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If you drive a 2018-present Jeep Wrangler you know hot oil under load shortens engine life and reduces performance. An upgraded oil cooler helps control oil temperature during long highway pulls, towing, or sustained off-road runs so your engine maintains pressure and avoids thermal stress. This guide covers six thoroughly shortlisted oil cooler options selected for fitment with 2018-present Wrangler models, including common JL and JLU chassis considerations where relevant. We evaluated cooling capacity, construction quality, plumbing compatibility, and installation practicality to help you pick the right cooler for your use case. Read on for what mattered in our picks and how to choose the right setup for daily driving, towing, or hard trail use.
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Top Picks at a Glance
| Best Overall The best all-around choice for most situations | ShentwoZheng Oil Cooler 68314791AA for Jeep Gladiator and Wrangler 2018–2022 |  |
| Best Value The sweet spot between price and what you get | Sawyer Auto Replacement Oil Cooler for 3.6L V6 Jeep Wrangler/Gladiator (2019–2024) |  |
| Best Budget The cheapest option that still gets the job done reliably | AUTOBABA Aluminum Engine Oil Filter Housing with Oil Cooler Sensors and Gaskets |  |
| Highest Rated A top-rated pick with lots of positive feedback | Dorman 926-959 Aluminum Engine Oil Filter Housing with Oil Cooler and Filter |  |
| Most Popular A crowd favorite that many people choose with confidence | MNJWS Aluminum Oil Filter Housing and Oil Cooler Kit for 3.6L Pentastar |  |
| Best Seller A high-volume bestseller chosen again and again | keriolee Aluminum Engine Oil Cooler with Oil Filter Housing Adapter |  |
1. ShentwoZheng Oil Cooler 68314791AA for Jeep Gladiator and Wrangler 2018–2022
| Manufacturer | ShentwoZheng |
|---|---|
| Model | Oil Cooler |
| Exterior | Machined |
| Manufacturer Part Number | 68314791AA |
| OEM Part Number | 20414 SG000, 20414-SG000, 20414SG000 |
This ShentwoZheng oil cooler is a machined, direct-replacement unit intended for 2018–2022 Jeep Wrangler and Gladiator applications. It installs in place of the factory cooler to increase the oil cooling capacity and help maintain more consistent oil temperatures under towing, hauling, or spirited driving. The machined exterior suggests a sturdy construction and the unit uses the listed OEM part numbers for fitment, which simplifies sourcing and installation for a mechanically confident owner or a professional installer. Practical benefits include improved long-term oil life and reduced thermal stress on the engine during heavy use. Limitations are that the listing provides minimal technical detail such as cooling capacity, core design, or included hoses and fittings, so buyers should confirm whether any additional hoses, gaskets, or mounting hardware are required for their vehicle. Expect a straightforward swap when matching the stated part numbers and years, but plan for a shop visit if you want guaranteed fitment and leak-free installation.
Best for: Buyers who want a straightforward replacement oil cooler to restore or improve oil temperature control on mid-life Wrangler or Gladiator vehicles and who value a machined aftermarket unit that matches factory part numbers.
Less Ideal for: People looking for a high-performance, race-spec cooler with documented cooling performance or a complete plug-and-play kit including hoses and fittings should consider more fully specified aftermarket options.
- Designed to fit 2018–2022 Jeep Wrangler and Gladiator using listed part numbers
- Machined exterior indicates solid build quality compared with stamped units
- Direct-replacement form factor simplifies installation for a like-for-like swap
- Listing lacks detailed specs like cooling capacity and core type
- No information about included fittings, gaskets, or hose compatibility
Verdict: A machined, direct-fit replacement for 2018–2022 Wrangler and Gladiator owners who want a simple way to manage oil temperatures without changing vehicle plumbing.
2. Sawyer Auto Replacement Oil Cooler for 3.6L V6 Jeep Wrangler/Gladiator (2019–2024)
| Compatible engines | 3.6L V6 |
|---|---|
| Vehicle fitment | Jeep Wrangler and Gladiator 2019–2024 |
| Exterior | Machined |
| Manufacturer | Sawyer Auto |
This Sawyer Auto oil cooler is a direct-replacement unit made to match factory mounting and hose connections for 3.6L V6 Jeep Wrangler and Gladiator engines (2019–2024). It cools engine oil through aluminum fins and a durable housing to help maintain proper lubrication and prevent overheating of transmission or engine oil circuits. Installation uses factory mounting points and standard hand tools, so most mechanically comfortable owners or professional installers can swap it in without modifying lines. The listing notes quality checks for sealing and fit, which reduces the chance of leaks after installation. Limitations are that it is a like-for-like replacement rather than a performance upgrade, so it will not increase cooling capacity beyond factory levels; buyers replacing a failing cooler for better cooling under heavy towing or off-road use may need a higher-capacity aftermarket option. Verify engine displacement and model year before purchase to ensure correct fitment.
Best for: Buyers who prioritize a practical, reliable replacement to restore factory oil cooling function on a 3.6L V6 Jeep Wrangler or Gladiator with minimal fuss and straightforward installation.
Less Ideal for: Drivers seeking increased oil cooling capacity for heavy towing, track work, or extreme off-road modification should consider a high-performance aftermarket cooler instead.
- Direct-fit design that uses factory mounting points for straightforward installation
- Aluminum cooling fins and durable housing that restore oil cooling and help prevent leaks
- Quality-checked for sealing and fit to reduce post-installation issues
- Provides factory-level cooling only and is not a high-capacity upgrade for heavy-duty towing or extreme off-road use
Verdict: A practical, direct-fit replacement that restores factory oil cooling for 3.6L V6 Jeep Wrangler and Gladiator models without modification.
3. AUTOBABA Aluminum Engine Oil Filter Housing with Oil Cooler Sensors and Gaskets
| Material | Metal |
|---|---|
| Vehicle Service Type | Cars, SUVs, Trucks |
| Thread Size | M16 x 1.5 |
| OEM Part Number | 5184294AC |
This AUTOBABA aluminum oil filter housing replaces the factory plastic housing and integrates an oil cooler with temperature and pressure sensors, targeted at 3.6L Pentastar V6 engines from 2017–2018. It ships as a complete kit with the filter, sensors, O-rings, gaskets, and mounting hardware so you can swap the whole assembly in one job. The aluminum construction resists cracking and leaking that commonly plague plastic housings, and users report straightforward installs and long-term durability. Built-in sensors let the engine management keep accurate oil temperature and pressure readings without transferring parts from the old housing. Limitations are typical of aftermarket replacements: fit and finish vary slightly from factory parts so careful installation is recommended, and warranty/support is limited to the seller's one-year coverage. For DIY installers this kit reduces parts hunting and should correct oil leaks tied to the original plastic housings, but professional installation is advised if you are not comfortable with sensor connections and torque specs.
Best for: Buyers looking to repair a leaking or broken oil filter housing on a 2017–2018 Pentastar 3.6L engine who want a durable, all-in-one replacement without buying individual parts.
Less Ideal for: Those who prefer dealer parts coverage or who need a multi-vehicle universal solution should consider factory replacements or other aftermarket options.
- Full aluminum housing reduces risk of cracking and oil leaks compared with the original plastic unit
- Includes oil filter, pressure and temperature sensors, O-rings, gaskets, and mounting bolts for a one-stop replacement
- Pre-installed components simplify installation and cut time spent sourcing parts
- Designed specifically for 2017–2018 Pentastar 3.6L V6 applications so fitment matches that vehicle scope
- Aftermarket fit and finish can differ from factory parts so careful installation and checking for leaks is necessary
Verdict: A cost-conscious, ready-to-install aluminum replacement that fixes common oil-leak failure points and includes all sensors and seals for 2017–2018 Pentastar 3.6L engines.
4. Dorman 926-959 Aluminum Engine Oil Filter Housing with Oil Cooler and Filter
| Material | Aluminum |
|---|---|
| Product Grade | Replacement Part |
| Vehicle Service Type | Car, Truck, Van |
| Automotive Fit Type | Universal Fit |
This Dorman kit replaces the plastic oil filter housing used on many Pentastar V6 engines with a patented die-cast aluminum housing and includes the oil cooler, oil filter element, filter cap, and required gaskets. It is intended to stop recurring leaks and warping that occur with the factory plastic unit, so you get a longer-lasting repair and fewer return visits. The kit arrives ready to install and saves time by bundling mounting gaskets and hardware; reviewers report improved oil pressure and elimination of coolant-to-oil leaks after installation. Build quality is generally solid, although a few users found casting burrs or manufacturing defects that required inspection or minor clean-up before fitting. The kit does not include engine sensors, so plan to reuse or separately replace pressure and temperature sensors as needed. Installation can be involved because of the cooler location, so a professional or confident DIYer with the right tools should avoid rushed assembly and verify all oil passages are clear before first start.
Best for: Buyers who prioritize a long-term, reliability-first repair for Pentastar V6 engines and want a complete replacement that eliminates recurring leaks from the plastic housing.
Less Ideal for: Those seeking a plug-and-play, sensor-included kit or buyers unwilling to inspect and prep the casting before installation should consider other options or professional fitting.
- Die-cast aluminum housing reduces warping and is more durable than the original plastic design
- Includes oil cooler, oil filter element, cap, gaskets and mounting hardware for a complete repair
- Engineered to update early fitments to the latest filter specification to help prevent future leaks
- Many installers report restored oil pressure and elimination of coolant contamination after replacement
- Some units have casting burrs or blocked oil passages that require inspection and possible cleanup before installation
- Sensors are not included so oil pressure or temperature sensors may need to be purchased separately
Verdict: Choose this aluminum Dorman oil filter housing kit when you want a durable, reliability-focused replacement that fixes the common plastic-housing leaks on Pentastar V6 engines.
5. MNJWS Aluminum Oil Filter Housing and Oil Cooler Kit for 3.6L Pentastar
| Material | Aluminum |
|---|---|
| Thread Size | M16 x 1.5 |
| Vehicle Service Type | Jeep Wrangler 3.6L (2012-2024) |
This aluminum oil filter housing and oil cooler kit replaces the factory plastic assembly on 3.6L Pentastar engines to stop leaks and improve heat resistance. It is a direct replacement designed for 2012–2024 Jeep Wrangler 3.6L and arrives as a complete assembly with gaskets, bolts, and some sender provisions. In practice the aluminum construction resists warping and corrosion better than the original plastic housings, which can reduce recurring leaks and the need for frequent repairs. Install is straightforward for a competent DIYer or mechanic and reviewers report the part fits well and often includes an oil filter and hardware. Pay attention to the sensors and supplied senders because a few users found the included sensors or oil filter were incompatible or poor quality; you may need to reuse original senders or fit a different oil filter. If a shop is doing the work, be aware some shops will not warranty labor when customer-supplied parts are used.
Best for: Buyers who prioritize a durable, long-lasting repair to stop recurring oil-housing leaks on 3.6L Wrangler engines and who value social proof from other owners who successfully installed the aluminum upgrade.
Less Ideal for: If you expect a fully plug-and-play kit with every sensor and a high-quality oil filter included, or you plan to have a shop install the part and rely on the shop warranty for supplied parts, this may not be the best choice.
- Aluminum construction improves heat resistance and reduces risk of warping compared with factory plastic housings.
- Sold as a complete kit with gaskets, bolts, and hardware to simplify replacement.
- Direct-fit design for 3.6L Pentastar Wrangler applications minimizes modification during installation.
- Frequently reported to stop oil leaks and restore proper oil routing when installed correctly.
- Some included sensors or the supplied oil filter may not match vehicle fittings and could require reusing factory sensors or buying replacements.
- A few buyers reported quality-control issues with supplied sensors leading to diagnostic trouble codes after installation.
Verdict: If you want a stronger, longer-lasting replacement to stop oil leaks on a 3.6L Wrangler, this aluminum housing kit is a practical upgrade proven by many owners.
6. keriolee Aluminum Engine Oil Cooler with Oil Filter Housing Adapter
| Brand | keriolee |
|---|---|
| Material | Aluminum |
| Product Grade | Performance Part |
| Automotive Fit Type | Vehicle Specific Fit |
| Model | for 2017-2018 Jeep Wrangler Ram 1500 |
This keriolee aluminum oil cooler replaces the common plastic filter housing with a metal assembly that combines the oil cooler and filter adapter into one unit. It is intended as a direct-fit replacement for the listed 3.6L V6 applications and arrives with the filter and some sensors preinstalled to simplify installation. In use it cools and filters engine oil to reduce operating temperature and help extend oil and engine life, which is especially helpful on tow-heavy or hot-weather driving. The aluminum construction resists cracking that plagues plastic housings and reviewers report straightforward installations and no leaks when gaskets and mating surfaces are kept clean. Notable limitations are occasional fitment mismatches with sensor connectors and at least one report of a cracked unit out of the box, so check connections and inspect for damage during install. This part is best fitted by someone comfortable verifying sensor fit and torqueing fittings to prevent leaks.
Best for: Buyers who prioritize a more durable, factory-replacement style oil cooler to avoid the common failure of plastic housings and who want a near-ready assembly to reduce installation steps.
Less Ideal for: People who need guaranteed perfect connector compatibility without verification or those unwilling to inspect and test the part at install should consider dealer or higher-end OEM replacements.
- Aluminum construction more durable than original plastic housings
- Includes preinstalled oil filter and some sensors for quicker installation
- Direct-fit, vehicle-specific design intended to replace the original assembly
- Helps lower oil temperature and keep oil cleaner under load or heat
- Some users reported connector or seal fitment issues and at least one broken unit on arrival
Verdict: If you want a stronger, aluminum replacement that lowers oil temps and minimizes the plastic-housing failure risk, this direct-fit keriolee assembly is a practical upgrade.
Choosing the Right 2018-Present Jeep Wrangler Oil Cooler: Key Factors to Consider
Cooling Capacity and Core Design
Cooling capacity determines how much the oil cooler will lower oil temperature under real-world loads. Look at core size, the number of cooling rows, and fin density; larger cores or multi-row designs typically move more heat but need room for mounting. For Wrangler owners who tow or drive at sustained highway speeds, a higher-capacity core reduces the risk of oil overheating and thermal breakdown. Core design also affects airflow and fan compatibility. A compact but dense core can provide good cooling with limited frontal area, which matters for Jeep bumpers and grille clearance. Consider whether the cooler will sit in the vehicle's airstream or rely on auxiliary fans, since installation location and airflow significantly affect real-world performance.
Fitment and Chassis Compatibility
Correct fitment for the 2018-present Wrangler is essential to avoid costly modifications. Account for JL and JLU frame differences when evaluating mounting brackets and hose routing. Some coolers are designed for direct bolt-on installation, while others require adapter fittings or custom brackets. Plan for clearance around the front bumper, skid plates, and suspension components. Proper fitment reduces installation time and the likelihood of rubbing or damage when off-roading. Verify mount points and bracket orientation to make sure the cooler will not interfere with factory components or steering travel.
Materials, Build Quality, and Corrosion Resistance
Durable materials extend service life in harsh environments. Aluminum cores are common because they balance heat transfer and weight, but quality matters: extruded and brazed cores resist vibration and impact better than cheaper plate constructions. Check for quality fittings and stainless or nickel-plated hardware to limit corrosion, especially if you drive in salty or wet environments. Welds, brazing, and the quality of hose barb fittings influence long-term leak resistance. For owners who frequently cross streams or encounter mud and debris, impact-resistant housings and protective screens are beneficial to avoid punctures and maintain performance.
Plumbing Compatibility and Hose Routing
Compatibility with existing oil lines and the availability of correct adapters are key to a straightforward installation. Some coolers reuse factory lines and require only an adapter, while others supply dedicated oil cooler lines that need routing under the vehicle or behind the bumper. Hose length, routing, and bend radius affect both leak risk and oil pressure behavior. Proper routing keeps hoses clear of hot exhaust components and moving suspension parts. Use quality crimped hoses or factory-equivalent lines when possible, and account for additional fittings or banjo bolt adapters that might be needed for a full installation.
Leak Resistance and Serviceability
Oil cooler leaks are a safety and reliability concern. Look for coolers with reliable sealing systems, quality fittings, and options for replaceable cores or serviceable components. Cores that can be serviced or swapped reduce long-term maintenance costs and downtime. Consider how easy it is to access the cooler and connections for inspection. For owners who regularly inspect gear before trips or who travel off-road, being able to visually check fittings and quickly tighten or replace hoses is an important practical benefit.
Intended Use: Towing, Off-Roading, or Daily Driving
Match the cooler to your expected use. Towing heavy loads or frequent high-speed highway driving demands higher cooling capacity and possibly larger cores. Off-road use favors compact, robust designs with protective mounting and lower exposure to debris. Daily drivers with occasional light towing may prioritize simpler bolt-on installations and minimal modification. Think through how often you tow, the typical ambient temperatures you operate in, and whether you plan additional engine performance modifications that could raise oil temperatures.
JL and JLU Chassis Notes for 2018-Present Wranglers
The 2018-present Wrangler lineup spans multiple generations in owner discussions, with JL and JLU commonly referenced for later model years and JL and JLU for earlier years. When planning an oil cooler upgrade, verify whether the mounting points and bumper geometry on your specific chassis require different brackets or slight hose routing changes.
Common differences include front fascia clearance and underbody skid plate layouts. These physical differences can affect whether a large core fits directly in the airstream or must be relocated to a lower position with an auxiliary fan. Confirm chassis-specific fitment data before purchasing or fabricating mounts.
- Check bumper type and skid plate clearance before selecting core size
- JL and JLU models may have different bracket locations compared to older JKs
- Smaller cores can work with supplemental fans if frontal space is limited
Mounting Options and Bracket Types
Mounting choices influence installation complexity and protection. Direct bumper or grille-mounted brackets expose the core to the most airflow but also to trail debris. Lower skid-plate or behind-bumper mounts offer protection but reduce passive cooling and may require auxiliary fans.
Consider brackets that allow the cooler to be tucked behind a recovery point or protected by a light bar crossmember. A solid bracket system shortens install time and reduces vibration-related stress on fittings.
- Grille-mounted: best airflow, higher exposure
- Skid/behind-bumper: better protection, reduced airflow
- Universal brackets can work but check chassis alignment
Hose and Adapter Choices
Choosing the right hose and adapter setup is crucial for leak-free operation. OEM-style crimped hoses provide excellent reliability, while reusable braided hoses offer flexibility for custom routing. Ensure fittings match the Wrangler's oil filter housing or block adapter threads to avoid last-minute trips to the parts store.
Adapter plates can simplify integration with the factory oil filter location, but check torque specs and sealing surfaces during installation. Use new crush washers or O-rings as recommended to prevent leaks.
- Prefer crimped hoses for long-term reliability
- Match adapter threads and gasket type to the engine housing
- Keep hoses away from exhaust and sharp edges
Protecting the Cooler From Trail Damage
Trail hazards like rocks and brush make protection a priority. Consider a protective screen, low-profile core, or a mount behind a reinforced bumper to reduce the chance of punctures. If you frequently run tight trails, a smaller, well-protected cooler may be preferable to a large exposed core.
Regular inspection is also part of protection. Check for bent fins, impact damage, and loose fittings after off-road trips. Replacing a damaged core early prevents oil contamination and longer-term engine damage.
- Install protective screens or guards when possible
- Inspect core and fittings after off-road use
- Prefer mounts that reduce exposure to direct strikes
Cooling System Integration and Engine Health
An oil cooler interacts with the engine lubrication system. A properly sized cooler reduces oil temperature without causing excessive pressure drop. Watch for symptoms such as fluctuating oil pressure or longer warm-up times that can indicate an incompatible cooler or improper hose diameter.
If you are adding other performance modifications that raise engine heat, make sure the oil cooler selection complements those changes. Proper integration preserves sealing surfaces and ensures consistent oil flow to critical bearings and components.
- Avoid excessive pressure drop by matching hose diameter to factory specs
- Monitor oil pressure and temperature after installation
- Coordinate cooler upgrades with other engine cooling changes
Still looking for the perfect fit?
Select your Jeep Wrangler configuration to see the most relevant Oil Coolers recommendations
How We Chose the Best 2018-Present Jeep Wrangler Oil Cooler
We applied a focused editorial framework to identify oil coolers that provide durable, effective cooling for 2018-present Jeep Wrangler engines. First, we prioritized verified fitment to the Wrangler chassis used in this year range, accounting for common JL and JLU mounting points and hose routing. Second, cooling performance was evaluated based on core design, number of rows or fins, and advertised flow capacity to ensure meaningful oil temperature reduction under load. Third, materials and construction were assessed for corrosion resistance and impact durability, emphasizing aluminum cores and robust fittings suitable for off-road use. Fourth, compatibility with stock oil lines and common upgrade lines, adapter availability, and ease of plumbing were considered to limit modification complexity during installation. Fifth, serviceability and repairability were weighed, including whether replacement cores or replacement lines are commonly available. We excluded options that lacked clear fitment data for the 2018-present Wrangler, had poor user reports of leaks, or required extensive custom fabrication incompatible with most owners. The resulting list focuses on products that balance cooling performance, durability, and realistic installation for typical Wrangler owners.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I tell if my Wrangler needs an oil cooler replacement?
Watch for oil temperature spikes under load, persistent low oil pressure, visible oil leaks, or contamination near the cooler fittings. Oil cooler leak symptoms often include oil drips under the bumper or a noticeable drop in oil level between checks. If you see any of these signs, inspect the cooler and hoses promptly and plan a replacement if damage or persistent leaks are found.
Can I install an oil cooler myself on a 2018-present Wrangler?
Many owners with basic mechanical skills can handle installation, especially when the cooler is designed for direct bolt-on fitment. You will need basic tools, a torque wrench, and proper sealants or crush washers. More complex installs that require routing new lines or modifying bumpers may be better handled by a shop to ensure leak-free connections and correct hose routing.
Will adding an oil cooler change oil change intervals?
Adding a cooler does not usually change the manufacturer's oil change interval directly, but maintaining proper oil temperature can reduce thermal degradation and potentially extend effective oil life in high-load use. Still follow manufacturer service intervals and monitor oil condition; heavy-duty or severe-use schedules may still apply.
Are transmission oil coolers necessary if I already have an engine oil cooler?
Transmission and engine oil coolers serve different fluids and functions. An engine oil cooler helps regulate engine oil temperature, while a transmission oil cooler is specific to ATF or transmission fluid. For heavy towing or when transmission temperatures run high, a separate transmission cooler remains advisable even if the engine oil cooler is upgraded.
What are common oil cooler leak symptoms to watch for after installation?
After installation, look for wet fittings, oil spots beneath the vehicle, or a sudden drop in oil level. You may also notice a burning oil smell if oil contacts hot exhaust. Tighten fittings to spec and recheck after a short drive. Persistent leaks usually indicate damaged hoses, improperly seated seals, or a cracked core.
How much does oil cooler installation typically cost?
Installation cost varies depending on whether the unit is a direct bolt-on or requires additional brackets and line fabrication. Simple bolt-on installs are less expensive and often take a few hours, while custom routing, adapter use, or bumper modifications increase labor time. Get an estimate from a qualified shop if you prefer professional installation.
Final Verdict
Prioritize a cooler that matches the demands of how you use your 2018-present Jeep Wrangler. For frequent towing or long highway runs choose higher-capacity cores and ensure robust hose and adapter compatibility. For trail-focused use prioritize protection and a compact layout that resists impacts. Balance cooling performance with fitment and leak resistance when deciding. Focus on core design, durable materials, and correct plumbing to achieve reliable oil temperatures without introducing pressure or sealing issues. With those tradeoffs in mind you can confidently select an oil cooler that extends engine life and suits your Wrangler driving style.
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