2012 Honda Pilot 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

17 Coolant / Antifreeze parts are listed for the 2012 Honda Pilot, from PRESTONE, PEAK, VALVOLINE and 4 other brands. FVP MV5050GAL carries the "Popular" badge.

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 Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

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 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

5 Coolant Hose / Pipe Seal parts for the 2012 Honda Pilot come from 4 brands — AJUSA, MAHLE / CLEVITE, FEL-PRO and 1 other brand. The "Popular" part is MAHLE / CLEVITE C32870.

Part numbers include MAHLE / CLEVITE C32870, AJUSA 16022400 and AJUSA 16022450, among others listed above.

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

2 Coolant Reservoir parts for the 2012 Honda Pilot come from 2 brands — DORMAN and TECHPRO.

This group includes DORMAN 603287 and TECHPRO HO3014129.

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

2 Coolant Reservoir Cap parts for the 2012 Honda Pilot come from 2 brands — AUTOTECNICA and MOTORAD.

Part numbers include AUTOTECNICA HA0722920 and MOTORAD T178.

This table covers the Coolant Water Crossover Mounting sets. Read more

2 Coolant Water Crossover Mounting Set parts are listed for the 2012 Honda Pilot, from MAHLE / CLEVITE and VICTOR REINZ.

This group includes MAHLE / CLEVITE C17813 and VICTOR REINZ 181016001.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts for the 2012 Honda Pilot come from US MOTOR WORKS.

This group includes US MOTOR WORKS 16749, US MOTOR WORKS 16779 and US MOTOR WORKS 16795.

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 Pilot, from MOTORAD and GATES.

Part numbers include 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

10 Radiator parts are listed for the 2012 Honda Pilot, from CSF, DENSO, AGILITY and 7 other brands. CSF 3402 carries the "Popular" badge.

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 Pilot, from MOTORAD, CSF, GATES and 2 other brands. CSF 4514 carries the "Popular" badge.

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.

Part numbers include CSF 4514, MOTORAD ST37 and GATES 31412, among others listed above.

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

10 Radiator Fan Assembly parts for the 2012 Honda Pilot come from 8 brands — GPD, SKP, TECHPRO and 5 other brands. The "Popular" part is FOUR SEASONS 76217.

The Economy section: 5 options from GPD, SKP and TECHPRO. GPD 2811924 is listed in this group.

Standard Replacement: 5 parts, from FOUR SEASONS, TYC, AGILITY and 2 other brands. A representative part number is FOUR SEASONS 76217.

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

5 Radiator Hose parts for the 2012 Honda Pilot come from 3 brands — GATES, DAYCO and CONTINENTAL. The "Popular" part is GATES 23784.

Part numbers include GATES 23784, CONTINENTAL 66348 and DAYCO 72565, among others listed above.

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

This group shows a single part: DORMAN 927241.

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

14 Temperature Sender / Sensor parts are listed for the 2012 Honda Pilot, from STANDARD MOTOR PRODUCTS, CALORSTAT, GPD and 10 other brands. STANDARD MOTOR PRODUCTS TX215T carries the "Popular" badge.

Economy: 6 parts, from STANDARD MOTOR PRODUCTS, CALORSTAT, GPD and 3 other brands. A representative part number is STANDARD MOTOR PRODUCTS TX215T.

The Standard Replacement section: 8 options from STANDARD MOTOR PRODUCTS, WELLS, BECK/ARNLEY and 5 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 Pilot, from APEX and FEL-PRO.

Listed part numbers: 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

15 Thermostat parts for the 2012 Honda Pilot come from 8 brands — MOTORAD, BECK/ARNLEY, CALORSTAT and 5 other brands. The "Popular" part is MOTORAD 5302170.

Heavy Duty: 1 part, from MOTORAD. A representative part number is MOTORAD 5302170.

Premium: 1 part, from MOTORAD. A representative part number is MOTORAD 7302170.

Standard Replacement: 13 parts, from MOTORAD, BECK/ARNLEY, CALORSTAT and 5 other brands. A representative part number is AISIN THH017.

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

14 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2012 Honda Pilot, from FEL-PRO, APEX, MAHLE / CLEVITE and 8 other brands. BECK/ARNLEY 0390115 carries the "Popular" badge.

This table covers the housings and outlets the thermostat sits in. Read more

5 Thermostat Housing / Water Outlet parts for the 2012 Honda Pilot come from 5 brands — DORMAN, GPD, FOUR SEASONS and 2 other brands. The "Popular" part is DORMAN 9025827.

The Economy section: 2 options from DORMAN and GPD. DORMAN 9025827 is listed in this group.

Standard Replacement: 3 parts, from FOUR SEASONS, GATES and MOTORAD. A representative part number is FOUR SEASONS 86018.

Part numbers include DORMAN 9025827, GPD 8241573 and FOUR SEASONS 86018, among others listed above.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

11 Water Pump parts for the 2012 Honda Pilot come from 10 brands — AISIN, SKP, BECK/ARNLEY and 7 other brands. The "Popular" part is SKP SK1351530.

The Economy section: 5 options from SKP, BECK/ARNLEY, FVP and 2 other brands. SKP SK1351530 is listed in this group.

Standard Replacement: 6 parts, from AISIN, GMB, ACDELCO and 2 other brands. A representative part number is AISIN WPH801.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

6 Water Pump Gasket parts are listed for the 2012 Honda Pilot, from FEL-PRO, MAHLE / CLEVITE, APEX and 3 other brands. FEL-PRO 35677 carries the "Popular" badge.

Listed part numbers: FEL-PRO 35677, MAHLE / CLEVITE K17818 and APEX AWP3161, plus the other parts above.