Right-Hand (RH Passenger Side) Cabin Door Lock Latch Mechanism for Case IH & New Holland Tractors - Part Number: 65402121
The heavy-duty right-hand (RH passenger-side) cab door lock latch mechanism (part number 65402121, genuine CNH OEM references 82016379, I82016379) is an OEM-grade mechanical door closure assembly designed to deliver positive, secure cabin locking on agricultural tractors operating in demanding environments. Fabricated with a stamped high-tensile steel housing protected by an anti-corrosion galvanized coating, it features a dual-stage safety rotary catch mechanism with linkage sockets for internal release levers, external handles, and safety locking rods. Engineered to original factory CNH tolerances, it provides uniform clamping pressure against the right-hand door weatherstrip, eliminating cab vibrations, draft infiltration, wind noise, and dust ingress. It offers direct plug-and-play fitment across widespread agricultural fleets from Case IH (JXU, JX-U, MXM series) and New Holland (T5000, TL, TL-A, TM, TS series).
Key Features & Engineering Advantages
- Two-Stage Positive Rotary Safety Catch: Features a progressive two-step latching cycle (initial capture and fully locked position) that prevents unintentional door opening under heavy chassis twist and rough field transit.
- Direct CNH RH Cab Profile Fitment: Built strictly to factory specifications for CNH cab doors, ensuring immediate bolt-on installation on the right-hand door without drilling, slotting, or rod re-engineering.
- Anti-Corrosion Tropicalized Zinc Plating: Rugged metallic casing and internal pivot pins resist oxidation, moisture, acidic agrochemicals, mud, and high-pressure steam cleaning.
- Heavy-Duty Return Spring Mechanism: Calibrated spring pack delivers crisp, low-effort handle return, eliminating handle rattle, sag, and sticky mechanical actuation.
- Acoustic and Climate Cab Insulation: Exerts uniform clamping force on the perimeter door rubber seal of the right door, ensuring full cab soundproofing and maintaining climate control pressurization.
Technical Specifications
| Commercial Part Number |
65402121 |
| Mounting Location / Side |
Right-Hand (RH - Passenger Side Door) |
| Case IH / CNH OEM References |
82016379, I82016379 |
| New Holland OEM References |
82016379, I82016379 |
| Component Classification |
Mechanical internal cabin door lock latch mechanism |
| Structural Material |
High-tensile zinc-plated stamped steel with wear-resistant internal pivot bushings |
| Actuation Mechanism |
Dual-stage rotary latch with linkage rod attachment clips |
Equipment Compatibility & Tractor Application Guide
| Manufacturer |
Tractor Series |
Supported Tractor Models |
| Case IH |
JXU & JX-U Series |
JX 70U, JX 80U, JX 90U, JX 100U • JX 1070U, JX 1080U, JX 1090U, JX 1100U • JXU 75, JXU 85, JXU 95, JXU 105, JXU 115 |
| MXM Series |
MXM 120, MXM 130, MXM 135, MXM 140, MXM 150, MXM 155, MXM 165, MXM 175, MXM 180, MXM 190 |
| New Holland |
T5000 Series |
T5030, T5040, T5050, T5060, T5070 |
| TL & TL-A Series |
TL70, TL80, TL90, TL100 • TL70A, TL80A, TL90A, TL100A |
| TM Series |
TM115, TM120, TM125, TM130, TM135, TM140, TM150, TM155, TM165, TM175, TM180, TM190 |
| TS Series |
TS90, TS100 (11/97-7/03), TS110 (11/97-7/03), TS115 (12/98-12/02 & 7/01-7/03) |
Installation Advice & Workshop Notes: Prior to installation, remove the RH inner door trim panel to expose the latch mounting pocket and carefully unclip the linkage rods connected to the inner handle, exterior handle, and locking lever. Unbolt the old latch from the door frame profile. Install the new 65402121 latch, reattach all linkage rods into their plastic retaining clips, and verify smooth, unhindered articulation. Securely torque the mounting fasteners, then fine-tune the cab striker pin position: the door should latch smoothly on the first catch and close securely on the second catch, fully compressing the perimeter weatherseal without requiring excessive slamming. Periodically apply white lithium grease or a solvent-free PTFE spray to the internal moving cams and pawls.
