Overview Reviews Product Description 120083 Demon Vacuum Spring Assortment Complete assortment of 7 different diaphragm springs for vacuum secondary carburetors. The stiffness of the spring determines when the secondaries open. Product Videos Custom Field Product Reviews Write a Review Write a Review × 120083 Demon Vacuum Spring Assortment Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *