Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

PAI Industries · Cooling System
740023
In stock · ships from Knoxville
This engine coolant thermostat is designed for Mercedes and Freightliner trucks with Detroit Diesel engines.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Freightliner
Freightliner
Intended for specific Mercedes and Freightliner trucks with Detroit Diesel engines. Exact vehicle model years are not provided; verify compatibility using your engine’s OE thermostat part number.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 10 of 10.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It opens at 181°F (83°C) to regulate coolant flow, helping prevent overheating and ensuring efficient engine operation. Typically replaced when the engine runs too hot or too cold due to a sticking thermostat, or as part of normal preventive maintenance. It serves as a direct aftermarket replacement for OE part A0052032675.
Part Number: 740023
THERMOSTAT
Dealer: Post Onsite
Compatibility, alternatives, and more