Thread Size M12x1,75x136. Why Choose Elring?. Bolt Head-/Nut Design Female Torx. Cylinder Head Bolt Set. OEM References: FORD: 6 732 295, FORD: 6 732 295 (10x), FORD: 6506833, FORD: 6732295, FORD: 91FF-6065-AB, MAZDA: 1E07-10-135, MAZDA: 1E07-10-135 (10x).