| WAF3993 | Filters / Air | 16 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·45 OEM xrefs |
| WAF3994 | Filters / Air | 13 xrefs from ACDELCO, BALDWIN +10 more12 mfgs·30 OEM xrefs |
| WAF3996 | Filters / Air | 21 xrefs from ACDELCO, BALDWIN +15 more17 mfgs·52 OEM xrefs |
| WAF3997 | Filters / Air | 12 xrefs from ACDELCO, BALDWIN +9 more11 mfgs·16 OEM xrefs |
| WAF3998 | Filters / Other | 14 xrefs from BALDWIN, BECK/ARNLEY +10 more12 mfgs·33 OEM xrefs |
| WAF3999 | Filters / Other | 19 xrefs from AMSOIL, BALDWIN +15 more17 mfgs·45 OEM xrefs |
| WAF4 | Filters / Air | 33 xrefs from AMSOIL, BALDWIN +19 more21 mfgs·162 OEM xrefs |
| WAF40 | Filters / Other | 11 xrefs from BALDWIN, CARQUEST +7 more9 mfgs·27 OEM xrefs |
| WAF4000 | Filters / Air | 16 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·28 OEM xrefs |
| WAF4001 | Filters / Air | 16 xrefs from BALDWIN, CARQUEST +12 more14 mfgs·32 OEM xrefs |
| WAF4002 | Filters / Air | 13 xrefs from ACDELCO, BALDWIN +10 more12 mfgs·28 OEM xrefs |
| WAF4003 | Filters / Air | 18 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·50 OEM xrefs |
| WAF4004 | Filters / Air | 12 xrefs from BALDWIN, CARQUEST +9 more11 mfgs·13 OEM xrefs |
| WAF4006 | Filters / Other | 15 xrefs from BALDWIN, BECK/ARNLEY +11 more13 mfgs·39 OEM xrefs |
| WAF4007 | Filters / Air | 12 xrefs from ACDELCO, BALDWIN +10 more12 mfgs·11 OEM xrefs |
| WAF4008 | Filters / Air | 23 xrefs from ACDELCO, BALDWIN +17 more19 mfgs·50 OEM xrefs |
| WAF4009 | Filters / Air | 12 xrefs from ACDELCO, BALDWIN +10 more12 mfgs·31 OEM xrefs |
| WAF401 | Filters / Air | 24 xrefs from ACDELCO, BALDWIN +13 more15 mfgs·78 OEM xrefs |
| WAF4010 | Filters / Other | 11 xrefs from BALDWIN, BECK/ARNLEY +7 more9 mfgs·23 OEM xrefs |
| WAF4011 | Filters / Air | 15 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·36 OEM xrefs |
| WAF4012 | Filters / Air | 18 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·44 OEM xrefs |
| WAF4014 | Filters / Air | 17 xrefs from ACDELCO, BALDWIN +13 more15 mfgs·32 OEM xrefs |
| WAF4015 | Filters / Air | 23 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·54 OEM xrefs |
| WAF4017 | Filters / Air | 17 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·47 OEM xrefs |
| WAF4019 | Filters / Air | 18 xrefs from ACDELCO, BALDWIN +15 more17 mfgs·37 OEM xrefs |
| WAF402 | Filters / Other | 18 xrefs from BECK/ARNLEY, BOSCH +9 more11 mfgs·61 OEM xrefs |
| WAF4020 | Filters / Other | 15 xrefs from BALDWIN, BECK/ARNLEY +11 more13 mfgs·43 OEM xrefs |
| WAF4021 | Filters / Air | 18 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·43 OEM xrefs |
| WAF4022 | Filters / Air | 37 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·100 OEM xrefs |
| WAF4023 | Filters / Air | 23 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·43 OEM xrefs |
| WAF4025 | Filters / Air | 14 xrefs from ACDELCO, BALDWIN +11 more13 mfgs·35 OEM xrefs |
| WAF4026 | Filters / Air | 15 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·34 OEM xrefs |
| WAF4027 | Filters / Air | 16 xrefs from ACDELCO, BALDWIN +13 more15 mfgs·33 OEM xrefs |
| WAF4028 | Filters / Air | 10 xrefs from ACDELCO, BALDWIN +8 more10 mfgs·17 OEM xrefs |
| WAF4029 | Filters / Air | 20 xrefs from ACDELCO, BALDWIN +13 more15 mfgs·39 OEM xrefs |
| WAF4030 | Filters / Air | 14 xrefs from ACDELCO, BALDWIN +11 more13 mfgs·42 OEM xrefs |
| WAF4031 | Filters / Air | 17 xrefs from ACDELCO, BALDWIN +11 more13 mfgs·30 OEM xrefs |
| WAF4032 | Filters / Other | 12 OEM xrefs |
| WAF4033 | Filters / Air | 18 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·48 OEM xrefs |
| WAF4034 | Filters / Other | 26 xrefs from BALDWIN, BECK/ARNLEY +19 more21 mfgs·81 OEM xrefs |
| WAF4035 | Filters / Air | 13 xrefs from ACDELCO, BALDWIN +10 more12 mfgs·10 OEM xrefs |
| WAF4037 | Filters / Other | 7 xrefs from BALDWIN, BECK/ARNLEY +5 more7 mfgs·11 OEM xrefs |
| WAF4038 | Filters / Air | 14 xrefs from ACDELCO, BALDWIN +11 more13 mfgs·33 OEM xrefs |
| WAF404 | Filters / Air | 19 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·46 OEM xrefs |
| WAF4042 | Filters / Air | 14 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·21 OEM xrefs |
| WAF4043 | Filters / Other | 7 xrefs from BALDWIN, BECK/ARNLEY +5 more7 mfgs·22 OEM xrefs |
| WAF4044 | Filters / Air | 17 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·33 OEM xrefs |
| WAF4045 | Filters / Air | 16 xrefs from ACDELCO, BALDWIN +12 more14 mfgs·31 OEM xrefs |
| WAF4046 | Filters / Other | 27 xrefs from BALDWIN, BOSCH +16 more18 mfgs·67 OEM xrefs |
| WAF4048 | Filters / Other | 4 xrefs from DENSO, K&N +2 more4 mfgs·11 OEM xrefs |
