Product description

These special hollow-head cylinder bolts with fixed corrugated ring have only been used in Volkswagen Bus vehicles since the 1968 model year, although they are indispensable in today's automotive technology.

Fixed washer bolts were developed to speed up the production process or were used in places where a loose washer is inconvenient or sometimes impossible to fit and remove, such as where space is limited.

Although this is a standard part, you won't find them in a DIY store, they are mass-produced but mainly for the automotive sector.

Below you will find, per VW Bus model, where these bolts are used and the total number of parts required.

Volkswagen Bay Window Bus
- alternator bearing cover for Type 4 engine, 3 pieces required

Volkswagen Vanagon
-timing belt cover assembly diesel engines from 3.1984 (VIN 24-E-0199 707) 1 piece
-oil filter support on crankcase for diesel engines 3 pieces
-WBX coolant hose assembly on the right cylinder head 2 pieces
-WBX coolant hose assembly on left cylinder head up to 7.1985, 2 pcs.
-diesel pulley on water pump for cars with double pulley 3 pieces
-support for hydraulic pump 1 piece
-WBX coolant line to thermostat on water pump from 8.1985 2 pieces
-air pump support from 8.1985, 3 pieces