(open), T31 (Narrow) 4 bolt
Garrett® G30-660 standard turbo assembly kit with 3" inlet and 2" outlet compressor housing and 0.82 A/R T3 undivided (open), T31 4 bolt (narrow) outlet turbine housing. 



 
Product Features:
New G Series compressor wheel aerodynamics
Fully machined speed sensor and pressure ports
Oil restrictor and water fittings included with purchase
One piece center housing and backplate for increased durability
4 water jacket ports for customizable installation
Mar-M turbine wheel material rated up to 1050° C | 1922° F