This is a Genuine Poulan OEM Starter Recoil Spring. This is brand "NEW". Part # 545008013.. The Picture can describe this better than I can.

FITS BUT NOT LIMITED TO THE FOLLOWING MODELS:
· PP4620AV · PP4620AVHD · PP4620AVL · PP4620AVX · P3314 Gas Saw Type 1 · P3314 Gas Saw Type 2
· P3314WS Gas Saw Type 1
· P3314WS Gas Saw Type 2 · P3314WSA Gas Saw Type 1 · P3314WSA Gas Saw Type 2
· P3416 Gas Saw Type 1 · P3416 Gas Saw Type 2 · P3516PR Gas Saw Type 1
· P3516PR Gas Saw Type 2 · P3818AV Gas Saw Type 1 · P3818AV Gas Saw Type 2
· P4018 Gas Saw · P4018AV Gas Saw Type 1 · P4018AV Gas Saw Type 2
· P4018AV-BH Poulan Gas Saw Type 1 · P4018AV-BH Poulan Gas Saw Type 2
· P4018WM Gas Saw Type 1 · P4018WM Gas Saw Type 2 · P4018WT Gas Saw Type 1
· P4018WT Gas Saw Type 2 · P4018WTL · PP3516 Poulan Pro Gas Saw Type 1
· PP3516 Poulan Pro Gas Saw Type 2 · PP3516AVX · PP3816 Gas Saw Type 1
· PP3816 Gas Saw Type 2 · PP3816AV Gas Saw Type 1 · PP3816AV Gas Saw Type 2
· PP4018 Poulan Pro Gas Saw Type 1 · PP4018 Poulan Pro Gas Saw Type 2
· PP4218 Gas Saw Type 1 · PP4218 Gas Saw Type 2 · PP4218AV Gas Saw Type 1
· PP4218AV Gas Saw Type 2 · PP4218AVHD Gas Saw Type 1 · PP4218AVHD Gas Saw Type 2
· PP4218AVL Gas Saw Type 1 · PP4218AVL Gas Saw Type 2 · PP4218AVX
· PPB3416 Gas Saw Type 1 · PPB3416 Gas Saw Type 2 · PPB4018 Gas Saw Type 1
· PPB4018 Gas Saw Type 2 · PPB4218 Gas Saw Type 1 · PPB4218 Gas Saw Type 2
· S1970 Gas Saw Type 1 · S1970 Gas Saw Type 2 · SM4218AV Poulan Pro Gas Saw Type 1
· SM4218AV Poulan Pro Gas Saw Type 2