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7" large internal bores
Conical top M6 oval locking pinch nuts (x4)
The main difference is that an AOS system returns collected oil back into the oil pan so there is no servicing required
It has a smooth radius entry and is compatible with older regulators as well as RA-series regulators
Nissan RB20/25DET T3 Exhaust Manifold Vehicle Make_Astra 7" large internal bores*Suits Nissan RB20 and RB25* All 6Boost manifolds are individually hand made in Australia. They are specifically designed for your application and built around unique "merge collector" design. This means no pipes cross each other and the merge collector directs all exhaust gases at the turbine entry. We have these to suit many combinations, if you don't see the combination you require in our selection please email and we can have one custom made for
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