Another great solution from Mercedessource!
1978 to 1995 Mercedes only
A broken radiator neck can be safely repaired if it breaks off cleanly in the center or aft of the center of the neck. If it breaks off too close to the tank or breaks off in multiple small pieces then we advise that you replace the radiator.
Product Details
To see an example of an acceptable repair please watch Kent’s Youtube video here: https://youtu.be/2yYz1xtPme0
This kit includes one reinforcement copper tube, special epoxy, sanding pads, pin stainless screws, wide hose clamp and gloves. The kit is only intended to fix one broken neck.
You might want to inspect the radiator neck in your own 1978 to 1995 Mercedes if it has a plastic upper tank. (Not applicable to 500SEL 560SEL and 560SL) If the neck is not damaged Kent recommends using a wider hose clamp that the one originally supplied. A wider hose clamp is included in the kit and should be used after the repair.
Here you see a radiator neck on a W123 300D that was just repaired. Epoxy must be adequately dry before starting the engine.
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How to view this on-demand video instructions:
Once you complete the purchase of this product you will be able to view the video immediately when you are logged in and on your personal account page (click on My Account). The video(s) will show up under My Video Manuals. The video is NOT downloadable to your computer or mobile device, but you will be able to view it anytime, from anywhere and from any device as long as you have internet access and you are logged in to your account at mercedessource.com.
Related Products:
Plastic Radiator Neck Reinforcement Kit
ALERT! ALERT! 10 years after I first started warning about this, I saw it again in my shop on Feb. 20, 2011. Seems to be happening even more now as these radiators age. I loosened up the upper hose clamp on this 123 300TD radiator and it just fell off.