2012 Kia Optima Engine Parts

This table covers the Balance shafts. Read more

This group shows a single part: KIA 233002G951.

This table covers the chains that drive the balance shafts. Read more

One part is listed for the 2012 Kia Optima — PREFERRED COMPONENTS INC C774.

This table covers the Balance Shaft Chain tensioners. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

This group shows a single part: PREFERRED COMPONENTS INC T66222.

This table covers the camshafts that open the valves. Read more

One part is listed for the 2012 Kia Optima — HYUNDAI 242002G750.

This table covers the connecting rods between each piston and the crankshaft. Read more

One part is listed for the 2012 Kia Optima — TOPLINE CRHY24.

This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

6 Connecting Rod Bearing parts are listed for the 2012 Kia Optima, from KING ENGINE BEARINGS, ENGINETECH, TOPLINE and 1 other brand. ENGINETECH BB1041 carries the "Popular" badge.

In the High Performance grade, KING ENGINE BEARINGS supplies 1 part: engineered beyond original-equipment specification. A representative part number is KING ENGINE BEARINGS CR4634XP.

The Standard Replacement section lists 5 options from KING ENGINE BEARINGS, ENGINETECH, TOPLINE and 1 other brand — built to original-equipment specification. ENGINETECH BB1041 is listed in this group.

This group includes ENGINETECH BB1041, KING ENGINE BEARINGS CR4634XP and TOPLINE RBHY11 and the remaining parts above.

This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

4 Conversion / Lower Gasket Set parts are listed for the 2012 Kia Optima, from AJUSA, APEX, FEL-PRO and 1 other brand.

This group includes AJUSA 54243500, APEX ACS2092 and FEL-PRO CS263331 and the remaining parts above.

This table covers the crankshafts that turn piston motion into rotation. Read more

One part is listed for the 2012 Kia Optima — TOPLINE CSHY11.

This table covers the main bearings that support the crankshaft in the block. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

6 Crankshaft Main Bearing parts for the 2012 Kia Optima come from 4 brands — KING ENGINE BEARINGS, TOPLINE, MAHLE / CLEVITE and 1 other brand. The "Popular" part is KING ENGINE BEARINGS MB5707SI.

The High Performance section: 1 option from KING ENGINE BEARINGS. KING ENGINE BEARINGS MB5771XP is listed in this group.

Standard Replacement: 5 parts, from TOPLINE, KING ENGINE BEARINGS, MAHLE / CLEVITE and 1 other brand. A representative part number is KING ENGINE BEARINGS MB5707SI.

Part numbers include KING ENGINE BEARINGS MB5707SI, KING ENGINE BEARINGS MB5771XP and MAHLE / CLEVITE MS2330A, among others listed above.

This table covers the sleeves used to restore a grooved crankshaft seal surface. Read more

4 Crankshaft Repair Sleeve parts for the 2012 Kia Optima come from 3 brands — WJB / INMOTION PARTS, BCA and NATIONAL.

This group includes BCA NS99166, NATIONAL 99166 and WJB / INMOTION PARTS WS99166 and the remaining parts above.

This table covers the front and rear seals that keep oil in at the crankshaft. 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

21 Crankshaft Seal parts for the 2012 Kia Optima come from 12 brands — VICTOR REINZ, FEL-PRO, NATIONAL and 9 other brands. The "Popular" part is BCA NS224200.

This table covers the bolts that clamp the cylinder head to the block. Read more

7 Cylinder Head Bolt parts are listed for the 2012 Kia Optima, from AJUSA, FEL-PRO, APEX and 4 other brands. AJUSA 81045900 carries the "Popular" badge.

Part numbers include AJUSA 81045900, FEL-PRO ES724651 and APEX AHB292, among others listed above.

This table covers the head gaskets that seal the block to the cylinder head. 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 Cylinder Head Gasket parts are listed for the 2012 Kia Optima, from FEL-PRO, ITM ENGINE COMPONENTS, AJUSA and 3 other brands. FEL-PRO 26707PT carries the "Popular" badge.

Listed part numbers: FEL-PRO 26707PT, ITM ENGINE COMPONENTS 0949858 and AJUSA 10198000, plus the other parts above.

This table covers multi-piece gasket sets for a cylinder-head job. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

7 Cylinder Head Gasket Set parts are listed for the 2012 Kia Optima, from AJUSA, ITM ENGINE COMPONENTS, ULTRA-POWER and 2 other brands. ITM ENGINE COMPONENTS 0910342 carries the "Popular" badge.

Part numbers include ITM ENGINE COMPONENTS 0910342, ULTRA-POWER HS54741C and AJUSA 52474200, among others listed above.

This table covers the block heaters that warm the coolant or oil in cold weather. Read more

2 Engine Block Heater parts for the 2012 Kia Optima come from KAT'S HEATERS.

Part numbers include KAT'S HEATERS 11812 and KAT'S HEATERS 28812.

This table covers the Engine covers. Read more

3 Engine Cover parts are listed for the 2012 Kia Optima, from TECHPRO and VARIOUS MFR.

Listed part numbers: TECHPRO KI1228128 and TECHPRO KI1228137, plus the other parts above.

This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

6 Engine Kit Gasket Set parts are listed for the 2012 Kia Optima, from AJUSA, ENGINETECH, ITM ENGINE COMPONENTS and 1 other brand. ENGINETECH HY24K4 carries the "Popular" badge.

Part numbers include ENGINETECH HY24K4, ITM ENGINE COMPONENTS 0909834 and AJUSA 50429200, among others listed above.

This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

5 Exhaust Valve parts for the 2012 Kia Optima come from 5 brands — MELLING, ITM ENGINE COMPONENTS, QUALCAST and 2 other brands. The "Popular" part is MELLING V3256.

Part numbers include MELLING V3256, ITM ENGINE COMPONENTS RX9973 and QUALCAST 1013191, among others listed above.

This table covers the followers that drive a mechanical fuel pump off the camshaft. Read more

2 Fuel Pump Camshaft Follower parts are listed for the 2012 Kia Optima, from STANDARD MOTOR PRODUCTS and WELLS.

This group includes STANDARD MOTOR PRODUCTS GDF401 and WELLS 5T5017.

This table covers the crankshaft pulleys / harmonic balancers at the front of the engine. Read more

7 Harmonic Balancer parts are listed for the 2012 Kia Optima, from ATP, SKP, ULTRA-POWER and 3 other brands. ULTRA-POWER 594706 carries the "Popular" badge.

In the Economy grade, SKP supplies 1 part: the catalog's value-priced group. A representative part number is SKP SK594706.

The Standard Replacement section: 4 options from ATP, ULTRA-POWER and DORMAN. ULTRA-POWER 594706 is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

This group includes ULTRA-POWER 594706, SKP SK594706 and ATP 102326 and the remaining parts above.

This table covers the Intake manifolds. Typical signs include an exhaust tick, a vacuum leak, or a gasket that has burned through. Replace the gaskets and hardware; a warped flange will leak with a new gasket alone. Read more

2 Intake Manifold parts for the 2012 Kia Optima come from 2 brands — DORMAN and LARES.

Listed part numbers: DORMAN 615949 and LARES 33505.

This table covers the Intake Manifold actuators. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

One part is listed for the 2012 Kia Optima — STANDARD MOTOR PRODUCTS IMA142.

This table covers the gaskets between the intake manifold and the cylinder head. 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

7 Intake Manifold Gasket parts are listed for the 2012 Kia Optima, from FEL-PRO, AJUSA, APEX and 2 other brands. APEX AMS13350 carries the "Popular" badge.

Part numbers include APEX AMS13350, FEL-PRO MS97319 and AJUSA 13240100, among others listed above.

This table covers the Intake Manifold Runner Control Valve solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

One part is listed for the 2012 Kia Optima — DORMAN 911724.

This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

6 Intake Valve parts for the 2012 Kia Optima come from 6 brands — MELLING, SBI, ENGINETECH and 3 other brands. The "Popular" part is MELLING V3255.

Part numbers include MELLING V3255, SBI 13255 and ENGINETECH IM4436, among others listed above.

This table covers the mounts that hold the engine to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

5 Motor Mount parts for the 2012 Kia Optima come from 4 brands — PIONEER, DEA / MARMON RIDE CONTROL, ANCHOR and 1 other brand. The "Popular" part is DEA / MARMON RIDE CONTROL A71001.

Listed part numbers: DEA / MARMON RIDE CONTROL A71001, ANCHOR 9766 and HYUNDAI 219502T000, plus the other parts above.

This table covers the Motor Mount kits. Read more

This group shows a single part: ANCHOR 300463.

This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable. Read more

105 Oil parts for the 2012 Kia Optima come from 7 brands — VALVOLINE, LIQUI MOLY, MOBIL and 4 other brands. The "Popular" part is MOBIL 125195. Grades run from Conventional through Synthetic Blend; Full Synthetic is the most populated section, led by LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands.

This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant. Read more

5 Oil Cooler parts for the 2012 Kia Optima come from 5 brands — AUTOTECNICA, ACKOJA, HYUNDAI and 2 other brands. The "Popular" part is AUTOTECNICA HY1421717.

Part numbers include AUTOTECNICA HY1421717, ACKOJA A52600019 and HYUNDAI 264102G000, among others listed above.

This table covers the Oil Cooler Mounting kits. Read more

HAYDEN supplies both parts for the 2012 Kia Optima.

Part numbers include HAYDEN 238 and HAYDEN 153.

This table covers the drain plugs in the oil pan. Read more

7 Oil Drain Plug parts for the 2012 Kia Optima come from 5 brands — DORMAN, AGS, ENGINETECH and 2 other brands. The "Popular" part is DORMAN 090033.

Part numbers include DORMAN 090033, DORMAN 090053 and AGS ODP00007, among others listed above.

This table covers the crush washers and gaskets under the oil drain plug. 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

5 Oil Drain Plug Gasket parts are listed for the 2012 Kia Optima, from DORMAN, FEL-PRO and ULTRA-POWER. DORMAN 095144 carries the "Popular" badge.

Part numbers include DORMAN 095144, DORMAN 095147 and DORMAN 995147CD, among others listed above.

This table covers the caps on the oil filler neck. Read more

4 Oil Filler Cap parts for the 2012 Kia Optima come from 4 brands — CALORSTAT, GATES, MOTORAD and 1 other brand.

This group includes CALORSTAT OC2331, GATES 31083 and MOTORAD MO151 and the remaining parts above.

This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive. Read more

16 Oil Filter parts for the 2012 Kia Optima come from 13 brands — BOSCH, VARIOUS MFR, HYUNDAI and 10 other brands. The "Popular" part is MOBIL M1104A.

The Economy section: 3 options from BOSCH, FRAM and VARIOUS MFR. BOSCH 72228WS is listed in this group.

The High Performance / Heavy Duty section lists 1 option from MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1104A is listed in this group.

Standard Replacement: 12 parts, from HYUNDAI, ACDELCO, BOSCH and 8 other brands. A representative part number is ACDELCO PF1127.

This table covers the Oil Filter Adapter Gasket 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

One part is listed for the 2012 Kia Optima — MAHLE / CLEVITE B32410.

This table covers the Oil nozzles. Read more

This group shows a single part: MELLING 5470N.