This transfer case brace is a must - have for 2011 - 2019 GMC pick - ups with LML & L5P 6.6L Duramax engines. Cracked transmission tail shaft housings are a common headache in off - road and drag racing for GM Allison - equipped 4x4 pick - ups. Even small driveline vibrations can lead to housing failure, causing fluid leaks or serious internal damage. Once cracked, repairs are a hassle. This brace is the solution. It supports the heavy transfer case by spreading the load across the adaptor housing to the transmission center. It's made of two 304 stainless - steel 7/8 - inch support tubes connected by a thick 304 stainless - steel plate, boosting strength and longevity. And the best part? You can install it quickly and easily without removing the transmission or transfer case. PPE Part Number: 129021115. Key features include effective load - spreading, strong construction, and easy installation without special tools.

Using the transfer case brace is straightforward. First, find a suitable location near the transfer case and transmission on your 2011 - 2019 GMC pick - up with the specified Duramax engine. You don't need to remove the transmission or transfer case. Just attach the brace to the appropriate spots. It comes with all the necessary parts and can be installed without special tools. As for maintenance, periodically check the 304 stainless - steel support tubes and the connecting plate for any signs of wear or damage. If you notice any issues, it's a good idea to replace the parts promptly. Keep it clean to prevent dirt and debris from causing premature wear. That's it! With this simple routine, your transfer case brace will keep your vehicle in top shape for a long time.