Thread Size M12x1,5x135. BERU Cylinder Head Bolt Set. Why Choose BERU?. Bolt Head-/Nut Design Male Star. HYUNDAI: 22321-2A600 HYUNDAI: 22321-2A600 (10x) KIA: 22321-2A600 KIA: 22321-2A600 (10x). Check your vehicle's specifications match the compatibility list below.
