[yeungun]

Too lazy to post actual pics but I have done several now, I don't know the exact cause of them failing but the ones I have replaced all have had broken brackets. Check and replace them as required.
One is under the oil pan, part number is 18213-SM4-A34
Second one bolts to the manifold and the block. #1 in the picture, part number 11942-P0A-000

 

[yakuza]

Replace it with an ebay 94-97 Accord LX header $30 and call it a day

 

[toyomatt84]

Mine cracked on both of my RA1's. Not a very durable design.