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If you drive a Chevrolet Traverse, choosing the right oil cooler lines matters for engine longevity and reliable cooling under load. Worn or damaged lines can cause leaks, pressure loss, or contaminated oil circulation that affect performance and component life. This guide highlights six shortlisted oil cooler lines selected for fitment and durability. It explains the evaluation criteria used and what to watch for so you can pick the option that matches your repair or maintenance needs.
Looking for other parts? See all Chevrolet Traverse parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | A-Premium Transmission Oil Cooler Line Hose Assembly |  |
| Most Popular A crowd favorite that many people choose with confidence | A-Premium Engine Oil Cooler Line Hose Assembly |  |
| Best Budget The cheapest option that still gets the job done reliably | HZ-MONSTAR AN6 52" Stainless Steel Braided Transmission Cooler Line Kit |  |
| Most Sold A high-volume bestseller chosen again and again | DOVOSO Oil Cooler Hose Assembly (Replace Part No. 20828695) |  |
| Best Value for Money The sweet spot between price and what you get | American Volt Inline Oil Cooler Thermostat Switch with 6AN Threaded Adapter |  |
| Best Overall The best all-around choice for most situations | Generic 6AN 70" Stainless Steel Braided Transmission Cooler Line Kit |  |
1. A-Premium Transmission Oil Cooler Line Hose Assembly
| Material | Metal |
|---|---|
| Hose Maximum Pressure | 100 PSI |
| Fitment Type | Direct Replacement |
| Manufacturer Part Number | APOCL243 |
| OEM Part Number | 10353007, 15951955, 25796190, 25880047, 624-233, 624233, 5801492 |
This A-Premium transmission oil cooler line is a direct-replacement assembly meant to carry coolant from the radiator to the transmission on compatible GM crossovers. It is typically used when the original cooler line cracks, leaks, or corrodes and needs a one-for-one swap. The part is metal, fits specific Buick, Chevrolet, GMC, and Saturn models within the listed years, and is supplied with bends and end fittings to match factory routing. Buyers will appreciate that it installs like a factory-style line and addresses common failure points where the original tubing ages. Reported fitment is generally accurate for the stated vehicles, and the manufacturer backs the part with a one-year unlimited-mileage guarantee. Important limitations are that fit depends on selecting the correct inlet/outlet orientation and matching existing bends, and some users noted minor differences at the transmission connection that may require attention during installation. This is a practical repair part for those replacing a failed cooler line rather than an upgrade or performance modification.
Best for: A reliability-focused buyer who wants a practical, factory-style replacement to restore cooling to the transmission and minimize the chance of repeat leaks on daily-driver Chevy Traverse vehicles.
Less Ideal for: Not a good choice for someone seeking a performance upgrade, custom routing, or a universal adjustable line; installers who prefer complete OEM parts tracing may prefer dealer-sourced replacements.
- Direct-replacement design with factory-style bends and fittings for correct routing
- Metal construction suitable for resisting typical age-related corrosion
- Covers relevant model years for Chevrolet Traverse and related GM crossovers
- Backed by a one-year unlimited-mileage guarantee from the maker
- Fitment requires careful selection of the correct line and matching bends to the vehicle
- Some users reported a different transmission connection diameter compared with the original
Verdict A practical, factory-style metal cooler line that reliably replaces a failed unit for Chevrolet Traverse owners who prioritize restoring OEM routing and leak-free operation.
2. A-Premium Engine Oil Cooler Line Hose Assembly
| Brand | A-Premium |
|---|---|
| Material | Steel |
| Fitment Type | Direct Replacement |
| Manufacturer Part Number | APOCL130 |
This oil cooler line assembly replaces the factory line to restore oil flow between the engine and oil cooler. It is sold as a direct replacement and made from steel with corrosion-resistant construction, so it is meant to resist leaks and last under normal driving. Installation is a straightforward bolt-and-fit job for someone with basic mechanical skills, though some models can require working in tight spaces and an extra set of hands. Customer reports show generally good fit and leak-free service when the crimps and orientations are correct, but a few buyers noted crimp alignment problems that required adjustment. The part ships with reference OEM numbers for cross-checking and the manufacturer provides a one-year unlimited-mileage guarantee. If you need a factory-quality replacement line to get a cooled-oil circuit back to service quickly, this unit covers the basics; expect to inspect crimps and fittings during install and be prepared to rotate or reposition the line if routing does not match perfectly.
Best for: Convenience-driven buyers who want a ready-made, factory-style replacement part to get their vehicle back on the road quickly with minimal parts searching.
Less Ideal for: Drivers wanting an upgraded performance or braided aftermarket line for heavy towing or extended high-temperature use should consider purpose-built options instead.
- Direct-replacement fitment listed for many GM applications to simplify sourcing for repairs
- Steel construction with corrosion-resistant finish aimed at leak resistance
- Includes OEM reference numbers to verify compatibility before purchase
- Backed by a one-year unlimited-mileage manufacturer guarantee
- Some units have reported mis-crimped ends or incorrect orientation that can require adjustment during installation
- Not a direct discussion of fitment for Chevrolet Traverse in the listing; compatibility must be confirmed before ordering
Verdict A practical, steel direct-replacement oil cooler line for quick repairs, but check crimps and vehicle compatibility carefully before install.
3. HZ-MONSTAR AN6 52" Stainless Steel Braided Transmission Cooler Line Kit
| Brand | HZ-MONSTAR |
|---|---|
| Material | Stainless Steel braided over PVC liner |
| Nominal Wall Thickness | 0.1875 inches |
| Item Length | 52 Inches |
This HZ-MONSTAR AN6 line kit provides two flexible stainless steel braided hoses with multiple adapters for routing transmission cooler lines. It is typically used to replace rigid steel or factory rubber lines when adding an auxiliary cooler or repairing a leaky feed/return line on a vehicle. The braided exterior over a PVC inner liner gives abrasion resistance and better heat tolerance than plain rubber hose, and the kit includes AN6 inverted flare ends plus a selection of NPT adapters to fit different fittings. For Chevrolet Traverse owners looking for a low-cost upgrade, the kit makes plumbing an aftermarket cooler or replacing old lines straightforward and looks more durable under the hood. Limitations are that the kit is a universal-length solution rather than vehicle-specific so some trimming or fitting decisions are required, and installation may need basic tools and some plumbing skill to avoid leaks at adapter joints.
Best for: Budget-conscious buyers who want a cost-effective, more durable alternative to factory rubber cooler lines and plan to add or replace a transmission cooler on a Chevrolet Traverse.
Less Ideal for: Owners seeking a plug-and-play, vehicle-specific replacement with pre-bent lines or those uncomfortable with cutting, fitting, and sealing hoses should consider a factory-style replacement instead.
- Stainless steel braid improves abrasion resistance and engine-bay durability.
- Includes a variety of AN6 and NPT adapters to adapt to common cooler fittings.
- Flexible hoses simplify routing compared with rigid lines for aftermarket cooler installs.
- PVC inner liner compatible with transmission fluid and reduces permeation compared with simple rubber lines.
- Not a vehicle-specific pre-measured kit so may require trimming and extra fittings for a clean Chevrolet Traverse installation.
- Adapter joints mean more potential leak points if not tightened or sealed correctly.
Verdict A low-cost, flexible braided AN6 hose kit that upgrades durability and routing for a Chevrolet Traverse but requires some trimming and fitting work for a tidy install.
4. DOVOSO Oil Cooler Hose Assembly (Replace Part No. 20828695)
| Brand | DOVOSO |
|---|---|
| Material | Plastic, Rubber |
| Part Number | For 20828695 |
| Included Components | 1*Oil Cooler Hose Assembly |
This DOVOSO assembly replaces the factory oil cooler inlet and outlet lines and is intended to restore oil flow to the cooler on compatible GM vehicles. It combines rigid routed tubing with flexible rubber sections and ships as a single assembled line to swap in for a failed or leaking cooler hose. In practice the part is used when an original line cracks, leaks, or corrodes; installation typically requires lifting the vehicle and some bracket or trim work to access the routing. Customers report the fit is accurate on many vehicles and that included fittings and gaskets make the swap straightforward, but some units need slight bending or bracket adjustments to sit exactly like the factory piece. The material mix aims to resist heat and oil exposure, though it is not an OEM-branded line so long-term durability can vary. Expect a mechanically correct replacement that restores cooling circuit function quickly, with occasional fitment tweaking required on certain model years and configurations.
Best for: Risk-averse mainstream buyers seeking a straightforward replacement to regain oil cooler function without sourcing factory parts, and who prioritize a working, serviceable repair over aftermarket upgrades.
Less Ideal for: Buyers wanting guaranteed factory-identical fitment or those who prefer OEM-sourced parts with direct dealer backing should consider alternatives.
- Direct replacement assembly that includes fittings and gaskets for a single-piece swap.
- Combination of rigid and flexible sections preserves routing and resists vibration.
- Reported by multiple buyers to fit and perform well after installation.
- Made to handle engine oil temperatures and pressures for typical V8 applications.
- Some buyers needed to modify brackets or bend the lines for an exact fit on certain model years.
- Not an OEM-branded part so long-term reliability may differ from factory lines.
Verdict A ready-to-install replacement that restores oil cooler plumbing for compatible GM vehicles quickly, though occasional fitment adjustments may be required.
5. American Volt Inline Oil Cooler Thermostat Switch with 6AN Threaded Adapter
| Brand | American Volt |
|---|---|
| Model | AV-FXXTXX |
| Switch voltage | 12V |
| Thread connection | 6AN adapter option |
This inline thermostat adapter threads into an oil-cooler inlet and closes a 12V circuit when the fluid reaches the set temperature, intended to trigger an electric fan or relay. It is supplied with a black anodized aluminum AN fitting that resists corrosion and is described to measure oil, coolant, or water temperatures directly in the hose. Typical use is on an aftermarket oil cooler setup where you need a self-contained temperature switch to drive the cooler fan without tapping the vehicle harness. Practical benefits include a neat, threaded installation onto AN cooler fittings and the ability to select an on/off trip range suitable for heavy towing or towing-prone use on a Chevrolet Traverse. Limitations seen in user reports include inconsistent switching temperatures and a handful of units that failed to close the circuit or leaked; some buyers replaced the thermal element or used an alternate sender for greater reliability. Expect to verify fitment with your Traverse's cooler plumbing and consider using a robust external switch if precise calibration is critical.
Best for: A practical optimizer who wants an inexpensive, compact thermostat switch to control an aftermarket oil cooler fan on a Chevrolet Traverse and prefers a straightforward, in-line installation over complex wiring modifications.
Less Ideal for: Drivers who need laboratory-grade temperature accuracy or a guaranteed OEM-level thermal switch should choose a higher-spec external sender or hardwired fan controller instead.
- Threads directly onto AN-style cooler inlets for a tidy inline installation.
- Black anodized aluminum fitting resists corrosion in under-hood environments.
- Designed to switch a 12V accessory so it can directly trigger a fan or relay without extra sensors.
- Measures liquid temperature of oil, coolant, or water for flexible placement.
- Some units have inconsistent or inaccurate on/off temperatures compared with advertised values.
- A portion of user reports cite failures to complete the circuit or mechanical fragility of the thermal element.
- May require adapters or alternate senders to fit specific factory or aftermarket lines on a Chevrolet Traverse.
Verdict A budget-friendly inline thermostat adapter that offers a tidy, direct mount for Traverse oil cooler setups but may require verification or replacement of the thermal element for consistent operation.
6. Generic 6AN 70" Stainless Steel Braided Transmission Cooler Line Kit
| Material | Stainless Steel / PTFE |
|---|---|
| Size | 70 Inches |
| Fitting Type | 6AN (-6AN) |
This 6AN stainless steel braided line kit supplies two long 70-inch lines and assorted AN fittings intended to route transmission fluid between the transmission and an external cooler. For a Chevrolet Traverse the kit is typically used to add or replace transmission cooler plumbing when installing an auxiliary cooler or repairing damaged hard lines. The stainless braid over a PTFE core gives flexibility for tight routing while resisting abrasion and corrosion, and the included 90-degree fittings simplify connections in confined engine bays. In practice the kit helps lower transmission temperatures during towing or repeated highway runs, which can prolong transmission life. Expect to need a few vehicle-specific adapters for the Traverse if the factory fittings are different from -6AN thread types, and some buyers report occasional fitment or quality variances that require swapping a fitting or reworking threads. Installation is straightforward for anyone comfortable with basic fluid-line work, but check for leaks and proper routing after first drive to avoid chafing or pressure issues.
Best for: A balanced all-round buyer who wants a cost-effective way to add or replace transmission cooler lines on a Chevrolet Traverse to improve cooling for everyday driving and occasional towing.
Less Ideal for: Buyers seeking a direct factory-replacement line set with guaranteed plug-and-play factory fittings should consider vehicle-specific OEM-quality hoses instead.
- Stainless steel braid with PTFE core resists corrosion and stays flexible for tight routing.
- Includes 70-inch length suitable for reaching an auxiliary cooler from the transmission.
- Comes with multiple AN fittings including 90-degree swivels to simplify connections in confined spaces.
- Durable construction that can handle high fluid pressure when properly installed.
- Universal AN6 sizing may require vehicle-specific adapter fittings for proper connection to Traverse factory ports.
- Quality control varies between units so nuts/threads may need cleaning or replacement in some cases.
Verdict Good value braided 6AN cooler lines for a Traverse when you need flexible, corrosion-resistant plumbing, but expect to source adapters for exact factory fitment.
Choosing the Right Chevrolet Traverse Oil Cooler Lines: Key Factors to Consider
Fitment And Routing
Correct fitment ensures the lines follow the factory routing and clear adjacent components. Lines that conform to original routing reduce stress from bends and prevent chafing against brackets or suspension parts. If a line is too long or too short, it can kink or pull on fittings, increasing leak risk. Verify mounting points and routing paths so the line can be secured with the same clips or brackets where possible.
Material And Heat Resistance
Oil cooler lines run near hot engine areas and must resist high temperatures and exposure to motor oil. Materials like braided stainless steel over synthetic inner hoses or high-quality EPDM compounds typically offer better longevity than plain rubber. Higher heat resistance reduces the likelihood of swelling, cracking, or premature failure. Ask for temperature ratings and oil compatibility when evaluating options.
Fittings And Connection Type
Secure fittings are vital to prevent leaks at the ends of the lines. Look for factory-style threaded fittings, O-ring sealed connectors, or OEM-matching flared ends that mate cleanly with the engine and cooler ports. Properly matched fittings reduce cross-threading and ensure the correct sealing surface. Where adapters are used, ensure they are rated for oil service and do not alter pressure characteristics.
Durability And Corrosion Resistance
Corrosion-resistant outer layers and high-quality inner liners extend service life, especially where salt or moisture exposure is common. Stainless braid, corrosion-resistant clamps, and plated fittings help maintain integrity over time. Assess construction details like braid density and liner chemistry because these affect abrasion resistance and resistance to oil breakdown.
Installation Complexity And Hardware Included
Some lines come as complete hose kits with all required fittings and mounting clips, while others are sold as single pieces. Kits that include correct-length lines, clamps, and replacement gaskets usually simplify the job. Consider whether you will need special tools, flare nuts, or O-ring replacements. A line that matches factory attachment points and includes hardware reduces installation time and error risk.
Maintenance And Leak Diagnosis
Understanding common symptoms of failing oil cooler lines helps prioritize replacement timing. Signs include visible oil at connection points, drops in oil pressure, or oil pooling under the vehicle after parking. Choose lines that make future inspection and repair straightforward, such as accessible fittings and replaceable sections that do not require full-routed replacements.
FAQ
How do I know if my Chevrolet Traverse oil cooler lines are leaking?
You may notice oil spots where you park, wetness around the cooler or engine area, or a gradual drop in oil level between service intervals. In some cases, you might see oil on adjacent components or smell oil when the engine is hot. Visual inspection of fittings and hose sections is the first step to confirm a leak.
Can I replace just one oil cooler line or should I replace both feed and return lines?
Replacing only the failing line can be acceptable if the other line shows no signs of wear or damage. However, because both lines age together and share exposure to heat and oil, many people opt to replace both lines at the same time to minimize future labor and reduce the chance of a near-term failure on the remaining line.
What are common causes of oil cooler line failure on a Chevrolet Traverse?
Common causes include age-related material degradation from heat cycling, abrasion from contact with nearby components, corrosion of fittings, and damage from road debris. Improper installation or using incorrect fittings can also lead to premature leaks or failures.
Are aftermarket hose kits as reliable as OEM-style lines?
Aftermarket kits can be reliable when they match factory specifications for routing, fittings, and material ratings. The most dependable kits include vehicle-specific lengths, proper fittings, and clear material specs. Avoid universal hoses that require significant modification unless you plan additional professional fitting work.
What tools do I need to install or replace oil cooler lines?
Typical tools include basic hand tools like wrenches and socket sets appropriate to the fittings, line wrenches to avoid rounding flare nuts, and possibly pliers for clamps. You may also need replacement O-rings, gaskets, and thread sealants that are compatible with engine oil. Having replacement mounting clips can help restore secure routing.
How We Chose the Best Chevrolet Traverse Oil Cooler Lines
We focused on parts and kits that restore or improve the oil cooler circuit on Chevrolet Traverse vehicles. Our selection filters prioritized correct vehicle-specific fitment, robust materials resistant to heat and oil exposure, and secure connection methods that reduce leak risk. We also considered ease of installation for typical DIYers and the availability of necessary fittings or replacement components. Excluded items included universal lines without vehicle-specific adapters, components lacking clear material specs, and options intended only for racing or heavily modified engines. The main dimensions and specifications we used to judge suitability were line routing and length tolerance, hose material and temperature rating, connector and fitting type, and compatibility with the factory oil feed and return locations.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize fitment accuracy and durable materials when choosing oil cooler lines for a Chevrolet Traverse. Correct routing, matched fittings, and good heat resistance reduce leak risk and extend service life. Balance ease of installation and the availability of replacement hardware against long-term durability. Replacing both lines together and choosing options that simplify future inspection can reduce downtime and help maintain reliable oil cooling performance.
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