What engines is this coolant temp sensor compatible with?

It serves as a reliable replacement for various outboard and inboard marine engines requiring a standard coolant temperature sensor, matching common OEM footprints.

How do I know if my coolant temp sensor is failing?

Look for symptoms like fluctuating gauge readings, engine overheating warnings, or activation of limp mode without apparent blockages in the cooling system.

Is installation DIY-friendly?

Yes, for most users with basic tools. It typically involves draining coolant, unplugging the old sensor, and screwing in the new one—usually under 30 minutes.

Does this sensor work in saltwater environments?

Absolutely. It's built with corrosion-resistant materials to handle the demands of brackish and saltwater exposure common in boating.

Will this sensor improve my engine's performance?

By providing accurate data, it enables optimal ECU adjustments, potentially leading to smoother operation, better efficiency, and reduced risk of damage from overheating.

How often should I replace the coolant temp sensor?

Every 3-5 years or at the first sign of trouble, especially in high-use or saltwater boats. Proactive swaps during cooling system flushes extend reliability.

Can a bad sensor cause engine damage?

Yes, indirectly. Faulty readings might prevent timely overheating detection, risking warped heads or seized components if ignored.

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home > Sierra 18-7600 805218T Coolant Temp Sensor > Sierra 18-7600 805218T Coolant Temp Sensor

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Sierra 18-7600 805218T Coolant Temp SensorPrecision Monitoring for Optimal Engine Performance Keep your marine engine running at peak efficiency with this reliable coolant temperature sensor. Designed as a direct fit replacement, it delivers accurate readings to help prevent overheating and ensure smooth operation during long days on the water. Whether you're cruising coastal waters or tackling rough offshore conditions, this sensor provides the dependable data your engine control system

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Precision Monitoring for Optimal Engine Performance

Keep your marine engine running at peak efficiency with this reliable coolant temperature sensor. Designed as a direct-fit replacement, it delivers accurate readings to help prevent overheating and ensure smooth operation during long days on the water. Whether you're cruising coastal waters or tackling rough offshore conditions, this sensor provides the dependable data your engine control system needs.

Engineered for seamless integration with popular outboard and sterndrive setups.
Constructed from durable materials to withstand corrosive saltwater environments.
Fast response time for real-time temperature monitoring.
Helps maintain proper cooling system function, extending engine life.

Why This Sensor Makes a Difference on the Water

A failing coolant temp sensor can lead to erratic gauge readings, warning lights, or even engine shutdowns—scenarios no boater wants mid-trip. This high-quality replacement restores precise temperature feedback, allowing your engine's ECU to adjust fuel mixtures and ignition timing accurately. Boat owners report fewer unexpected issues and better fuel economy after installation, making it a smart upgrade for preventative maintenance.

Unlike stock parts that wear out quickly in harsh marine conditions, this sensor features enhanced resistance to vibration and thermal cycling, ensuring longevity season after season.

Easy Fit for Common Marine Applications

This sensor matches the specifications of widely used OEM designs, sliding into place without modifications. It's a go-to choice for mechanics and DIY enthusiasts working on various powerheads and manifolds where coolant flow monitoring is critical.

Quick Installation Tips

Drain the cooling system to avoid spills.
Disconnect the wiring harness carefully to prevent damage.
Thread the new sensor in by hand first, then torque to spec.
Refill coolant, bleed air, and test for leaks before firing up.

Always consult your engine manual for torque values and procedures to match your setup perfectly.

Spotting Issues Early: Signs Your Sensor Needs Attention

Stay ahead of problems by watching for these common symptoms:

Inaccurate dashboard temperature display.
Engine running too hot or too cool consistently.
Check engine light triggered without other obvious faults.
Poor performance or hesitation under load.

Regular inspections during routine servicing can catch wear before it escalates. Pair this sensor with fresh coolant and clean heat exchangers for top-tier cooling performance.

Frequently Asked Questions

805218T Coolant Temp Sensor

SKU: NVN-4003047
MPN: 18-7600
UPC: 030999977076

Sierra 18-7600 805218T Coolant Temp Sensor

Name: Sierra 18-7600 805218T Coolant Temp Sensor
Brand: yvanlemoine-films.com
SKU: 11690836163
Price: 46.99 USD
Availability: InStock
Rating: 4.1863 (2427 reviews)