2018 Jeep Wrangler Cooling System Parts

This table covers the Battery 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

This group shows a single part: MOTORAD TA9218.

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

20 Coolant / Antifreeze parts are listed for the 2018 Jeep Wrangler, from PRESTONE, VALVOLINE, PEAK and 3 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 2018 Wrangler.

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, PEAK, PRESTONE 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 2 options from PRESTONE and VALVOLINE — 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 8 options from VALVOLINE, PRESTONE, ACDELCO and 2 other brands — built to original-equipment specification. ACDELCO 105027 is listed in this group.

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

MOPAR supplies the 10 Coolant Hose / Pipe parts for the 2018 Jeep Wrangler. MOPAR 68280797AC carries the "Popular" badge.

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

10 Coolant Reservoir parts for the 2018 Jeep Wrangler come from 3 brands — TECHPRO, MOPAR and GPD. The "Popular" part is MOPAR 68364312AC.

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

4 Coolant Reservoir Cap parts for the 2018 Jeep Wrangler come from 2 brands — MOTORAD and AUTOTECNICA.

Listed part numbers: AUTOTECNICA GM0714619, MOTORAD T114 and MOTORAD T116, plus the other parts above.

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

MOTORAD supplies both parts for the 2018 Jeep Wrangler.

Part numbers include MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

One part is listed for the 2018 Jeep Wrangler — MOPAR 4809147AA.

This table covers the Intercooler Air Hose pipes. Read more

MOPAR supplies the 4 Intercooler Air Hose / Pipe parts for the 2018 Jeep Wrangler.

This group includes MOPAR 5281505AC, MOPAR 5281505AD and MOPAR 5281953AA and the remaining parts above.

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

This group shows a single part: GPD 2611441.

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

15 Radiator parts are listed for the 2018 Jeep Wrangler, from GPD, MOPAR, TECHPRO and 9 other brands. CSF 3953 carries the "Popular" badge. 1 part fits every engine; the other 14 are engine-specific.

Economy: 4 parts, from GPD and TECHPRO. A representative part number is GPD 2957C.

The Standard Replacement section: 11 options from MOPAR, CSF, KOYORAD and 7 other brands. CSF 3953 is listed in this group.

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

2 Radiator Cap parts are listed for the 2018 Jeep Wrangler, from CALORSTAT and MOPAR.

This group includes CALORSTAT RC0151 and MOPAR 4596198.

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

This group shows a single part: DORMAN 61134.

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 2018 Jeep Wrangler come from 6 brands — TECHPRO, GPD, MOPAR and 3 other brands. The "Popular" part is TYC 624860.

The Economy section: 6 options from TECHPRO, GPD and DORMAN. DORMAN 621969 is listed in this group.

Standard Replacement: 4 parts, from MOPAR, TYC and AGILITY. A representative part number is TYC 624860.

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

17 Radiator Hose parts for the 2018 Jeep Wrangler come from 2 brands — MOPAR and GATES. The "Popular" part is GATES 52413. 2 parts fit every engine; the other 15 are engine-specific.

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 2018 Jeep Wrangler come from MOPAR.

This group includes MOPAR 52079884AA and MOPAR 52079419.

This table covers the seals at the Radiator. 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

4 Radiator Seal parts for the 2018 Jeep Wrangler come from MOPAR. 2 parts fit every engine; the other 2 are engine-specific.

This group includes MOPAR 68292728AA, MOPAR 68292729AA and MOPAR 55056553AA and the remaining parts above.

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

22 Temperature Sender / Sensor parts are listed for the 2018 Jeep Wrangler, from MOPAR, GPD, WALKER PRODUCTS and 6 other brands. DORMAN 926427 carries the "Popular" badge.

Economy: 6 parts, from GPD, DORMAN and VEMO. A representative part number is DORMAN 926427.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 21191074.

The Standard Replacement section: 15 options from MOPAR, WALKER PRODUCTS, WELLS and 3 other brands. DELPHI TS10546 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

7 Thermostat parts for the 2018 Jeep Wrangler come from 5 brands — MOPAR, MOTORAD, DORMAN and 2 other brands. The "Popular" part is MOPAR 4893926AH.

The Economy section: 2 options from DORMAN and SKP. DORMAN 9023113 is listed in this group.

Standard Replacement: 3 parts, from MOPAR, FOUR SEASONS and MOTORAD. A representative part number is MOPAR 4893926AH.

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

Listed part numbers: MOPAR 4893926AH, DORMAN 9023113 and SKP SK121424, plus the other parts above.

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

15 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2018 Jeep Wrangler, from FEL-PRO, MOPAR, APEX and 2 other brands. FEL-PRO 35974 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 2018 Jeep Wrangler come from 5 brands — AUTOTECNICA, VEMO, FOUR SEASONS and 2 other brands. The "Popular" part is AUTOTECNICA DG0714525.

The Economy section: 2 options from AUTOTECNICA and VEMO. AUTOTECNICA DG0714525 is listed in this group.

Standard Replacement: 3 parts, from FOUR SEASONS, MOPAR and MOTORAD. A representative part number is FOUR SEASONS 86336.

Listed part numbers: AUTOTECNICA DG0714525, VEMO V33990007 and FOUR SEASONS 86336, plus the other parts 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

16 Water Pump parts for the 2018 Jeep Wrangler come from 6 brands — MOPAR, FVP, US MOTOR WORKS and 3 other brands. The "Popular" part is GMB 1204040.

The Economy section: 2 options from FVP and US MOTOR WORKS. FVP US81992 is listed in this group.

Standard Replacement: 13 parts, from MOPAR, GMB, DAYCO and 2 other brands. A representative part number is GMB 1204040.

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

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

8 Water Pump Gasket parts are listed for the 2018 Jeep Wrangler, from MOPAR, ELRING, FEL-PRO and 1 other brand.

Part numbers include ELRING 107880, ELRING B21580 and FEL-PRO 36177, among others listed above.