SA641066 has eligibilities only on the following engines.
Engine Configurations
GTSIO-520 -C, -D, -F, -H, -K, -L, -M, -N
IO-520 -A, -B, -BA, -BB, -C, -CB, -D, -E, -F, -J, -K, -L, -M, -MB
IO-550 -A, -B, -C, -D, -E, -F, -G, -L
LTSIO-520 -AE
TSIO-520 -AE, -AF, -B, -BB, -BE, -C, -CE, -D, -DB, -E, -EB, -G, -H, -J, -JB, -K, -KB, -L, -LB, -M, -N, -NB, -P, -R, -T, -UB, -VB, -WB
TSIOL-550 -A