I modelled these stacks for my 4AGE Silvertop throttle bodies (47mm ID) for the Mazda MX-5 build. Stacks are 105mm tall.
Printed in ABS, they may or may not last in the engine bay. Use at your own risk!
I've printed these in ABS, they may or may not last in an engine bay.
I would recommend printing with 3 inner/outer shells at 0.5mm extrusion width.