This 11.3mm ear (crimp) clamp, part number 16700007,  is made by Oetiker (OEM) and can tighten down to 9.6mm. You will need ear clamp pliers to properly use this clamp.

This lock nut, part number N 90321302, is M12 x 1.5 and is class 8.

This 21mm ear (crimp) clamp, part number N 10201801 is made by Oetiker (OEM) and can tighten down to 17.8mm. You will need ear clamp pliers to properly use this clamp.

This 15.3mm ear (crimp) clamp, part number N 10032902, is made by Oetiker (OEM) and can tighten down to 12.8mm. Ear clamps are superior to worm drive because they don't loosen up or have flat spots. You will need ear clamp pliers to properly use this clamp.

This 24.1mm ear (crimp) clamp, part number N 10202001, is made by Oetiker (OEM) and can tighten down to 20.9mm. You will need ear clamp pliers to properly use this clamp.

This 28.6mm ear (crimp) clamp, part number N 90409501,  is made by Oetiker (OEM) and can tighten down to 25.4mm. You will need ear clamp pliers to properly use this clamp.

This 47mm ear (crimp) clamp, part number N 10029401, is made by Oetiker (OEM) and can tighten down to 43.8mm. You will need ear clamp pliers to properly use this clamp.

This official VW bolt, part number N 90556902, goes through the top of the bell housing and threads into the frame on every 72-79 Type 2 Bus. It is tapered at the end to help it locate the threads easier. It fits 1972, 1973, 1974, 1975, 1976, 1977, 1978 and 1979 models.