Replacing a Kwikee Series 36 electric step or one of its drive components? This single-step model uses a 30-inch tread and curved A-linkage gearbox. The factory drawings, part numbers and replacement photographs below help identify the original assembly before you choose a motor, linkage, switch or complete step.
Kwikee 36 Series step measurements
Lippert specifies the following for the complete 3756271 step assembly. It is supplied with a logic control unit and a power-switch kit.
Kwikee 903609025 corresponds to Lippert 3756271 with the power-switch kit. The separately numbered 375627 is a complete Series 36 assembly supplied without that switch kit; 379412 identifies the frame alone. Compare the installed frame and bolt pattern before replacing the whole assembly.
Series 36 factory gearbox and motor diagrams
The numbered Lippert drawing shows the motor at 1, clevis and cotter pins at 2, and the curved A-style gearbox at 3. A straight B- or C-linkage gearbox is not the correct mechanical assembly for Series 36.
Kwikee Series 36 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.
Motor and controller selection for older steps
Kwikee revised the drive electronics in 2006 and again in 2019. Lippert's table shows the appropriate A-linkage motor, controller and upgrade packages by production generation. On a 2006–2018 IMGL system, the older motor and controller must be updated together if either fails; later IMGL-II parts should be paired with their matching control.
Kwikee Series 36 motor and control generations
Check the installed motor and controller version before ordering. Open the factory chart below for the complete replacement guidance.
Factory step and frame number chart
The Series 36 row identifies complete assemblies 375627 and 3756271, frame-only part 379412, curved gearbox 379160 and older IMGL service numbers.
Kwikee Series 36 motor and control generations
Check the installed motor and controller version before ordering. Open the factory chart below for the complete replacement guidance.
Kwikee Series 36 parts by manufacturer number
These numbers distinguish complete electric steps, the frame-only replacement, mechanical linkage parts and generation-specific electrical components. The original step identification label and controller wiring determine the appropriate service configuration.
| Reference | Lippert number | Component and selection | Product |
|---|---|---|---|
| Complete step | 3756271 | 36 Series complete electric step with logic control and power-switch kitThe 30-inch single-step assembly. Original Kwikee number 903609025. | View part |
| Different package | 375627 | 36 Series step with logic control, without power-switch kitOriginal Kwikee number 903609000. Confirm whether your installation already has the correct switch. | — |
| Frame only | 379412 | 36 Series replacement step frameKwikee 908036000. A frame-only part is not a complete motorized step. | — |
| Factory callout 1 | 676061 | IMGL-II motor with screwsMotor-only reference for later A-linkage drives. Match the installed controller generation. | — |
| Factory callout 2 | 379178 | Cotter and clevis pin kitConnects the correct step linkage; compare the original pin and joint. | View part |
| Factory callout 3 | 379160 | Curved A-linkage gearboxThe gear/linkage assembly for Series 36. Not the straight B- or C-linkage. | View part |
| 2019 onward | 676062 | IMGL-II motor, gearbox and curved linkageLater-generation drive assembly. Check the original motor and control number. | View part |
| 2019 onward | 786949 | IMGL-II controllerController-only reference. Use with its corresponding motor generation. | — |
| 2006–2018 | 781008 | IMGL-to-IMGL-II motor/controller update kitLippert calls for an appropriate paired update when the original IMGL motor or controller fails. | — |
| Late 1999–2005 | 781005 | A-linkage conversion kitFor the applicable pre-IMGL step generation; verify the original serial and build date. | — |
| Earlier IMGL | 379147 / 379146 | Earlier motor and 9510 controllerHistoric IMGL service references, not direct substitutes for the later IMGL-II pair. | — |
| Door switch | 369311 | Black magnetic step door-switch kitFor the matching black-control magnetic-switch arrangement, not every door sensor. | View part |
Series 36 step and drive-part photographs
Compare the complete 30-inch step with its gearbox, linkage pins, later-generation drive and black magnetic door switch. Select a photograph to view the product's part number and included components.
3756271Complete 36 Series electric step30-inch single tread with logic control and power switchView part details ›379160Curved A-linkage gearboxMechanical linkage and gear assembly, without motorView part details ›379178Clevis and cotter pin kitLinkage fasteners shown as factory callout 2View part details ›
676062IMGL-II motor and gearbox assemblyLater-generation A-style motor, gearbox and linkageView part details ›
369311Black magnetic door switchFor matching black-control step installationsView part details ›
Check the frame and door-switch arrangement
Lippert's step identification chart lists frame 379412 for Series 36, but the original mounting points must be measured before replacement. The complete step's switch kit is not necessarily the same as a separately purchased door switch. 369311 is a black magnetic door-switch kit for compatible black-control installations; match the existing switch style and wiring rather than selecting by step series alone.
Before servicing an electric step
Disconnect the 12V supply and follow the Lippert procedure before handling the linkage. The step may extend or retract when a door or ignition input changes. When replacing the complete step, check the mounting-bolt pattern, folded clearance and electrical connectors against the original installation.