Recognize these bushings?

[rv7Jim]

I just finished inventory of the power plant kit and these were in one of the bags of hardware. Unfortunately I don’t remember what bag they came out of. There wasn’t anything listed in that bag that matched these so I set them aside. Thanks

 

[Brantel]

I think those are for radiator mounting but I am not sure because I have the new cowl mounted setup.

 

[rv7Jim]

I’ve tried searching the web store but haven’t found anything. They remind me of a cush drive in the hub of a motorcycle rear wheel.

 

[Fisherpd]

EA WR4-140 and EA WB4-140 bushings used to mount the radiator and oil cooler for the engine mounted configuration.

 

[docjjrmd]

Brian is correct. Those are isolation bushings used when mounting oil cooler and radiator using the original or version 2 mounting style. The 3rd and current system is to mount to cowl. See SB-00088 Rev 2 for the change from original style to version 2. My power plant kit came with the original hardware and SB-00088 instructions and the new (now old) bracket with those same bushings. SL-00112 describes moving the oil cooler and radiator to the cowl and requires the purchase of Kit SL-00112A or B. Presumably, if your power plant kit was shipped after 9-30-2025 you have SL-00112 included. The bushings were included in a hardware bag that probably was picked and packed before 9-2025. They bushings are not now used but there are planes flying with them so somebody out there may find them useful. The original part numbers are WR4-140 and WB4-140.

 

[docjjrmd]

EA WR4-140 and EA WB4-140 bushings used to mount the radiator and oil cooler for the engine mounted configuration.

Great minds think alike... had to go look up the number.

 

[rv7Jim]

Thanks for the info!