Cummins ISB 5.9L Holset Electronic Actuator, Remanufactured (4031337)

Restore Turbo Control on Your Cummins ISB 5.9L with a Remanufactured Holset Actuator

Is your Cummins ISB 5.9L throwing turbo related fault codes, struggling to crank, or showing signs of an electrical fault on the turbocharger? The Holset electronic actuator controls the variable geometry turbocharger on the ISB 5.9L, and when it starts to fail, the symptoms can range from poor boost control to engine codes that point straight at the turbo system. 4BTdiesel’s remanufactured 4031337 Holset electronic actuator replaces that failing component with a part built to OEM specifications, helping you avoid the bigger repair bills that follow when a bad actuator is left in service.

Why Replace a Failing Actuator with a Remanufactured Unit

Electrical components like this actuator take a beating from heat, vibration, and constant cycling, and a failure here can cause boost problems, turbo damage, or hard starting if it goes unaddressed. Replacing it with a quality remanufactured part rather than a worn used unit off another truck gives you a more predictable repair, without paying full price for a brand new OE actuator.

Built in an ISO 9001:2015 Certified Facility for Fit and Function

This 4031337 actuator is remanufactured in an ISO 9001:2015 certified facility, built with hard wearing materials designed to handle the vibration and heat cycling that comes with daily highway use. Each unit is built for fit and function, so it goes on and works the way the original was designed to, without the guesswork that comes with sourcing a used actuator from a salvage yard.

Fitment Information for the Cummins ISB 5.9L Holset Actuator (4031337)

This Holset electronic actuator fits the Cummins ISB 5.9L diesel engine and cross references to part numbers 3598564, 4027563, 4031337H, 4037832, and 4039360. Because diesel electrical components can vary by application, 4BTdiesel recommends submitting your engine serial number or VIN at checkout so the parts team can verify fit before the order ships, helping you avoid the hassle of returning the wrong actuator.

Understanding the Core Charge on This Actuator

This is a core charge item, so you will choose how to handle the core at checkout. You can return your old actuator in advance, which typically adds two to four weeks before your replacement ships, or pay the refundable core charge up front and get your new actuator right away, with the charge credited back once your old core is returned in rebuildable condition. Most shops working against downtime choose to pay the core charge so the truck is not sitting idle waiting on core approval.

Get Your Remanufactured Cummins ISB 5.9L Holset Actuator from 4BTdiesel

FAQs About Cummins ISB 5.9L Holset Electronic Actuator (4031337)

What does the Holset electronic actuator do on a Cummins ISB 5.9L?

The actuator controls the variable geometry turbocharger, adjusting the turbo’s vanes to manage boost pressure. When it fails, you can see poor boost control, turbo related fault codes, or hard starting.

Is this actuator new or remanufactured?

This is a remanufactured Holset electronic actuator, not new. It is built in an ISO 9001:2015 certified facility and tested for fit and function before it ships.

Which Cummins engines does this actuator fit?

This actuator fits the Cummins ISB 5.9L diesel engine and cross references to part numbers 3598564, 4027563, 4031337H, 4037832, and 4039360.

Why does this part have a core charge?

The actuator contains components that can be recycled and rebuilt, so a refundable core charge applies. You can pay the core charge at checkout for faster shipping, or return your old core in advance before the replacement ships.

How long does it take if I return my core in advance instead of paying the core charge?

Returning the core in advance typically adds two to four weeks before your replacement actuator ships, since the core has to be received and approved first. Paying the refundable core charge avoids that wait.

How long do I have to return my core for a refund?

Cores must be returned within 45 days of delivery for full credit. Cores returned between 46 and 50 days receive 50 percent credit, and cores returned after 50 days do not receive credit.

How fast will my actuator ship?

If you pay the core charge, in stock orders placed by 2 PM EST ship the same day, Monday through Friday. Orders returning the core in advance ship after the core is received and approved.

A pre-shipment test video is provided before dispatch.