THEY CAN BE USED ON MGA AND MGB CARS THAT YOU WANT TO BY PASS THE OIL COOLER. THIS IS A NEW OIL COOLER BY PASS HOSE THAT WAS FITTED TO 1975-1980 MGB ENGINES WHEN THEY WERE SOLD WTHOUT OIL COOLERS. IT IS MADE TO FIT FROM THE OIL FILTER HOUSING TO THE REAR FITTING ON THE ENGINE BLOCK.