Seams to me that I've read several places that Progressive used Honda seals in the 416 shocks.
Yep, same seals were used.
Bill, The shock listed and used by Lehman is a Progressive 416 air shock. This is usually a SPECIAL ORDER part. The shock is 12.75" center-to-center. Progressive # 416-1633GLA retails for $499.00.
Got my attention.
Due to Progressive Suspension discontinuing the 416s, I have obtained two sets of seals to just "have on hand" using the numbers 30-5041 in my Google searches… packaging was bubble wrapped, original Progressive cardboards, both have part numbers
30-5041 and
76-5041 on them. I suspect that the 30-5041 number likely was Progressive's number, & that the 76-5041 was maybe that dealer or distributor's stocking number … or maybe the numbers have changed? In casual looking through notes, I ran across this thread link & thought I would include the info. 30-5041 appears on the back and one set's label says job #806018 printed 06/29/18 … the other says job #813352 printed 11/13/18.
Each seal set has two large seals for bottom of can
& a few O-rings for top of can as well as a printed instructions sheet. The 416s are no longer made as I understand it, if you have a set, a seal set on a hook in the shop would be a good idea I think,
better "to have and never need" than "to need and never have" them. The "shock body" is a sealed cartridge and not serviced, you are just servicing the air chamber or can … to cure air leaks.
As to the polyurethane upper & lower bushings in the shock eyes, mine still look good, but good chance they are still made & used even in regular coil overs, not just 416s. If not available from Progressive Suspension, a check against size charts (once known) for Energy Suspension might get you some.
https://www.energysuspensionparts.com/universal-shock-eyes.asp