluggish or unreliable. With the fantastic options reviewed above, you’re now equipped to make an informed decision and find the perfect replacement to get your car back in top shape.
Remember to always double-check the part numbers and compatibility for your specific E46 model before making a purchase. Happy driving!
