7Y3918 Switch Group-Heat Start fit Caterpillar
7Y3918 Switch Group-Heat Start fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
Switch Group-Heat Start 7Y3918
The Switch Group-Heat Start 7Y3918 is an ignition switch assembly for Caterpillar equipment. It is used on Caterpillar engine-machine applications and Caterpillar excavators, including the listed 3046, 3054, 3064, 3066, 3126B, C6.4, 307, 307B, 307C, and 308C models. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).
Fitment
The switch group is specified for the following Caterpillar equipment and engine applications:
- Caterpillar 3046
- Caterpillar 3054
- Caterpillar 3064
- Caterpillar 3066
- Caterpillar 3126B
- Caterpillar C6.4
- Caterpillar 307
- Caterpillar 307B
- Caterpillar 307C
- Caterpillar 308C
The supplied fitment information identifies the part for Caterpillar engine-machine applications and Caterpillar excavator models. Compatibility should be checked against the machine model, serial number, and the installed switch configuration before installation.
Cross-reference numbers
- 7Y-3918
- 7Y3918
7Y-3918 and 7Y3918 are two written formats for the same equipment part number. The product SKU is 7Y3918.
Specifications
| Part type | Ignition switch group |
| Switch function | Heat start |
| Equipment manufacturer | Caterpillar |
| Connector type | 6-screw terminal |
| Diameter | 2.2 in |
| Weight | 0.8 lb |
| Length | 10 cm |
| Width | 6 cm |
| Depth | 6 cm |
| SKU | 7Y3918 |
The component is supplied as a switch group with a six-screw terminal connection. The listed dimensions and weight refer to the product specification: diameter 2.2 inches, weight 0.8 pounds, length 10 cm, width 6 cm, and depth 6 cm.

























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