3MT275M | Mack Water Temperature Gauge | OEM 25159920 | New Genuine NOS

New Genuine Mack 3MT275M (New Genuine NOS) — OEM water temperature gauge designed to provide accurate engine coolant temperature monitoring in compatible Mack truck dashboard and instrument cluster applications. Cross-referenced with OEM part number 25159920 for direct replacement or factory gauge restoration.

In stock and ready to ship from Discount Parts Exchange (DPX) in Mansfield, Ohio.

Call to confirm availability: 419-522-3320

Key Specifications

• Part Number: 3MT275M
• Manufacturer: Mack
• Type / Model: Water Temperature Gauge
• System: Instrumentation / Engine Cooling Monitor
• Function: Monitors engine coolant temperature through compatible Mack instrument systems
• Condition: New Genuine (NOS)
• Warranty: Sold As-Is, No Warranty
• Alternate Part Number: 25159920
• Gauge Type: Engine coolant temperature gauge

Applications & Fitment

Fits select Mack truck dashboard and instrument cluster applications requiring water temperature gauge 3MT275M or OEM reference 25159920.

• Mack heavy-duty truck dashboards
• Mack instrument cluster replacement applications
• Engine coolant temperature monitoring systems
• Factory gauge restoration and service applications

Important: Always verify part number, gauge dimensions, electrical connector style, dash layout, and cluster compatibility before ordering or installation.

What’s Included

• 1 × Mack Water Temperature Gauge – 3MT275M / 25159920
• OEM temperature gauge as supplied
• Mounting hardware / fittings not included unless noted

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Shipping / Location

• Ships from our Mansfield, Ohio warehouse (419-522-3320)
• Parcel shipping available
• Warehouse Bin Location: DPX_OH_BR549_MACK

Heavy-Duty Solutions — Built to Perform. Trusted to Last. Discount Parts Exchange (DPX).