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Description
Rotary FJ2427 / FJ2439 1-1/2″ Rubber Stack Block Adapter for Auto Lifts and Rolling Jacks – Set of 2
This is a set of 2 solid rubber height adapter / stack blocks designed as an aftermarket replacement for Rotary FJ2427. These blocks sit between the lift pad and the vehicle contact point, adding 1-1/2″ of lift height to protect factory undercoating and pinch welds, and to clear step bars and rocker panels on trucks, SUVs, and modified vehicles. Because they are stackable, multiple blocks can be combined for additional height. Replace when blocks show cracking, deformation, or loss of grip.
Product Information
- Brand / Equipment: Rotary (aftermarket replacement)
- Manufacturer / Reference Part Number: FJ2427 (single); FJ2439 (kit)
- Store SKU: 2×1.5blk-ROY
- Component: Rubber stack block / height adapter / spotting block
- Dimensions: 6-1/4″ long x 4-3/4″ wide x 1-1/2″ tall
- Material: Solid rubber with diamond pattern surface
- Capacity: 3,500 lbs per adapter
- Quantity: Set of 2
- Listed Application: Low rise lifts, inground lifts, rolling jacks, 4-post lifts, 4-post alignment racks
Replacement / Cross-Reference Numbers
- Rotary: FJ2427 (single adapter), FJ2439 (kit of 4), FJ2196-20
- Challenger: 10549
Fitment & Ordering Notes
These rubber stack blocks are described by suppliers as compatible with many different lift brands and models, including Rotary 4-post lifts, 4-post alignment racks, rolling jacks, low rise lifts, and inground lifts. Before ordering, verify that your existing lift pads accept a set-on style adapter of these dimensions (6-1/4″ x 4-3/4″ x 1-1/2″). Confirm that your required lift pad adapter height is 1-1/2″ – a 3″ version (Rotary FJ2428 / ) is also available. Blocks can be stacked for additional height. This product is an aftermarket replacement, not an OEM Rotary part.
Additional Product Information
- Stackable design allows combining multiple blocks for greater vehicle clearance
- Diamond pattern surface provides grip between block and vehicle contact area
- Sold as a set of 2 (FJ2427 quantity per installation); a set of 4 is also available (equivalent to FJ2439 kit)
