This is a simple kit to assist in the installation of an AC Delco 21540 (GM 10353890) radiator. It consists of two “D” shaped air seals with permanent, double-sided adhesive tape installed. No SSR modifications are required. Just remove from the cardboard carrier, peel and stick. A radiator installation document (with time and effort saving shortcuts) is included with the seals.
Details of the HD radiator itself are available in the radiator web item on my web store here. ⚠️ You can procure the radiator from several online places (Amazon, Rock Auto, GM Parts Direct, etc), but you must be absolutely certain that you install a genuine GM / AC Delco radiator. Lower cost ones are available, but are not recommended.
This kit provides a cost-saving option to properly complete the radiator installation without the expense of ordering the radiator from Simple Engineering. No Kidding.GM / AC Delco Heavy Duty SSR Radiator