HSP Diesel L5P 2020-2021 Upper Coolant Tube Polar White LMM Duramax " Improve your vehicle's throttle response

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HSP Diesel L5P 2020-2021 Upper Coolant Tube Polar White LMM Duramax " Improve your vehicle's throttle responseThe 637 2 HSP is best known as the HSP Upper Coolant Tube for the 2020 2021 L5P Duramax equipped Chevrolet and GMC trucks. The Upper Coolant Tube Why would you need the HSP Upper Coolant Tube for the 2020 2021 L5P Trucks? The factory upper coolant tube is a piece that just looks out of place. While the factory part works alright, it can fail due to the construction and the overall look just does not do the L5P engine the justice that it deserves. What