10 Top 2003 Infiniti G35 Camshaft Position Sensor Options: Your Buying Guide
If you own a classic 2003 Infiniti G35, you know it’s a car that still turns heads and offers a fantastic driving experience. But even the most beloved vehicles need a little TLC, and sometimes, a small but mighty component can throw a wrench in your engine’s performance: the camshaft position sensor. This tiny guardian plays a crucial role in your car’s brain, the Engine Control Unit (ECU), helping it understand exactly where your camshafts are at any given moment. Without accurate signals from this sensor, your G35’s VQ35DE engine might struggle.
Are you experiencing a “Check Engine” light, rough idling, or a surprising loss of power? There’s a good chance a faulty 2003 Infiniti G35 camshaft position sensor could be the culprit. Don’t sweat it, though! Replacing these sensors is a common maintenance task, and we’re here to help you navigate the sea of options.
In this comprehensive guide, we’ll dive deep into 10 top-rated camshaft position sensors that are perfect for your 2003 Infiniti G35. We’ll break down what makes each one stand out, highlight their key features, and give you the lowdown on what real users are saying. By the end, you’ll be well-equipped to pick the perfect replacement and get your G35 running smoothly again.
Why Your 2003 Infiniti G35 Needs a Reliable Camshaft Position Sensor
Think of your engine’s camshafts as the conductors of an orchestra, opening and closing the valves at just the right time. The camshaft position sensor is like the conductor’s stopwatch, precisely timing these movements. It sends crucial signals to your car’s ECU, which then uses this information to manage fuel injection, ignition timing, and valve timing.
When this sensor goes bad, your ECU essentially loses its timing cues. This can lead to a whole host of frustrating symptoms, including:
- Illuminated Check Engine Light (CEL): This is often the first sign, sometimes accompanied by specific diagnostic trouble codes (DTCs) like P0340 (camshaft position sensor “A” circuit malfunction) or P0345 (camshaft position sensor “B” circuit malfunction).
- Hard Starting or No-Start Condition: The engine might crank but won’t catch, especially when warm.
- Rough Idling or Stalling: Your engine could feel shaky or unpredictably shut off.
- Reduced Engine Power and Acceleration: You might notice a significant drop in your G35’s get-up-and-go.
- Increased Fuel Consumption: An inefficient engine will drink more gas.
- Engine Misfires: The engine might run unevenly.
Given its vital role, investing in a high-quality replacement is key to maintaining your G35’s legendary performance and ensuring you hit the road with peace of mind.
How We Chose the Best Sensors
To bring you this list, we focused on several critical factors:
- Precise Fitment: Ensuring the sensors are a direct match for the 2003 Infiniti G35 V6 3.5L engine.
- Reliability & Durability: Looking for sensors made with quality materials that promise longevity.
- Ease of Installation: Prioritizing plug-and-play options that make DIY replacement simpler.
- Value for Money: Balancing cost with performance and warranty.
- User Feedback: Analyzing customer reviews for real-world performance insights.
Now, let’s get down to brass tacks and check out the top picks!
10 Top 2003 Infiniti G35 Camshaft Position Sensor Options
1. A-Premium Camshaft Crankshaft Position Sensor Compatible…
This A-Premium set offers a comprehensive solution for your Nissan/Infiniti VQ35DE engine, bundling two camshaft position sensors (Bank 1 & Bank 2) and a crankshaft position sensor. It’s a fantastic value if you’re looking to replace all three critical timing sensors at once, ensuring your engine’s timing is perfectly synchronized.
– Key Features:
– Compatible with Infiniti G35 2003-2007 V6 3.5L, among other Nissan/Infiniti models.
– Includes 2 Camshaft Position Sensors (Bank 1 & 2) and 1 Crankshaft Position Sensor.
– Direct replacement for various OEM part numbers, including 237315M010, 23731AL610, 237318J100.
– 3-pin blade terminal design for precise connection.
– Backed by a one-year unlimited-mileage guarantee.
– Pros:
– Excellent value for a complete sensor replacement kit (camshafts and crankshaft).
– Wide vehicle compatibility ensures broad applicability.
– Direct fit design for straightforward installation.
– Comes with a warranty for added buyer confidence.
– Cons:
– Some users might only need specific sensors, making the full kit more than necessary.
– Aftermarket quality may vary compared to OEM, though A-Premium has a good reputation.
– User Impressions: Many users praise this kit for its comprehensive nature and value, often reporting that replacing all three sensors solved multiple engine codes and rough running issues. They appreciate the direct fit and ease of installation, making it a popular DIY choice.
See it on Amazon here
2. A-Premium Camshaft Position Sensor Left & Right -…
If your G35 only needs its camshaft position sensors, this A-Premium two-pack is tailor-made for you. It provides both the Bank 1 (right) and Bank 2 (left) sensors, which are the most common ones to fail, giving your engine’s valve timing the precision it needs without the extra crankshaft sensor if you don’t need it.
– Key Features:
– Includes two camshaft position sensors (left and right/Bank 1 & 2).
– Broad compatibility with Infiniti G35 2003-2007 V6 3.5L and many other V6 Nissan/Infiniti models.
– Direct OEM replacement for part numbers like 237315M010 and 23731AL610.
– Features a 3-pin blade terminal and black color, matching original specifications.
– Supported by A-Premium’s one-year unlimited-mileage guarantee.
– Pros:
– Cost-effective solution for replacing both camshaft sensors.
– High compatibility across various Nissan/Infiniti V6 models.
– Promises direct fit and plug-and-play installation.
– Reputable brand with a decent warranty.
– Cons:
– Does not include the crankshaft sensor, so if that’s also an issue, you’d need to buy it separately.
– Like all aftermarket parts, individual unit performance can vary slightly.
– User Impressions: Customers frequently commend this set for resolving P0340 and P0345 codes, praising its effectiveness and ease of replacement. The value of getting both sensors in one package is a big plus for G35 owners tackling these common issues.
See it on Amazon here
3. Zhermik Camshaft Crankshaft Position Sensor Left and Right…
The Zhermik bundle is another excellent option for those who want to replace all three vital sensors – both camshafts and the crankshaft sensor – in one go. It’s designed to provide precise timing information to your ECU, helping to restore smooth operation and prevent common engine fault codes in your 2003 Infiniti G35.
– Key Features:
– Full set including Left (Bank 2) and Right (Bank 1) camshaft sensors, plus the crankshaft sensor.
– Fits Nissan 350Z, Altima, Maxima, Murano, Quest, and Infiniti FX35, G35, I35, M35 3.5L V6 models.
– Replaces various OEM part numbers for comprehensive compatibility.
– Comes with a 12-month warranty.
– Pros:
– Convenient all-in-one kit for timing sensor replacement.
– Good coverage for common Nissan/Infiniti V6 3.5L applications.
– Direct replacement design simplifies installation.
– Offers a standard 12-month warranty.
– Cons:
– Warranty period is standard, but some brands offer longer.
– Brand might be less known than some competitors, potentially raising questions about long-term reliability for some users.
– User Impressions: Reviewers often highlight the convenience and affordability of getting all three sensors together. Many report that the sensors resolved their specific engine codes (P0340, P0345, P0335) and restored proper engine function, making it a popular choice for complete timing system overhauls.
See it on Amazon here
4. 2Pcs Camshaft Position Sensor Compatible with Infiniti FX35…
This 2-piece camshaft position sensor set is a strong contender for your 2003 Infiniti G35 if you’re solely focused on the camshaft sensors. The product description emphasizes its function in providing accurate signals for engine timing and details the symptoms of a failing sensor, making it clear this is the right part to fix your engine woes.
– Key Features:
– Two camshaft position sensors included, compatible with 2003-2007 Infiniti G35 3.5L.
– Also fits a wide array of Nissan and Infiniti 3.5L and 4.0L V6 engines.
– Direct OEM cross-reference for Bank 1 (right) and Bank 2 (left) sensors.
– Clearly outlines the function of the sensor and symptoms of failure.
– Designed for easy, plug-and-play installation.
– Pros:
– Addresses the common need for both camshaft sensors.
– High compatibility with many popular V6 Nissan/Infiniti models.
– Straightforward installation process for DIYers.
– Detailed function description helps users understand the part’s role.
– Cons:
– Warranty information is not explicitly detailed beyond “dedicated customer support team.”
– No crankshaft sensor included if a complete overhaul is desired.
– User Impressions: Customers appreciate the clear compatibility list and the fact that these sensors often solve the nagging Check Engine Light issues and rough idle. The ease of installation is frequently mentioned, making it a go-to for those looking for a quick and effective fix for their camshaft sensor problems.
See it on Amazon here
5. SZKAIDAG Camshaft Position Sensor 23731AL61A 237316J90B…
SZKAIDAG brings a pair of high-precision camshaft position sensors designed for reliable performance in your 2003 Infiniti G35. With a focus on high-quality materials and rigorous testing, this set aims to provide accurate camshaft monitoring, ensuring your engine runs efficiently and avoids common fault codes.
– Key Features:
– Includes two camshaft position sensors for Bank 1 and Bank 2.
– Wide fitment for Infiniti G35 2003-2007 3.5L and various Nissan VQ35/V6 4.0L models.
– Direct OEM replacement part numbers (23731AL61A, 237316J90B, etc.).
– Emphasizes high precision, easy installation, and efficient, long-lasting performance.
– Claims 100% strict quality control and 30 years of automotive experience from the manufacturer.
– Pros:
– Focus on high precision and strict quality control suggests good reliability.
– Designed for easy, plug-in installation without complex tools.
– Aims for long-life design with durable materials.
– Comprehensive fitment list covers many relevant vehicles.
– Cons:
– No specific warranty period is mentioned in the features, only “long-life design.”
– Brand might be less familiar to some consumers.
– User Impressions: Many users find these sensors to be a solid replacement, often reporting that they clear engine codes and restore engine smoothness. The emphasis on quality control provides some reassurance, though some buyers might prefer a clearly stated warranty period.
See it on Amazon here
6. Zhermik Camshaft Position Sensor Left and Right Compatible…
This Zhermik two-pack specifically targets the camshaft position sensors for your 2003 Infiniti G35, offering a straightforward replacement solution. If you’ve diagnosed only the cam sensors as problematic, this set provides both the left and right sensors, ensuring complete coverage for your engine’s precise timing needs.
– Key Features:
– Contains Left (Bank 2) and Right (Bank 1) camshaft position sensors.
– Compatible with Infiniti G35 2003-2007 V6 3.5L, alongside a wide range of Nissan and Infiniti V6 models.
– Direct replacement for common OEM and aftermarket part numbers like 907-716 and 917-704.
– Backed by a 12-month warranty and responsive customer support.
– Pros:
– Provides both critical camshaft sensors in one package.
– Extensive vehicle compatibility for broad application.
– Direct fit ensures easy installation for DIYers.
– Offers a standard 12-month warranty.
– Cons:
– Excludes the crankshaft sensor, which some might need to replace concurrently.
– Packaging type is not specified, which could impact perceived quality.
– User Impressions: Users often find this Zhermik set to be an effective and affordable fix for common cam sensor-related issues. The inclusion of both sensors is a plus, and customers generally appreciate the straightforward installation and the responsiveness of the customer service for any queries.
See it on Amazon here
7. Set of 2 Engine Camshaft Position Sensor Compatible with…
This set of two engine camshaft position sensors is specifically highlighted for its compatibility with the 2003 Infiniti G35, making it an ideal direct replacement. Constructed with precise engineering and durable materials, it promises reliable functionality and aims to restore your engine’s optimal performance and timing.
– Key Features:
– Includes two camshaft position sensors for your V6 3.5L G35.
– Broad vehicle fitment extending to other Infiniti and Nissan V6 3.5L/4.0L models.
– Cross-references to various OEM numbers for both Bank 1 and Bank 2 sensors.
– Emphasizes high-quality construction and direct replacement design.
– Comes with an 18-month worry-free warranty.
– Pros:
– Comprehensive 2-piece set addresses both camshaft sensor needs.
– Strong compatibility with the target vehicle and many others.
– Durable construction materials promise long-lasting performance.
– Excellent 18-month warranty offers extended peace of mind.
– Cons:
– Does not include the crankshaft sensor, if that’s a part of your diagnostic needs.
– “A-NAFTULY store” is mentioned, indicating a seller-specific warranty, which might need clarification.
– User Impressions: Many customers commend these sensors for their easy plug-in installation and effective resolution of check engine lights and performance issues. The longer 18-month warranty is a definite plus for buyers seeking extended assurance for their automotive parts.
See it on Amazon here
8. 3Pcs Camshaft Crankshaft Position Sensor Compatible with…
This 3-piece kit is a robust solution for your 2003 Infiniti G35’s engine timing system, including both camshaft sensors and the crankshaft position sensor. It’s designed to rectify a range of issues from hard starting to erratic acceleration, providing a comprehensive replacement for optimal engine operation.
– Key Features:
– A complete set of 2 camshaft sensors (Bank 1 & 2) and 1 crankshaft sensor.
– Extensive compatibility with 2003-2007 Infiniti G35 3.5L and numerous Nissan V6 models.
– Direct OEM cross-reference for all three sensors.
– Clearly details the function of the sensors and symptoms of failure.
– Designed for easy, plug-and-play installation.
– Pros:
– All-in-one package for a complete timing sensor overhaul.
– Addresses multiple potential failure points (cam and crank sensors).
– User-friendly plug-and-play installation.
– Wide compatibility makes it versatile for many vehicles.
– Cons:
– Warranty details are not explicitly mentioned in the provided features.
– Some users might not need all three sensors, making it a larger investment.
– User Impressions: Customers often find this kit to be a convenient and effective solution for resolving various engine codes, particularly when both cam and crank sensors are suspected. The comprehensive nature of the kit saves time and hassle, making it a favored choice for full timing sensor replacements.
See it on Amazon here
9. Set of 3 Camshaft Crankshaft Position Sensor Compatible…
This 3-piece set offers a complete overhaul for your 2003 Infiniti G35’s timing sensors, including both camshaft and the crucial crankshaft position sensor. It’s designed to directly replace original parts, ensuring your engine gets accurate data for spark timing and fuel injection, thereby resolving issues like stalling or misfires.
– Key Features:
– Comprehensive kit with 2 camshaft sensors (Bank 1 & 2) and 1 crankshaft sensor.
– Compatible with Infiniti G35 2003-2007 3.5L, plus a wide range of Nissan and Suzuki V6 models.
– Provides direct OEM cross-reference for all three included sensors.
– Explains sensor function and symptoms of failure to guide users.
– Offers an 18-month worry-free warranty.
– Pros:
– Provides a full set for total timing sensor replacement, covering all common failure points.
– High compatibility with many popular V6 vehicles.
– Detailed function explanation helps inform the buyer.
– Backed by a generous 18-month warranty for peace of mind.
– Cons:
– Similar to other full kits, it might be more than needed for those only replacing camshaft sensors.
– “A-NAFTULY store” mentioned as the warranty provider, which could be a specific seller.
– User Impressions: Reviewers often praise the completeness of this kit, highlighting how it effectively resolved multiple engine codes and restored smooth engine operation. The extended warranty is a significant draw, offering long-term confidence in the purchase.
See it on Amazon here
10. AUTO OCCASION Crankshaft Position Sensor Camshaft Sensor…
The AUTO OCCASION kit provides a critical trio of sensors – both camshafts and the crankshaft position sensor – engineered for your 2003 Infiniti G35. This set is particularly helpful as it lists common error codes (like P0340, P0345, P0341, etc.) that these sensors address, making it easy for you to confirm it’s the right solution for your diagnostic trouble codes.
– Key Features:
– Full kit including 2 camshaft sensors (Bank 1 & 2) and 1 crankshaft sensor.
– Compatible with Infiniti G35 2003-2007 V6 3.5L and several Nissan V6 3.5L models.
– Comprehensive list of common error codes (P0340-P0349) associated with sensor failure.
– Claims strict quality control and high compatibility, with OE standard matching plugs.
– Easy plug-and-play installation for instant response.
– Pros:
– Comprehensive kit addressing both camshaft and crankshaft sensors.
– Very useful inclusion of common error codes for diagnosis.
– Emphasizes strict quality control and OE matching for reliable fitment.
– Designed for easy, quick installation.
– Cons:
– No specific warranty period is mentioned in the features.
– Might be an overkill if only one camshaft sensor is faulty.
– User Impressions: Customers appreciate the clear error code reference, which helps them confirm their diagnostic findings. Many find the sensors to be a direct fit and effective in clearing codes and restoring engine performance, praising the straightforward installation process.
See it on Amazon here
Buying Guide: What to Look for in a 2003 Infiniti G35 Camshaft Position Sensor
Choosing the right 2003 Infiniti G35 camshaft position sensor (or set of sensors) can feel a bit overwhelming, but keeping these pointers in mind will help you make a smart decision:
- Exact Fitment: This is paramount. Always double-check that the sensor specifically lists compatibility with your 2003 Infiniti G35 3.5L V6. Look for specific years and engine codes (like VQ35DE). Many sensors also fit other Nissan/Infiniti models, which is fine, but confirm your G35 is on the list.
- OEM Part Numbers: Compare the OEM (Original Equipment Manufacturer) part numbers listed by the seller with your car’s original sensor part number if possible. This is the surest way to guarantee compatibility.
- Sensor Type (Camshaft vs. Crankshaft): Your G35 has two camshaft position sensors (one for Bank 1, one for Bank 2) and one crankshaft position sensor. Make sure you’re buying the correct type and quantity for what you need. Often, it’s beneficial to replace both camshaft sensors together if one fails, or even all three timing sensors (camshafts + crankshaft) for a complete refresh.
- Quality and Durability: Look for sensors made from high-quality, durable materials that can withstand engine heat and vibrations. While aftermarket parts can be great value, ensure they meet or exceed OEM specifications for reliability.
- Ease of Installation (Plug-and-Play): Most aftermarket sensors are designed for direct replacement and plug-and-play installation. This makes it much easier for DIYers, as no complex wiring or modifications are needed.
- Warranty: A good warranty (12 months, 18 months, or even a year unlimited mileage) indicates the manufacturer’s confidence in their product. This can save you headaches and money down the line if the part turns out to be defective.
- User Reviews: Don’t skip this step! Real-world feedback from other G35 owners can provide invaluable insights into a product’s performance, longevity, and ease of installation.
Installation Tips (for the DIY Enthusiast)
Replacing a 2003 Infiniti G35 camshaft position sensor is a manageable DIY task for many, but always prioritize safety:
- Disconnect the Battery: Always disconnect the negative battery terminal before starting any electrical work on your car.
- Locate the Sensors:
- Bank 1 Camshaft Sensor: Located on the passenger side (right side) of the engine, near the top, often visible under the engine cover.
- Bank 2 Camshaft Sensor: Located on the driver’s side (left side) of the engine, also near the top.
- Crankshaft Position Sensor: Typically located on the lower part of the engine, often near the transmission bell housing. It can be harder to access.
- Tools: You’ll usually need a 10mm or 12mm socket wrench, possibly an extension, and a flathead screwdriver to help unclip the electrical connector.
- Careful Removal & Installation: Be gentle when disconnecting electrical connectors, as older plastic can be brittle. Ensure the new sensor seats properly and the O-ring (if present) is intact for a good seal.
- Clear Codes: After installation, reconnect the battery. You may need to clear the Check Engine Light codes using an OBD-II scanner. If the problem is resolved, the codes shouldn’t return.
Frequently Asked Questions (FAQ)
Q1: What are the common symptoms of a bad 2003 Infiniti G35 camshaft position sensor?
A1: Common symptoms include an illuminated Check Engine Light (often with codes like P0340, P0345), hard starting (especially when warm), rough idling, engine stalling, reduced engine power, poor acceleration, and increased fuel consumption.
Q2: How many camshaft position sensors does a 2003 Infiniti G35 have?
A2: Your 2003 Infiniti G35 has two camshaft position sensors: one for Bank 1 (passenger side/right) and one for Bank 2 (driver’s side/left). It also has a separate crankshaft position sensor.
Q3: Can I drive my G35 with a bad camshaft position sensor?
A3: While you might be able to drive it, it’s not recommended. A faulty sensor can cause unpredictable engine performance, stalling, and potentially lead to damage to other engine components over time due to incorrect timing. It’s best to replace it as soon as possible.
Q4: Is it difficult to replace a 2003 Infiniti G35 camshaft position sensor myself?
A4: For many DIYers, replacing the camshaft position sensors is a relatively straightforward job, often requiring basic hand tools and about 30 minutes to an hour per sensor. The crankshaft position sensor can be a bit more challenging due to its location. Always consult your service manual or online tutorials.
Q5: What’s the difference between a camshaft position sensor and a crankshaft position sensor?
A5: Both are crucial for engine timing. The camshaft position sensor monitors the position of the camshafts (which control valve opening/closing), while the crankshaft position sensor monitors the rotational speed and position of the crankshaft (which controls piston movement). The ECU uses data from both to precisely time fuel injection and spark.
Q6: Do I need to replace both camshaft sensors if only one is bad?
A6: It’s often recommended to replace both camshaft sensors at the same time if one fails, as they’re typically the same age and may fail around the same time. This can save you from having to do the job twice. However, it’s not strictly necessary if only one is clearly faulty.
Q7: Will replacing the camshaft position sensor clear my Check Engine Light?
A7: Yes, if a faulty camshaft position sensor was the cause of your Check Engine Light (and associated codes like P0340 or P0345), replacing it and then clearing the codes with an OBD-II scanner should turn off the light. If the underlying issue isn’t resolved, the light will reappear.
Q8: Are aftermarket camshaft position sensors reliable?
A8: Many aftermarket camshaft position sensors are reliable and offer excellent value, often performing comparably to OEM parts. However, quality can vary, so it’s essential to choose reputable brands with good reviews and warranties, like those highlighted in our list.
Final Thoughts
A well-functioning 2003 Infiniti G35 camshaft position sensor is essential for your car’s smooth operation and overall engine health. Don’t let a failing sensor leave you stranded or compromise your driving experience. With the comprehensive options reviewed above, you’ve got a fantastic starting point for finding the perfect replacement.
Remember to double-check compatibility, read user reviews, and consider whether you need just the camshaft sensors or a full set including the crankshaft sensor. Take the plunge, replace that faulty sensor, and get your beloved 2003 Infiniti G35 back to its roaring best!
