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dyno-tuned intake tube to receive the factory mass airflow cartridge and achieve maximum power gains while maintaining a perfect fit
HC7-SPG4 kit features a Sport pressure plate for a nice upgrade
our spacers are CNC machined to strict tolerances resulting in superior strength and precision
Easy To Install In Less Than 2 Hours
AST Linear Race Springs - 220mm Length x 45 N/mm Rate x 61mm ID - Single 1991-gmc-r3500-base-esi8225617 dyno-tuned intake tube to receiveAST Linear Race Springs 220mm Length x 45 N mm Rate x 61mm ID Single
