1986-87 Grand National G4S 7268

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We are proud to introduce our most powerful direct fit Buick turbocharger, the G4S-7268.  This unit has proven itself by taking home the win in the TAI class with Ron Bailey at the 2018 GS Nationals.  Proven 5 second performance out of your Buick, combined with quick response and big power.  Unit comes complete with direct fit 3 bolt turbine housing, water coolant line kit and -4AN oil feed fitting.   The G4S features the latest 9 bladed turbine wheel technology, dual ceramic ball bearings, twin gas seals on the compressor shaft for un-matched oil control, o-ring sealed billet aluminum backplate for leak free sealing at high boost and our high flow compressor cover in your choice of black ceramic, polished aluminum or natural finish. 

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