| L38 | Filters / Other | — |
| L39 | Filters / Other | 33 xrefs from ACDELCO, BALDWIN +20 more22 mfgs·74 OEM xrefs |
| L-4 | Filters / Oil | — |
| L-400 | Filters / Air | — |
| L-401 | Filters / Air | — |
| L-402 | Filters / Air | 66 xrefs from ACDELCO, AMSOIL +25 more27 mfgs·330 OEM xrefs |
| L-403 | Filters / Air | — |
| L-404 | Filters / Air | — |
| L-405 | Filters / Air | — |
| L-407 | Filters / Air | — |
| L-408 | Filters / Air | 133 xrefs from ACDELCO, AMSOIL +32 more34 mfgs·504 OEM xrefs |
| L-409 | Filters / Air | 27 xrefs from ACDELCO, AMSOIL +15 more17 mfgs·98 OEM xrefs |
| L41 | Filters / Other | — |
| L410 | Filters / Air | 53 xrefs from ACDELCO, AMSOIL +18 more20 mfgs·270 OEM xrefs |
| L-411 | Filters / Air | 21 xrefs from ACDELCO, BALDWIN +13 more15 mfgs·47 OEM xrefs |
| L-414 | Filters / Air | — |
| L-415 | Filters / Air | 34 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·66 OEM xrefs |
| L-416 | Filters / Air | 57 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·214 OEM xrefs |
| L-417 | Filters / Air | — |
| L-418 | Filters / Hydraulic | 13 xrefs from BALDWIN, CARQUEST +7 more9 mfgs·13 OEM xrefs |
| L-419 | Filters / Air | 40 xrefs from ACDELCO, BALDWIN +20 more22 mfgs·168 OEM xrefs |
| L-42 | Filters / Oil | — |
| L-420 | Filters / Air | — |
| L-421 | Filters / Hydraulic | 12 xrefs from BALDWIN, CARQUEST +7 more9 mfgs·13 OEM xrefs |
| L-422 | Filters / Air | — |
| L-423 | Filters / Air | 26 xrefs from ACDELCO, BALDWIN +13 more15 mfgs·56 OEM xrefs |
| L-424 | Filters / Air | 21 xrefs from ACDELCO, BALDWIN +13 more15 mfgs·46 OEM xrefs |
| L-428 | Filters / Air | 23 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·53 OEM xrefs |
| L-429 | Filters / Air | 19 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·38 OEM xrefs |
| L-43 | Filters / Oil | — |
| L-44 | Filters / Oil | — |
| L-45 | Filters / Oil | 28 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·41 OEM xrefs |
| L451 | Filters / Air | 34 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·66 OEM xrefs |
| L-46 | Filters / Fuel | — |
| L-47 | Filters / Oil | — |
| L-48 | Filters / Oil | 73 xrefs from ACDELCO, BALDWIN +21 more23 mfgs·174 OEM xrefs |
| L-49 | Filters / Fuel | 39 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·130 OEM xrefs |
| L5 | Filters / Other | 15 xrefs from ACDELCO, BALDWIN +10 more12 mfgs·47 OEM xrefs |
| L-50 | Filters / Oil | 45 xrefs from ACDELCO, BALDWIN +15 more17 mfgs·109 OEM xrefs |
| L501 | Filters / Air | 26 xrefs from ACDELCO, AMSOIL +16 more18 mfgs·50 OEM xrefs |
| L503 | Filters / Air | 70 xrefs from ACDELCO, AMSOIL +20 more22 mfgs·248 OEM xrefs |
| L504 | Filters / Air | 59 xrefs from ACDELCO, BALDWIN +19 more21 mfgs·271 OEM xrefs |
| L-507 | Filters / Air | — |
| L508 | Filters / Air | 56 xrefs from ACDELCO, AMSOIL +20 more22 mfgs·86 OEM xrefs |
| L-509 | Filters / Air | 41 xrefs from ACDELCO, AMSOIL +22 more24 mfgs·112 OEM xrefs |
| L510 | Filters / Air | — |
| L-511 | Filters / Air | 164 xrefs from ACDELCO, BALDWIN +25 more27 mfgs·489 OEM xrefs |
| L-512 | Filters / Air | — |
| L518 | Filters / Air | 59 xrefs from ACDELCO, BALDWIN +19 more21 mfgs·271 OEM xrefs |
| L-519 | Filters / Oil | 132 xrefs from ACDELCO, AMSOIL +27 more29 mfgs·360 OEM xrefs |
