Coolant Temp Sensor 805218T – MerCruiser EFI/MPI

Coolant Temp Sensor 805218T – MerCruiser EFI/MPI

Vendor: JLM Marine
Availability: In Stock
Product Type: Sensor
$55.77
$55.77
Subtotal: $55.77

Бесплатная доставка

Бесплатная стандартная доставка для всех заказов весом до 1 кг.

Возврат без проблем

Узнать больше.
Coolant Temp Sensor 805218T – MerCruiser EFI/MPI

Coolant Temp Sensor 805218T – MerCruiser EFI/MPI

$55.77
Описание

How to Match This Part

This aftermarket engine coolant temperature sensor replaces Mercury MerCruiser / Quicksilver 805218T (and the earlier number 805218). It is a threaded, two-wire coolant-temperature gauge sender for MerCruiser EFI / MPI sterndrive and inboard engines that need coolant-temperature feedback at the helm gauge or monitoring circuit.

Match this part in this order:
1. OEM or aftermarket number on the removed sensor — 805218T / 805218, Sierra 18-7600, or Mallory 9-42402
2. Engine family and serial — MerCruiser MCM / MIE EFI and MPI applications that call for 805218T in the parts diagram (including verified 4.3L MPI, 350 MAG MPI, 5.0L MPI, and MX 6.2L MPI serial bands below)
3. Physical form — threaded probe-style body with hex flats, molded two-wire plug, and the mating pigtail shown in the product images

Compare thread, probe length, and connector shape with the original part and the product images before ordering. Do not confuse this coolant-temperature sender with MerCruiser intake-air (IAT) sensors such as 805223T — those are separate listings.

Part Number Cross-Reference

Use these verified numbers to confirm you have the correct coolant temperature sensor. Brand names and OEM numbers are for identification only.

Type Brand Part Number Notes
OEM Mercury MerCruiser / Quicksilver 805218T Primary reference — coolant temperature gauge sender
OEM Mercury MerCruiser 805218 Earlier number; functionally replaced by 805218T
Aftermarket Sierra Marine 18-7600 Direct cross-reference for MCM / MIE EFI
Aftermarket Mallory Marine 9-42402 Direct cross-reference

This is an aftermarket part manufactured by JLM Marine. It is not sold as a genuine Mercury, MerCruiser, or Quicksilver component.

Compatible Engine Models

Confirm your engine before ordering. Serial location guide: Mercury Parts Diagrams. Always match the OEM number and physical form of the sensor you remove. On verified MerCruiser 4.3L MPI applications, this sensor mounts in the thermostat-housing assembly.

Brand Engine Model Serial Number Range Notes
MerCruiser 4.3L MPI Alpha / Bravo 0M300000–0M614999 805218T shown in thermostat-housing diagram
MerCruiser 350 MAG MPI Alpha / Bravo & Horizon Alpha / Bravo 0M300000–0M599999 Where-used for 805218 → 805218T
MerCruiser 5.0L MPI Alpha / Bravo 0M300000–0M599999 Where-used for 805218 → 805218T
MerCruiser MX 6.2L MPI Bravo & Horizon Bravo 0M300000–0M599999 Where-used for 805218 → 805218T
MerCruiser 350 MAG MPI MIE / Horizon MIE 0M310000–0W389999 (banded) Confirm serial band on engine ID plate
MerCruiser MX 6.2L MPI MIE / Horizon MIE 0M310000–0W389999 (banded) Confirm serial band on engine ID plate
MerCruiser 383 MAG Stroker Inboard 1G300000 & Up Where-used for 805218 → 805218T

Mercury also specifies this sender for MerCruiser EFI sterndrive and inboard applications generally. If your serial range is outside the rows above, order only when the engine parts diagram or the removed sensor shows 805218T / 805218.

Technical Specifications

Specification Value
Part type Engine coolant temperature gauge sender / sensor
Primary OEM 805218T (replaces 805218)
Electrical connection 2-wire plug-in with mating pigtail (as shown)
Body form Threaded probe with hex wrench flats
Verified MerCruiser mount Thermostat housing (4.3L MPI diagram)
Application class MerCruiser EFI / MPI sterndrive and inboard (MCM / MIE)

Package Contents

  • 1 × threaded engine coolant temperature sensor
  • 1 × two-wire mating connector pigtail, as shown in the product images

Reuse or replace any engine-side sealing compounds or retainers only as specified in the applicable MerCruiser service manual.

Installation Guide

  1. 1 Allow the engine to cool completely. Disconnect the negative battery cable and relieve cooling-system pressure per the service manual.
  2. 2 Locate the existing coolant temperature sensor. On verified MerCruiser 4.3L MPI applications it is installed in the thermostat-housing assembly.
  3. 3 Release the electrical connector without pulling on the wires. If the supplied pigtail is required, splice only with marine-grade sealed connections and preserve original circuit positions.
  4. 4 Remove the old sensor and compare part number, thread, probe length, and connector shape with the replacement before installation.
  5. 5 Install the replacement using the tightening method and torque in your MerCruiser service manual. Do not overtighten into aluminum bosses or allow sealant to cover the sensing tip.
  6. 6 Reconnect wiring and battery, restore coolant as required, inspect for leaks, and verify a plausible temperature reading as the engine warms.

Note: Professional installation is recommended for EFI / MPI coolant-temperature sensors.

Troubleshooting & FAQ

How do I confirm this fits my MerCruiser? +

Read the number on your existing sensor first. If it is 805218T, 805218, Sierra 18-7600, or Mallory 9-42402, this is the correct coolant-temperature replacement for the MerCruiser EFI / MPI applications listed above. Then verify serial range in the parts diagram and compare the connector with the product images.

Is this the same as an intake air temperature (IAT) sensor? +

No. This listing is an engine coolant temperature gauge sender for the cooling system. MerCruiser IAT / air-charge sensors (for example 805223T) mount in the intake-air path and use different part numbers — order the listing that matches the number on your removed sensor.

Why does my diagram also show a separate temperature sender? +

Some EFI / MPI thermostat-housing diagrams list both this two-wire sensor and a separate one-wire or stud-terminal sender for related circuits. Do not substitute one for the other; order by the exact part number shown for your serial range.

Is this an OEM or aftermarket part? +

This is an aftermarket replacement manufactured by JLM Marine. It is not a genuine Mercury, MerCruiser, or Quicksilver part. OEM and aftermarket numbers are listed only for cross-matching.

What should I check if the temperature reading is still incorrect? +

Inspect the two-wire connector, sealed splices, engine ground, coolant level, thermostat operation, and related harness faults. Use the MerCruiser service manual for circuit tests; do not diagnose the sensor from appearance alone.

Why Choose JLM MARINE?

  • Precision Fit: Cross-referenced to Mercury MerCruiser / Quicksilver 805218T for the MerCruiser EFI / MPI applications listed above.
  • Quality Control: Each batch is inspected for dimensional consistency and workmanship.
  • Direct from Manufacturer: Aftermarket marine sensors engineered for reliable coolant-temperature feedback on MerCruiser EFI / MPI systems.
Перевозки

Мы осуществляем доставку практически по любому адресу в мире, при этом для большинства регионов доступна бесплатная доставка.

Для наших типичных клиентов из США и Канады сроки доставки следующие:

  • Amazon FBA : заказы будут доставлены в течение 1–5 рабочих дней после размещения заказа (в определенные особые периоды, такие как крупные акции, Рождество и т. д., время доставки Amazon FBA может быть изменено).
  • Доставка со склада в США : заказы будут доставлены в течение 7 дней после размещения заказа.
  • Доставка со склада в Китае : заказы будут доставлены примерно через 12 дней после размещения заказа.

Когда вы размещаете заказ, мы оценим даты отправки и доставки для вас на основе доступности ваших товаров и выбранных вами вариантов доставки. В зависимости от выбранного вами поставщика услуг доставки, предполагаемые даты доставки могут отображаться на странице расценок на доставку.

Также обратите внимание, что стоимость доставки многих товаров, которые мы продаем, основана на весе. Вес любого такого товара можно найти на странице с его подробностями. Чтобы отразить политику транспортных компаний, с которыми мы работаем, все веса будут округлены до следующего целого фунта.

О компании JLM Marine

Основанная в 2002 году, компания JLM Marine зарекомендовала себя как специализированный производитель высококачественных морских деталей, базирующийся в Китае. Наша приверженность совершенству в производстве заслужила нам доверие ведущих мировых морских брендов.

Как прямой поставщик, мы обходим посредников, что позволяет нам предлагать конкурентоспособные цены без ущерба качеству. Такой подход не только поддерживает экономическую эффективность, но и гарантирует, что наши клиенты получают наилучшую ценность напрямую от источника.

Мы рады расширить свое присутствие через розничные каналы, предлагая наш опыт и приверженность качеству непосредственно владельцам и любителям лодок по всему миру.

Parts Finder

Use our Parts Finder to quickly locate the correct parts for your engine. Search by Make, HP, Stroke, Model, Year, and SN. Select only the fields available — you don’t need to fill all options (e.g., leave Year blank if not applicable).

Our database is currently being updated and expanded. More models, including Yamaha, Mercury, and Suzuki, are being verified and uploaded.
Search
Add to garage

Сопутствующие товары

 
 
 
 
 
 

Недавно просмотренные продукты