2011 Kia Optima 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

18 Coolant / Antifreeze parts are listed for the 2011 Kia Optima, from PRESTONE, VALVOLINE, PEAK and 3 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 VALVOLINE — rated for severe service. VALVOLINE ZXG051 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 7 options from VALVOLINE, BECK/ARNLEY, AISIN and 1 other brand — 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

One part is listed for the 2011 Kia Optima — HYUNDAI 254802G820.

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

2 Coolant Hose / Pipe Seal parts for the 2011 Kia Optima come from 2 brands — HYUNDAI and VICTOR REINZ.

Part numbers include HYUNDAI 2546221000 and VICTOR REINZ 151118601.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2011 Kia Optima — ACKOJA A520753.

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

2 Coolant Reservoir parts for the 2011 Kia Optima come from 2 brands — LARES and TECHPRO.

Part numbers include LARES 37410 and TECHPRO HY3014110.

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 2011 Kia Optima come from MOTORAD.

In the Locking Replacement grade, MOTORAD supplies 1 part: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD ST13R.

Standard Replacement: 1 part, from MOTORAD. A representative part number is MOTORAD T13R.

1 further part sits outside the graded sections, with the same engine-level match.

This group includes MOTORAD ST13R, MOTORAD T13R and MOTORAD T142.

This table covers the Cooling Fan control modules. Read more

5 Cooling Fan Control Module parts for the 2011 Kia Optima come from 2 brands — US MOTOR WORKS and STANDARD MOTOR PRODUCTS. The "Popular" part is STANDARD MOTOR PRODUCTS RY2026.

This group includes STANDARD MOTOR PRODUCTS RY2026, US MOTOR WORKS 16759 and US MOTOR WORKS 16749 and the remaining parts above.

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

4 Cooling System Tester Adapter parts are listed for the 2011 Kia Optima, from MOTORAD, GATES and STANT.

Listed part numbers: GATES 31428, MOTORAD 3121 and MOTORAD 3122, plus the other parts above.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

2 Intercooler parts are listed for the 2011 Kia Optima, from TECHPRO and TYC.

Part numbers include TECHPRO HY3012100 and TYC 13468.

This table covers the Inverter coolers. Typical signs include overheated fluid, a leak at the fittings, or mixed fluids in the reservoir. Flush the lines when you replace a cooler. Read more

9 Inverter Cooler parts for the 2011 Kia Optima come from 8 brands — CSF, DORMAN, DENSO and 5 other brands. The "Popular" part is CSF 3678.

The Economy section: 1 option from DORMAN. DORMAN 918570 is listed in this group.

Standard Replacement: 6 parts, from CSF, DENSO, AGILITY and 3 other brands. A representative part number is CSF 3678.

2 further parts sit outside the graded sections, with the same engine-level match.

This group includes CSF 3678, DORMAN 918570 and DENSO 2219446 and the remaining parts above.

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

23 Radiator parts are listed for the 2011 Kia Optima, from KOYORAD, NISSENS, UAC and 9 other brands. CSF 3640 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

10 Radiator Cap parts are listed for the 2011 Kia Optima, from CALORSTAT, GATES, MOTORAD and 3 other brands. GATES 31534 carries the "Popular" badge.

The Locking Replacement section: 4 options from CALORSTAT, GATES and MOTORAD. GATES 31534 is listed in this group.

The Standard Replacement section: 6 options from MOTORAD, SKP, CALORSTAT and 3 other brands. MOTORAD T16R is listed in this group.

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 2011 Kia Optima come from 9 brands — DORMAN, GPD, TYC and 6 other brands. The "Popular" part is DORMAN 620795.

The Economy section: 5 options from DORMAN, GPD and TECHPRO. DORMAN 620795 is listed in this group.

Standard Replacement: 9 parts, from TYC, FOUR SEASONS, UAC and 3 other brands. A representative part number is AGILITY 6010083.

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

One part is listed for the 2011 Kia Optima — ACKOJA A52010002.

This table covers the Radiator Fan resistors. Read more

3 Radiator Fan Resistor parts are listed for the 2011 Kia Optima, from GATES and STANDARD MOTOR PRODUCTS.

Part numbers include GATES FCM160, GATES FCM150 and STANDARD MOTOR PRODUCTS RY2022.

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

16 Radiator Hose parts for the 2011 Kia Optima come from 4 brands — CONTINENTAL, GATES, DAYCO and 1 other brand. The "Popular" part is ACDELCO 27092X.

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

15 Temperature Sender / Sensor parts are listed for the 2011 Kia Optima, from VEMO, GPD, HOLSTEIN and 11 other brands. BECK/ARNLEY 1581695 carries the "Popular" badge.

Economy: 5 parts, from VEMO, GPD, HOLSTEIN and 1 other brand. A representative part number is GPD 1712556.

The Standard Replacement section: 10 options from BECK/ARNLEY, DELPHI, STANDARD MOTOR PRODUCTS and 7 other brands. BECK/ARNLEY 1581695 is listed in this group.

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

26 Thermostat parts for the 2011 Kia Optima come from 9 brands — MOTORAD, FACET, CALORSTAT and 6 other brands. The "Popular" part is BECK/ARNLEY 1430892. They are grouped as Premium and Standard Replacement, with Standard Replacement the largest group at 15 parts from FACET, BECK/ARNLEY, 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

16 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2011 Kia Optima, from FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 3 other brands. FEL-PRO 35921 carries the "Popular" badge.

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

19 Thermostat Housing / Water Outlet parts for the 2011 Kia Optima come from 9 brands — MOTORAD, FOUR SEASONS, GATES and 6 other brands. The "Popular" part is DORMAN 9025994.

The Economy section: 6 options from DORMAN, SKP, AUTOTECNICA and 1 other brand. DORMAN 9025994 is listed in this group.

Standard Replacement: 11 parts, from MOTORAD, FOUR SEASONS, GATES and 1 other brand. A representative part number is MOTORAD CH5126.

2 further parts sit outside the graded sections, with the same engine-level match.

This table covers the gaskets that seal the Water Inlet. 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

3 Water Inlet Gasket parts are listed for the 2011 Kia Optima, from AJUSA, APEX and FEL-PRO.

This group includes AJUSA 01113800, APEX AWO2093 and FEL-PRO 35368.

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

18 Water Pump parts for the 2011 Kia Optima come from 11 brands — GMB, BECK/ARNLEY, FVP and 8 other brands. The "Popular" part is US MOTOR WORKS US8982.

The Economy section: 6 options from BECK/ARNLEY, US MOTOR WORKS, CARTER and 2 other brands. US MOTOR WORKS US8982 is listed in this group.

Standard Replacement: 12 parts, from GMB, AISIN, DAYCO and 4 other brands. A representative part number is AISIN WPK807.

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

10 Water Pump Gasket parts are listed for the 2011 Kia Optima, from FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 3 other brands. FEL-PRO 35813 carries the "Popular" badge.

This table covers the Water Pump Seal 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 Water Pump Seal / O-Ring parts for the 2011 Kia Optima come from 2 brands — APEX and FEL-PRO.

This group includes APEX AWP3203 and FEL-PRO ES72872.