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Engine Coolant Thermostat - Mack & Volvo Engines - 20560249 20463750 840.THS18201.82
Engine Coolant Thermostat - Mack & Volvo Engines - 20560249 20463750 840.THS18201.82
Calorstat

Engine Coolant Thermostat - Mack & Volvo Engines - 20560249 20463750 840.THS18201.82

In stock
SKU: 840.THS18201.82
$29.16
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Fitment

Fits these trucks

Mack and Volvo enginesEngine cooling system - coolant thermostatMack 20463750 / 20560249 / 21237213 / 21264664 / 21412639 family
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

5 cross-refs
Mack 20463750 Mack 20560249 Mack 21237213 Mack 21264664 Mack 21412639
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

Get engine temperature back under control with this OE-grade Engine Coolant Thermostat distributed by FleetPro Parts & Tires. Manufactured by Calorstat, it serves Mack and Volvo engine cooling systems and replaces an entire family of Mack numbers with one part. A thermostat is a small component that decides whether the engine warms up, holds temperature, or cooks itself: stuck shut it overheats and can take the head gasket with it, stuck open it runs cold, kills the cab heat and quietly costs you fuel every mile. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

Temperature Under Control: The OE Engine Coolant Thermostat Advantage

Everything downstream of the thermostat depends on it being right. The water pump, the radiator, the fan clutch and the ECU's fan strategy all assume the engine reaches and holds its designed operating temperature, and a thermostat that sticks, drifts or opens lazily undermines every one of them. This is a Calorstat unit built to OE grade, the same class of part the engine was assembled with, rather than a discount substitute you will be back under the hood for.

One part number also covers a lot of ground here. This thermostat crosses the Mack 20463750 / 20560249 / 21237213 / 21264664 / 21412639 family and applies across both Mack and Volvo engine cooling systems, which is exactly the kind of consolidation that keeps a shop shelf sane instead of stocking five near-identical boxes for the same job.

At FleetPro Parts & Tires, we would rather you replace the thermostat once and correctly. This unit is a direct replacement for highly searched industry numbers including Mack 20560249, 20463750, 21237213, 21264664 and 21412639. Refill and bleed the cooling system properly after the swap, because an air pocket sitting behind a new thermostat reads exactly like a bad one.

Vehicle Fitment & Compatibility

This OE-grade thermostat is intended for the following commercial applications:

  • Make/Model: Mack and Volvo engines
  • System: Engine cooling system
  • Number Family: Mack 20463750 / 20560249 / 21237213 / 21264664 / 21412639
  • Component Group: Cooling System / Water Pumps & Thermostats

Direct Replacement & Cross-Reference Numbers:

This Calorstat engine coolant thermostat serves as a direct replacement for the following part numbers:

  • Mack Interchange: 20463750, 20560249, 21237213, 21264664, 21412639
  • Automann Distributor #: 840.THS18201.82

Technical Specifications

  • Component Type: Engine Coolant Thermostat
  • Application: Mack and Volvo engine cooling systems
  • OEM Reference: Mack 20560249
  • Grade: OE
  • Warranty: 1-Year FleetPro Warranty
  • Product Level: OEM
  • Brand: Calorstat (Distributed by FleetPro Parts & Tires)
Key features
  • OE-Grade Calorstat Build: Manufactured by Calorstat to OE grade rather than to a price point, which is what you want in the one part the whole cooling system keys off.
  • Wide Mack Interchange: Covers the Mack 20463750, 20560249, 21237213, 21264664 and 21412639 family under a single part number.
  • Mack and Volvo Coverage: Serves both Mack and Volvo engine cooling systems, so one shelf slot covers both sides of a mixed fleet.
  • Small Part, Big Consequence: Stuck shut a thermostat cooks the engine, stuck open it leaves the cab cold and the engine running below temperature, so this is not the place to gamble.
  • Backed by FleetPro: A new OEM-level part covered by the 1-Year FleetPro Warranty and shipped from our Illinois warehouse.
Specifications
Component Type
Engine Coolant Thermostat
Application
Mack and Volvo engine cooling systems
OEM Reference
Mack 20560249
Grade
OE
Warranty
1-Year FleetPro Warranty
UPC
889626895210
Product Level
OEM
Questions
Will this fit my truck?
This part fits Mack and Volvo engines, Engine cooling system - coolant thermostat, Mack 20463750 / 20560249 / 21237213 / 21264664 / 21412639 family. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with Mack 20463750, Mack 20560249, Mack 21237213, Mack 21264664, Mack 21412639.
How fast does it ship?
In-stock orders placed before 12 PM Central on business days ship the same day from our Hanover Park, IL warehouse, and typically arrive in 2 to 5 business days anywhere in the USA.
What's your return policy?
Unused items in original packaging can be returned within 30 days, backed by our 30-day money-back guarantee. If we ship the wrong part, we cover the return label and send the correct one.