Replacement Heater Core Line Kit For 1989-98 Dodge 12 Valve 5.9 Cummins Fleece Performance

        Replace your leaking or corroded heater tubes with our upgraded stainless steel tubes and high temperature silicone hose kit from Fleece Performance.

        Fleece Performance
        • Brand: Fleece Performance
        Vehicle Specific
        • $530.60

        Replace your leaking or corroded heater tubes with our upgraded stainless steel tubes and high temperature silicone hose kit from Fleece Performance. This kit contains everything you need to replace your heater lines from the block to the firewall.

        This kit is designed as a direct replacement for all trucks originally equipped with air conditioning.

        Kit includes:

        • Stainless steel heater tube - replaces Cummins 3912086
        • Stainless steel heater tube - replaces Cummins 3912087
        • Silicone heater hose (straight tube to block) - replaces Cummins 3931522
        • Silicone heater hose (90 deg tube to block) - replaces Cummins 3957649
        • Silicone heater hoses (45 deg tubes to firewall)
        • Anodized billet aluminum hold down clamps, billet aluminum standoff, and mounting hardware for both stock and aftermarket manifolds
        • Hose clamps

        Application Notes:
        This kit is intended for use with trucks originally equipped with air-conditioning. If your truck is not equipped with air conditioning, you will need to supply your own 5/8 inch ID hose to run from the firewall ports to the stainless steel heater lines. 
        The silicone heater hose (tube to firewall) may require trimming for certain applications or to accommodate modifications made previously to the engine. 
        If your truck is equipped with an aftermarket exhaust manifold, the rear heater line standoff will not be utilized and an additional mounting bracket is provided.

          • SKU
          • Weight
            6 lbs
          • Barcode
          • Dimensions (L x W x H)
            34 x 13 x 3 in
          • Manufacturer Part #
        • Engine Year
        • Vehicle Type
        • Property 65 Warning
          CALIFORNIA WARNING: Cancer and Reproductive Harm
        • Brand
          Fleece Performance
        • Country of Origin
        • Sold As
        Customer reviews
        Please sign in to add review
        There are no comments yet. Be the first to leave a comment

        Shipping Times

        Most customers will see their parts within 3-5 business days. We will primarily ship with Purolator ground & DHL Express to ensure the fastest shipping possible.

        Please Note: These are only estimates and shipping time may vary depending on your location, out of country and rural locations expect longer wait times.

        Where Do We Ship 

        We will ship our products within Canada and the United States.

        Please Note: There are limitations what can be shipped to the United States.

        Damaged Shipments

        We provide the option to purchase insurance as we are not responsible for any damage while with a courier, we don’t often see issues, but it does happen. If you purchased insurance we will put in a claim, if no insurance was purchased there will be no refunds or exchanges.

        We accept the following payment methods:

        Return Policy

        It happens sometimes we would like to return it. Here are our return rules:

        • Prior to any return you must contact us and get an approval for a  RMA number
        • Product must be unopened and have no damage. 
        • You must pay for the shipping back, please insure so if anything happens you can make a claim, we are not responsible for damage during shipping and is the sole responsibility of the customer.
        • Regular products are subject to a 5% Restocking fee.
        • Items over 50 lbs. or special orders will be subject to a 20% Restocking fee.
        • Electronics & Tuning is a final sale and cannot be returned. 
        • Fitment Type
          Vehicle Specific
        1994DodgeRam 2500
        1994DodgeRam 3500
        1995DodgeRam 2500
        1995DodgeRam 3500
        1996DodgeRam 2500
        1996DodgeRam 3500
        1997DodgeRam 2500
        1997DodgeRam 3500
        1998DodgeRam 2500
        1998DodgeRam 3500