Xerox 6R737 Black Toner Cartridge for 5201/5203/XC355 (6R737) – Compatible Replacement | Castle Ink

Xerox 6R737 at a glance: about 2,000 pages. Compatible: newly manufactured black toner cartridge, not refilled. Fits Xerox 5201, 5203, 5305, 5306 personal copiers and XC351, XC355 and XC356. Backed by a 1-year 100% satisfaction guarantee; orders by 4 PM ET (Mon–Fri) ship the same day from Long Island, NY.

Key Facts

What's in the Box

• 1 × Xerox 6R737 compatible black toner cartridge — about 2,000 pages

Page yield is the published estimate for the matching original cartridge at roughly 5% page coverage. Your results will vary with what you print.

Compatible Printers (7 models)

• Xerox 5201
• Xerox 5203
• Xerox 5305
• Xerox 5306
• Xerox XC351
• Xerox XC355
• Xerox XC356

Don't mix these up: 6R737 is a Xerox copier toner for the 5201/5203/5305/5306 and XC351/355/356 personal copiers. It is not an HP LaserJet cartridge and does not fit HP LaserJet 2100 or 2200 printers (those use HP 96A, C4096A). Other Xerox XC and 5200-series copiers may use different toners, so match the code on your old cartridge.

Not sure? Look up your exact model on our Find Ink by Printer page, or contact us and we'll confirm the right ink for you.

Part Numbers & Also Known As

This toner replaces or is also searched for as: 6R737, 6R00737, 006R00737, 6-R737, 6 R737, Xerox 6R737, Xerox 5201 toner, Xerox 5203 toner, Xerox XC355 toner, Xerox XC356 toner

Chips, Printer Messages & Installation

Installation: take the cartridge out of its bag, rock it gently side to side five or six times to loosen the toner, then remove any seal or tape strip before installing it the same way as the original. Keep the cartridge level while handling it.

Print quality: if the first copies look light, make a few more copies to let the toner settle. Streaks or faint copies after installation are covered by our guarantee; contact us and we'll make it right.

Compatible (Newly Manufactured) vs. Original

Original (OEM) toner cartridges are new from the printer brand and cost the most. Compatible toner cartridges, like this one, are newly manufactured by a third party to the same size and fit as the original and filled with new toner, so they install and print the same way at a lower price. They are not refilled or used cartridges. Castle Ink sells compatible (newly manufactured) toner and remanufactured inkjet cartridges.

Other Options for the Same Printers

We don't list other supplies for these copiers. Use our Find Ink by Printer page or contact us if you need something else for your machine.

Frequently Asked Questions

How many pages does the Xerox 6R737 toner print?

About 2,000 pages at roughly 5% page coverage, the same rating published for the original cartridge.

Which copiers use Xerox 6R737?

The Xerox 5201, 5203, 5305 and 5306 personal copiers and the Xerox XC351, XC355 and XC356.

Is 6R737 the same as 6R00737 or 006R00737?

Yes. Xerox writes the same part number with and without the extra zeros; this cartridge replaces all three.

Is this an original Xerox cartridge?

No. It is a compatible, newly manufactured cartridge filled with new toner. Castle Ink is not affiliated with Xerox.

Will this void my printer warranty?

No. Under the U.S. Magnuson-Moss Warranty Act, a manufacturer can't void your printer warranty just because you used a third-party or compatible supply. If a non-original cartridge directly caused damage, that specific repair might not be covered.

How long can I store it?

Keep it sealed in its bag, lying flat, at room temperature and away from heat and direct sunlight. Once the seal is removed, install it promptly.

When will my order ship?

Orders placed by 4 PM ET, Monday through Friday, ship the same business day from Long Island, NY, by USPS (2–5 business days). Expedited 1–2 day delivery is available at checkout, and shipping is free on orders over $50.