2012 Jeep Wrangler Engine Parts

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

9 Camshaft parts for the 2012 Jeep Wrangler come from 3 brands — MOPAR, MELLING and ENGINETECH. The "Popular" part is MOPAR 5184378AH.

This group includes MOPAR 5184378AH, MOPAR 5184380AH and ENGINETECH ES1420 and the remaining parts above.

This table covers the seals at each camshaft end. 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

One part is listed for the 2012 Jeep Wrangler — AJUSA 15084500.

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

5 Connecting Rod Bearing parts for the 2012 Jeep Wrangler come from 4 brands — SEALED POWER, ENGINETECH, KING ENGINE BEARINGS and 1 other brand. The "Popular" part is ENGINETECH BB175J.

Part numbers include ENGINETECH BB175J, KING ENGINE BEARINGS CR6857SM and MAHLE / CLEVITE CB1957A6, among others listed above.

This table covers the Connecting Rod bolts. Read more

One part is listed for the 2012 Jeep Wrangler — MOPAR 6509128AA.

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

10 Conversion / Lower Gasket Set parts for the 2012 Jeep Wrangler come from 10 brands — ITM ENGINE COMPONENTS, SKP, AJUSA and 7 other brands. The "Popular" part is ITM ENGINE COMPONENTS 0921656.

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

2 Crankshaft parts for the 2012 Jeep Wrangler come from 2 brands — ENGINETECH and MOPAR.

This group includes ENGINETECH 191020 and MOPAR 5184251AI.

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

5 Crankshaft Main Bearing parts are listed for the 2012 Jeep Wrangler, from MOPAR, MAHLE / CLEVITE and KING ENGINE BEARINGS. MAHLE / CLEVITE MS2351A carries the "Popular" badge.

Listed part numbers: MAHLE / CLEVITE MS2351A, KING ENGINE BEARINGS MB4518SI and MOPAR 5184107AH, plus the other parts above.

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

4 Crankshaft Repair Sleeve parts are listed for the 2012 Jeep Wrangler, from BCA, NATIONAL, SCHAEFFLER and 1 other brand.

Part numbers include BCA NS99177, NATIONAL 99177 and SCHAEFFLER SR3499, among others listed 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

12 Crankshaft Seal parts are listed for the 2012 Jeep Wrangler, from MOPAR, NATIONAL, WJB / INMOTION PARTS and 6 other brands. MAHLE / CLEVITE 67964 carries the "Popular" badge.

This table covers the cylinder heads that close the top of the block. Read more

6 Cylinder Head parts are listed for the 2012 Jeep Wrangler, from MOPAR and ENGINETECH. MOPAR R3620112AA carries the "Popular" badge.

Listed part numbers: MOPAR R3620112AA, MOPAR RL141353AC and ENGINETECH CH1132R, plus the other parts above.

This table covers the Cylinder Head Alignment Dowel pins. Read more

This group shows a single part: MOPAR 6100997.

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

8 Cylinder Head Bolt parts for the 2012 Jeep Wrangler come from 8 brands — FEL-PRO, MAHLE / CLEVITE, AJUSA and 5 other brands. The "Popular" part is FEL-PRO ES72467.

This group includes FEL-PRO ES72467, MAHLE / CLEVITE GS33681 and AJUSA 81062400 and the remaining parts 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

16 Cylinder Head Gasket parts for the 2012 Jeep Wrangler come from 8 brands — VICTOR REINZ, APEX, FEL-PRO and 5 other brands. The "Popular" part is APEX AHG1312L.

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

11 Cylinder Head Gasket Set parts for the 2012 Jeep Wrangler come from 9 brands — ENGINETECH, FEL-PRO, MAHLE / CLEVITE and 6 other brands. The "Popular" part is ENGINETECH CR220HSA.

This table covers the Cylinder Head plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

One part is listed for the 2012 Jeep Wrangler — MOPAR 4556020AB.

This table covers the Cylinder Head Spacer shims. Read more

2 Cylinder Head Spacer Shim parts for the 2012 Jeep Wrangler come from SBI.

Part numbers include SBI 2302200L and SBI 2302200R.

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

3 Engine Block Heater parts are listed for the 2012 Jeep Wrangler, from KAT'S HEATERS and MOPAR.

This group includes KAT'S HEATERS 28814, KAT'S HEATERS 11814 and MOPAR 4609325.

This table covers the Engine covers. Read more

3 Engine Cover parts for the 2012 Jeep Wrangler come from MOPAR.

Listed part numbers: MOPAR 4861821AB, MOPAR 55395632AB and MOPAR 55395633AB.

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

5 Engine Kit Gasket Set parts for the 2012 Jeep Wrangler come from 5 brands — FEL-PRO, AJUSA, MAHLE / CLEVITE and 2 other brands. The "Popular" part is FEL-PRO 2603181.

This group includes FEL-PRO 2603181, AJUSA 50488100 and MAHLE / CLEVITE 953748 and the remaining parts 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

6 Exhaust Valve parts are listed for the 2012 Jeep Wrangler, from ENGINETECH, MELLING, MAHLE / CLEVITE and 3 other brands. ENGINETECH V4483 carries the "Popular" badge.

Part numbers include ENGINETECH V4483, MELLING V3264 and MAHLE / CLEVITE 2114692, among others listed above.

This table covers the Expansion plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

4 Expansion Plug parts for the 2012 Jeep Wrangler come from MOPAR.

Part numbers include MOPAR 68060349AA, MOPAR 5096861AB and MOPAR 5097712AB, among others listed above.

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

6 Harmonic Balancer parts for the 2012 Jeep Wrangler come from 6 brands — SKP, ATP, DAYCO and 3 other brands. The "Popular" part is ATP 102343.

The Economy section lists 1 option from SKP — the catalog's value-priced group. SKP SK594405 is listed in this group.

In the Standard Replacement grade, ATP, DAYCO, DORMAN and 2 other brands supply 5 parts: built to original-equipment specification. A representative part number is ATP 102343.

Listed part numbers: ATP 102343, SKP SK594405 and DAYCO PB1707N, plus the other 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

6 Intake Manifold parts are listed for the 2012 Jeep Wrangler, from MOPAR, AUTOTECNICA, DORMAN and 2 other brands. AUTOTECNICA CY1418959 carries the "Popular" badge.

This group includes AUTOTECNICA CY1418959, DORMAN 615914 and MOPAR 5184199AF and the remaining parts above.

This table covers the Intake Manifold bolts. Read more

This group shows a single part: DORMAN 32128.

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

14 Intake Manifold Gasket parts for the 2012 Jeep Wrangler come from 10 brands — SKP, DORMAN, MAHLE / CLEVITE and 7 other brands. The "Popular" part is DORMAN 615917.

The Economy section: 3 options from SKP and AUTOTECNICA. AUTOTECNICA CY1420930 is listed in this group.

Standard Replacement: 11 parts, from DORMAN, MAHLE / CLEVITE, MOPAR and 5 other brands. A representative part number is DORMAN 615917.

This table covers the gaskets that seal the Intake Plenum. 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 Intake Plenum Gasket parts are listed for the 2012 Jeep Wrangler, from FEL-PRO, ULTRA-POWER, APEX and 3 other brands. FEL-PRO MS97205 carries the "Popular" badge.

This group includes FEL-PRO MS97205 and APEX AMS13120 and the remaining parts above.

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 are listed for the 2012 Jeep Wrangler, from MELLING, MOPAR, ENGINETECH and 3 other brands. MELLING V3263 carries the "Popular" badge.

This group includes MELLING V3263, MOPAR 5184127AC and ENGINETECH V2670 and the remaining parts 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

9 Motor Mount parts are listed for the 2012 Jeep Wrangler, from SKP, ANCHOR, DEA / MARMON RIDE CONTROL and 2 other brands. SKP SKM3322 carries the "Popular" badge.

Economy: 2 parts, from SKP. A representative part number is SKP SKM3322.

The Standard Replacement section: 7 options from ANCHOR, DEA / MARMON RIDE CONTROL, WESTAR and 1 other brand. ANCHOR 3322 is listed in this group.

This group includes SKP SKM3322, SKP SKM3321 and ANCHOR 3322 and the remaining parts above.

This table covers the brackets that mount the Motor Mount. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

MOPAR supplies both parts for the 2012 Jeep Wrangler.

Listed part numbers: MOPAR 68003504AB and MOPAR 68003505AB.

This table covers the Motor Mount Heat insulators. Read more

This group shows a single part: MOPAR 4560199AA.

This table covers the isolators in an engine mount. Read more

2 Motor Mount Isolator parts for the 2012 Jeep Wrangler come from MOPAR.

Listed part numbers: MOPAR 5147190AB and MOPAR 5147191AB.

This table covers the Motor Mount kits. Read more

One part is listed for the 2012 Jeep Wrangler — ANCHOR 300177.

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

30 Oil parts are listed for the 2012 Jeep Wrangler, from VALVOLINE, MOBIL, LIQUI MOLY and 3 other brands. LIQUI MOLY 20228 carries the "Popular" badge. Full Synthetic, High Mileage (>75,000 Miles) and Synthetic Blend are all represented, and Full Synthetic alone accounts for 19 parts.

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

2 Oil Cooler parts are listed for the 2012 Jeep Wrangler, from STANDARD MOTOR PRODUCTS and VEMO.

Part numbers include STANDARD MOTOR PRODUCTS OFH100 and VEMO V33600006.

This table covers the seals at the Oil Cooler Adapter. 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

One part is listed for the 2012 Jeep Wrangler — FEL-PRO ES73012.

This table covers the gaskets that seal the Oil Cooler. 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

2 Oil Cooler Gasket parts for the 2012 Jeep Wrangler come from 2 brands — FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO ES73779 and MAHLE / CLEVITE GS33683.

This table covers the Oil Cooler Hose pipes. Read more

One part is listed for the 2012 Jeep Wrangler — MOPAR 68092947AA.

This table covers the Oil Cooler Mounting kits. Read more

This group shows a single part: VICTOR REINZ 131001801.

This table covers the Oil Dipstick tubes. Read more

MOPAR supplies both parts for the 2012 Jeep Wrangler.

This group includes MOPAR 5047487AC and MOPAR 68103862AA.

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

6 Oil Drain Plug parts are listed for the 2012 Jeep Wrangler, from DORMAN, AGS, MOPAR and 1 other brand. AGS ODP00007 carries the "Popular" badge.

This group includes AGS ODP00007, DORMAN 090053 and DORMAN 090115 and the remaining parts 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

This group shows a single part: FEL-PRO 72907.

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

4 Oil Filler Cap parts are listed for the 2012 Jeep Wrangler, from CALORSTAT, GATES, MOTORAD and 1 other brand.

Listed part numbers: CALORSTAT OC2334, GATES 31299 and MOTORAD MO158, plus the other parts above.

This table covers the Oil Filler tubes. Read more

One part is listed for the 2012 Jeep Wrangler — MOPAR 68051838AC.