Mitsubishi TD07 Turbocharger: Large Industrial Diesel Applications Guide

The Mitsubishi TD07 turbocharger sits on mid-size Mitsubishi diesels, and our catalog lists it for the Mitsubishi 6D14T, the 7.5L 6D16T in Fuso trucks and Kobelco excavators, and 1987-1990 Mitsubishi Fuso FK415, FK455 and FM555 trucks. That list is short because it only includes what the listings actually name. This guide sticks to it.

PT Turbo has been rebuilding turbochargers in San Bernardino since 1978, more than 45 years now. The rule for TD07 work is the same as for any industrial turbo: the engine name gets you close, and the number on the turbo’s data plate gets you the right part. This guide covers the listed applications, how to read the plate, how the TD07 compares with the TD06 and TD08H, how it fails, and how to get it back in service.

Listed TD07 Applications: Fuso Trucks, Kobelco Excavators and Mitsubishi Engines

These are the TD07-family numbers in our catalog and the applications their listings name. We do not add engines or machines beyond these rows. If your unit is not here, the tag number decides, not the chassis.

Part number	What it is	Listed application
49187-00200	TD07S complete turbo	1987-1990 Mitsubishi Fuso FK415, FK455, FM555
49187-00271	TD07S complete turbo	Mitsubishi 6D16T 7.5L in Fuso trucks and Kobelco excavators
49187-01021	TD07S complete turbo	Mitsubishi 6D14T
49187-08500, 49187-08020, 49187-08050	TD07 / TD07S CHRA (cartridge)	Match to your turbo’s tag number
49187-08060	TD07S-25A CHRA (cartridge)	Match to your turbo’s tag number

All three complete turbos are TD07S units, so copy the full model name and number from the plate, letters included. The cartridges are matched through your turbo’s number, not through a truck or machine model.

Search the turbo store by the number on your tag. Current pricing is on each product page, or call (909) 824-1020. Stock changes daily, so confirm availability before the old unit comes off.

Reading a TD07 Data Plate and Part Number

Every TD07 listing in our catalog begins with 49187, and the TD08H listings begin with 49188 or 49S88. That prefix narrows a search, but it does not prove the frame. The TD08-22D cartridge we list, for example, is 49174-08110.

The code after the dash matters as much as the frame name. On Mitsubishi turbos, codes such as 14B, 16G and 18G name the compressor wheel, and the turbine side goes by the frame. The 25A in TD07S-25A follows that pattern, so two TD07S units can share a frame and still carry different compressor wheels.

Housing casting numbers are not part numbers. One casting serves many turbos, so use casting numbers only to narrow a search. If the plate is missing or unreadable, call with the engine model and serial number, the casting numbers, and clear photos of both flanges and the oil ports.

TD07 vs TD06 and TD08H: Which Frame Is on Your Engine

The TD07 sits between two frames that turn up on the same kinds of equipment. Mitsubishi TD06 turbochargers also run on Fuso FK and FM trucks with the 6M60 engine. Mitsubishi TD08H turbochargers are listed for larger engines, such as the 11.9L Mitsubishi 6D24T and the 15.7L Isuzu 6WG1.

Frame	Engines and machines	What to watch
TD06	Fuso FK and FM trucks with the 6M60	Same truck family as some TD07S listings: read the tag
TD07 / TD07S	Mitsubishi 6D14T; 6D16T 7.5L (Fuso trucks, Kobelco excavators); 1987-1990 Fuso FK415, FK455, FM555	Complete units are TD07S; cartridges match by number
TD08H	Mitsubishi 6D24T 11.9L (Kobelco and Tadano machines); Isuzu 6WG1 15.7L (Hitachi machines); Isuzu 6SD1TC (TD08H-26M); Yanmar 6KH-UTN, 6HA2M, 6HAL	Suffixes such as -26M mark different builds

Two overlaps catch people out. A Fuso FK or FM can carry a TD06 or a TD07S depending on engine and year. Kobelco machines appear under both the TD07S (6D16T) and the TD08H (6D24T). In both cases the badge on the door is not the final answer. The tag is.

Shared frame letters do not mean two turbos interchange either. Flanges, oil ports, housing sizes and compressor wheels can all differ within one frame name. If another machine in the same fleet runs a Cummins B-series, our Cummins QSB turbocharger guide covers those Holset units.

How a TD07 Fails in Trucks and Excavators

A turbocharger shaft lives on engine oil, so anything that cuts off or dirties that oil shows up at the bearings first. Garrett states that more than 90 percent of turbo failures come from oil starvation or oil contamination. A Mitsubishi frame does not change that physics.

Oil starvation and dirty oil

Starvation comes from:

• low oil pressure
• a blocked or leaking feed line
• hard acceleration from cold before oil pressure builds
• a first start on a fresh turbo that was never primed

Contamination scores the bearings and shaft. The usual sources are carbon, engine wear debris, dirt let in during servicing, a faulty filter bypass, and degraded oil.

A hot shutdown does not starve the turbo. It cokes the oil sitting in the center housing. After hard work, idle for the cool-down time your engine maker gives before you shut off.

Dust on the air side

Excavators work in dust, and fine dust shows up as pitting on the compressor inlet blades. Bent or chipped blades are a different problem: impact damage from something solid.

The pipe between the air filter and the turbo is under suction. A crack there pulls dirt in rather than leaking boost. Change the filter when the restriction indicator says so, and check every clamp and seal on that side.

Long idle and the oil drain

Machines that idle for hours can show oil at the turbine end first, and it usually clears under load. The drain is a gravity return. It must run downhill, stay within about 15 to 20 degrees of straight down, and enter the pan above the oil level.

A restricted drain backs oil up and leaks at both ends of the turbo, but it does not starve the bearings.

Symptom	What it points to	Check first
Black or dark gray smoke, low power	Too little air	Air filter, boost leaks, exhaust leaks before the turbine, wheel damage
Blue-gray smoke	Oil burning or passing the turbine seal	Drain routing, crankcase pressure against the service manual, engine wear, long idle
Pooled oil in the intake piping	Oil past the compressor side, or from upstream	Air filter restriction, breather, oil level, drain
Whine or siren noise	Leaks or wheel rub	Exhaust leaks before the turbine, charge-air joints, wheel contact
Wheel touches the housing when rocked	Bearing wear	Oil supply and oil quality before fitting a replacement
Orange-peel texture on the compressor wheel back face, cracked blades	Overspeed	Boost leaks (the turbo spins faster to make target boost)

Inspecting, Rebuilding and Installing a TD07

None of the listed TD07 applications is a 1996-on OBD-II road vehicle, so generic codes such as P0299 do not apply. Diagnosis is physical: a boost reading compared with the maker’s figure for that engine, smoke color, and a look inside both housings.

Some side-to-side rock at the wheel is normal on a journal-bearing turbo with no oil pressure. In-and-out play you can feel, or a wheel that touches its housing when rocked, condemns it. Otherwise, use the maker’s limit for that unit.

On a journal-bearing turbo, copper climbing in oil reports against your own baseline points to bearing wear, because turbo journal bearings are bronze.

Three ways back to work

• Complete turbo: order by the full number on the tag, matched against the listings above.
• New cartridge (CHRA): the shaft, wheels and bearings in their cast-iron bearing housing. A CHRA has no turbine housing and no A/R of its own. Reuse your housings only if they show no cracks and no wheel rub.
• Rebuild your core: our in-house turbocharger rebuild service VSR balances every rebuild on a Vibration Sorting Rig. Each unit then gets a final quality inspection: a leak test, a visual inspection, and a wastegate or actuator function check where the turbo has one. Most rebuilds ship in 3 days or less, and the price is confirmed after inspection, before work starts. See the turbo rebuild price list for current rebuild pricing.

Installation and first start

• Fix the cause first: oil supply, air filter, drain routing, and crankcase pressure against the engine’s service manual.
• Fit a new oil feed line after a bearing failure or coked oil. Do not flush and reuse the old one.
• Use new gaskets, with no sealant on the oil inlet or drain gaskets.
• If a compressor wheel shed metal and the engine has a charge air cooler, replace the cooler, because metal cannot be reliably flushed out of the fins. Clean or replace the charge piping too.
• Fill the oil inlet with clean engine oil and turn the wheel by hand.
• Crank 10 to 15 seconds without starting, stopping fueling by the engine maker’s procedure.
• Idle 3 to 4 minutes and check for oil, exhaust and air leaks before putting it under load.

There is no break-in beyond those first-start steps. Follow the maker’s oil schedule, or its severe-service schedule for dust and long idle, and keep the air system clean and the drain correctly routed. That gives a new or rebuilt TD07 the best chance of a long service life. Questions about a specific unit go to the shop through the contact page or (909) 824-1020.

Frequently Asked Questions

Can a TD06 or TD08H replace a TD07?

Not on the frame name alone. The TD06 is a Fuso FK and FM turbo on the 6M60, while the TD08H is listed for larger engines such as the 11.9L 6D24T, and flanges, oil ports and wheels can all differ. Order by the number on your turbo’s tag, and call (909) 824-1020 if the tag is unreadable.

Can I replace only the cartridge on a TD07?

Yes, when the housings are sound and the cartridge matches your turbo’s number. Our catalog lists TD07 and TD07S cartridges 49187-08500, 49187-08020 and 49187-08050, plus the TD07S-25A 49187-08060. Check both housings for cracks and rub marks before reusing them.

What does a TD07 rebuild at PT Turbo include?

The rebuild is done in-house. The rotating assembly is VSR balanced, and the unit gets a final quality inspection with a leak test, a visual inspection and a function check of any wastegate or actuator. Most rebuilds ship in 3 days or less, the price is confirmed after inspection and before work starts, and the warranty runs 12 months with unlimited mileage.