Gap
| Model No. | Plug Air Gap |
| NGK BP6ES-11, BPR6ES-11 | .039 - .043 Inch (in) |
| Nippon Denso W20EPR-U10, W20EP-U10 | .039 - .043 Inch (in) |
| Model No. | Plug Air Gap |
| NGK BP6ES-11, BPR6ES-11 | .039 - .043 Inch (in) |
| Nippon Denso W20EPR-U10, W20EP-U10 | .039 - .043 Inch (in) |