Turbo Bearing Housings

New Center Housings for Holset HE451VE, HE551VE, HE561VE and HE400VG Turbochargers

The bearing housing — also called the center housing — is the structural core of the turbocharger. It holds the journal bearings and thrust bearing that support the rotating shaft, carries the oil feed and drain passages, and on water-cooled models includes coolant channels that protect the oil from coking at shutdown. When the housing itself is cracked, corroded, or has scored bearing bores, no amount of new bearings or seals will save the rebuild. We stock brand new bearing housings for Holset VGT turbochargers on Cummins heavy-duty engines: HE451VE and HE400VG for ISX and X15, HE551VE for ISX CM870, and HE561VE for EPA07 platforms. Each housing is new cast iron, machined to OEM-spec bearing bore tolerances, and matched by turbo part number. Turbo rebuilders, shops and distributors order from US stock.

100% Brand New
OEM-Spec Bearing Bore Tolerances
US Stock, Fast Dispatch
Direct-Fit Replacement
1-Year Warranty
Bulk & Distributor Supply
No Core Charge

3767615 4309076RX Bearing Housing for 2005-2013 Cummins ISX ISX07 HE561VE

3767615, 4309076RX

2842412 2881994 Bearing Housing for Cummins ISX QSX15 CM870 HE551V

2842412, 2881994

2882111 2882110NX Bearing Housing for 2009- Cummins HE451VE HE400VG ISX15 QSX

2882111, 2882110NX

5459710RX 5358001 Bearing Housing for 2017-2021 Cummins X15 HE400VG EPA17

5459710RX, 5358001, 5459710

The Structural Core That Holds the Rotating Assembly Together

The bearing housing is the one turbo component you cannot fake with a gasket or a seal. If the bores are worn, the oil passages are corroded, or there is a hairline crack in the casting, the turbo will fail again regardless of what new parts go inside it. A quality new housing is the foundation of every rebuild that lasts.

The Structural Center of the Turbocharger

The bearing housing is the part everything else bolts to — it carries the shaft and bearings, sets the oil film clearances, and connects the compressor and turbine housings into one assembly. Every dimension in it controls how the rotating group lives. Our housings are new iron castings machined to OEM-spec bore diameters and surface finishes.

Oil and Coolant Passages Built Into the Casting

The oil feed and return passages are cast and drilled into the housing, and on water-cooled models the coolant jacket is too. Partially blocked oil passages are a hidden killer in rebuilds — the bearings starve while everything looks fine from outside. A new housing starts with clean, full-flow passages.

Matched by Turbo Model and Bearing Configuration

Housing dimensions and oil passage routing vary between Holset model revisions. We match by the turbo's Holset or Cummins part number to ensure the bearing bores, seal surfaces and bolt pattern align with your specific rebuild.

Replace When Bore Dimensions Are Out of Spec

A rebuilder can install perfect bearings, a new shaft, new seals — and still get a comeback if the housing bore is egg-shaped or the oil passages are partially blocked with carbon. Inspecting the housing is step one of any serious rebuild. When it fails inspection, a new housing is the only correct path.

Ships New, Ready for CHRA Assembly

Brand new, not salvaged from a core, not line-bored from a worn unit. No core charge, nothing to return. A salvaged housing carries the previous owner's oil history, thermal cycles and potential micro-cracks — a new casting starts clean.

Rebuild-Shop Supply for In-House Turbo Work

Rebuild shops doing in-house turbo work order housings as regular bench stock. We stock housings for the HE451VE, HE400VG, HE551VE and HE561VE — the highest-volume heavy-duty VGT turbos in the rebuild market — at consistent wholesale pricing from US inventory. One-year warranty on every housing, handled by our US team: warranty page.

The Structural Center of the Turbocharger

Oil and Coolant Passages Built Into the Casting

Matched by Turbo Model and Bearing Configuration

Replace When Bore Dimensions Are Out of Spec

Ships New, Ready for CHRA Assembly

Rebuild-Shop Supply for In-House Turbo Work

WHY CHOOSE US

Rebuild-grade housings, rebuilder-friendly terms

We stock new bearing housings for the turbo models rebuilders work on most, verify the part number match before dispatch, and price for shops that do this work regularly. Same housing, same price, same verification — order after order. More about our company and quality process.

FAQ

The bearing housing (center housing) is the main structural body of the turbocharger. It supports the rotating shaft through journal and thrust bearings, routes engine oil to lubricate and cool those bearings, and on water-cooled models circulates coolant to prevent oil coking at shutdown. It also carries the compressor-side and turbine-side seals that keep oil inside the bearing cavity.

Replace the housing if you find any of these during a rebuild teardown: scored or out-of-round bearing bores (measure with a bore gauge — even a few ten-thousandths matters), cracked casting (especially around oil drain or mounting bolt holes), corroded or blocked oil feed passages, damaged coolant channels on water-cooled units, or a scored seal plate bore that cannot be corrected with a new back plate alone.

Holset HE451VE, HE400VG, HE551VE and HE561VE — covering Cummins ISX, X15 and EPA07 ISX CM870/CM871 heavy-duty engines. Each product page lists the exact Holset and Cummins part numbers covered.

All housings are 100% new iron castings, machined to OEM-spec tolerances. No salvaged cores, no line-bored used housings. No core charge, nothing to return. One-year warranty.

Yes. We sell the bearing housing as a standalone component — you supply the bearings, shaft, seals and wheels from your own rebuild inventory. This is how most professional turbo rebuilders order: individual components matched to the specific unit on the bench.

Yes. Turbo rebuilders and remanufacturers order bearing housings as a regular rebuild component. Consistent wholesale pricing, US inventory, matched by part number on every unit. See the wholesale page.

Turbo Bearing Housing: What Rebuilders Need to Know

The bearing housing is the most overlooked component in a turbo rebuild. Shops meticulously balance the rotating assembly, install new bearings and seals, then bolt the whole thing into a housing that has 400,000 miles of thermal stress baked into the casting. When the turbo comes back six months later with bearing wear, the housing is rarely the first suspect — but it should be.

What Lives Inside the Bearing Housing

The housing is not just a shell. It contains precision-bored journals for the floating bearings, a thrust bearing pocket with controlled depth, oil feed drillings sized to deliver the correct flow rate and pressure to each bearing surface, oil drain cavities large enough to prevent pooling, and on water-cooled Holset models (common on the HE400VG and later HE451VE units) a separate coolant circuit that protects the oil from coking during hot shutdowns. Every one of these features has a machined tolerance that matters.

How Bearing Housings Fail

Bore wear — journal bearing bores go out of round over hundreds of thousands of miles. The oil film thins on the tight side, bearing temperatures rise, and wear accelerates. A bore gauge catches this during teardown.
Oil passage coking — carbon buildup from degraded oil gradually restricts the feed passages, starving the bearings even when the external oil supply is fine. Common on trucks with extended oil change intervals or frequent hot shutdowns without idle-down.
Casting cracks — thermal cycling creates micro-cracks, especially around the oil drain and mounting bolt holes. A crack that weeps during a bench pressure test will leak under operating heat and vibration.
Coolant passage corrosion — on water-cooled housings, coolant contamination or neglected coolant changes corrode the internal passages. Restricted coolant flow leads to oil coking in the bearing area.

Inspection Checklist During Rebuild Teardown

Measure journal bearing bores with a bore gauge at two axes — compare to OEM spec. Out-of-round beyond tolerance means the housing is done.
Visually inspect oil feed and drain passages for carbon restriction. Push a light through the feed drilling — if light is dim or blocked, the passage is coked.
Pressure-test the housing if a crack is suspected. Dye penetrant inspection catches surface cracks that a visual pass will miss.
On water-cooled housings, flush the coolant passages and check for flow restriction or discolored coolant residue.
Inspect the thrust bearing pocket depth — a worn pocket allows excessive axial play even with a new thrust bearing installed.

New Housing vs Line-Bored Salvage

Some shops line-bore worn housings back to an oversize dimension and run oversize bearings. It works in theory, but the oil film dynamics change with the larger bore, and there is no way to restore coked internal passages or heal a micro-crack by machining. A new casting starts with zero thermal history, correct bore dimensions, clean oil passages and full structural integrity. For a component that costs a fraction of the total rebuild and determines whether everything else inside the turbo survives, new is the right call.