SRF Turbo Coolant Fitting - 2017-2025 L5P Duramax
-Billet Aluminum
-High Temp O-Ring for leak proof seal.
*Stock Trucks may require modifications to coolant hoses*
Intended for 'Off-Road' Modified Equipped Trucks
Exclusively in Black Anodized from UnderDog Diesel
Description
The Square Root Fabrication L5P Duramax Turbo Coolant Fitting is a much needed prevention item.
As these L5P's age, and get more heat cycles through them, things tend to break down, and a factory part that has shown to have failures, is the factory coolant tube off the left hand side of the turbocharger. This line ends up breaking near a welded area towards the bolted flange (see below).
When this line ruptures/cracks, it will leave you stranded and you'll be forced to tow the truck, or search around for a dealership who has a replacement line for a premium and fix it on the side of the road.

Avoid future issues on your modified L5P Duramax with this Billet Aluminum Replacement.
Replaces GM 12691899
Details
- SRF-L5P-TCF
- SRF-L5P-TCF
- Square Root Fabrication
- In stock. Order by 2PM EST for guaranteed same day shipping.
- New
Shipping Information
- Item Requires Shipping
- 0.2 lbs.
- W2.0000” x H2.0000” x L1.0000”
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