How do I know a part fits my truck?

Every listing shows the truck make, model years, side (left/right) and OEM cross-reference numbers. Match any of your OEM numbers to the listing, or send us your number and we will confirm fitment.

Do you ship the same day?

Orders placed before 12PM Central on business days ship the same day from our US warehouse. Transit is typically 2–5 business days depending on your state.

What is your return policy?

30-day returns on unused parts in original packaging. Wrong part shipped by us? We cover the return label and ship the correct one first.

Do you offer fleet or shop pricing?

Yes. Business accounts get tiered pricing, saved reorders and a dedicated line. Open a business account to see your pricing and order online.

Are these OEM or aftermarket parts?

We sell quality aftermarket parts cross-referenced to OEM numbers, plus select OEM-grade lines. Brand and grade are shown on every listing.

Can I order by part number?

Yes — type any part number or OEM cross reference into the search bar. If it is not listed, send it to us and we will source it.

Engine Coolant Thermostat, Mack & Volvo (20560249)

OE-grade engine coolant thermostat. Ships from our Illinois warehouse.

Engine Coolant Thermostat

Brand
- Calorstat
Quality Tier
- OEM
OEM Reference
- Mack 20560249
Condition
- New
Warranty
- 1-Year FleetPro Warranty

Wholesale pricing for approved accounts

Open a FleetPro business account to see fleet pricing and order online. Repair shops, trucking companies & dealers welcome.

Request a business account

Terms and Conditions
30-day returns on unused parts
Same-day shipping on orders before 12PM CT

Internal Reference: 840.THS18201.82

Same-day shipping before 12PM CT from our Illinois warehouse
Part requests and quotes answered within one business hour
30-day returns
1-Year FleetPro Warranty
Wholesale and fleet pricing for approved business accounts
We speak English, Russian, Ukrainian, Romanian, Bulgarian, French and Polish

Engine Coolant Thermostat, Specifications & Fitment

OE-grade engine coolant thermostat.

Specifications

Engine Coolant Thermostat
Brand: Calorstat
Grade: OE

Where it's used

Mack and Volvo engine cooling systems. Replaces Mack 20463750, Mack 20560249, Mack 21237213, Mack 21264664, Mack 21412639.

Product Details

Brand	Calorstat
Quality Tier	OEM
OEM Reference	Mack 20560249
Condition	New
Warranty	1-Year FleetPro Warranty