eBay Description:
Genuine factory original equipment VDO heavy-duty engine fluid temperature sender assembly (Model / MPN: 323-420). Engineered to rigorous automotive and industrial performance standards, this premium mechanical sensor safeguards your engine tracking networks by providing highly accurate coolant and oil monitoring for automotive, marine, and industrial instrumentation panels. It converts system fluid temperature directly into a matching 287.4 to 22.7 Ohm analog signaling curve across a wide 6V–24V operating architecture, transmitting real-time thermal diagnostics directly to your compatible full-sweep VDO gauge cluster. Encased in a rugged brass housing, this precision engine monitoring component ensures long-term operational durability and eliminates erratic readouts, protecting your high-performance engine block or intake manifold configuration from undetected overheating conditions under heavy runtime loads.

• Key Features: High-precision variable resistance ohm-based technology, robust solid brass housing construction, space-saving compact form factor, and standard case grounding path.
• Technical Specs: Brand: VDO Instruments | Part Number / MPN: 323-420 | Maximum Temperature: 250°F / 120°C | Thread Profile: 1/4"-18 NPTF Tapered Thread | Resistance Range: 287.4Ω - 22.7Ω | Voltage: 6V - 24V DC | Connection Type: .250" Male Spade Terminal | Ground Type: Standard Case Ground.
• Condition Notes: This item is in new, original factory retail condition. The outer factory box or blue VDO retail packaging may exhibit minor handling scuffs, shelf storage wear, or small warehouse blemishes, but the brass sending unit itself is physically flawless with perfectly clean threads, an unblemished male spade terminal, and zero mechanical or cosmetic defects.
• Installation Notes: Screw the tapered 1/4"-18 NPTF threaded base directly into any compatible engine block coolant passage or sender boss. Because VDO tapered threads are engineered to provide an autonomous mechanical seal, do not apply Teflon tape or liquid pipe sealant, as excessive insulating sealants will interfere with the standard case-to-engine ground path and cause incorrect instrument readings. Slide your gauge wiring link firmly onto the integrated .250" male spade connector, ensure all wiring stays clear of intense exhaust heat sources, and run your engine to check for fluid leaks around the hex seating before field operation. Message with any questions!