Spark Plug Specifications
| Model No. | Plug Gap | |
| Standard | PFR5G-11 | 0.039-0.043 Plug gap is preset and adjusting is not required |
| Service optional | PFR4G-11, PFR6G-11 | 0.039-0.043 Plug gap is preset and adjusting is not required |
| Model No. | Plug Gap | |
| Standard | PFR5G-11 | 0.039-0.043 Plug gap is preset and adjusting is not required |
| Service optional | PFR4G-11, PFR6G-11 | 0.039-0.043 Plug gap is preset and adjusting is not required |