Convert Racor 500FG Fuel filter to 500MA spec by adding a stainless steel shield.

This video shows how to convert a Racor 500FG fuel filter to 500MA spec, by adding a stainless steel shield. The filter will then comply with ASTM FS1201, Veritas, Det Norske Veritas, ISO 10088, and USCG. The custom left hand thread, shield retaining bolt is available from www.bottomlinemarine.com Part number: BLSRB-001

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If I may ask, what is the part number for the stainless steel shield, and where is it available?