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or run performance tuning
are nitrogen-charged for consistent performance
2 x 5 amp circuits
everything you need for a reliable seal and long lasting durability
Wehrli Custom Fab Coolant Plug 1.1" Bore 11-19 GM 6.6L Duramax CS-FEXP25-73 or run performance tuningThe WCFab Duramax Coolant Plug is a simple and effective solution for sealing unused coolant ports on your Duramax diesel engine. Precision CNC machined from billet aluminum and finished with a durable black anodized coating, this plug provides a clean, leak free seal while adding a professional look to your engine bay. Designed for Duramax engine covers with a 1. 1 inch bore, this plug installs easily and includes a high temperature silicone O ring
