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Raise Or Lower Idle Speed
which reduces the parasitic load on the engine
FULLY ADJUSTABLE - FROM 35-70 PSI
GM A-Body / B-Body / F-Body / X-Body 1974-79
Vehicle Applications: 1999-2016 Ford F-250 Super Duty
Hellwig Pro-Series Helper Spring 926015 Raise Or Lower Idle SpeedProduct Description: Helper Spring Kit Pro Add A Leaf Stock Height Rear Steel Silver Powder Coat Ford Fullsize Truck 2015 Hellwig Products was founded in 1946 after World War II and has remained family owned and operated to this day, manufacturing all of its steel products in Californias Central Valley. In an era when many companies have moved production of their products overseas, Hellwig has remained steadfast in its commitment to produce its
