Porsche Manual Trans Synchro Hub and Sleeve - Genuine Porsche 99630406103

Product Information

A manual transmission synchro ring (synchronizer ring) is a precision-machined brass or steel component inside a manual gearbox. Its role is to match the speed of the gear being engaged with the speed of the shaft, allowing smooth, grind-free shifting. It uses friction surfaces to “synchronize” gear speeds before the dog teeth engage.

• Gear grinding during shifts, especially when moving into 2nd or 3rd gear.
• Difficulty engaging gears, requiring extra force on the shifter.
• Gear pop-out under load, as worn synchros fail to hold the gear securely.

About Genuine Porsche

The original parts used by Porsche to build your car are available as replacement parts under the “Genuine Porsche” brand. Manufactured under the direction of Porsche, expect excellent quality and a premium price since these parts are exclusively available through the Porsche Dealership network.

You may not realize this, but the parts that make up your Porsche are not necessarily manufactured by Porsche. No cause for concern, as Porsche designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for Porsche for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine Porsche parts box and find an OEM branded part inside, simply with the addition of a Porsche logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.