So the parts you are looking for are listed in either Figure 16 or FIgure 17 for the Cylinder Head. I assume you have taken the injector valves off and are looking at what is inside the 3 holes. First, make sure you are asking about the correct Figure. There are 6 models listed as follows:
Fig 16 includes: 3GM30, 3GM30VE, 3GM30B, 3GM30C
Fig 17 includes: 3GM30F, 3GM30FVE
It appears that both figures have the same order and listing of parts, but they just have a different sequence numbering system (not the part number)
The diagram shows in order from bottom to top (just under the injector valve) with the number of parts needed
- 124950-11450 Gasket, Chamber (3)
- 105311-11420/105311-11430 Chamber, Rear/Pin (3) - this was 2 parts to the component
These parts (above) are captured inside the cylinder head, I believe, and won't be replaced if you aren't taking the cylinder head apart.
I didn't order those components. What I did order and replace are the parts listed below (I was able to extract the old parts with dental pick):
- Chamber Gaskets (again) 124950-11450 (3) I think these were copper washers.
- 128275-11410 Chamber, Rear (3) These little buggers were $15.12 a piece
- 128275-11490 Insulator (3)
- 128275-11500 Cover (3)
- 24341-000260 O-ring (3)
I spent $93 for these 5 parts.
Then the injector valve goes over it all.