Mitsubishi TD05H Turbo Rebuild Service

PT Turbo rebuilds and remanufactures Mitsubishi TD05H turbochargers in-house at our San Bernardino, CA shop. Every unit goes through a full teardown, OEM-spec or better parts replacement, CIMAT VSR balancing, and final quality inspection before it ships back — backed by a 12-month unlimited mileage warranty and nationwide mail-in service. Commonly found on Mitsubishi Evo / DSM Performance.

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Common Mitsubishi TD05H Part Numbers

The following part and SKU numbers from PT Turbo’s catalog match or cross-reference to the Mitsubishi TD05H:

Don’t see your number? Contact PT Turbo — we’ve been matching turbo part numbers since 1978.

Trouble Codes Often Seen on Mitsubishi Evo / DSM Performance Equipped with the Mitsubishi TD05H

These are generic diagnostic trouble codes commonly associated with turbo boost control issues on this application. They’re triggered by the vehicle’s ECU, not the turbo itself, so confirm with a scan tool before assuming the turbocharger is at fault.

• P0299 — Turbocharger/Supercharger Boost Pressure – Low (underboost)
• P0234 — Turbocharger/Supercharger Overboost Condition

Also Known As

Buyers searching for this turbo often use one of these names or variations:

• Mitsubishi TD05H 16G / 18G / 20G
• Mitsubishi TD05H-16G big 16G turbo
• Evo TD05H upgrade turbo
• DSM TD05 big 16G
• TD05H high-flow turbocharger
• Mitsubishi Evo / DSM performance turbo

Vehicles We Commonly See With the Mitsubishi TD05H

The TD05H is a high-flow upgrade unit that shows up on a wide range of Mitsubishi and Chrysler performance platforms.

Mitsubishi Lancer Evolution

• Lancer Evolution IV through IX (1996 to 2007) with the 4G63 engine
• Evo builds running TD05H-16G and 20G frames for street and track duty
• JDM Evo imports converted to larger TD05H housings

DSM Platform (Diamond Star Motors)

• Eagle Talon TSi (1990 to 1998)
• Mitsubishi Eclipse GSX and GST (1990 to 1999)
• Plymouth Laser RS Turbo (1990 to 1994)

Other 4G63 and Performance Swaps

• Mitsubishi Galant VR-4 (1991 to 1992)
• 4G63 swap builds upgraded from the factory TD04/TD05 to TD05H
• Engine-swapped chassis using TD05H as a bolt-up upgrade turbo

Common Mitsubishi TD05H Failure Symptoms

• Excessive shaft play you can feel rocking the wheel side to side by hand
• High-pitched whine or grinding from the center section under boost
• Blue smoke on hard acceleration or during decel from oil pulled past worn seals
• Loss of top-end boost or boost that creeps and falls off at high RPM
• Oil weeping from the compressor or turbine side into the intercooler piping
• Compressor wheel rub marks or contact damage against the housing
• Slow spool or laggy response compared to how it pulled when fresh
• Oil pooling in the downpipe or intake from a failing turbine-side seal

Real Mitsubishi TD05H Failures We See in Our Shop

After rebuilding hundreds of these units, here is what actually comes across our bench:

• We frequently see shaft play that has opened up from sustained high-RPM duty. These turbos live near redline on track cars and the journal bearings simply wear out faster than a street unit ever would.
• On the TD05H units we rebuild, oil starvation during hard launches is one of the biggest killers. When the oil feed cannot keep up during aggressive acceleration, the bearings score and the shaft loses its oil film right when load is highest.
• Over-speed damage from aggressive tuning is extremely common. We pull compressor wheels with bent or stretched tips and shafts that have been spun past their safe limit by guys chasing more boost than the wheel was sized for.
• We see compressor wheel rub where the shaft has walked far enough to make the wheel kiss the housing, usually a downstream result of worn thrust bearings from repeated boost spikes.
• Coked oil in the center housing shows up on units that got shut down hot after a hard run. The baked oil restricts the feed and accelerates bearing wear on the next start.
• Thrust bearing wear from rapid throttle transitions is a recurring theme. The constant on-off boost cycling on a DSM or Evo hammers the thrust surface harder than steady-state driving ever does.

Preventing Future Mitsubishi TD05H Failures

A few habits go a long way toward keeping a freshly rebuilt TD05H alive on a hard-driven car:

• Run a quality oil and change it on a tighter interval than stock, especially if the car sees track or autocross use.
• Let the turbo idle and cool down after hard runs so the center section is not baking oil into the bearings at shutdown.
• Allow proper warm-up before getting into boost so oil is flowing freely before the shaft sees load.
• Keep the oil feed line clean and verify adequate oil pressure, since starvation during launches is a top failure cause on this unit.
• Pressure-test for boost leaks regularly so the turbo is not overspeeding to compensate for lost pressure.
• Run a clean, properly sealed air filter so no debris reaches the compressor wheel.
• Tune conservatively and stay within the wheel’s safe airflow range to avoid over-speeding the shaft.

Common Mitsubishi TD05H Upgrade Paths

Because the TD05H is already a performance frame, customers rebuilding one often ask about pushing it further while it is apart. The most common requests are billet compressor wheels for higher flow and better shaft strength, upgraded thrust bearing assemblies to handle the boost cycling that wears the stock thrust surface, and stepping up from a 16G to an 18G or 20G compressor for more top-end capacity. Some builders also ask about clipped or ported turbine wheels and 360-degree thrust bearings for added durability on high-RPM track cars. These are factual options we can discuss based on your power goals and how the car is driven.

Frequently Asked Questions

How to Identify Your Mitsubishi Turbo

The identification tag is typically located on the compressor housing, bearing housing, or center section of the turbocharger. It usually lists the model number, assembly number, and serial number. If you’re not sure which Mitsubishi model you have, send PT Turbo a photo of the tag and we’ll help identify it before you ship anything.

PT Turbo Warranty

• 12-month, unlimited mileage warranty against defects in parts and workmanship
• Final quality inspection on every rebuild: leak test, visual inspection, actuator or wastegate function check
• In-house CIMAT VSR balancing with a balance report included
• Nationwide mail-in service — you don’t need to be local

What the Mitsubishi TD05H Rebuild May Include

• Complete teardown of all major components
• Ultrasonic or parts cleaning to remove carbon, oil residue, and contamination
• Journal bearing, thrust bearing, and seal replacement
• O-rings and hardware replacement
• Shaft and wheel inspection, with compressor or turbine wheel replacement if needed
• Wastegate inspection and actuator linkage service, when equipped
• CIMAT VSR balancing
• Final inspection

Why Customers Choose PT Turbo

• Rebuilding turbochargers, including Mitsubishi, since 1978
• In-house CIMAT VSR balancing on every unit, not outsourced
• Full housing sandblasting and OEM-spec or better parts replacement
• Inspect first, quote before work begins — no surprise charges
• Nationwide mail-in service from our San Bernardino, CA shop

PT Turbo Inspection Process

Every turbocharger goes through the same evaluation before any work begins:

1. Initial evaluationcompressor wheel, turbine wheel, shaft, bearing housing, VGT assembly (if equipped), actuator, and seal surfaces are checked first.
2. Complete disassemblythe turbocharger is fully torn down and every major component is inspected individually.
3. Cleaningcomponents are cleaned to remove carbon, oil residue, rust, and contamination.
4. Measurementcritical tolerances are measured against OEM specification.
5. Reassemblyrebuilt using new wear components matched to your specific model.
6. CIMAT VSR balancingthe rotating assembly is balanced in-house, with a balance report included.
7. Final inspectionleak test, visual inspection, and actuator or wastegate function check before shipment.

No work begins without your approval. You receive a quote after inspection, not before.

Pricing

Most rebuilds require inspection before final pricing. Standard rebuild pricing depends on the turbo model, parts availability, wheel condition, shaft condition, housing damage, and whether upgrades are requested. PT Turbo inspects every turbo and sends a quote before any work begins — no surprise charges.

Related Mitsubishi Models

Turbo Models That Fit the Mitsubishi TD05H

• Mitsubishi TD05 Turbo Rebuild Service