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LD Remanufactured Replacement Yellow Ink Cartridge for C4933A / HP 81


Replaces: HP 81, C4933A

Reg. Price $199.99

Our Price $32.99

Buy 3 or more $32.99 each
Quantity In Stock!
The high-quality LD remanufactured C4933A (HP 81) yellow inkjet cartridge is an OEM HP C4933A cartridge that has been professionally remanufactured using both OEM and non-OEM parts. This remanufactured LD cartridge for HP 81 comes equipped with an ink indicator chip that accurately tracks your ink levels and communicates with your printer to be sure you are receiving the best quality print possible.
Our Lifetime Guarantee ensures that you will get excellent printouts when you buy our remanufactured C4933A. LD remanufactured ink cartridges are not remanufactured by HP.

Compatible Printers

This item is guaranteed to work with the following printers:


SKU C4933A
Product Type Ink Cartridge
Printer Brand HP
Brand Name LD Products
OEM Number C4933A
Ink Color Yellow
Cartridge Yield Type Standard Yield
Page Yield 1000*
Cost Per Page 3.30 cents
Capacity 680
Shelf Life 12-18 Months
*Average cartridge page yield in accordance with ISO IEC 24711
Is HP # 81 a Solvent Ink


Our remanufactured HP 81 has a nearly identical formula to the OEM unit. The quality and quantity should be as genuine. If you encounter an issue, please contact us immediately as you are backed 100% by our two year warranty.


Yes, I will buy this product again.


Very good quality and quick in shipping.



Uncharacteristically disappointing response


I reordered our normal replacement order for our printers (10 total cartridges). We were sent replacement cartridges from an "alternative vendor". Unfortunately, they did not fit our printers. We called to inform you about the issue and were told that they should fit and to try install them again. The only way we eventually got the cartridge to fit was my colleague had to literally cut off a part of plastic from the one cartridge that was out. Not ideal...and not safe. We hesitated doing this because of the safety concerns and potentially damaging the cartridge, but we had some printing that we wanted to get done, and figured we would risk it with the one. This does not seem like a sustainable practice moving forward. We have not had to replace any additional cartridges yet, and are mulling over how best to proceed. We have always had a great (5-star) experience with LD Products. Given that this is the first issue we have ever had with LD Products, I give you a little leeway (or else it would have been a 1 star). I am concerned about the less than adequate response however on your end, and hope that this is not a pattern that will continue moving forward.



Great products they stand behind!


I ordered this cartridge and I had it within the week. I put it in but it started leaking all over, there was a crack. But no concerns here because I know that LD stands behind what they sale. I called them and had a new on within a couple of days and sent this one right back to them. I've been buying cartridges from them for years.


Averill Park, NY


Product shipped quickly and the price was good.


Everything seemed ok. I have only used the cartridge a short time. Time will tell if I stay pleased.

No nickname.



Great experience


Service was absolutely amazing along with the price and delivery. As a school teacher you come to greatly appreciate this under the budget constraints we are under. Thank you for the product the savings and the very personalized service.

Don the scientist

Scooba MS



4.4 5


Cartridge Comparison Guide
  • Cartridge Types
  • Ink & Toner Basics
  • Number of Pages & Shelf Life
Cartridge Type
Genuine or OEM (Original) Cartridges Remanufactured Cartridges Compatible Cartridges
Description OEM stands for original equipment manufacturer, meaning the cartridge was made by the same company that made your printer. Original brand cartridges are very reliable and sometimes the only option if your printer is new to market or uncommon. Remanufactured ink is a genuine brand cartridge that has gone through one cycle of use. After use, the cartridge is recycled, acquired by a remanufacturing facility and put through a rigorous professional refurbishing process. During the refurbishing process the cartridge is disassembled, thoroughly cleaned and tested for quality. It's then carefully refilled, tested again and brought back to life. Buying remanufactured prevents one less cartridge from ending up in a landfill. A compatible cartridge is a brand new ink cartridge built by a manufacturer other than your printer. It's like buying the generic version of the genuine brand. Most are uniquely designed to differentiate from genuine cartridges. Despite any structural difference you may notice, the cartridge will still fit in your machine and print a full yield, just like the original brand.
Price Factors Many printer manufacturers follow the razor-and-blades business model which may result in higher priced genuine cartridges. Remanufactured ink is much cheaper than the original brand ink. It's far more cost effective to refurbish a previously used cartridge than create a new OEM from scratch. Compatible ink is much cheaper than the original brand. Compatible suppliers don't have to worry about the additional costs that hinder OEMs like new printers or firmware, which lets them keep prices low.
Quality Original cartridges work extremely well and are covered under a warranty by the printer manufacturer High quality remanufactured ink will match the quality of the original, but not all remanufactured ink is created equal. Make sure you buy from a reputable supplier in order to get the absolute best results. High quality compatible ink will match the quality of the original, but not all compatible ink is created equal. Make sure you buy from a reputable supplier in order to get the absolute best results.
What's the difference between ink and toner cartridges?
Ink Cartridges Toner Cartridges
Printer Type Work with inkjet printers Work with laser printers
Material Liquid ink Dry powder
How it works Inkjet printers use a series of nozzles that spray tiny drops of ink directly on the print suface Laser toner printers use static electricity and heat to bond dry toner powder to a page
Commonly used by Casual home users, small business and photographers Large businesses and schools
Number of Pages You Can Print A cartridge's page yield is the estimated number of pages you can print. Page yield is based on 5% page coverage. This means that the quoted page yield is based upon printed pages where only 5% of the page has been imprinted with ink. For example, a short memo has approximately 5% coverage. If you have a cartridge that has a yield of 500 pages, it can print 500 pages of that short memo. If you are printing letters, photos or graphics, your coverage will vary greatly and your page yield will drop significantly.
Cartridge Warranty and Shelf Life Most ink and toner cartridges include a warranty or "best by" date on their box. Remanufactured and compatible ink cartridges can last 12-18 months unopened, and toner cartridges can last up to 3 years.
Cartridge Care and Storage Only open a cartridge when you need it. Opened cartridges will eventually dry out, especially if the protective tape or clip has been removed. If you have an open ink cartridge around and would like to try and prevent it from drying out, place it nozzle side up in a plastic airtight tub. If your cartridge came with protective tape or a clip reapply both before storing. Place a damp cloth or paper towel in the tub, next to the cartridge and keep it stored in a cool, dark place.

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