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Q5421A HP LaserJet 4250 4350 4240N maintenance kit with RM1-1082 Long Life fuser

Q5421A HP LaserJet 4250 4350 4240N maintenance kit with RM1-1082 Long Life fuser

PrinterTechs long life HP 4250/4350 series maintenance kits contain a fuser that we have upgraded to be more durable than the standard fuser. We have tested our long life fuser to over 500,000 pages, that’s double the life expectancy of new 4250/4350 fusers which are rated for 225,000 pages. This kit is available with a fuser exchange, see details below. The standard life fuser is a new fuser with the standard life expectancy of 225,000 pages.

Availability: In stock

Product Name Price Qty
PrinterTechs Long Life HP 4250 compatible maintenance kit WITH fuser exchange
PrinterTechs Long Life HP 4250 compatible maintenance kit WITHOUT fuser exchange

HP Laserjet 4250 4350 maintenance kit Q5421A

  • HP Laserjet 4250 4350 maintenance kit Q5421A
  • heating element comparison

Product Description

PrinterTechs® upgraded HP Laserjet 4250/4350 Long Life fusers last up to 500,000 pages! That's over twice the Genuine HP (OEM) life expectancy of 225,000 pages and roughly 4 or 5 times the life you get out of the cheap "refurbished" or new aftermarket fusers found ubiquitously across the internet.


The fusers in our 4250 4350 Long Life maintenance kits are upgraded and remanufactured by us, right here in the USA. We did the research and development on the parts, we did the testing, we did the quality control. There are no clueless middlemen who don't know where the parts came from or their durability. We have spent years testing and improving the parts we use in our fusers. Our techs take great pride in their work.


Each maintenance kit contains:

  • 1 fuser
  • 1 manual feed tray (tray 1) pickup roller
  • 1 manual feed tray separation pad
  • 4 feed/separation rollers for trays 2 and 3
  • 2 pickup rollers for trays 2 and 3


Also worth noting, we include a GOOD transfer roller.  I'll emphasize good because there are a lot of really bad transfer rollers out there including many genuine HP transfer rollers which are printing too light. This is discussed in the video below. Essentially the factory that is making those transfer rollers for HP is not making them to the right specifications, causing light print.


The maintenance kit part number is Q5421A, the fuser part number is RM1-1082. The maintenance kit contains a fuser and the rest of the rollers shown in the picture and described above.


Installation instructions

HP LaserJet 4240 4250 4350 instructions for replacing the fuser and maintenance kit


Exchange program

Purchasing a fuser on exchange is a simple way to save money and prevent electronic waste from ending up in a landfill. We send you a fuser and you send back your old fuser in the same box. Easy!

  • By purchasing a fuser or maintenance kit on exchange you are agreeing to send back your used fuser (core) within 30 days of purchase.
  • We will periodically email core return reminders at the email address given with the order. If the fuser core is not received within 30 days a core charge will be issued to your credit card.
  • Send the fuser core back in the original packaging along with the included return authorization sheet. Return shipping charges will be your responsibility.
  • International customers: Because of high shipping costs, we recommend you purchase fusers without a core exchange. If you do purchase fusers on exchange, understand your return responsibility will also include paying for any import fees, brokerage fees, or tariffs when sending your core back.

Additional Information

For use in the following printers: HP LaserJet 4240, HP LaserJet 4240n, HP LaserJet 4250, HP LaserJet 4250dtn, HP LaserJet 4250dtnsl, HP LaserJet 4250n, HP LaserJet 4250tn, HP LaserJet 4350, HP LaserJet 4350dtn, HP LaserJet 4350dtnsl, HP LaserJet 4350n, HP LaserJet 4350tn
Alternate part numbers Q5421A, Q5421-69007, Q5421-67903, RM1-1082 (fuser), RM1-1082-070 (fuser), RM1-1082-000 (fuser)
Core charge (for unreturned cores, exchange purchases only) $40