Holset Turbo Rebuild Service

PT Turbo rebuilds and remanufactures Holset 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.

Best For

• Cummins diesel trucks
• Dodge Ram 5.9L and 6.7L Cummins
• Medium-duty trucks
• Semi trucks
• Industrial and agricultural Cummins equipment
• Diesel performance builds

Shop Holset turbochargers in stock at PT Turbo →

Holset Models We Rebuild

About Holset Turbocharger Rebuilds

PT Turbo has been rebuilding Holset turbochargers since 1978, from the fixed-geometry HX-series units found on older 12-valve Cummins to the electronic VGT units on modern 6.7L Ram trucks. We disassemble each unit completely, inspect the shaft, bearings, wheels, and housings, replace the CHRA internals with new components, and balance the rotating assembly to factory tolerance before it leaves the shop.

A proper rebuild is almost always smarter than buying a new or remanufactured drop-in unit. Holset cores are durable and the housings rarely need replacing, so rebuilding your original unit keeps the correct fitment, saves the cost of a complete new turbo, and returns the turbo to spec instead of swapping in an unknown reman. This is for fleet owners, Cummins truck owners, ag and industrial operators, and diesel performance builders who want their turbo done right the first time.

Common Holset Applications

Dodge Ram Cummins Pickups

• 1994-2002 Dodge Ram 5.9L 12-valve and 24-valve (HX35, HY35)
• 2003-2007 Dodge Ram 5.9L common-rail (HY35W or HE341CW to 2004, HE351CW from 2004.5)
• 2007.5-2024 Dodge Ram and Ram 6.7L Cummins (HE351VE VGT to 2012, HE300VG from 2013)

Medium-Duty, Semi, and Commercial Trucks

• ISB Cummins medium-duty trucks (HE341VE, HE351VE); ISC and ISL (HX40W, later HE431VE)
• ISX and Signature series semi trucks (HE451VE, HE551VE, HE561VE)
• Cummins ISM and M11 (HX55) and ISL 8.9L (HE431VE)
• Box trucks, buses, and delivery fleets running B and C series Cummins

Industrial, Agricultural, and Generator Equipment

• Cummins-powered tractors, combines, and harvesters (H1E, HX50)
• Excavators, loaders and other heavy off-highway equipment (HX52)
• Standby and prime power generator sets running B, C, and L series engines

Diesel Performance Builds

• Towing and sled-pull builds upgrading from stock (HX40, HX50, HX55)
• Compound and twin-turbo setups using a fixed-geometry HX as the atmosphere charger
• High-horsepower street and competition Cummins swaps

Common Holset Turbocharger Symptoms

• In-and-out shaft play you can feel, or a compressor wheel contacting the housing, on HX35 and HX40 units
• Oil in the intake or exhaust, showing as blue smoke and a wet intercooler on 5.9L Cummins (check the oil drain and crankcase breather before blaming the turbo’s seals)
• High-pitched whining or siren noise from worn bearings or a damaged compressor wheel
• VGT actuator faults, setting P0045 or P003A on HE351VE Ram trucks and Cummins actuator fault codes on HE431VE engines
• Low boost, sluggish throttle response, and poor towing power from a variable geometry nozzle stuck open
• Overboost spikes or boost that won’t taper from a nozzle stuck closed or a failing actuator
• Black smoke under load when the turbo can’t make commanded boost
• Metal-on-metal grinding, blue smoke at idle, or oil pooling in the downpipe from total bearing failure

Real Holset Failures We See in Our Shop

• On the HE351VE and HE431VE VGT units we rebuild, soot and carbon pack into the variable geometry mechanism and seize the sliding nozzle ring. The actuator keeps commanding movement, the nozzle ring won’t follow, and the truck throws over/under-boost codes long before the bearings ever wear out.
• We frequently see electronic actuator failure on HE351VE 6.7L Ram turbos, where the calibrated motor and gears inside the actuator quit or lose position. People often replace the whole turbo when the core is perfectly good and just needs the sliding nozzle cleaned and an actuator recalibrated.
• On HX35 and HX40 units run hard or on aggressive fuel, we see thrust bearing failure from over-fueling and frequent shifting. The thrust washer wears, axial play opens up, and the compressor wheel walks forward into the cover.
• Oil seal leaks on HX35 and H1C cores are extremely common, usually from a restricted or coked drain line backing oil up in the center housing and pushing it past the seal rings into both the turbine and compressor sides.
• On HX50, HX52, and HX55 performance and industrial units, we see compressor wheel damage and shaft bending from debris ingestion and over-speeding past the wheel’s safe map, often on builds with no air filtration discipline or too much drive pressure.
• On older H1C and HE341CW turbos, we find heat-soaked, hardened center housings where the oil has coked around the bearings from hot shutdowns, wiping the journal bearings and scoring the shaft.

Frequently Asked Questions

How to Identify Your Holset Turbo

The identification tag is typically located on the compressor housing of the turbocharger. It usually lists the model number, assembly number, and serial number. If you’re not sure which Holset 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

Why Customers Choose PT Turbo

• Rebuilding turbochargers, including Holset, 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.

Common Holset Turbo Models We Service

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.

Our standard rebuild prices for Holset turbos:

• Dodge Ram 6.7L Cummins (HE351VE): $825
• Dodge Ram 6.7L Cummins (HE300VG): $875
• Dodge Ram 6.7L Cummins (HE300VG), 2019 and newer: $975
• Cummins ISX (HE400VE): $900
• Cummins ISX (HE451VE): $900
• Cummins ISX (HE551V): $1,100
• Detroit DD15 (Holset HX55): $650

See our turbo rebuild price list for the standard price of each turbo we rebuild.

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