Hi there and thank you for your question,
As long as you are not attempting to pass off your products as original products, you should be fine. You obviously can't use their branding and logos, but you can make references to their model numbers, etc on your website. Dimensions are also fine.
You can also display a picture of each item, but my advice is that you have somebody take a picture and use that picture. Don't use one of the "original" pictures.
You should ensure that the disclaimer is actually viewable at the bottom of each page on your website - in the footer. That should provide you with the protection that you want.
Your issue in the past was because your compressor had been manufactured to look identical to another manufacturer's compressor. In the above example this is not what you want to do. You want to make parts that are identical, but brand them as "non-genuine replacement parts". That's fine!
To avoid any future challenges, you should keep evidence of how you created the parts. You may need that as evidence in 10 years time should you need to prove it, or worse - go to court!
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Please note: This answer does not create an attorney-client relationship. Please consult a local attorney in person for legal advice. This information is being provided so you can better discuss legal matters with your attorney.