Pro' Motorsport Spec 42mm Deep Oil Cooler core-only Built in-house here in the UK. Our Single Row 42mm Oil cores are built using our highly efficient tube for the best performance with a reliable balance of of all key aspects when selecting a core such as, offering the best thermal transfer whilst maintaining a lightweight design. Stack height ( height of the core ) is depicted by the tube and foil count being 'stacked' for example: 15 rows of Water tube with 16 rows of Foil result in a core height of - 156mm Core spec: 16 Fins Per inch ( core foil density ) with 7mm Fin height 15 Rows of Live tubes & 16 Rows of Fin Header Plate dimensions - 156mm high x 54mm deep / 12mm Return Folded Edges Cores are custom built to order. If you require multiple units of the same size, please contact us for quantity-break discounts. SH* - Stack Height TL* - Tube Length Core supplied pre-pressure tested, ready for preparation for welding.