Caterpillar CT91207-01400 Brass 1/8 NPT Automotive Oil Pressure Switch
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The Caterpillar CT91207-01400 (also labeled TSA/CT91207-01400) is a new OEM automotive oil pressure switch designed for use on Caterpillar engines and equipment requiring low-pressure oil circuit monitoring. The switch features a brass diaphragm-type sensing body with a cream-colored thermoplastic electrical housing, two screw-terminal connections for wire leads, and a male 1/8 in NPT threaded brass fitting for direct installation into an oil gallery port. The body is stamped with part code 78305-40 and carries a UL Listing mark (File 378N) for Automotive Oil Pressure Switch, confirming compliance with UL 508 / automotive switching standards; rated voltage visible on the body reads 24V DC at 3A. This switch operates as a normally-open (NO) diaphragm-actuated contact that closes upon reaching the calibrated set-point pressure, providing a signal to an oil pressure warning or control circuit; it is supplied new-in-box as a direct OEM replacement for Caterpillar applications.
Product Specifications
| Manufacturer Part Number | CT91207-01400 |
| Full Part Number (Box Label) | TSA/CT91207-01400 |
| Body Stamp Code | 78305-40 |
| Switch Type | Diaphragm-actuated pressure switch |
| Contact Configuration | Normally Open (NO) |
| Port Connection | 1/8 in NPT male, brass |
| Body Material | Brass |
| Electrical Housing Material | Thermoplastic (cream) |
| Electrical Connection | 2x screw terminals |
| Rated Voltage | 24V DC |
| Rated Current | 3A |
| UL Listing | UL File 378N, Automotive Oil Pressure Switch |
| Condition | New |
| Application | Caterpillar engines/equipment, oil pressure circuit |