Standard
The 20-0087 O-ring Service Kit is compatible with both new and old-style “standard” (4″ OD) fuel surge tanks (FST and FST-R).
INCLUDES:
-Small O-rings for M5 bolts (x16)
-Large O-rings for older style FST (x2)
-Gaskets for newer style FST (x2)

Multi-Pump
The 20-0088 O-Ring Service Kit is for the large (6″ OD) surge tank canisters.
INCLUDES:
-Large gaskets for canister lids (x2