Tip: Use a crescent type wrench at the square nut to hold it so it and the clamp do not twist when tightening. Then after a few heat cycles repeat. Also, if the bent tabs that are on the clamp are crooked, you may have to straighten them out. You may have to reinstall these clamps multiple times until you get a good fitment. Also, the GM AIM makes not of using a sealer inside the heater hoses when using Tower Clamps. You can run a bead of Permatex inside the hose.
| Make | Model | Years |
| Chevrolet | Blazer | 1969 - 1974 |
| Chevrolet | C10 Pickup | 1969 - 1974 |
| Chevrolet | C10 Suburban | 1969 - 1976 |
| Chevrolet | C10 | 1975 - 1976 |
| Chevrolet | C20 Pickup | 1969 - 1974 |
| Chevrolet | C20 Suburban | 1969 - 1976 |
| Chevrolet | C20 | 1975 - 1976 |
| Chevrolet | C30 Pickup | 1969 - 1974 |
| Chevrolet | C30 | 1975 - 1976 |
| Chevrolet | K10 Pickup | 1969 - 1974 |
| Chevrolet | K10 Suburban | 1969 - 1976 |
| Chevrolet | K10 | 1975 - 1976 |
| Chevrolet | K20 Pickup | 1969 - 1974 |
| Chevrolet | K20 Suburban | 1969 - 1976 |
| Chevrolet | K20 | 1975 - 1976 |
| Chevrolet | K30 Pickup | 1969 - 1974 |
| Chevrolet | K5 Blazer | 1975 - 1976 |
| Chevrolet | LUV | 1975 - 1976 |
| Chevrolet | Luv Pickup | 1972 - 1974 |
| Chevrolet | Truck | 1960 |
| GMC | C15 Suburban | 1975 - 1976 |
| GMC | C15/C1500 Pickup | 1969 - 1974 |
| GMC | C15/C1500 Suburban | 1969 - 1974 |
| GMC | C15 | 1975 - 1976 |
| GMC | C25 Suburban | 1975 - 1976 |
| GMC | C25/C2500 Pickup | 1969 - 1974 |
| GMC | C25/C2500 Suburban | 1969 - 1974 |
| GMC | C25 | 1975 - 1976 |
| GMC | C35/C3500 Pickup | 1969 - 1974 |
| GMC | C35 | 1975 - 1976 |
| GMC | Jimmy | 1970 - 1976 |
| GMC | K15 Suburban | 1975 - 1976 |
| GMC | K15/K1500 Pickup | 1969 - 1974 |
| GMC | K15/K1500 Suburban | 1969 - 1974 |
| GMC | K15 | 1975 - 1976 |
| GMC | K25 Suburban | 1975 - 1976 |
| GMC | K25/K2500 Pickup | 1969 - 1974 |
| GMC | K25/K2500 Suburban | 1969 - 1974 |
| GMC | K25 | 1975 - 1976 |
| GMC | K35/K3500 Pickup | 1969 - 1974 |
| GMC | Transmode | 1973 - 1974 |
