- 4" FNPT X 2.5" MNST RL ALUM ADPTR AHA40T25F
| Male Thread Size | 2 1/2 in |
| Female Thread | NPT |
| Type | Female Thread x Male Thread |
| Male Thread | NST (NH) |
| Material | Hardcoat Aluminum |
| Female Thread Size | 4 in |
| Lug | Rocker Lug |
| Weight | 2.43 LB |
| Male Thread Size | 2 1/2 in |
| Female Thread | NPT |
| Type | Female Thread x Male Thread |
| Male Thread | NST (NH) |
| Material | Hardcoat Aluminum |
| Female Thread Size | 4 in |
| Lug | Rocker Lug |
| Weight | 2.43 LB |