| W20ESR-L11 | Ignition / Spark Plugs | 4 xrefs from BOSCH, DENSO +1 more3 mfgs |
| W20ESR-U | Ignition / Spark Plugs | 40 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs |
| W20ES-U | Ignition / Spark Plugs | 29 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·2 OEM xrefs |
| W20ES-U11 | Ignition / Spark Plugs | 5 xrefs from BOSCH, DENSO +1 more3 mfgs |
| W20ES-ZU | Ignition / Spark Plugs | 29 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·2 OEM xrefs |
| W20ETR-L | Ignition / Spark Plugs | 4 xrefs from DENSO, NGK2 mfgs |
| W20ETR-L8 | Ignition / Spark Plugs | 4 xrefs from DENSO, NGK2 mfgs |
| W20EXR-U | Ignition / Spark Plugs | 6 xrefs from DENSO, MOTORCRAFT +1 more3 mfgs·1 OEM xrefs |
| W20EXR-U11 | Ignition / Spark Plugs | 3 xrefs from DENSO, NGK2 mfgs |
| W20EXR-U13 | Ignition / Spark Plugs | 10 xrefs from AUTOLITE, CHAMPION +2 more4 mfgs |
| W20EXR-ZU | Ignition / Spark Plugs | 38 xrefs from AUTOLITE, BOSCH +3 more5 mfgs·2 OEM xrefs |
| W20EX-U | Ignition / Spark Plugs | 41 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·6 OEM xrefs |
| W20EX-U11 | Ignition / Spark Plugs | 16 xrefs from BOSCH, CHAMPION +3 more5 mfgs |
| W20EX-U13 | Ignition / Spark Plugs | 16 xrefs from BOSCH, CHAMPION +3 more5 mfgs |
| W20EX-ZU | Ignition / Spark Plugs | 38 xrefs from AUTOLITE, BOSCH +3 more5 mfgs·2 OEM xrefs |
| W20FP | Ignition / Spark Plugs | 31 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·1 OEM xrefs |
| W20FP-L | Ignition / Spark Plugs | 3 xrefs from DENSO, NGK2 mfgs |
| W20FPR | Ignition / Spark Plugs | 32 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·5 OEM xrefs |
| W20FPR-L | Ignition / Spark Plugs | 3 xrefs from DENSO, NGK2 mfgs |
| W20FPR-U | Ignition / Spark Plugs | 32 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·5 OEM xrefs |
| W20FPR-U10 | Ignition / Spark Plugs | 3 xrefs from DENSO, NGK2 mfgs |
| W20FPR-UL10 | Ignition / Spark Plugs | 3 xrefs from DENSO, NGK2 mfgs |
| W20FPR-ZU | Ignition / Spark Plugs | 4 xrefs from AUTOLITE, BOSCH +2 more4 mfgs·3 OEM xrefs |
| W20FP-U | Ignition / Spark Plugs | 31 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·1 OEM xrefs |
| W20FPU10 | Ignition / Spark Plugs | 4 xrefs from DENSO, NGK2 mfgs |
| W20FRL | Ignition / Spark Plugs | 3 xrefs from CHAMPION, DENSO +1 more3 mfgs |
| W20FS | Ignition / Spark Plugs | 37 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·1 OEM xrefs |
| W20FS-GU | Ignition / Spark Plugs | 9 xrefs from AUTOLITE, BOSCH +3 more5 mfgs |
| W20FSR | Ignition / Spark Plugs | 26 xrefs from ACDELCO, AUTOLITE +4 more6 mfgs·2 OEM xrefs |
| W20FSRU | Ignition / Spark Plugs | 26 xrefs from ACDELCO, AUTOLITE +4 more6 mfgs·2 OEM xrefs |
| W20FS-U | Ignition / Spark Plugs | 37 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·1 OEM xrefs |
| W20FS-ZU | Ignition / Spark Plugs | 9 xrefs from AUTOLITE, BOSCH +3 more5 mfgs |
| W20M | Ignition / Spark Plugs | 21 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·5 OEM xrefs |
| W20MPRU | Ignition / Spark Plugs | 9 xrefs from AUTOLITE, BOSCH +3 more5 mfgs·3 OEM xrefs |
| W20MPRU10 | Ignition / Spark Plugs | 1 xrefs from NGK1 mfg |
| W20MPU | Ignition / Spark Plugs | 9 xrefs from AUTOLITE, BOSCH +3 more5 mfgs·3 OEM xrefs |
| W20MPU10 | Ignition / Spark Plugs | 4 xrefs from DENSO, NGK2 mfgs |
| W20MR-U | Ignition / Spark Plugs | 13 xrefs from ACDELCO, AUTOLITE +4 more6 mfgs·4 OEM xrefs |
| W20M-U | Ignition / Spark Plugs | 13 xrefs from ACDELCO, AUTOLITE +4 more6 mfgs·4 OEM xrefs |
| W20M-US | Ignition / Spark Plugs | 21 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·5 OEM xrefs |
| W20PR-U | Ignition / Spark Plugs | 58 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·3 OEM xrefs |
| W20P-U | Ignition / Spark Plugs | 15 xrefs from ACDELCO, AUTOLITE +4 more6 mfgs·1 OEM xrefs |
| W20S | Ignition / Spark Plugs | 56 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·5 OEM xrefs |
| W20SR-U | Ignition / Spark Plugs | 58 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·3 OEM xrefs |
| W20S-U | Ignition / Spark Plugs | 56 xrefs from ACDELCO, AUTOLITE +5 more7 mfgs·5 OEM xrefs |
| W21ES-L11 | Ignition / Spark Plugs | 4 xrefs from DENSO, NGK2 mfgs |
| W21ESR-L11 | Ignition / Spark Plugs | 4 xrefs from DENSO, NGK2 mfgs |
| W22EA | Ignition / Spark Plugs | 9 xrefs from DENSO, MOTORCRAFT +1 more3 mfgs |
| W22EB | Ignition / Spark Plugs | 9 xrefs from DENSO, MOTORCRAFT +1 more3 mfgs |
| W22EBR | Ignition / Spark Plugs | 9 xrefs from DENSO, MOTORCRAFT +1 more3 mfgs |
