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Cylinder Assembly Cross Reference
Lycoming
Engine Model
Air Boss® Nickel
Cyl Assembly
Air Boss® Steel
Cyl Assembly
Lycoming
Cyl Assembly
Superior
Millennium Cyl
Description
O-235-F, J (High Compression)     O5K23040 SL10302-A20P Narrow Deck
O-235-K, L, M (Medium Compression)     O5K23037 SL10302-A21P Narrow Deck
O-320-A1B,A2B,A2C,A2D,A3A,A3B,C2B,
C2C,C3B,C3C,E1A,E1B,E1C,E1F,E1J,E2A,
E2B,E2C; IO-320-A1A,A2A,E1A,E1B,E2A,
E2B; AEIO-320-E1A,E1B,E2A,E2B
TISN04.0CA TIST04.0CA O5K21237 SL32006W-A21P Wide Deck
O-320-B2B,B2C,B2D,B2E,B3B,B3C,D1A, D1B,D1C,D1D,D1F,D2A,D2B,D2C,D2F, D2G,D2H,D2J,D3G; IO-320-B1A,B1B,B1C,B1D,B1E,B2A,C1B,D1A, D1AD,D1B,D1C; AIO-320-A1A,A1B,A2A,A2B, B1B,C1B; LIO-320-B1A; AEIO-320-D1B,D2B TISN04.1CA TIST04.1CA O5K21100 SL32006W-A20P Wide Deck
IO-320-C1A,C1B,C1F,F1A; LTIO-320-C1A TISN05.0CA TIST05.0CA O5K21242   Wide Deck
O-320-A1A,A2A,A2B,A2C,A3A,A3B,A3C,
E1A,E1B,E2A,E2C;IO-320-A1A,A2A
TISN06.0CA TIST06.0CA O5K21423   Narrow Deck, Spot-Faced
IO-320-B1A,B1B; LIO-320-B1A TISN07.0CA TIST07.0CA     Narrow Deck
O-320-B1A,B1B,B2A,B2B,B3A,B3B,B3C,
D1A,D1B,D2A,D2B,D2C
TISN08.0CA TIST08.0CA O5K21101 SL32006N-A20P Narrow Deck
O-360-B1A,B1B,B2A,B2B,D1A,D2A,D2B;
O-540-B1A5,B1B5,B1D5,B2A5,B2B5,B2C5,
B2C5D,B4A5,B4B5,B4B5D
TISN10.0CA TIST10.0CA O5K21103 SL36006N-A21P Narrow Deck
O-360-A1A,A1C,A1D,A2A,A2E,A3A,A3D,
A4A,C1A,C1C,C1G,C2A,C2B,C2C,C2D;
HO-360-A1A,B1A,B1B; IO-360-B1A,B1B,
B1C; HIO-360-B1A,B1B; AEIO-360-B1B;
O-540-A1A,A1A5,A1B5,A1C5,A1D,A1D5,
A2B,A3D5,A4A5,A4B5, A4C5,A4D5,D1A5,
E1A,E4A5,E4B5,E4C5,F1A5,F1B5,G1A5,
G2A5; IO-540-C1B5,C1C5,C2C,C4B5,C4B5D,
C4C5, D4A5,D4B5,N1A5,N1A5D
TISN10.1CA TIST10.1CA O5K21102 SL36006N-A20P Narrow Deck
O-360-A1A,A1AD,A1D,A1F,A1F6,A1F6D,
A1G,A1G6,A1G6D,A1H,A1H6,A1J,A1LD,
A1P,A2A,A2D,A2F,A2G,A2H,A3A, A3AD,
A3D,A4A,A4AD,A4D,A4G,A4J,A4JD,A4K,
A4M,A4N,A4P,A5AD,C1A,C1C,C1E,C1F,
C1G,C2A,C2B,C2C,C2D,C2E,C4F,C4P,
F1A6,G1A6; HO-360-C1A; IO-360-B1B,
B1BD,B1D,B1E,B1F,B1F6,B1G6,B2E,B2F,
B2F6,B4A,E1A,L2A, M1A,M1B; LO-360
A1G6D,A1H6; HIO-360-B1A,B1B,G1A;
AEIO-360-B1B,B1D,B1F,B1F6,B1G6,B1H,
B2F,B2F6,B4A, H1A,H1B; O-540-A4D5,
E4A5,E4B5,E4B5D,E4C5,G1A5,G1A5D,
G2A5,H1A5,H1A5D,H1B5D,H2A5,H2A5D,
H1B5, H2B5D; IO-540-C4B5,C4B5D,C4D5,
C4D5D,D4A5,D4B5,D4C5,N1A5,N1A5D,
T4A5D,T4B5,T4B5D,T4C5D,V4A5, V4A5D;
AEIO-540-D4A5,D4B5,D4C5,D4D5
TISN12.0CA TIST12.0CA O5K21104 SL36006W-A20P Wide Deck
O-360-B1A,B2C,D2A; TIO-360-A1A6D;
LTIO-360-A1A6D; O-540-B2B5,B2C5,B2C5D,
B4B5,B4B5D
O5K21192 SL36006W-A21P Wide Deck
IO-540-J4A5,R1A5; TIO-540-G1A O5K21241   Narrow Deck
TIO-540-C1A,E1A,H1A O5K21234   Narrow Deck
TIO-540-C1A,C1AD O5K22129   Wide Deck
TIO-540-K1AD,AA1AD,AB1AD,AB1BD,
AF1A,AG1A,AK1A; LTIO-540-K1AD
O5K22128   Wide Deck
O-540-J1A5D,J1B5D,J1C5D,J1D5D,J2A5D,
J2B5D,J2C5D,J2D5D,J3A5,J3A5D,J3C5D;
IO-540-W1A5,W1A5D,W3A5D,AB1A5
O5K21117   Thin Wide Deck
O-540-L3C5D O5K21231   Thin Wide Deck
*Note all other engine models available in OEM only.