C8057A 4100 4101 Maintenance Kit , C8057-69001
 
Common error codes that replacing the fuser will fix are:
50.11 fuser. error, 50.1 fuser error, 50.2 fuser error, 50.3 fuser error, 50.4, fuser error, 50.5 fuser error, 50.7 fuser error, 50.8 fuser error,
50.9 fuser error. "Replace Fuser" Error
 
Kit Contents
1 HP 4100 Series Fuser RG5-5063
6 Feed/Separation Rollers RF5-3114
1 MP Pickup Roller Assembly RG5-3718
1 Transfer Roller Assembly RG5-5295
 
Installation Guide 
The 4100 Maintenance Kit Installation Instructions
 
Specs
Power: 110v
Original Mfr/Compatible : Compatible
Service Level: Outright
Alternative Description : Fixing Assembly
Condition : Equivalent To New
Shipping Weight : 3 lb 7 oz
Shipping Dimensions : 15.6” x 8.8” x 5.2”
Country of Origin : USA
Machine Section : Fusing
UPC  725184328299
Alternate Manufacturer part numbers: C8057A, C8057-69001
 
C8057A, C8057-69001 fits these printer models:
HP LaserJet 4100
HP LaserJet 4100dtn
HP LaserJet 4100MFP
HP LaserJet 4100n
HP LaserJet 4100tn
HP LaserJet 4101MFP
 
Other Helpful Resources
Paper Jam Solutions For Laserjet Printers
Printer Service And Parts Glossary
Printer Service Error Codes
Printer Fuser Technology Past, Present and Future