| Description
 | FAA Approved Replacement for 
 | Eligible Engine, Make and Model 
 | Gaskets
 
 | 
  | Front-Mount, 8 Bolt Oil Coolers
 | 
  | 
 | Continental 627392 Niagara 20585A
 | O-470-A,B,E,G,J,K,L,M,P,R,S,U IO-470- C,D,E,F,G,H,J,K,L,M,N,P,R,S,U,V
 | 654117 649964
 (plate)
 
 | 
  | Â | Continental 646880 Niagara 20591A
 | IO-360-A, AB, C, CB, D, DB, G, GB, H, HB, HB9, J, JB, K, KB, ES TSIO-360-A, AB, B, C, CB, D, DB, E, F, GB, H, JB, KB, LB, MB
 L/TSIO-360-E, EB, F, FB, GB, H, HB, JB, KB, LB, MB, RB
 | 654117 649964
 (plate)
 | 
  | Front-Mount, 12 Bolt, Congealing Oil Coolers
 | 
  | Non-7th Stud 
 | Continental 626189 Niagara 20573A
 | O-470-B, J, K, L, M, R IO-470-D, F, L, M, S
 IO-520-A, D, E, F, J, K, L
 L/TSIO-520-AE
 IO-550-D
 | 654553 649964
 (plate)
 | 
  | 7th Stud 
 | Continental 652671 Niagara 20440A
 | IO-520-A, D, E, F, J, K, L L/TSIO-520-AE
 IO-550-D
 | 654555 649964
 (plate)
 | 
  | Front-Mount, 12 Bolt, Non-Congealing Oil Coolers
 | 
  | 10"  Universal 7th Stud 
 | Continental 639171 Niagara 20795A
 Continental 654595
 Niagara 20617A
 | O-470-R, S, U IO-520-A, D, E, F, J, K, L
 TSIO-520-C, G, H, M, P, R, T, AF, CE IO550-D, E, F, L
 | 654554 652079
 (plate)
 | 
  | 11" Universal 7th Stud | Continental 639151 Niagara 20446A
 | IO-470-F, K, L, R IO-520-A, D, E, F, J, K, L
 | 654560 652079
 (plate)
 | 
  | 11" 7th Stud | Continental 654593 Niagara 20618A
 | IO-520-A, D, E, F, J, K, L | 654554 652079
 (plate)
 | 
  | 11.5" Universal 7th Stud | Continental 639152 Niagara 20623A
 | O-470-M IO-470-D, U, V
 IO-520-A, D, E, F, J, K, L
 | 654560 652079
 (plate)
 | 
  | 11.5" 7th Stud | Continental 652759 Niagara 20448A
 | IO-520-A, D, E, F, J, K, L | 654554 652079
 (plate)
 | 
  | Rear-Mount Oil Coolers
 | 
  | Â | Continental 654580 Niagara 10279A
 | TSIO-520-BE, E, J, L, N, VB, WB IO-550-B, C, G
 | G-KT-1 | 
  | Â | Continental 646685 Niagara 10196A
 | GTSIO-520-C, D, F, H, K, L, M, N | G-KT-2 | 
  | Â | Continental 654585 Niagara 10281A
 | IO-550-G, N, P, R, IO-F550-G, N, P, R
 | G-KT-3 | 
  | Â | Continental 654572 Niagara 10278A
 | IO-520-B, BA, BB, C, CB TSIO-520-B, BA, BB, C, CB, D, K, M, MB, UB
 IO-550-A, B, C
 | G-KT-4 | 
  | Â | Continental 655090 Niagara 10278A
 | IO-550-B, C IOF-550-B, C
 TSIO-520-B
 | G-KT-5 |