1981-1991 GMC Jimmy 17" Polished Billet Aluminum Radiator Coolant Overflow Puke Tank, C/K Squarebody K5 Yukon Jimmy SUVThe Zirgo Standard Overflow Tank Is A Functional Treat For The Eyes! This 17" reservoir is for your 1981 1991 GMC Jimmy and mounts anywhere in your engine bay using beautifully crafted adjustable billet tank mounts. No need to drill holes or perform unnecessary fabrication to mount this tank, just adjust the clamping bracket and secure in seconds! Zirgo's unique internal adjustable overflow system eliminates the unsightly overflow tube from the top of