AA-VGT-078
VGT Actuators · 3776172
Reference Price:US $380Ex-works reference price per unit — contact us for volume discounts and shipping.Made in China · Shipped direct from our factory in China
| Actuator Part No. | 2835940; 2837201; 3776172; 3780558; 3789676; 3789677; 3791991; 4032066; 4032673; 4032760; 4032760RX; 4034116; 4034208; 4034210; 4034289; 4034289RX; 4042307; 4045108; 4302760NX; 4304208; 5638668; 5638668RX; 6378270 |
| Voltage | 12V |
| Description | VGT turbo actuator for Holset HE500VG / HE561VE |
| Fits Turbocharger | 2836357; 2838153; 2838154; 2840519; 2840520; 2840521; 2881785; 2881785NX; 2881785RX; 2881997; 2881997NX; 2881997RX; 3767615; 3767622; 3767630; 3774601; 3774612; 3774626; 3774640; 3780526; 3792776; 3792786; 3795162; 4042413; 4045031; 4045034; 4309076; 430907600; 430907600HX; 4309076HX; 4309076NX; 4309076RX; 4955425; 4955425NX; 4955425RX; 4956010; 4956010NX; 4956010RX; 5350611; 5350641; 535064100; 5350893; 535089300H; 5350893H; 5350893HX; 5359785; 5359785NX; 5359785RX; 5456738; 545673800H; 5456738H; 5457297; 5457297NX; 5457297RX; CPL-2732 |
| Turbo Model | HE500VG / HE561VE |
| Replaces OE No. | 2835940; 2837201; 3776172; 3780558; 3789676; 3789677; 3791991; 4032066; 4032673; 4032760; 4032760RX; 4034116; 4034208; 4034210; 4034289; 4034289RX; 4042307; 4045108; 4302760NX; 4304208; 5638668; 5638668RX; 6378270 |
| Application | Cummins ISX, ISX CM570, ISX CM870, ISX CM871, ISX CM871 E, ISX15 CM2250, ISX15 CM2250 SN, ISX15 CM2350 X101, ISX15 CM2350 X114, ISZ13 CM2150 SN, QSX, QSX11.9 CM2250 ECF, QSX15 CM2250, QSX15 CM2250 ECF, QSX15 CM2350 X105, QSX15 CM2350 X106, QSX15 CM570, QSZ13 CM2150 Z101, QSZ13 CM2150 Z102 Diesel Engine |
| Quality Highlights | High-Temp Bearing: stable operation, no seizure or sticking; Reliable Capacitor: low heat, long service life; Precision Gears: fast & accurate response to ECU signals; Laser-Welded Connector: high temperature resistance, no open circuit; High-Torque Motor: compatible with new & used turbos without fault codes |
Voltage12V
Fits / Applications
- Cummins ISX ISX07 Engine
Description
VGT turbo actuator for Holset HE500VG / HE561VE
About AA-VGT-078
AA-VGT-078 is a direct electronic replacement for the OEM variable geometry turbo (VGT) actuator with reference number 3776172. The PCBA, motor and gear set are built to match original calibration — applications include Cummins ISX ISX07 Engine, so the engine ECU reads it like the factory unit — no extra programming in most applications. Rated 12V, every unit is function-tested on a full electronic sweep before packing.
Common symptoms of failure
A worn or sticking VGT actuator usually shows up as one of these symptoms:
- Check engine light with boost-related fault codes (P2563, P00AF, P2262 and similar)
- Sluggish acceleration, heavy turbo lag, or the engine dropping into limp mode
- Rattling or clicking sound from the turbo at start-up or shutdown
- Intermittent power loss that clears after the engine cools down
Why order from the factory
- Factory direct from China — AA-VGT-078 ships from our own production line, no middleman markup
- 100% function-tested before packing, matched to OEM 3776172 calibration
- Cross-reference support: send your turbo or OE number, our engineers confirm the match for you
- Worldwide shipping with tracking, and every inquiry answered within 12 hours
Frequently Asked Questions
Will AA-VGT-078 fit my turbocharger?
AA-VGT-078 is built to replace OEM actuator number 3776172. If the number on your turbo or current actuator is different, send it to us on WhatsApp or email — we cross-reference thousands of turbo and OE numbers and confirm the correct part before you order.
Do I need to program or calibrate it after installation?
No special programming is required in most applications. The unit ships matched to the original calibration, and our engineers double-check the application before dispatch. If a specific model needs a learn procedure, we include the steps with your order.
How do I confirm the actuator is the faulty part?
Common signs include boost-related fault codes, turbo lag, limp mode or clicking noises from the turbo. Our guide "How to Identify a Faulty VGT Actuator in 5 Minutes" walks you through the basic checks with a multimeter before you order a replacement.
How fast do you ship, and is it tested?
Every AA-VGT-078 passes a full electronic function test before packing. We reply to inquiries within 12 hours and ship worldwide with tracking; the ex-works reference price is shown on this page and volume discounts are available on request.
Where are these parts made, and where do you ship from?
Every unit is manufactured in our own factory in China and dispatched direct from China — you are buying from the production line, not from a reseller. Orders ship worldwide with tracking, and we confirm the delivery estimate for your country together with your quotation.
Do you supply wholesale quantities to workshops and distributors?
Yes. The price shown is the ex-works reference price per unit, and volume discounts start from small batch orders. Send us the part numbers and quantities you need — we reply within 12 hours with wholesale pricing and lead time.
Related Technical Guides
- DAF XF 106 480 Turbo Actuator Replacement Guide (OE 5452691) — Why brand-new VGT actuators die within weeks on DAF XF 106 480 trucks (MX13 / MX11 engines
- Why the OEM Part Number Is Mandatory for VGT Actuator Selection — VGT actuators that look identical outside can differ in cooling ports and control software
- What's Inside a VGT Actuator? Core Components Explained — PCBA, servo motor, gears, bearings and harness - what is really inside a VGT actuator, and
- How to Identify a Faulty VGT Actuator in 5 Minutes — Boosting problems, limp mode or P0046 codes usually point to the VGT actuator. Here is the
WeChat: +86 136 5615 7230 · sales@autoactuators.com
Made in China · shipped worldwide from our factory. Can't find your number? Send it over — we cross-reference thousands of turbo & OE numbers.
