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Fitting Thread (both sides) = 1/2 in
GM-1973-1991 K10/1500 - K20/2500 - K30/3500
106 49 CFR 393
Rear Suspension - TRAPEZOID BOLT PATTERN
Circle Diameter
Tectran-17220-Basic Aircoil Set Air Gauge Fitting Thread (both sides) =17220 Basic Aircoil Set CoilSet Basic Aircoils feature color coded (red emergency blue service) hoses with DOT brass fittings. Excellent coil memory and durability. Heavy gauge plated spring guards. Spring guards closed coils extend well past 2" from fitting, exceeding DOT regulations. Meets DOT FMVSS 106 (49 CFR 571. 106 49 CFR 393. 45). Resistant to gasoline, diesel fuel, methyl alcohol and zinc chloride. Made in the USA Designed for 150 psi
