If you're about to mount a turbo manifold or a turbocharger, you need the proper support bolts. The reason it's important is because of the heat and cooling generated by the turbo and manifold, which will cause a regular bolt to and nut to slowly rattle loose. Here you get a steel bolt that won't budge and a self-locking copper nut. The pin bolts are also well suited for mounting intake manifolds and similar mechanical parts.
Below you're able to choose pin bolts/support bolts and copper nuts, or a kit made for VAG 1.8T motors, often used for mounting turbo kits.
If you want to make absolutely sure, there is nothing shaking, you can use HEICO-LOCK washers.
If you require a size we don't currently sell, your more than welcome to contact us.