Description
Product Overview
The gtpartes Four Pole Cam Gear is engineered for GM LS series engines ranging from 4.8L to 6.0L. Constructed from high‑quality steel, the gear provides stable performance and long‑term durability. It matches the original part number 12586481 and fits 2006‑2015 GM LS models with a 3‑bolt, 4‑pole configuration. Dimensions are compact at 5.25 x 5.25 x 0.5 inches, weighing just 1.1 pounds, making handling and installation effortless.
Usage
Designed for both professional workshops and home garages, this cam gear is perfect for engine rebuilds, timing chain conversions, and performance upgrades. It excels in high‑temperature environments and under demanding driving conditions, ensuring consistent timing and reduced wear. Target users include automotive technicians, performance enthusiasts, and DIY mechanics working on LS2, LS3, LS7 and similar engines.

Why Choose Us
gtpartes combines rigorous factory testing with premium material selection to deliver a cam gear that meets OEM specifications. Our product undergoes heat treatment and precision machining, guaranteeing exact tooth geometry and minimal backlash. We stand behind the gear with responsive customer service, offering technical support and hassle‑free returns.
Key Features
- High‑quality steel construction for superior strength and wear resistance
- Exact OEM fit – replaces part 12586481 without modifications
- Four‑pole, 3‑bolt design compatible with 4.8‑6.0L LS engines
- Easy direct installation saves time and labor costs
- Improves engine start reliability and overall timing efficiency
FAQ
Is this cam gear compatible with LS7 engines?
Yes, the gear fits LS7 as it shares the same 4‑pole, 3‑bolt configuration used in LS2, LS3 and other LS variants.
Do I need special tools to install the gear?
No special tools are required beyond standard timing chain tools; the gear bolts directly onto the existing crankcase flange.
Can I use this gear for a 1‑bolt to 3‑bolt conversion?
This gear is intended for the 3‑bolt setup. For a 1‑bolt conversion, a different part number is required.
What is the warranty period?
gtpartes offers a one‑year limited warranty covering manufacturing defects.
How does this gear improve starting performance?
By providing precise tooth engagement, the gear reduces timing lag, which helps the engine start more smoothly, especially in cold conditions.





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