| 21-DC-DC01 | Filters / Other | 7 xrefs from BOSCH, COOPERSFIAAM +5 more7 mfgs·21 OEM xrefs |
| 21-DW-W1 | Filters / Other | 17 xrefs from ACDELCO, BOSCH +10 more12 mfgs·54 OEM xrefs |
| 21-DW-W14 | Filters / Other | 13 xrefs from ACDELCO, BOSCH +10 more12 mfgs·41 OEM xrefs |
| 21-DW-W15 | Filters / Other | 28 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·88 OEM xrefs |
| 21-DW-W16 | Filters / Other | 13 xrefs from ACDELCO, BOSCH +8 more10 mfgs·37 OEM xrefs |
| 21-DW-W19 | Filters / Other | 28 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·88 OEM xrefs |
| 21-H0-H00 | Filters / Other | 27 xrefs from ACDELCO, BALDWIN +14 more16 mfgs·104 OEM xrefs |
| 21-H0-H01 | Filters / Other | 22 xrefs from ACDELCO, BOSCH +13 more15 mfgs·78 OEM xrefs |
| 21-H0-H011 | Filters / Other | 29 xrefs from ACDELCO, BECK/ARNLEY +16 more18 mfgs·105 OEM xrefs |
| 21-H0-H013 | Filters / Other | 12 xrefs from BOSCH, CHAMPION +10 more12 mfgs·40 OEM xrefs |
| 21-H0-H04 | Filters / Other | 38 xrefs from ACDELCO, BALDWIN +20 more22 mfgs·118 OEM xrefs |
| 21-H0-H05 | Filters / Other | 21 xrefs from BALDWIN, BECK/ARNLEY +13 more15 mfgs·60 OEM xrefs |
| 21-H0-H07 | Filters / Other | 29 xrefs from ACDELCO, BECK/ARNLEY +16 more18 mfgs·105 OEM xrefs |
| 21-H0-H09 | Filters / Other | 14 xrefs from ACDELCO, BOSCH +10 more12 mfgs·56 OEM xrefs |
| 21-HY-H00 | Filters / Other | 23 xrefs from BECK/ARNLEY, BOSCH +13 more15 mfgs·100 OEM xrefs |
| 21-HY-H03 | Filters / Other | 29 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·109 OEM xrefs |
| 21-HY-H11 | Filters / Other | 27 xrefs from ACDELCO, BECK/ARNLEY +14 more16 mfgs·96 OEM xrefs |
| 21-HY-H23 | Filters / Other | 26 xrefs from BECK/ARNLEY, BOSCH +13 more15 mfgs·76 OEM xrefs |
| 21-HY-H27 | Filters / Other | 11 xrefs from BOSCH, CHAMPION +6 more8 mfgs·35 OEM xrefs |
| 21-HY-H28 | Filters / Other | 23 xrefs from BECK/ARNLEY, BOSCH +10 more12 mfgs·98 OEM xrefs |
| 21-HY-H29 | Filters / Other | 14 xrefs from BOSCH, CARQUEST +10 more12 mfgs·73 OEM xrefs |
| 21-HY-H32 | Filters / Other | 23 xrefs from BECK/ARNLEY, BOSCH +15 more17 mfgs·85 OEM xrefs |
| 21-HY-H33 | Filters / Other | 10 xrefs from BOSCH, COOPERSFIAAM +6 more8 mfgs·32 OEM xrefs |
| 21-JE-JE2 | Filters / Other | 17 xrefs from BALDWIN, BOSCH +11 more13 mfgs·64 OEM xrefs |
| 21-KI-K06 | Filters / Other | 23 xrefs from BECK/ARNLEY, BOSCH +13 more15 mfgs·100 OEM xrefs |
| 21-KI-K09 | Filters / Other | 17 xrefs from ACDELCO, BOSCH +12 more14 mfgs·64 OEM xrefs |
| 21-KI-K10 | Filters / Other | 22 xrefs from BALDWIN, BECK/ARNLEY +16 more18 mfgs·96 OEM xrefs |
| 21-KI-K17 | Filters / Other | 14 xrefs from ACDELCO, BOSCH +9 more11 mfgs·42 OEM xrefs |
| 21-KI-K18 | Filters / Other | 21 xrefs from ACDELCO, BOSCH +12 more14 mfgs·61 OEM xrefs |
| 21-KI-K20 | Filters / Other | 10 xrefs from BOSCH, COOPERSFIAAM +7 more9 mfgs·32 OEM xrefs |
| 21-LR-LR1 | Filters / Other | 27 xrefs from ACDELCO, BALDWIN +16 more18 mfgs·88 OEM xrefs |
| 21-LR-LR2 | Filters / Other | 16 xrefs from BOSCH, CHAMPION +10 more12 mfgs·53 OEM xrefs |
| 21-LR-LR3 | Filters / Other | 20 xrefs from BALDWIN, BECK/ARNLEY +15 more17 mfgs·50 OEM xrefs |
| 21-LR-LR5 | Filters / Other | 17 xrefs from ACDELCO, BALDWIN +11 more13 mfgs·75 OEM xrefs |
| 21-LR-LR7 | Filters / Other | 22 xrefs from ACDELCO, BOSCH +12 more14 mfgs·67 OEM xrefs |
| 21-MA-MA10 | Filters / Other | 25 xrefs from ACDELCO, BOSCH +15 more17 mfgs·86 OEM xrefs |
| 21-MA-MA18 | Filters / Other | 11 xrefs from BOSCH, COOPERSFIAAM +9 more11 mfgs·27 OEM xrefs |
| 21-MA-MA5 | Filters / Other | 25 xrefs from ACDELCO, BOSCH +15 more17 mfgs·86 OEM xrefs |
| 21-MA-MA7 | Filters / Other | 30 xrefs from ACDELCO, BOSCH +17 more19 mfgs·103 OEM xrefs |
| 21-MA-MA8 | Filters / Other | 18 xrefs from BALDWIN, BECK/ARNLEY +13 more15 mfgs·77 OEM xrefs |
| 21-MI-MI5 | Filters / Other | 17 xrefs from BECK/ARNLEY, BOSCH +12 more14 mfgs·80 OEM xrefs |
| 21-MI-MI7 | Filters / Other | 23 xrefs from BECK/ARNLEY, BOSCH +13 more15 mfgs·62 OEM xrefs |
| 21-NS-NS0 | Filters / Other | 21 xrefs from ACDELCO, BOSCH +13 more15 mfgs·62 OEM xrefs |
| 21-NS-NS10 | Filters / Other | 26 xrefs from BALDWIN, BECK/ARNLEY +14 more16 mfgs·93 OEM xrefs |
| 21-NS-NS11 | Filters / Other | 18 xrefs from ACDELCO, BOSCH +12 more14 mfgs·60 OEM xrefs |
| 21-NS-NS12 | Filters / Other | 29 xrefs from ACDELCO, BOSCH +14 more16 mfgs·83 OEM xrefs |
| 21-NS-NS13 | Filters / Other | 12 xrefs from BOSCH, CHAMPION +10 more12 mfgs·38 OEM xrefs |
| 21-NS-NS14 | Filters / Other | 19 xrefs from BECK/ARNLEY, BOSCH +11 more13 mfgs·56 OEM xrefs |
| 21-NS-NS15 | Filters / Other | 11 xrefs from BOSCH, CHAMPION +9 more11 mfgs·40 OEM xrefs |
| 21-NS-NS17 | Filters / Other | 18 xrefs from BALDWIN, BECK/ARNLEY +14 more16 mfgs·66 OEM xrefs |
