Rotary Lift® Filler Box Kit — PK304FC7117Y (SM/SMO 4-Post Alignment Retrofit Accessory)
The Rotary Lift PK304FC7117Y is a purpose-built filler box / spacer adapter kit designed for alignment lift retrofit applications. When converting or upgrading Rotary SM/SMO series 4-post lifts for 4-wheel alignment, there are often open spaces around the turntable pockets and alignment components. This kit is used to fill and bridge those gaps, creating a smooth, level surface that supports accurate measurements—especially for modern Rotary 3D imaging alignment equipment.
What it does
- Function: Filler box / adapter (spacer) kit for alignment runway openings
- Purpose: Ensures a flush, level surface around:
- Turning radius (turn) tables
- Rear slip plates (depending on retrofit configuration)
- Why it matters: A level, continuous surface helps prevent “edge drop,” wheel movement issues, and measurement inconsistencies that can affect alignment accuracy.
Compatibility
- Designed for: Rotary SM/SMO series 4-post lifts
- Use case: Works in conjunction with 4-wheel alignment retrofit kits for SM/SMO lifts (alignment upgrade/retrofit setups)
Best for
- Shops upgrading a service 4-post into an alignment-capable rack
- Facilities using Rotary 3D alignment systems that require stable, repeatable wheel positioning
If you’re retrofitting a Rotary SM/SMO 4-post for alignment, the PK304FC7117Y Filler Box Kit is a small but critical component that helps your alignment bay perform like a purpose-built alignment rack.



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