I lost my stock fuel screw, spring, o-ring, and washer. I just ordered a zip-ty screw but of coarse it does not come with spring, o-ring, or washer. My dealer said he could not order just the spring ect. Kathy at zip-ty told me to tell the dealer that I had a 450 quad b/c they could order the o-ring, spring,and washer sepetly that way. I did and it worked like a champ. Saved me bout $15.00. Thanks Kathy!