Find the correct gearbox, motor parts or complete step for a Lippert Kwikee Series 28 electric RV entry step. The factory drawing identifies the straight B-linkage arrangement. Compare it with your step's label before selecting any replacement.
Kwikee 28 Series B-linkage factory parts drawing
Lippert's illustrated step parts chart identifies the motor at callout 1, pin kit at callout 2 and straight B-linkage gearbox at callout 4. The same page separately identifies the curved A-linkage at callout 3 for models including Series 28A.
Series 28 numbered drive components
1: Later IMGL-II motor (676061)Compare original drive generation
2: Clevis/cotter pin kit (379178)View matching part
4: Straight B-linkage gearbox (379161)View matching part
Series 28 uses the B-linkage gearbox. Series 28A is a different A-linkage variant. The full original Lippert diagram is available using the manual link below.
Series 28 electric step replacement parts
These factory part numbers identify the mechanical linkage, original service components and complete step packages. Always match the installed control generation before ordering a motor conversion.
| Diagram / model | Lippert number | Component and selection | Product |
|---|---|---|---|
| 1 | 676061 | Motor and screwsLater-generation motor reference; compare original motor plug and controller before buying. | — |
| 2 | 379178 | Linkage clevis and cotter pin kitPins used to secure the correct gearbox linkage. | View part |
| 4 | 379161 | B-style gearbox and linkageLippert identifies this for Series 28, 31, 37 and 39; the 28A uses a different A linkage. | View part |
| Frame | 3747457 | Series 28 step frameManufacturer frame-only reference, not a complete powered step. | — |
| Motor kit | 379769 | B-linkage motor and control conversionA separate upgrade package. Verify the original motor/control generation and exact kit contents with Lippert before ordering. | View part |
| Step | 3747452 | Complete Series 28 step without switch kitFactory assembly listing includes logic control; switch kit is not in this package. | View part |
| Step | 3747453 | Complete Series 28 step with switch kitFactory assembly with logic control and a power-switch kit. | View part |
| Separate model | 374923 / 379160 | Series 28A uses A-style curved gearboxSeries 28A is not the same as Series 28; check the full step label. | — |
| Door input | 379407 | Pleated-plunger door switchSwitch type and contact logic depend on original controller. Not a universal Series 28 replacement. | View part |
Kwikee Series 28 gearbox, pin kit and complete step photographs
Select a product photo to see its exact part number, contents and price. The B-linkage gearbox is a mechanical replacement; it is not the same package as a complete motor/controller upgrade.
379161B-linkage gearboxView part details ›379178Linkage pin kitView part details ›
3747452Series 28 step, no switch kitView part details ›
3747453Series 28 step with switch kitView part details ›
379769B-linkage conversion packageView part details ›
What to check before buying
Motor conversion kit: Kwikee 379769 is sold as a B-linkage motor upgrade package. Before ordering 379769, confirm the original step series, drive generation and package contents with Lippert.
Complete step assembly: 3747452 does not include a separate power-switch kit. 3747453 is offered with the switch kit. Confirm your original step opening, mounting dimensions, harness and door-switch configuration.
Safety: Disconnect power and follow the factory instructions before servicing a powered step. The linkage and tread can move unexpectedly.
Parts pictured in this guide
Select an image for product details, or view the diagrams and parts lists. Match the complete model and part number before ordering.
