Identify replacement parts for a Lippert Kwikee Series 33 single electric RV step using the numbered A-linkage drawing, factory motor/controller chart and replacement-part photographs below. Start with the original step identification label to make sure you have Series 33 before selecting a motor, gearbox, switch or complete assembly.
Kwikee Series 33 factory gearbox and motor drawing
In Lippert's illustrated parts chart, callout 1 identifies the motor, 2 the clevis and cotter pin kit, and 3 the curved A-linkage gearbox. The Series 33 numbers are shown in the first table next to the drawing.
Kwikee Series 33 numbered parts · Lippert A-linkage system
Callout 1: 676061 motor and screwsFor the later IMGL-II drive; check the installed motor and controller
Callout 3: curved A-linkage gearboxView part 379160
Callout 2: cotter and clevis pin kitView part 379178
Callout 1: motor and screws, Lippert 676061 for the 2019-onward IMGL-II system. These are photos of the matching service parts; the complete manufacturer exploded drawing is in the full-size PDF link below.
Series 33 motor and controller generations
Kwikee electric-step drives were revised in 2006 and again in 2019. For a 2006–2018 IMGL system, Lippert directs replacing the motor and controller together with the corresponding IMGL-II update when either fails. On a 2019-or-newer IMGL-II system, individual replacement components may be suitable when their numbers and connections match. Earlier steps may require a complete conversion kit.
View Lippert's A-linkage motor and controller replacement chart
The top row of the factory chart includes Series 33. It separates pre-2006 conversion kit 781005, 2006–2018 update kit 781008, and later components 676061, 786949 and 676062.
Kwikee Series 33 motor and control generations
Check the installed motor and controller version before ordering. Open the factory chart below for the complete replacement guidance.
Series 33 replacement parts by manufacturer number
The table distinguishes the mechanical gearbox, pins and door switch from motor/controller update parts and complete step packages. Confirm the installed step and its electrical version before ordering.
| Diagram / version | Lippert part | Component and selection | Product |
|---|---|---|---|
| 1 | 676061 | IMGL-II motor with mounting screwsFactory motor shown for later Series 33 A-linkage systems. Check the installed controller before replacing a motor. | — |
| 2 | 379178 | Clevis pin and cotter pinSecures the original step linkage. Compare the pin dimensions and linkage position. | View part |
| 3 | 379160 | Curved A-linkage gearboxThe Series 33 mechanical drive is the A-style curved linkage, not the straight B- or C-style. | View part |
| 2019+ | 676062 | Motor, gearbox and A-linkage assemblyLater-generation IMGL-II drive assembly; match the corresponding controller and original step. | View part |
| 2019+ | 786949 | IMGL-II controllerController for the later motor generation. Check the original connector and control number. | — |
| 2006–2018 | 781008 | IMGL-to-IMGL-II motor/controller updateLippert specifies replacing both motor and controller when an earlier IMGL component fails. | — |
| 1999–2005 | 781005 | A-linkage conversion kitFactory update-kit reference for late pre-IMGL Series 33 steps. Verify original production date. | — |
| Complete | 3722661 | Series 33 single step with control and switch kitComplete single-tread electric step. Factory specification: 28.125-inch tread, 300 lb capacity. | View part |
| Other package | 372266 | Series 33 step with control, no switch kitDifferent package contents from 3722661; confirm the RV's original switch arrangement. | — |
| Other package | 3722662 | Series 33 standard-drive step with switch kitA separate complete-step configuration; not a motor or linkage service kit. | — |
| Door switch | 369311 | Black magnetic door-switch kitLippert lists Series 33 where this switch type is fitted. Match your existing door switch and control. | View part |
| Light | 379414 | Kwikee step lightFactory accessory reference for Series 33; confirm the installed light and harness. | — |
Compare Kwikee Series 33 parts and assemblies
The photographs below show the related step assembly, A-linkage gearbox, pin kit, later-generation drive assembly and black magnetic switch. Select the matching part number to view product details.
3722661Complete Series 33 electric stepSingle tread · control and switch kit · View part ›379160Curved A-linkage gearboxReplacement mechanical linkage · View part ›379178Clevis and cotter pin kitLinkage attachment hardware · View part ›
676062Later-generation drive assemblyIMGL-II motor and A-linkage gearbox · View part ›
369311Black magnetic door switchFor the matching black-control system · View part ›
Complete electric step 3722661
Lippert 3722661 is the Series 33 single-step assembly sold with logic control and a power-switch kit. The manufacturer specifies:
Before replacing the whole step, check the frame opening and mounting pattern, available folded clearance, harness connections and original door-switch type. The manufacturer separately lists 372266 without a switch kit and 3722662 with standard-drive operation; those package differences matter.
Before servicing a powered step
Disconnect 12V power and follow Lippert's maintenance and motor-service instructions before handling the linkage. The tread can extend or retract unexpectedly when a door or ignition input changes.