I had to order this HP printhead to replace a defective new printhead sent by Amazon. While this initial replacement came reasonably quickly, I had to mail the defective printhead back, although Amazon did reimburse me for the postage. However, the printhead that came as a replacement is also defective. It worked briefly, but now won't print any black, which means my printer is essentially useless until I get another replacement that actually works. It hasn't been so easy getting Amazon to send another replacement. I tried, they responded saying they would send it, but nothing has come and I haven't heard any more from Amazon about getting the second defective printhead replaced. My further inquiries have (so far) gone unanswered, and I can't use my printer. Think of how your business might be affected if your printer was rendered unusable for weeks. This is hell. If I can't get a working replacement head soon, I'll be forced to pay more and buy another one from my local Costco. Then if the Amazon replacemnt finally comes, I'll have two and won't be able to test the replacement until the Costco one gives out, when the Amazon replacement will probably be too old to return.