Skip to product information
1 2 Inch NPT Temp Sender Temperature Sensor for MerCruiser 97258A1 171960 18-5898

1 2 Inch NPT Temp Sender Temperature Sensor for MerCruiser 97258A1 171960 18-5898

Write Review

Your Source for Aftermarket Parts

$30.79
Sale price  $30.79 Regular price 

Available to Order

Usually ships in 2–4 business days.
This 1/2" NPT Temp Sender/Temperature Sensor is a replacement temperature sender compatible with MerCruiser engines and matches OEM Part Numbers 97258A1, 171960, and 18-5898.
Industrial Retailer parts support representative

Need help finding the right part? Talk with a parts expert today.

Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT

Live Chat: Available 24/7

Call us

I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.

Randy W. — Verified customer

Product Overview

The 1/2" NPT Temperature Sensor is designed to monitor engine coolant temperature in MerCruiser marine engines. It sends a signal to the gauge or control system for accurate temperature readings. This sensor is a direct replacement for OEM units.

Key Features & Performance

  • 1/2" NPT thread for easy installation
  • Direct replacement for MerCruiser part numbers 97258A1, 171960, 18-5898
  • Accurate temperature sensing for engine monitoring
  • Corrosion-resistant construction for marine use
  • Compatible with standard gauge systems

Fitment & Compatibility

  • Compatible with MerCruiser engines that use OEM temperature sender part numbers 97258A1, 171960, 18-5898

Common Uses

  • Monitor engine coolant temperature
  • Replace faulty temperature sender in MerCruiser engines
  • Used in boat maintenance for engine diagnostics
  • Ideal for repowering or engine upgrades

Technical Specifications

  • Part Number(s): 97258A1, 171960, 18-5898
  • Thread Size: 1/2" NPT
  • Product Type: Temperature Sender / Sensor
  • Application: Marine Engine Cooling System

Frequently Asked Questions

Q: Will this temperature sensor work with my MerCruiser engine? A: It is designed for MerCruiser engines that use OEM part numbers 97258A1, 171960, or 18-5898. Check your existing part number to confirm compatibility.

Q: What is the thread size of this sensor? A: The sensor has a 1/2" NPT thread, which is standard for many marine temperature senders.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.

Customers also purchased

Keywords (Used as search references only) View IP policy.