Motorad
High Flow

Motorad 2042-180 Engine Coolant Thermostat

Brand Motorad 2042-180
Bypass Diameter 1.09 in
Bypass Length 1.39 in
Flange Thickness 0.05 in
Gasket Or Seal Included No
Installation Tool Included No
Jiggle Pin Weep Hole Yes
Sealing Flange Outside Diameter 2.04
Temperature 180 Deg. F
Temperature (Degree) 180
Product line High Flow
Fits Ford, Honda, Acura, Sterling, and Toyota · 58 vehicles

OE supplier quality. Built with OEM materials and processes for dependable cooling performance.

Copper case design. Wax compound responds quickly to coolant temperature changes.

Air relief valve. Helps purge trapped air for smoother cooling system operation.

Cross-references Dorman - Autograde 45878, Dorman - Autograde 65428 and Dorman - HELP 15878 for the same application. See all 9.

$17.54Free 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 $17.54
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Motorad High Flow Thermostat 2042-180

The Motorad High Flow 2042-180 engine coolant thermostat is an OE-style replacement built for stable temperature control in demanding cooling systems. It opens at 180°F and uses a copper case with wax compound for quick response to coolant temperature changes.

Compatible With Honda Civic, Honda Accord, Acura Integra, Acura CL, Honda CR-V, Honda Prelude, Honda CRX, Ford Transit, and Toyota Pickup applications that call for a 180°F thermostat. The Motorad High Flow line focuses on OEM-spec construction and flow characteristics for consistent cooling performance.

Key Features

  • 180°F opening temperature for factory-style engine warm-up and cooling control
  • Copper case and wax compound for rapid reaction to coolant temperature changes
  • High Flow design for demanding automotive cooling systems
  • Offset design with air relief valve where applicable
  • Jiggle pin weep hole included for air bleeding during service
  • OEM-style seals used where applicable
  • Part number 2042-180 for direct catalog matching

Detailed Description

Motorad 2042-180 is an engine coolant thermostat engineered to OE specifications and manufacturing processes. It is built with OEM-quality materials and safety standards as supplied by an OE supplier, making it a practical choice for drivers servicing Honda Civic and Honda Accord cooling systems, as well as Acura Integra and Acura CL applications that require a 180°F thermostat. The High Flow design supports steady coolant circulation, while the copper case and wax element help the thermostat respond quickly as engine temperature changes.

This thermostat cross-references Dorman - HELP 15878 for the same application.

What It Helps Address

  • Engine running too cool or too warm due to a worn thermostat
  • Slow warm-up after cold starts
  • Temperature fluctuation in the cooling system
  • Air trapped in the thermostat housing during service
  • Cooling performance concerns on vehicles using a 180°F thermostat

Installation Notes and Tips

  • Verify the sealing flange outside diameter, bypass dimensions, and flange thickness before installation.
  • This thermostat does not include a gasket or seal, so confirm the correct seal for the application.
  • Use the jiggle pin weep hole and air relief features to help purge trapped air during refill.
  • Inspect the thermostat housing and coolant condition before reassembly.
  • Confirm the vehicle calls for a 180°F thermostat before installation.

Quality Assurance

Manufactured to OEM specifications with OE-supplier quality materials and processes. The copper case, wax compound, and OEM-style design details support consistent service in factory-style cooling system applications.

This part fits 58 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
2014FordTransit—2.2LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
2013FordTransit—2.2LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
2005HondaCivic—1.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2004HondaCivic—1.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2003HondaCivic—1.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2002HondaAccord—2.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2001AcuraIntegra—1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2001HondaCR-V—2.0LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2000AcuraIntegra—1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2000HondaCR-V—2.0LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1999AcuraCL—2.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1999AcuraIntegra—1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1998AcuraCL—2.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1997HondaAccord—2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1996HondaAccord—2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1996HondaPrelude—2.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1995HondaPrelude—2.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1994HondaPrelude—2.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1994HondaPreludeS2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1993AcuraIntegra—1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1993AcuraIntegra—1.7LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1993HondaAccord—2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1993HondaPrelude—2.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1993HondaPreludeS2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1992AcuraIntegra—1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1992AcuraIntegra—1.7LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1992HondaAccord—2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1991AcuraIntegra—1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1991HondaAccord—2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1991HondaCivic—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1991HondaCivic—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1991HondaCRX—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1991HondaCRX—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1990AcuraIntegra—1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1990HondaAccord—2.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1990HondaCivic—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1990HondaCivic—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1990HondaCRX—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1990HondaCRX—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1989HondaCivic—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1989HondaCivic—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1989HondaCRX—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1989HondaCRX—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1988HondaCivic—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1988HondaCivic—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1988HondaCRX—1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1988HondaCRX—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1987HondaCivic—1.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1986HondaCivic—1.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1986ToyotaPickup—2.4LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
1985HondaCivic—1.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1985ToyotaPickup—2.4LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
1984HondaCivic—1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1984HondaCivic—1.3LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1984ToyotaPickup—2.4LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
1983ToyotaPickup—2.2LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
1982ToyotaPickup—2.2LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
1981ToyotaPickup—2.2LL4N/A180°F thermostat fits multiple vehicle models.; High Flow
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - Autograde — 45878Dorman - Autograde — 65428Dorman - HELP — 15878Motorad — 2042-18012TP11D1601-29103715878DLG92042180P15878