Honestly, when a check engine light pops up and the car starts acting a little âoff,â itâs usually not the fun kind of surprise.
This Camshaft Position Sensor (CMP) is made to be a direct replacement for compatible GM applications, so you can get back to smoother starts and more predictable running.
Targets common CMP faults
OE number matched
What this Camshaft Position Sensor does
This CMP sensor is designed to match specific OE numbers (including 12561211, 8125612110, 19420372, 19420911, PC273, and 213-363) and is intended for direct installation without extra modification.
If youâre dealing with symptoms commonly associated with a defective CMP sensorâlike hard starting, failure to start, rough idle, engine misfire, weak acceleration, or a check engine light with OBD fault codes P0340 / P0341âthis is the kind of replacement part people look for.
Biggest appeal: itâs built around OE matching and a sealed design, so itâs meant to hold up in the harsh engine-bay environment.
Real-world vibe: if your truck/SUV is throwing CMP-related codes, having the right replacement sensor can be a practical next step.
Key Features
- Direct replacement / OE matching: 12561211, 8125612110, 19420372, 19420911, PC273, and 213-363.
- Consistent fit and function: intended for plug-and-play installation with no extra modification.
- Common CMP-related symptoms: hard starting, failure to start, rough idle, engine misfire, weak acceleration, and check engine light with P0340 / P0341.
- Engine-bay durability: high temperature-stable plastic housing, strengthened internal circuit, and a premium sealed O-ring.
- Application focus: compatible with GM Gen III LS engines listed for 4.8L, 5.3L, 5.7L (LS1), and 6.0L.
- Fitment reminder: check the fitment information carefully before ordering.
Why This Product Exists
At some point, most people who wrench on GM vehicles run into the same annoying pattern: a CMP sensor goes bad, codes show up, and the engine starts behaving like itâs having a bad day.
This sensor exists to give you an OE-matched replacement option thatâs intended to restore normal sensor behavior and help address those CMP fault scenarios.
Best Fit For
This is best viewed as a practical replacement part for people who:
- Need a CMP sensor replacement for compatible GM Gen III LS applications.
- Are seeing CMP-related OBD codes such as P0340 or P0341 and are investigating the sensor as part of the fix.
- Prefer a direct replacement approach (matching OE numbers) instead of guessing and improvising.
- Want a sensor designed for high-temperature engine-bay conditions with a sealed O-ring.
Quick note: always verify your OEM part number and engine specs so you donât end up with a sensor that fits the wrong application.
Required Disclaimers
Affiliate Disclosure: This post contains an affiliate link to Amazon. If you purchase through that link, I may earn a small commission at no extra cost to you.
AI Image Disclaimer: This article does not include any images.
AI Content Disclaimer: This content was generated using AI and reviewed for clarity and compliance. Always verify details with the product listing and your vehicleâs requirements.
Electrical/Battery Disclaimer: Vehicle sensors are part of the electrical system. Follow safe handling practices and consult a qualified mechanic if youâre unsure about diagnosis, wiring, or installation.
Tool Safety Disclaimer: If you plan to install or inspect parts yourself, use proper tools, wear eye protection, and ensure the vehicle is safely supported before working underneath or near moving components.
Cooling Performance Disclaimer: Engine performance issues can be caused by multiple factors, including cooling system problems. A sensor replacement may help if itâs the root cause, but it may not resolve issues caused by other components.
Privacy/Surveillance Disclaimer: If you use an OBD scanner or related tools, be mindful of what data you collect and how you store or share it.