Description

Mitsubishi ACD/AYC Pump for Evo 7, 8 & 9 GSR – MR580018

Firstly, Buy a Mitsubishi ACD AYC pump MR580018 for compatible Evo 7, 8 and 9 models. Restore your Mitsubishi Lancer Evolution’s drivetrain control system with the Mitsubishi ACD/AYC pump for Evo 7, 8, and 9 GSR models (MR580018). This hydraulic unit is an important component of Mitsubishi’s advanced differential control system, helping provide the hydraulic pressure required for the operation of compatible Active Center Differential (ACD) and Active Yaw Control (AYC) systems.

Designed for compatible Mitsubishi Evolution applications, the ACD/AYC pump is relevant to owners diagnosing hydraulic faults, replacing a worn assembly, or restoring a performance car to its original drivetrain specification. Choosing the correct pump is essential because Mitsubishi used different hydraulic configurations across Evolution generations, trims, and markets.

If you are searching for a Mitsubishi Evo ACD/AYC pump with OEM part number MR580018, this listing identifies the original hydraulic unit by its Mitsubishi part number. Specialist parts listings also identify 3520A076 as a superseding number for certain Evo VII–IX GSR pump applications. Confirm the applicable part number against your vehicle and the exact item being supplied before ordering.

Mitsubishi ACD/AYC Pump MR580018 – Product Details

The MR580018 hydraulic unit is associated with Mitsubishi’s differential control system. Depending on the vehicle’s configuration, the hydraulic assembly supports the operation of the relevant differential control functions.

Product details:

• Product: Mitsubishi ACD/AYC hydraulic pump assembly
• OEM part number: MR580018
• Related replacement number: 3520A076 is listed as a superseding number for certain applications
• Vehicle range: Compatible Mitsubishi Lancer Evolution VII, VIII, and IX applications
• Chassis family: CT9A
• Intended trim: Compatible GSR models, subject to drivetrain configuration
• System: ACD/AYC hydraulic differential control
• Function: Supplies hydraulic pressure for the relevant drivetrain control system
• Condition: Confirm whether the item is new, used, or refurbished
• Included components: Check the individual listing for included brackets, lines, reservoir components, and hardware

These details identify the product and its intended application range, but do not guarantee universal fitment across every CT9A model. Always verify the original equipment number and system configuration before purchasing.

What Does the Mitsubishi Evo ACD/AYC Pump Do?

Mitsubishi developed its ACD and AYC technologies to help improve the Evolution’s all-wheel-drive performance and handling characteristics.

The Active Center Differential manages the locking characteristics of the center differential, influencing torque transfer between the front and rear axles. Active Yaw Control uses a separate rear differential control function to influence torque distribution between the rear wheels on vehicles equipped with that system.

The hydraulic pump supplies the pressure required for the applicable hydraulic control functions. It works alongside electronic control units, sensors, valves, hydraulic lines, and differential components. When the system operates correctly, these components work together to support the drivetrain behavior Mitsubishi engineered for the vehicle.

A failing hydraulic unit can contribute to warning lights, stored diagnostic codes, unusual pump noise, or reduced system operation. However, similar symptoms can result from electrical faults, pressure sensor problems, low fluid levels, leaks, or other damaged components. Diagnosis is recommended before replacing the complete assembly.

Mitsubishi MR580018 Compatibility for Evo 7, 8 and 9

The MR580018 part number appears in Mitsubishi parts catalogues for hydraulic differential control applications, including CT9A Evolution configurations. Compatibility still depends on the precise model, market, trim, and system installed in the vehicle.

Mitsubishi Lancer Evolution VII

The Evolution VII introduced the CT9A generation and its ACD drivetrain technology. For a replacement pump, confirm that the original hydraulic arrangement matches the MR580018 assembly and its applicable replacement part number.

Mitsubishi Lancer Evolution VIII

Evolution VIII drivetrain equipment differs between markets and model variants. Some models use a conventional center differential configuration, while others feature ACD. Do not assume every Evo VIII requires the same hydraulic pump simply because it shares the CT9A chassis family.

Mitsubishi Lancer Evolution IX

Evolution IX models also have market-specific drivetrain configurations. Certain international-market variants feature combined ACD/AYC systems, while US-market models differ. Verify the exact system fitted to the vehicle before purchasing an ACD/AYC hydraulic unit.

For all three generations, check the vehicle identification number (VIN), the original pump label, and the Mitsubishi parts catalogue. Matching the part number is more reliable than relying solely on the model year or trim badge.

MR580018 and 3520A076 – Understanding the Part Numbers

When shopping for a replacement Mitsubishi ACD/AYC pump, you may encounter both MR580018 and 3520A076 in parts listings.

Specialist Mitsubishi parts retailers list 3520A076 as a replacement or superseding number for MR580018 on certain Evolution VII–IX GSR applications. This relationship can help when searching for discontinued or difficult-to-source components, but it should not be interpreted as proof that the two numbers fit every Evolution variant.

Before ordering, confirm the following:

• The original part number installed in your vehicle.
• Whether the replacement number is approved for your specific application.
• The pump’s hydraulic ports and electrical connections.
• The vehicle’s ACD-only or combined ACD/AYC configuration.
• The condition of the replacement unit and any included components.

If MR580018 is no longer available in the required condition, ask the seller to confirm whether a superseding part number is suitable for your vehicle.

Why Choose the Correct OEM ACD/AYC Hydraulic Unit?

Using the correct Mitsubishi hydraulic unit helps maintain the intended drivetrain configuration and reduces the risk of purchasing an incompatible replacement.

For owners restoring an Evolution, an original-specification component can be important for preserving factory drivetrain behavior. It can also simplify a repair when the replacement matches the existing mounting arrangement, connections, and hydraulic requirements.

Before purchasing, establish whether the pump is genuine Mitsubishi, refurbished, or an aftermarket replacement. These descriptions are not interchangeable. If the unit is used, inspect it for corrosion, fluid leakage, damage to the connectors, and signs of previous repairs. For refurbished components, review any available testing information and warranty terms.

A correct part number is an important starting point, but the unit’s actual condition and the vehicle’s specification must also be considered.

Installation and Maintenance

Replacing an ACD/AYC pump involves hydraulic connections, electrical wiring, and drivetrain control components. Follow the Mitsubishi workshop procedure for the exact vehicle and system configuration.

During installation, protect open hydraulic connections from contamination and inspect the associated lines, fittings, wiring, and mounting points. Use the fluid specified for the applicable hydraulic circuit; do not assume that the pump uses the same fluid as the engine, transmission, or differential gears.

After installation, the system may require appropriate bleeding, diagnostic checks, or initialization. If the original pump failed, inspect the relay, pressure sensor, wiring, fluid level, and other relevant components to determine whether an additional fault contributed to the failure.

Professional installation is recommended if you do not have the required diagnostic equipment or experience working on Mitsubishi’s electronically controlled drivetrain systems.

Frequently Asked Questions

What is Mitsubishi part number MR580018?

MR580018 is listed as a Mitsubishi hydraulic unit for differential control. It is associated with certain Evolution applications, including CT9A models. Verify the exact fitment against the vehicle’s original part number.

Does MR580018 fit every Evo 7, 8 and 9 GSR?

Not necessarily. Market and drivetrain differences can affect pump compatibility. Check the VIN, original hydraulic unit, and applicable Mitsubishi parts catalogue before ordering.

Is 3520A076 a replacement for MR580018?

Specialist parts listings identify 3520A076 as a superseding number for certain Evo VII–IX GSR pump applications. Confirm the supersession and fitment for your specific vehicle before purchase.

Does the pump operate both ACD and AYC?

That depends on the hydraulic configuration. Some applications use a combined ACD/AYC pump, while others have different arrangements. Verify whether your vehicle has ACD only or a combined ACD/AYC system.

Can I replace the pump if the ACD or AYC warning light is on?

A warning light alone does not confirm pump failure. Fault codes, fluid level, electrical connections, the relay, pressure sensor, and hydraulic system should be checked before replacing the assembly.

Shop Mitsubishi Evo ACD/AYC Pump Parts

Selecting the correct hydraulic unit is essential when maintaining the advanced drivetrain systems of your Mitsubishi Lancer Evolution. If you are sourcing the Mitsubishi ACD/AYC pump MR580018 for a compatible Evo VII, VIII, or IX, verify the part number, supersession, vehicle specification, condition, and included components before ordering.