HSP Factory Replacement Coolant Tank (2001-2016)

Part# Flag Red

$406.25 Includes Free Shipping.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

HSP Factory Replacement Coolant Tank

Fits 2001-2016 Silverado/Sierra  2500HD/3500HD 6.6L Duramax

Part# 027-HSP-X/427-HSP-X/527-X-HSP-X

Please allow at least 25+ Business Days before shipment, as all HSP Products are special order.

Before we talk about what HSP Diesel did differently when designing our tank let’s first talk about the factory one a little bit more. The factory tank is a plastic design that honestly looks dirty all the time and is just something that when you are trying to dress up the engine bay there’s not much you can do to make the factory one look good or last. So HSP Diesel created the Factory Replacement Tank we started with the material using aluminum. We then CNC cut and bend them and finish with hand welds done by our top of the industry welders. Adding all of the factory provisions and fittings needed for this is a drop-in replacement tank, and also uses a factory low coolant sensor to prevent any check engine lights or notifications. Now the major reason we created this was to prevent failures. The HSP Factory Replacement Tank is made to stand the test of time and won’t crack or fail like the factory tank did or will, and let’s be honest with our powder coating options and custom color options this tank is going to be the first thing that is looked at under the hood when you open it.


  • Aluminum Material looks better and last longer
  • Factory drop-in
  • Color options to match other parts
  • Factory provisions and sensors
  • Uses factory cap


  • This is a custom order part. Once the order has been processed it CANNOT be cancelled, returned, or refunded.