Key Features and Benefits
- Remote oil filter mounting: Relocates the oil filter to a suitable custom mounting position.
- 3/4-16 UNF filter thread: Designed for compatible GReddy-sized spin-on oil filters.
- Integrated GReddy thermostat: Controls the external oil cooler circuit at approximately 70–80°C.
- -10AN oil connections: Supports compatible aftermarket oil cooler and relocation plumbing.
- Custom oil cooler integration: Designed to work with a separately purchased external oil cooler.
- Improved service accessibility: Can simplify future oil filter changes.
- Flexible engine compatibility: Can be incorporated into properly designed oil systems using compatible engine-side adapters.
- GReddy performance engineering: Developed for custom lubrication and cooling applications.
Important: This product is the remote filter block assembly, not a complete oil cooler or relocation kit. Additional parts are required.
GReddy 12401114 Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | GReddy / TRUST |
| Manufacturer part number | 12401114 |
| Product name | Type-I Oil Cooler / Remote Oil Filter Block |
| Product type | Remote oil filter relocation adapter |
| Filter mounting thread | 3/4-16 UNF |
| Oil line connection size | -10AN |
| Thermostat | Integrated |
| Thermostat operating range | Approximately 70–80°C / 158–176°F |
| Application | Universal custom installation |
| Recommended filter | GReddy OX-01 or OX-03 |
| Compatible filter references | 13901101 / 13901103 |
| Engine-side adapter | Sold separately |
| External oil cooler | Sold separately |
| Oil hoses | Sold separately |
| Optional bypass tube | GReddy 12009990 |
| Optional sensor adapter | GReddy 16400721 |
| Installation | Custom mounting and plumbing required |
What Does a Remote Oil Filter Relocation Block Do?
A factory oil filter normally mounts directly to the engine block or an original-equipment filter housing.
A remote oil filter system moves the filter to another location using an engine-side adapter, oil lines, and a remote mounting block.
The GReddy 12401114 serves as the remote oil filter mounting point and provides the plumbing arrangement needed for integrating an external oil cooler.
This can be especially valuable on vehicles where the original filter becomes difficult to access after performance modifications.
A well-planned relocation system may make routine maintenance easier while providing additional flexibility for an external oil cooler.
However, every additional fitting and hose introduces another potential leak point. Proper installation is essential.
Why the Built-In Oil Thermostat Matters
Engine oil needs to reach an appropriate operating temperature to lubricate moving components effectively.
When oil is cold, its viscosity is higher. Sending all the oil through a large external cooler immediately after startup can delay warm-up.
The GReddy Type-I incorporates a thermostat that manages the external oil cooler circuit as temperatures increase.
GReddy specifies an operating range of approximately 70–80°C.
This helps the system balance warm-up behavior and cooling demand rather than relying on a permanently unrestricted oil cooler circuit.
For a turbocharged street car, maintaining suitable oil temperatures is an important part of engine reliability.
Our Complete Street Turbo Build Guide explains why oil cooling, turbocharger lubrication, pressure-rated hoses, and temperature monitoring should be planned together rather than treated as unrelated modifications.
An external oil cooler should be selected based on the engine’s actual thermal requirements, not simply the largest available core.
GReddy 12401114 Oil Filter Compatibility
The GReddy 12401114 is designed for 3/4-16 UNF threaded oil filters.
GReddy identifies the following compatible filter options:
| Oil filter | GReddy part number | Thread |
|---|---|---|
| GReddy OX-01 | 13901101 | 3/4-16 UNF |
| GReddy OX-03 | 13901103 | 3/4-16 UNF |
GReddy also references an AE86/4A-G-sized oil filter configuration.
Important: Thread size alone does not guarantee filter compatibility. The filter’s sealing gasket, body dimensions, filtration specifications, and bypass-valve characteristics must also suit the installation.
Do not assume every commercially available 3/4-16 UNF oil filter is an acceptable replacement.
Compatible GReddy Engine-Side Oil Block Adapters
Because the GReddy 12401114 is a remote filter block, it requires a separate engine-side adapter to connect the system to the engine.
GReddy identifies several compatible adapter options.
| GReddy part number | Adapter type | Engine-side thread |
|---|---|---|
| 12401129 | Type-B | M20×1.5 |
| 12401111 | Type-B | 3/4-16 UNF |
| 12401135 | Type-F | M20×1.5 |
| 12401131 | Type-F | 3/4-16 UNF |
These adapters are sold separately.
Select the correct engine-side adapter according to the engine’s filter mounting thread, sealing diameter, available clearance, and required oil routing.
The remote filter’s 3/4-16 UNF thread does not mean the engine itself must use a 3/4-16 UNF factory oil filter.
What Vehicles Fit GReddy 12401114?
The GReddy 12401114 is a universal remote oil filter block intended for custom installations.
It is not a direct-fit component assigned to a specific vehicle year, make, or model.
Compatibility depends on the entire oil system.
Installation Requirements
| Requirement | What to verify |
|---|---|
| Engine-side adapter | Correct thread and sealing arrangement |
| Remote oil filter | Compatible 3/4-16 UNF filter |
| Oil plumbing | Correct -10AN fittings and hose specifications |
| Mounting location | Secure structure and sufficient filter clearance |
| Oil cooler | Compatible external cooler, if installed |
| Thermostat circuit | Correct routing through the Type-I block |
| Engine oil pressure | Proper pressure and flow after installation |
| Oil capacity | Additional volume from hoses and cooler |
| Temperature exposure | Protection from exhaust and turbocharger heat |
For Pro Street Online’s fitment database, this product should be listed as Universal – Custom Installation Required.
Important: The Oil Cooler Ports Must Be Connected
The GReddy 12401114 requires a complete oil cooler circuit.
If an external oil cooler is not installed, the oil cooler inlet and outlet must be connected using an appropriate bypass arrangement.
GReddy offers the optional 12009990 -10AN bypass tube for this purpose.
Do not leave the cooler ports open or cap them without following the manufacturer’s specified routing.
Incorrect plumbing can interrupt engine lubrication and cause severe engine damage.
Why -10AN Oil Plumbing Matters
The GReddy 12401114 uses -10AN connections, a common size in performance oil cooling systems.
Properly selected -10AN hoses and fittings can provide a suitable oil flow path for many custom applications.
However, hose size alone does not guarantee adequate lubrication.
Oil pressure and flow depend on the engine’s oil pump, internal clearances, hose length, fitting restrictions, oil viscosity, and cooler design.
Use hoses specifically rated for hot engine oil and the maximum expected pressure.
Avoid sharp bends, unnecessary restrictions, and routing near exhaust components.
Our Why Is My Car Leaking Oil? Diagnosis Guide explains why oil cooler hoses, filter housings, and pressurized fittings deserve careful inspection.
A small leak in a remote oil filter system can quickly become a major lubrication problem.
Adding Oil Pressure and Temperature Sensors
Oil temperature and pressure monitoring become especially valuable when installing a custom oil cooler.
GReddy identifies 16400721 as an optional adapter for adding 1/8 PT oil-pressure and oil-temperature sensor connections.
These sensors can help drivers monitor the oil system during cold starts, warm idle, and sustained high-load operation.
Our Oil Pressure Warning Light Diagnosis Guide explains why an unexpected oil-pressure drop should always be treated seriously.
Remember that 1/8 PT and 1/8 NPT are different thread standards. Verify the sensor thread before installation.
GReddy 12401114 vs. GReddy 12401182
GReddy offers two Type-I remote oil filter block configurations with different filter mounting threads.
| Feature | GReddy 12401114 | GReddy 12401182 |
|---|---|---|
| Remote oil filter mounting | Yes | Yes |
| Filter thread | 3/4-16 UNF | M20×1.5 |
| Oil line connections | -10AN | -10AN |
| Integrated thermostat | Yes | Yes |
| Thermostat range | 70–80°C | 70–80°C |
| External cooler compatibility | Yes | Yes |
| Custom installation required | Yes | Yes |
The correct choice depends primarily on the intended remote oil filter and the overall plumbing configuration.
Neither part is a complete bolt-on oil cooler kit.
Installation Considerations
A remote oil filter and cooler system should be installed by someone familiar with engine lubrication plumbing.
Before installation, confirm all component specifications and prepare a complete oil routing diagram.
Mount the remote filter block securely, away from excessive heat and moving components.
Use compatible hoses and fittings, following GReddy’s required flow direction.
Ensure the external oil cooler circuit is correctly connected or bypassed.
After installation, account for the additional oil capacity and follow the engine manufacturer’s appropriate priming procedure.
Verify oil pressure before normal operation and inspect every fitting, hose, and sealing surface for leaks.
If oil pressure does not develop normally, shut the engine down immediately.
Frequently Asked Questions
What is GReddy 12401114?
It is a universal Type-I remote oil filter block with a built-in thermostat and -10AN connections for custom oil cooler and filter relocation systems.
What oil filter thread does it use?
3/4-16 UNF.
Does it have a built-in thermostat?
Yes. GReddy specifies approximately 70–80°C.
Does it include an oil cooler?
No. An external oil cooler must be purchased separately.
Does it include the engine-side adapter?
No. A compatible Type-B, Type-F, or other approved engine-side adapter is required.
Can I use it without an external oil cooler?
Yes, provided the cooler circuit is correctly connected using an appropriate bypass arrangement, such as GReddy 12009990.
Does it fit Toyota, Nissan, Honda, or Mitsubishi vehicles?
It may be incorporated into compatible custom installations, but vehicle-specific fitment depends on the engine-side adapter and complete oil system configuration.
Can I install oil-pressure and oil-temperature gauges?
Yes. GReddy offers optional sensor adapter 16400721 for compatible 1/8 PT senders.
Does it increase horsepower?
No direct horsepower increase is guaranteed. Its purpose is oil filter relocation and support for a properly designed oil cooling system.
Build a Reliable Custom Oil Cooling System With GReddy
The GReddy 12401114 Type-I Oil Filter Relocation Block provides a versatile foundation for enthusiasts building a custom engine lubrication system.
With its 3/4-16 UNF filter mount, -10AN connections, and integrated 70–80°C thermostat, it combines remote oil filtration and external oil cooler integration in one performance-oriented component.
Choose the GReddy 12401114 when your build requires a 3/4-16 UNF remote oil filter mount with thermostatic oil cooler control.
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