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This remanufactured Volvo D13 Mack MP8 VGT turbo actuator is a professionally rebuilt Holset variable geometry (VGT) electronic actuator for Volvo D12/D13/D16 and Mack MP7/MP8 engines running HE4XX and HE5XX series turbochargers. The actuator controls the turbocharger’s VGT vane position, regulating boost pressure, throttle response, and emissions performance across the full RPM range.
When a Volvo D13 Mack MP8 VGT turbo actuator fails, common symptoms include limp mode, low power, poor fuel economy, excessive smoke, turbo lag, and fault codes tied to VGT actuator position or boost pressure. Replacing a worn or faulty unit with this remanufactured Volvo D13 Mack MP8 VGT turbo actuator restores correct vane control without the expense of replacing the entire turbocharger.
Note: All VGT actuators must be calibrated to your turbocharger prior to operation using a capable diagnostic tool. Calibration procedures may vary depending on the vehicle application and diagnostic tool used.
Includes a 1-year limited warranty — see our Warranty & Return Policy for full details.
Compatible Applications
This remanufactured Volvo D13 / Mack MP8 VGT turbo actuator fits the following applications. Please verify your actuator part number against the cross-reference list below before ordering.
- Volvo trucks with D12, D13, or D16 engines
- Mack trucks with MP7 or MP8 engines
Why Choose A Remanufactured Volvo D13 Mack MP8 VGT Turbo Actuator?
New OEM Holset actuators carry a steep price tag, and low-cost imitations frequently fail or will not hold calibration. A remanufactured Volvo D13 Mack MP8 VGT turbo actuator from Vortex Turbo delivers OEM-level reliability at a fraction of the cost of a new unit. Every actuator is rebuilt by diesel electronics specialists and ships with a mounting/installation kit — a dependable choice for owner-operators, fleets, and independent diesel repair shops.
Product Features
- Professionally remanufactured by experts in the diesel electronics industry — not just a repaired or cosmetically restored unit
- All high-wear and failure-prone components replaced with OEM or better-quality parts
- Two-stage media blasting process for a new-look satin finish
- Brand-new high-quality Japanese and German-made bearings
- Brand-new interior and exterior bolts
- High-temperature resistant fiberglass sleeving rated for environments up to 1200°F
- Includes mounting/installation kit (P/N: 4034192, 4034193); 1-year limited warranty included
Installation & Calibration Notes
The Volvo D13 Mack MP8 VGT turbo actuator bolts directly to the turbocharger and connects to the OEM wiring harness. After mechanical installation, the actuator must be calibrated to the specific turbocharger using a capable diagnostic tool — an uncalibrated actuator will not correctly control vane position. Contact Vortex Turbo before ordering if you are unsure whether this actuator matches your turbocharger.
Product Specifications
Manufacturer: Holset
Condition: Remanufactured
Make: Volvo / Mack
Engine(s): Volvo D12 D13 D16, Mack MP7 MP8
Turbo Model(s): HE400VG, HE451VE, HE500VG, HE531VE, HE551VE, HE561VE
Actuator Part Number(s): 3789659, 3789659RX, 3789659RV, 2837207, 2837207RV, 4047112, 3787586
Mounting Kit Part Number(s): 4034192, 4034193
Cross Reference Part Numbers: 85013731, 172-032-0059, 1720320059, 21343037, 21517180, 21754439, 28084716, 28209382, 2835950, 2837207, 3780595, 3783399, 3787586, 3789659, 3789659H, 4032170, 4032798, 4034114, 4034114H, 4043487, 4047112, 5359093, 535909300, 535909300H, 5359093H, 599-5002, 5995002, 85013730
