Transmission / Engine Oil Coolers
Transmission & Engine Oil Coolers
Protect Your Vehicle from Heat Damage
Upgrading your engine and transmission cooling systems is one of the most cost-effective ways to prevent overheating, improve reliability, and extend the life of critical drivetrain components.
Davies Craig offers one of the industry's most comprehensive ranges of premium oil cooler cores, suitable for a wide variety of vehicles and applications. Our range includes Ultra-Cool® tube and fin coolers, Hydra-Cool® plate and fin coolers, and high-capacity stack plate coolers designed for both engine oil and automatic transmission cooling.
Whether you drive a passenger vehicle, 4WD, SUV, light commercial, motorhome, performance car, or motorcycle, fitting an oil cooler helps maintain optimum operating temperatures, improve efficiency, and reduce wear.
Why Install an Oil Cooler?
Maintaining correct oil and fluid temperatures is essential for the long-term performance of your vehicle's engine, automatic transmission, and power steering system.
As operating temperatures increase, lubricating oils and hydraulic fluids begin to deteriorate, reducing their ability to protect internal components. Excessive heat accelerates wear, reduces performance, and can ultimately lead to expensive component failure.
A Davies Craig Universal Oil Cooler provides an economical and highly effective solution for reducing operating temperatures and extending component life. Suitable for engine oil, automatic transmission fluid (ATF), torque converter applications, and power steering systems, our cooler range delivers outstanding heat transfer and long-term reliability.
Common Causes of Excessive Heat
Your engine and transmission are placed under greater thermal stress during:
- Towing caravans, trailers and boats
- Climbing steep gradients
- Stop-start city traffic
- Carrying heavy loads
- High ambient temperatures
- Driving in sand, mud or snow
- Performance and off-road driving
Installing an auxiliary oil cooler helps keep operating temperatures under control during these demanding conditions.
Transmission & Power Steering Oil Coolers
Davies Craig offers two proven oil cooler technologies to suit different vehicles and applications.
Ultra-Cool® Tube & Fin Oil Coolers
Recommended for older vehicles and power steering applications.
The Ultra-Cool® Tube & Fin Oil Cooler features a traditional finned-tube design that has proven reliability across decades of automotive use. It is ideally suited to older automatic transmissions and power steering systems where a simple, economical cooling solution is required.
Its large external surface area efficiently dissipates heat from automatic transmission fluid, helping maintain smooth transmission operation while extending transmission life.
Hydra-Cool® Plate & Fin Oil Coolers
Suitable for all vehicle applications.
The Hydra-Cool® Plate & Fin Oil Cooler provides superior cooling efficiency through an advanced plate and fin construction combined with high-efficiency internal turbulators that maximise heat transfer.
Its compact design delivers exceptional cooling performance while requiring up to 33% less mounting space than conventional tube and fin coolers, making it ideal where installation space is limited.
Hydra-Cool® coolers are suitable for:
- Automatic transmissions
- Engine oil cooling
- Performance vehicles
- 4WDs and towing applications
- Heavy-duty vehicles
- Motorhomes and commercial vehicles
Quality You Can Trust
Every Davies Craig transmission oil cooler is 100% pressure tested to ensure maximum reliability and durability.
Ultra-Cool® and Hydra-Cool® kits are supplied complete with the fittings, mounting hardware, and installation instructions required for a straightforward installation.
When you choose Davies Craig, you're investing in proven cooling performance that helps protect your vehicle, improve reliability, and extend the life of your engine and transmission.
How to Select the Correct Transmission Oil Cooler
All Davies Craig transmission oil coolers are universal fit, making it easy to choose the right cooler based on the available mounting space rather than your vehicle's make or model.
Step 1 – Determine the Correct Cooler for Your Application
Use the Transmission & Engine Oil Cooler Product Selection Guide (below) to identify the recommended transmission oil cooler for your application. The guide considers factors such as:
- Vehicle type
- Transmission type
- Intended use and operating conditions
This will recommend the appropriate transmission oil cooler size for your application.
Step 2 – Is a Thermatic® Fan Beneficial?
Some applications benefit from the addition of a Thermatic® Electric Fan to provide consistent airflow through the oil cooler when natural airflow is limited.
A fan is recommended for applications including:
- Towing
- Motorsport or performance driving
- Off-road vehicles
- Remote-mounted oil coolers
- Low-speed or stop-start operation
The Transmission & Engine Oil Cooler Product Selection Guide will indicate when a Thermatic® Fan is recommended for your application.
Step 3 – Measure the Available Space
Most transmission oil coolers are mounted in front of the radiator or air conditioning condenser to maximise airflow.
Measure the available installation area and record the following dimensions:
- Width
- Height
- Available Clearance (Depth)
Step 4 – Choose the Largest Cooler That Fits
As a general rule, the largest transmission oil cooler that comfortably fits within the available space will provide the best cooling performance. A larger cooler offers greater heat dissipation, helping to maintain lower automatic transmission fluid (ATF) temperatures, particularly when towing, carrying heavy loads, driving off-road, or operating in hot conditions.
Step 5 – Compare Your Measurements
Once you have your dimensions, visit the Davies Craig Transmission Oil Coolers page and review the Specifications & Range table located approximately halfway down the page.
There you can:
- Compare each oil cooler's dimensions with your available mounting space.
- Select the largest cooler that can be installed without interfering with surrounding components.
- Choose from our Ultra-Cool® Tube & Fin or Hydra-Cool® Plate & Fin ranges to suit your application.
Need Assistance?
If you're unsure which transmission oil cooler is best suited to your vehicle, our technical team is here to help.
Simply take your measurements and contact Davies Craig—we'll be happy to recommend the most suitable oil cooler for your application.
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PRODUCT SELECTION GUIDE Transmission & Engine Oil Coolers |
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|---|---|---|---|---|
|
Vehicle Type |
APPLICATION |
|||
| Standard Duty / No Towing | Medium Duty/Light Towing | Heavy Duty/Heavy Towing | Super heavy Duty Transmission cooler or Engine oil cooler | |
|
Part Number |
Part Number |
Part Number |
Part Number |
|
| 4 Cyl. Up to 1990* |
#401 or #676 |
#403 or #676 |
#404 or #677 |
#602 |
| 6 Cyl. Up to 1990* |
#403 or #676 |
#404 or #677 |
#678 or #679 |
#602 |
| 8 Cyl. Up to 1990* |
#404 or #677 |
#678 | #679 |
#602 or #605 |
| Small Car | #676 | #677 | #678 |
#602 or #605 |
| Sedan / Wagon | #677 | #678 | #679 |
#602 or #605 or #610 |
| 4WDs & SUV | #678 | #679 | #602 |
#605 or #610 |
| Commercial | #678 | #679 |
#602 or #605 |
#610 |
| Cooler and Fan combo recommended for low-speed driving/towing and off-road applications | ||||
| Small Car |
#698 (12V) #699 (24V) |
#698 (12V) #699 (24V) |
#698 (12V) #699 (24V) |
#600 (12V) or #614 (12V) or #608 (12V) |
| Sedan / Wagon |
#698 (12V) #699 (24V) |
#698 (12V) #699 (24V) |
#691 (12V) #692 (24V) |
#600 (12V) or #614 (12V) or #608 (12V) |
| 4WDs & SUV |
#698 (12V) #699 (24V) |
#691 (12V) #692 (24V) |
#600 (12V) #692 (24V) |
#600 (12V) or #614 (12V) or #608 (12V) |
| Commercial |
#698 (12V) #699 (24V) |
#691 (12V) #692 (24V) |
#600 (12V) #692 (24V) |
#608 (12V) |
| Oil Cooler Accessories recommended for specific Transmissions | ||||
| GM-Holden Transmission | Select cooler as above plus #1005 | Select cooler as above plus #1005 | Select cooler as above plus #1005 | Select cooler as above plus #1005 |
| 6R80 Transmission | Select cooler as above plus #1006 | Select cooler as above plus #1006 | Select cooler as above plus #1006 | Select Part # as above plus #1006 |
| Power Steering Oil Cooler | ||||
| Vehicle | Standard Duty | Medium Duty | Heavy Duty | Super heavy Duty |
| All Vehicles | #1009 | #401 | #403 | #404 |
|
SPECIFICATION & RANGE Transmission & Engine Oil Coolers |
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| Part # | Image | Plates | Thickness mm |
Overall | Core | Inlet/Outlet Size |
Hose Size | Heat Transfer Rate (BTU/HR) |
Fluid Capacity |
||
| Width mm | Height mm | Width mm | Height mm | ||||||||
|
Power Steering Cooler & Ultra-Cool Transmission Oil Cooler (Tube & Fin) |
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| 1009 |  |
Tube & Fin |
19 | 237 | 64 | 148 | 64 | 3/8” 9.5mm |
3/8” (9.5mm) 1.2m |
4,000 | 43ml |
| 401 |  |
20 | 326 | 128 | 245 | 128 | 9,000 | 122ml | |||
| 403 |  |
20 | 326 | 191 | 246 | 191 | 10,800 | 207ml | |||
| 404 |  |
20 | 395 | 191 | 316 | 191 | 12,000 | 248ml | |||
| Hydra-Cool Transmission Oil Cooler (Plate & Fin) | |||||||||||
| 676 |  |
12 | 20 | 281 | 141 | 281 | 112 | 3/8” 9.5mm |
3/8” (9.5mm) 1.4m |
11,987 | 81ml |
| 677 |  |
17 | 20 | 281 | 180 | 281 | 152 | 13,394 | 115ml | ||
| 678 |  |
23 | 20 | 281 | 229 | 281 | 200 | 13,937 | 158ml | ||
| 679 |  |
30 | 20 | 281 | 300 | 281 | 265 | 15,710 | 201ml | ||
| Transmission Oil Cooler & Fan Combo Kits | |||||||||||
| 698 (12V) |
|
23 | 76 | 281 | 229 | 281 | 200 | 3/8” 9.5mm |
3/8” (9.5mm) 1.4m |
13,937 | 158ml |
| 699 (24V) | |||||||||||
| 691 (12V) | 30 | 76 | 281 | 300 | 281 | 265 | 15,710 | 201ml | |||
| 692 (24V) | |||||||||||
| Universal Engine/Transmission Oil Cooler | |||||||||||
| 602 |  |
14 | 32 | 258 | 224.5 | 258 | 185.5 | AN10 ORB | N/A | 21,000 | 500ml |
| 605 |  |
19 | 50 | 330 | 166 | 285 | 142 | 37,000 | 440ml | ||
| 610 |  |
30 | 50 | 330 | 249 | 285 | 226 | 50,000 | 690ml | ||
| 616 |  |
14 | 32 | 258 | 224.5 | 258 | 185.5 | M16 | N/A | 21,000 | 500ml |
| Universal Engine/Transmission Oil Cooler & Fan Combo Kits | |||||||||||
| 600 (12V) |  |
14 | 87 | 258 | 224.5 | 258 | 185.5 | AN10 ORB | N/A | 21,000 | 500ml |
| 608 (12V) |  |
30 | 106 | 330 | 249 | 285 | 226 | 50,000 | 690ml | ||
| 614 (12V) |  |
14 | 87 | 258 | 224.5 | 258 | 185.5 | M16 | N/A | 21,000 | 500ml |
| Accessories | |||||||||||
| 1005 |  |
5/16" (8mm) Adaptor Kit - Transmission Oil Cooler to suit GM transmissions | |||||||||
| 1006 |  |
Transmission Oil Cooler Fitting Kit (6R80) Suits Ford Ranger and Mazda BT50 | |||||||||
| 1007 |  |
Transmission Temperature Sensor Adapter Kit - suits 3/8” Hose and 1/4” NPT Sensor | |||||||||
| 1008 |  |
AN10 ORB to 3/8" Push on Hose Barb Fitting | |||||||||
| 1010 |  |
Transmission Oil Cooler Fitting Kit (AN10 ORB to 3/8" Hose) | |||||||||
| 579 |  |
Quick Fit Kits (Mounting Kit) | |||||||||
| 0444 0445 0500 |
 |
Digital Thermatic® / Electric Fan Switches | |||||||||
Please visit our buy online section to view the Davies Craig TRANMISSION OIL COOLER range.