Price:

MOC10ROW- 10 ROW COOPER S OIL COOLER (smaller)

This is the ideal size for minis, but everybody goes for the 13 row type cooler C-ARH221 which was fitted to the Cooper S eventually as standard but that was over 30 years ago, before the later type oils were intoduced and running temperatures of modern day engines changed. The 13 row type was fitted to the MGB and other variants which gives it a larger production run ,hence a more competitive price.