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If you drive a GMC Acadia, the condition of the oil cooler lines matters for engine temperature control and long-term reliability. Worn or leaking lines can reduce cooling efficiency and create a mess, while properly fitted replacements restore consistent oil flow and lower the risk of overheating.This guide presents the top shortlisted options for GMC Acadia oil cooler lines, selected for their compatibility and construction. We evaluated candidates for durability and ease of installation to help you pick the best fit for routine maintenance or repair.
Looking for other parts? See all GMC Acadia parts & accessories.
Top Picks at a Glance
| Best overall The best all-around choice for most situations | Generic Stainless Steel Braided AN6 Transmission Cooler Line Kit, 52" |  |
| Best Value The sweet spot between price and what you get | A-Premium Transmission Oil Cooler Line Assembly for GMC Acadia 2.5L (2017–2019) |  |
| Best Budget The cheapest option that still gets the job done reliably | Psrorkeu Transmission Oil Cooler Line (624-233) for GMC Acadia 2007-2019 |  |
| Highest Rated A top-rated pick with lots of positive feedback | A-Premium Inlet Transmission Oil Cooler Line Hose Assembly |  |
| Best Seller A high-volume bestseller chosen again and again | EVIL ENERGY 3/8" Transmission Oil Cooler Hose, 5 ft, SAE J1532 |  |
1. Generic Stainless Steel Braided AN6 Transmission Cooler Line Kit, 52"
| Material | Stainless Steel and PTFE |
|---|---|
| Size | 52inch |
| Nominal Wall Thickness | 0.0625 inches |
| Outside Diameter | 0.38 Inches |
This AN6 transmission cooler line kit provides a ready-made stainless steel braided hose solution for adding or replacing transmission cooler plumbing on a GMC Acadia with compatible fittings. It includes PTFE-lined, stainless-braided hoses and multiple AN fittings and 90-degree adapters so you can route lines from the transmission to an auxiliary cooler or factory cooler. In practice the kit speeds installation for owners who want a corrosion-resistant, flexible hose that holds pressure and resists kinks compared with stock rubber lines. Users report the lines fit common GM transmissions and that the kit simplifies building a cooler loop for towing or heavy city driving. Limitations: the kit is a universal AN6 setup so you may need extra adapters or different fittings to match Acadia factory ports, and quality control appears mixed across batches so inspect connections and test for leaks before finishing the job. Expect to source a couple of vehicle-specific fittings for a perfect, leak-free hookup on the Acadia.
Best for: Convenience-driven owners who want a ready kit to add a transmission cooler or replace aging cooler lines on a GMC Acadia without fabricating hoses from scratch.
Less Ideal for: Owners who prefer a vehicle-specific factory-quality replacement or those unwilling to buy any extra adapters should look for a model-specific kit or have hoses built locally.
- Stainless steel braid with PTFE inner hose offers corrosion resistance and flexibility compared with rubber lines.
- Includes AN6 fittings and 90-degree adapters to simplify routing to an aftermarket cooler.
- Long lengths allow routing to an auxiliary cooler without splicing for many installations.
- Hoses are reported to handle high pressure and towing-related heat loads when installed correctly.
- Universal AN6 fittings may not match GMC Acadia factory ports and can require additional adapters.
- Quality control is inconsistent across units so some buyers reported leaks or incorrect lengths on arrival.
Verdict: A convenient, corrosion-resistant AN6 braided hose kit that speeds installation for adding a transmission cooler to a GMC Acadia but may require vehicle-specific adapters and inspection for fitment.
2. A-Premium Transmission Oil Cooler Line Assembly for GMC Acadia 2.5L (2017–2019)
| Material | Steel |
|---|---|
| Fitment Type | Direct Replacement |
| Gasket or Seal Included | No |
| Manufacturer Part Number | APOCL364 |
| OEM Part Number | 23167272, 5801959 |
This A-Premium oil cooler line is a direct-replacement assembly intended for GMC Acadia models with the 2.5L engine and 6T50 6-speed transaxle, routing transmission fluid between the transaxle and the cooler. It is made of steel with corrosion-resistant construction, which helps prevent leaks and holds up under normal engine-bay conditions. Installation is typical for cooling-line swaps: disconnect the old line, transfer fittings, and mount the new hose with factory fasteners; no gasket or seal is included so plan to reuse or source seals as needed. The part lists OEM reference numbers 23167272 and 5801959, which simplifies verifying fitment, and the seller backs it with a one-year unlimited-mileage guarantee. Expect a straightforward fix for a leaking or damaged line, but allow time for careful routing and torqueing of fittings to avoid fluid loss during installation.
Best for: Practical optimizers who want a low-cost, factory-style replacement for a leaking or damaged transmission cooler line on a 2017–2019 GMC Acadia 2.5L and value straightforward repairability and a backed part.
Less Ideal for: Drivers seeking a performance or upgraded stainless-steel braided line or those with different Acadia engines or transaxles should look for other options.
- Steel construction offers corrosion resistance and structural durability for long service life
- Direct replacement fitment for select 2017–2019 GMC Acadia 2.5L models with 6T50 transaxle
- Includes OEM reference numbers to simplify part confirmation during purchase
- One-year unlimited-mileage guarantee provides added post-installation confidence
- No gasket or seal included so additional parts may be required at installation
- Fitment limited to specific Acadia 2.5L / 6T50 combinations and requires verification
Verdict: A cost-conscious, factory-style steel replacement cooler line that matches OEM references and simplifies repair for compatible 2017–2019 GMC Acadia 2.5L models.
3. Psrorkeu Transmission Oil Cooler Line (624-233) for GMC Acadia 2007-2019
| Item Type | Oil Cooler Line |
|---|---|
| Condition | Brand New |
| OE Number | 624-233, 5801492, 25880047 |
| Quantity Sold | One Piece |
This Psrorkeu transmission oil cooler line is a budget-friendly replacement intended for GMC Acadia model years 2007 through 2019. It replaces the factory line that runs between the radiator lower outlet and the transmission, restoring proper fluid circulation to the transmission cooler to help prevent overheating. The unit ships as a single, pressure-tested line with crimped fittings to reduce the risk of leaks and is marketed as brand new with factory-style connection points for straightforward installation. Its main benefit is preventing fluid loss and protecting the transmission from high-temperature damage without the premium price of an OEM part. Limitations include the need to verify OE numbers and compare photos before buying because fitment differs across years and engine configurations, and as an aftermarket budget part it may not match OEM finish or long-term durability in heavy-duty use compared with higher-end replacements.
Best for: Budget-conscious owners focused on restoring transmission cooling and preventing overheating without paying for a premium OEM part.
Less Ideal for: Drivers who need a dealer-level factory part or who plan heavy towing and want the longest-lasting, high-end materials should consider higher-grade replacements.
- Direct-fit replacement for GMC Acadia 2007-2019 model years covered by the listing
- Pressure-tested with crimped fittings to help ensure a leak-free connection
- Sells as a single complete line for quick replacement during transmission service
- Aftermarket budget construction may not match the long-term durability or finish of factory-quality parts
Verdict: A cost-effective, pressure-tested replacement line that restores transmission cooling for GMC Acadia models from 2007 to 2019.
4. A-Premium Inlet Transmission Oil Cooler Line Hose Assembly
| Fitment | GMC Acadia 2007-2019 (varies by year; inlet from radiator lower) |
|---|---|
| Material | Metal and hose assembly |
| Hose maximum pressure | 100 PSI |
| Manufacturer part number | APOCL243 |
This A-Premium inlet transmission oil cooler line replaces the factory inlet hose on compatible GMC Acadia models and routes transmission fluid from the radiator lower connection to the transmission. Built as a direct replacement, the assembly combines metal tubing with a hose section and is intended for straightforward swap-in installation where the original line has corroded or leaked. Notable features include listed OEM reference numbers for cross-checking fit, a stated maximum hose pressure of 100 PSI, and a one-year unlimited-mileage guarantee from the maker. In practice this part is used when a leaking or damaged cooler line causes fluid loss or overheating risk; buyers report that bends and connections match factory routing for easy fitment on Acadia applications. Limitations to consider are that differences in the tube end geometry versus some originals were reported by a few users, and using a replacement line still requires careful inspection of fittings and clamps to avoid leaks after installation.
Best for: Reliability-focused buyers who prioritize a dependable, factory-style replacement to restore the transmission cooling system and avoid future leaks.
Less Ideal for: Drivers seeking a universal or multi-vehicle solution or those who prefer a full kit with extra fittings and clamps should consider other options.
- Direct-replacement design intended to match factory routing for easier installation on compatible GMC Acadia models
- Includes OEM reference numbers to verify correct fit before purchase
- Metal tubing plus hose section provides rigidity where needed and flexible connection at the radiator or transmission
- Stated hose maximum pressure of 100 PSI suitable for normal transmission cooling system pressures
- Some users noted minor differences at the transmission connection which may require attention during installation
- Does not include vehicle-specific installation hardware such as clamps or additional fittings
Verdict: A practical, reliability-minded direct-replacement inlet cooler line for GMC Acadia owners needing a factory-style fix to transmission cooling leaks.
5. EVIL ENERGY 3/8" Transmission Oil Cooler Hose, 5 ft, SAE J1532
| Material Type | Chlorinated Polyethylene (Cpe) |
|---|---|
| Specification | SAE J1532 |
| Working Pressure | 250psi |
| Burst Pressure | 1000psi |
| Temperature Range | -40°F to 257°F |
This EVIL ENERGY 3/8" transmission oil cooler hose is a flexible replacement line intended to connect an oil cooler to a transmission or cooler loop. Made from chlorinated polyethylene (CPE) and built to SAE J1532, it is rated for a 250 psi working pressure and a 1000 psi burst pressure, so it suits typical passenger-car cooler circuits. The hose tolerates a wide temperature range from -40°F to 257°F and resists oil and heat, which helps maintain service life under everyday driving and light towing. Its 85.5 mm minimum bend radius lets you route the line in tight engine bays without kinking if installed with reasonable radii. Trade-offs are that this is a raw hose without fittings or preformed ends, so installation requires clamps or fittings and some trimming for a proper fit, and the generic fit means you must verify connectors for a Scion xB application. For reliability-focused buyers who want a durable, factory-quality replacement hose, this is a straightforward, well-specified option when paired with the correct fittings and careful installation.
Best for: Reliability-focused DIY owners who prioritize a durable, factory-spec replacement hose for oil cooler circuits and are comfortable adding fittings and making precise installations.
Less Ideal for: Buyers seeking a complete plug-and-play assembly with factory-matched fittings or a vehicle-specific preformed line should consider purpose-made kits instead.
- Constructed from CPE for good oil and heat resistance.
- SAE J1532 specification with 250 psi working and 1000 psi burst pressure.
- Wide operating temperature range for durability in varied climates.
- 5-foot length provides flexibility for routing and replacements.
- Sold as bare hose without fittings or preformed ends, requiring additional clamps or connectors.
- Generic hose requires checking connector compatibility for Scion xB applications.
Verdict: A heavy-duty, SAE-rated 3/8" oil cooler hose built for reliable, heat- and oil-resistant service when fitted correctly.
Choosing the Right GMC Acadia Oil Cooler Lines: Key Factors to Consider
Material and Heat Resistance
Oil cooler lines must withstand high temperatures and prolonged exposure to engine oil. Lines made from high-grade materials and reinforced hose constructions resist softening, cracking, and premature failure under thermal stress. Metal or braided hose assemblies often provide better long-term dimensional stability and lower permeation than basic rubber, which matters when lines run near hot engine components.
Choosing a material with proven heat and oil resistance reduces the chance of leaks, swelling, or hose collapse. Consider how the material performs over time in stop-and-go traffic, towing, or towing-equivalent loads that raise oil temperature.
Fitment and Compatibility
Correct fitment is critical for leak-free seals and proper routing. Lines designed specifically for the GMC Acadia will match attachment points, bends, and mounting brackets to avoid strain and chafing. A direct-fit assembly minimizes the need for clamps, adapters, or custom routing, which simplifies installation and lowers the risk of future failures.
Verify that replacement lines align with factory connection types and bracket locations. Poor fitment can cause rubbing against other components, leading to wear and eventual leaks.
End Fittings and Sealing
The quality of the fittings and sealing surfaces determines how well the line resists leaks. Precision-machined fittings, crush-style fittings, or properly sized O-ring interfaces create reliable seals when torqued to specification. Fittings should also be corrosion resistant to maintain sealing integrity over time.
Inspect compatibility with the vehicle's feed and return ports and verify whether replacement parts include necessary seals or require reuse of OEM seals. Proper torque values and clean mating surfaces are essential for a leak-free connection.
Corrosion and Abrasion Protection
Exposure to road salt, moisture, and debris can corrode metal fittings and abrade hose surfaces. Protective coatings, braided outer layers, or routed shielding help prevent damage from external elements and prolong service life. Lines routed without adequate protection are more likely to develop leak points where abrasion occurs.
Choose options with visible abrasion resistance measures or plan for additional shielding in vulnerable sections. Regular inspections are still important, especially after driving on salty or rough roads.
Serviceability and Maintenance
Consider how easy the lines are to inspect, access, and replace in the future. Assemblies that allow partial replacement or use standard fittings make routine maintenance and repairs faster and less costly. Clear access to connection points and straightforward routing reduce labor time during replacement.
Also factor in the availability of replacement seals, clamps, and hardware. Parts that require special tools or hard-to-find components can complicate future repairs.
How We Chose the Best GMC Acadia Oil Cooler Lines
We focused on components and assemblies specifically suited to the GMC Acadia and prioritized real-world durability and installation clarity. Key evaluation criteria included material construction and resistance to heat and oil exposure, the compatibility and accuracy of vehicle fitment, the quality of end fittings and sealing surfaces, and serviceability for routine maintenance or future repairs. We also examined ease of installation, including whether the part supported direct-fit replacement and straightforward routing, and assessed corrosion resistance and warranty or support considerations where available. Exclusions: items that required vehicle modifications, universal hoses without Acadia-specific fitment, or parts lacking clear fittings documentation were not considered. The result is a list of options that meet practical standards for reliability, longevity, and correct fitment on the GMC Acadia.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know if my GMC Acadia oil cooler lines are failing?
Common signs include visible oil leaks under the vehicle or around the cooler, a drop in oil level without other apparent causes, or higher than normal oil temperatures. You may also notice oil on nearby components or a strong burnt-oil odor. If you observe any of these symptoms, inspect the lines and fittings for wetness or damage.
Can I replace just a section of the oil cooler line or do I need the whole assembly?
It often depends on the damage location and the line design. Some systems allow replacing a damaged hose segment or fitting, while others use preformed assemblies that are best replaced whole for reliable routing and fitment. Replacing the entire assembly reduces the risk of future leaks caused by mismatched materials or improper routing.
What causes oil cooler line leaks on the GMC Acadia?
Leaks commonly result from material degradation due to heat and oil exposure, abrasive wear from contact with other components, corroded fittings, or failed seals at connections. External impacts or improper installation can also create stress points that eventually leak. Regular visual checks help catch early signs of wear.
Are metal lines better than rubber hoses for the oil cooler on the GMC Acadia?
Metal or braided lines generally offer superior resistance to heat, abrasion, and permeation compared with plain rubber hoses, which can soften and degrade faster under high-temperature conditions. However, metal lines must be properly routed and protected from vibration and corrosion. Choice should balance durability with correct fitment and installation considerations.
Do I need to change the oil when replacing the oil cooler lines?
You may not always need a full oil change, but it is good practice to check oil cleanliness and level after replacing lines. If the system lost a significant amount of oil during the repair, topping off or changing the oil and filter ensures proper lubrication and removes any contaminants introduced during the repair.
Conclusion
When choosing oil cooler lines for the GMC Acadia, prioritize correct fitment and durable materials that resist heat, oil exposure, and abrasion. High-quality fittings and proper sealing are essential to prevent leaks and maintain consistent oil cooling.Balance ease of installation and serviceability with long-term corrosion protection. Focusing on those factors will minimize future repairs and keep oil temperatures under control.
Explore More:
- Check out all GMC Acadia parts & accessories
- Explore Oil Cooler Lines Maintenance & Repair Guides
- Explore Cooling System
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