Product review (3 stars): Get the other Honeywell Thermopile
Buy the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Honeywell-CQ200A-1004-Replacement-Thermopile-Generator-750-Millivolt/dp/B000BQK5H6/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Honeywell CQ200A-1004 Replacement Thermopile Generator, 750 Millivolt</a>&nbsp;instead for much less money.  See my full review of it and others on that page.  It is the same but with a slightly smaller nut (1/2" doesn't fit most gas heaters), and a PG9 adaptor.  You can use the push-in clip that come with either product instead of the nut anyway. Do not buy the generic&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/White-Rodgers-3101-Millivolt-Generator/dp/B00062AZMA/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">White-Rodgers 3101 Millivolt Generator</a>&nbsp;-again see review on above listed page.

Why 3 stars?  It will work fine as a replacement Q313A with push-in clip (unless you need longer than a 35" wire).  Alternative Honeywell has more add-ons, is less expensive, also has a push-in clip etc., and is also a Q313A.