I recently replaced the small timing chain guide on my G37 using an OEM unit from Z1 Motorsports, and overall I’m very satisfied with both the part and the buying experience.
The guide itself is exactly what you want for a critical internal engine component—OEM quality, solid construction, and a precise fit. Installation was straightforward, and it lined up perfectly with no issues. When working on something as involved as a timing job, having parts that fit correctly the first time makes a huge difference.
Even though it’s a small component, it plays an important role in maintaining proper chain alignment and preventing long-term wear. It’s not something you want to cut corners on, and going OEM through Z1 gives peace of mind knowing it’s built to factory specs.
Z1 Motorsports also delivered as expected—fast shipping, good packaging, and no surprises. Everything arrived in great condition and ready to install.
Overall, it’s a simple part, but an important one. If you’re already in the engine doing timing components, this is absolutely worth replacing, and Z1 is a reliable place to get it.