Beck Arnley 143-0823 Engine Coolant Thermostat
OE Quality 60-Day Returns
Beck Arnley

Beck Arnley 143-0823 Engine Coolant Thermostat

Brand Beck Arnley 143-0823
HOUSING Not included
TEMPERATURE 176
Fits Mercedes-Benz · 16 vehicles

OE-spec thermostat. Matches form, fit, and function requirements for confident installation.

176-degree opening. Helps regulate coolant flow at the specified temperature.

Thermostat only; housing is not included.

$34.74Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $34.74
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Engine Coolant Thermostat options

Engine Coolant Thermostat for Mercedes-Benz

Restore proper coolant flow control with the Beck Arnley 143-0823 engine coolant thermostat. This OE-style replacement is built to match foreign nameplate specifications for form, fit, and function, with a 176-degree opening temperature for the listed Mercedes-Benz applications.

  • Engine coolant thermostat with 176-degree temperature rating
  • Housing not included
  • Includes gasket/seal for the listed applications
  • OE-style fitment for foreign nameplate vehicles
  • Beck Arnley part number 143-0823

Fitment Details

  • Fits 1998-1999 Mercedes-Benz E300, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1994 Mercedes-Benz S350, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1990-1993 Mercedes-Benz 300D, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1987 Mercedes-Benz 300D, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1992-1993 Mercedes-Benz 300SD, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1991 Mercedes-Benz 350SD, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1990-1991 Mercedes-Benz 350SDL, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1986-1987 Mercedes-Benz 300SDL, N/A; original equipment temperature; includes gasket; temperature 176
  • Fits 1987 Mercedes-Benz 300TD, N/A; original equipment temperature; includes gasket; temperature 176

What This Thermostat Helps Address

  • Engine running too cool or too warm due to a worn thermostat
  • Delayed coolant circulation during warm-up
  • Temperature fluctuation in Mercedes-Benz cooling systems
  • Cooling system service on vehicles requiring a 176-degree thermostat
  • Replacement of a thermostat that no longer opens at the correct temperature

Installation Notes and Tips

Verify the thermostat housing condition before installation, since housing is not included. Confirm the 176-degree specification and match the application to your Mercedes-Benz E300, S350, 300D, 300SD, 350SD, 350SDL, 300SDL, or 300TD before service. Clean the sealing surfaces thoroughly and install with the included gasket/seal where applicable.

Quality Assurance

Beck Arnley sources parts to meet foreign nameplate OE specifications for form, fit, and function. Part number 143-0823 is selected for the listed Mercedes-Benz applications using the original equipment temperature requirement.

Related reading

This part fits 16 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1999Mercedes-BenzE3003.0LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1998Mercedes-BenzE3003.0LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1994Mercedes-BenzS3503.4LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1993Mercedes-Benz300D2.5LL5N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1993Mercedes-Benz300SD3.4LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1992Mercedes-Benz300D2.5LL5N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1992Mercedes-Benz300SD3.4LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1991Mercedes-Benz300D2.5LL5N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1991Mercedes-Benz350SD3.4LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1991Mercedes-Benz350SDL3.4LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1990Mercedes-Benz300D2.5LL5N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1990Mercedes-Benz350SDL3.4LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1987Mercedes-Benz300D3.0LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1987Mercedes-Benz300SDL3.0LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1987Mercedes-Benz300TD3.0LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
1986Mercedes-Benz300SDL3.0LL6N/AORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176