FC219 oil filler cap appearance

[Gyrobob]

How can you tell if an oil filler cap is the version with the pressure relief valve in it? The FC219 version. I'm having a rebuilt engine installed (2016 LT 2.4L Ecotec) and I want to make sure it has that improved cap on it.

 

[PaulD]

If you look at the underside, you will see a small hole. FC219 is what you want.

https://www.amazon.com/ACDelco-FC219-Original-Equipment-Engine/dp/B000C9S2J0?pd_rd_w=pmE3D&content-id=amzn1.sym.deffa092-2e99-4e9f-b814-0d71c40b24af&pf_rd_p=deffa092-2e99-4e9f-b814-0d71c40b24af&pf_rd_r=2H56EHNC9S6E8HYZ5DFK&pd_rd_wg=hvrIx&pd_rd_r=22308243-ffcf-4ae2-a5a1-104946677638&pd_rd_i=B000C9S2J0&psc=1&ref_=pd_bap_d_grid_rp_0_1_i

 

[SYDNESB]

How can you tell if an oil filler cap is the version with the pressure relief valve in it? The FC219 version. I'm having a rebuilt engine installed (2016 LT 2.4L Ecotec) and I want to make sure it has that improved cap on it.

The bottom is sealed and has small orifice. Google a pic of it and compare.