2012 Honda Civic Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

16 Coolant / Antifreeze parts are listed for the 2012 Honda Civic, from PRESTONE, PEAK, VALVOLINE and 4 other brands. FVP MV5050GAL carries the "Popular" badge. 15 parts fit every engine; the other 1 is engine-specific.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PRESTONE, PEAK and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 5 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 6 options from BECK/ARNLEY, VALVOLINE, AISIN and 2 other brands — built to original-equipment specification. VALVOLINE 861398 is listed in this group.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

5 Coolant Hose / Pipe parts are listed for the 2012 Honda Civic, from CONTINENTAL, DAYCO and GATES.

Listed part numbers: CONTINENTAL 63706, CONTINENTAL 63812 and DAYCO 80393, plus the other parts above.

This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

8 Coolant Hose / Pipe Seal parts for the 2012 Honda Civic come from 5 brands — AJUSA, MAHLE / CLEVITE, VICTOR REINZ and 2 other brands.

This group includes AJUSA 16022450, AJUSA 16022400 and APEX AWO2317 and the remaining parts above.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2012 Honda Civic — ACKOJA A269934.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

5 Coolant Reservoir parts for the 2012 Honda Civic come from 5 brands — AUTOTECNICA, DORMAN, GPD and 2 other brands. The "Popular" part is AUTOTECNICA HA0718798. 4 parts fit every engine; the other 1 is engine-specific.

This group includes AUTOTECNICA HA0718798, DORMAN 603885 and GPD 2411252 and the remaining parts above.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

3 Coolant Reservoir Cap parts for the 2012 Honda Civic come from 3 brands — CALORSTAT, DORMAN and MOTORAD. Every part fits all 4 engine options (1.5L L4 ELECTRIC/GAS, 1.8L L4, 1.8L L4 CNG and 2.4L L4).

Part numbers include CALORSTAT RC0174, DORMAN 54228 and MOTORAD T108.

This table covers the adapters used to pressure-test this cooling system. Read more

3 Cooling System Tester Adapter parts are listed for the 2012 Honda Civic, from MOTORAD and GATES. All of them fit every engine offered in the 2012 Civic.

This group includes GATES 31409, MOTORAD 3124 and MOTORAD 3125.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

38 Radiator parts are listed for the 2012 Honda Civic, from AGILITY, OSC, TYC and 9 other brands. ULTRA-POWER 13257 carries the "Popular" badge. Grades run from Economy through Standard Replacement; Standard Replacement is the most populated section, led by AGILITY, OSC, TYC and 7 other brands.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

6 Radiator Cap parts are listed for the 2012 Honda Civic, from MOTORAD, CSF, GATES and 2 other brands. CSF 4514 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.

The Locking Replacement section lists 1 option from MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. MOTORAD ST37 is listed in this group.

The Standard Replacement section: 5 options from CSF, GATES, CALORSTAT and 2 other brands. CSF 4514 is listed in this group.

Listed part numbers: CSF 4514, MOTORAD ST37 and GATES 31412, plus the other parts above.

This table covers the petcocks used to drain the radiator. Read more

This group shows a single part: DORMAN 490216.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

14 Radiator Fan Assembly parts for the 2012 Honda Civic come from 10 brands — TECHPRO, GPD, TYC and 7 other brands. The "Popular" part is SKP SK621480.

The Economy section: 8 options from TECHPRO, GPD, SKP and 3 other brands. SKP SK621480 is listed in this group.

Standard Replacement: 6 parts, from TYC, UAC, NISSENS and 1 other brand. A representative part number is TYC 601410.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

ACKOJA supplies the 3 Radiator Fan Motor parts for the 2012 Honda Civic.

This group includes ACKOJA A26010016, ACKOJA A26010017 and ACKOJA A26010018.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

13 Radiator Hose parts for the 2012 Honda Civic come from 3 brands — GATES, CONTINENTAL and DAYCO. The "Popular" part is DAYCO 72402.

This table covers the Radiator Mount bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

2 Radiator Mount Bushing parts for the 2012 Honda Civic come from DORMAN. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include DORMAN 927241 and DORMAN 927240.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

17 Temperature Sender / Sensor parts are listed for the 2012 Honda Civic, from HOLSTEIN, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and 10 other brands. HOLSTEIN 2CTS0123 carries the "Popular" badge. 16 parts fit every engine; the other 1 is engine-specific.

Economy: 6 parts, from HOLSTEIN, STANDARD MOTOR PRODUCTS, CALORSTAT and 2 other brands. A representative part number is HOLSTEIN 2CTS0123.

The Standard Replacement section: 11 options from BECK/ARNLEY, NTK, STANDARD MOTOR PRODUCTS and 6 other brands. STANDARD MOTOR PRODUCTS TX215 is listed in this group.

This table covers the Temperature Sender / Sensor O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

2 Temperature Sender / Sensor O-Ring parts are listed for the 2012 Honda Civic, from APEX and FEL-PRO. All of them fit every engine offered in the 2012 Civic.

Part numbers include APEX AWO2407 and FEL-PRO 72926.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

34 Thermostat parts for the 2012 Honda Civic come from 11 brands — MOTORAD, JAPANESE OE, CALORSTAT and 8 other brands. The "Popular" part is MOTORAD 5328170. Grades run from Heavy Duty through Standard Replacement; Standard Replacement is the most populated section, led by JAPANESE OE, MOTORAD, CALORSTAT and 6 other brands.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

37 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2012 Honda Civic, from MAHLE / CLEVITE, FEL-PRO, APEX and 8 other brands. AISIN THP505 carries the "Popular" badge. The notes list position, dimensions and spec qualifiers wherever the manufacturer distinguishes between variants.