Fleece Performance 04.5-05 GM Duramax LLY Cylinder Head (Passenger Side) LLY the X-TRA Cool Radiators have

the X-TRA Cool Radiators have upgraded mounting points to maximize strength

and make more power than stock

TapShifter Operation is very straight forward

Stock upgrade with no core charge

Fits 68RFE and Aisin AS69RC Transmissions

Fleece Performance 04.5-05 GM Duramax LLY Cylinder Head (Passenger Side) LLY the X-TRA Cool Radiators haveIntroducing Fleece Performance Freedom Series cylinder heads for the 6. 6L Duramax! Each cylinder head is manufactured in our state of the art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valve guides, springs, and valve seals. Perfect for the daily driver or towing application, these heads utilize stock valves with a 45