I'm trying to order vacuum pods for my dad's 1990 300D 2.5, but figure out what parts fit is a bit of a hassle as the EPC is no longer free and the other versions of the EPC don't usually have great fitment information. Some of the HVAC parts were changed at different points in 1990 and it's difficult to figure out what is what. Now looking at it, there are 3 vacuum pods that are dual element. They all look to have the same body but different arms. Can I just order three of the same one and reuse the arms from the ones I have? That'll save me some hassle as to finding out which is which and will also save some money since the cheapest dual stage pod is $40 versus $80 for some of the others, plus current availability is sorta spotty.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.

I was able to swap the arms easily on my '91 W124. They were not riveted but held by reusable plastic studs.

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1974 Porsche 914 | 1980 Porsche 911SC
2002 Porsche 911 | 2002 Mitsubishi Montero | 2011 VW Golf

1wy pods can be taken apart and broken sub-parts can be replaced. Usually the diaphragm goes bad and another can be swapped in.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.

There's only one fully rebuildable pod in the W124 and I'm going to be ordering the diaphragm for it from George Murphy. Everything else I'm buying new, except the rectangular pod that's easy to access when you remove the CCU as it's fine in my car, I have a spare, it's not rebuildable, and it's $140 new.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.