Buy 4032006 - Genuine Cummins Wastegate Actuator - wisentpartscenter.com

Description

Genuine Cummins 4032006 Wastegate Actuator is a pneumatic actuator used on Holset HX35W turbochargers to control the wastegate. Boost pressure acts against the internal diaphragm and spring, moving the actuator rod when the calibrated pressure is reached so excess exhaust flow can bypass the turbine and keep turbo speed and boost under control.

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The 4032006 controls when the turbocharger wastegate begins to open. By bypassing part of the exhaust flow around the turbine once boost reaches the intended range, the actuator helps prevent uncontrolled boost and keeps the turbo working within its designed operating range.

Issue Symptoms / When to Replace

A weak or leaking actuator can cause low boost, slow turbo response, or poor pulling power because the wastegate opens too early. A seized actuator or wastegate can have the opposite effect and allow boost to climb too high.

Brand Information

Holset has specialized in turbocharger engineering since the 1950s and was acquired by Cummins in 1973; the business later became Cummins Turbo Technologies, while Holset remained the turbocharger brand. The HX-series is one of Holset’s long-running wastegated turbocharger families.

Installation Notes

Do not change actuator-rod length or preload without the correct HX35W specification. Incorrect adjustment can cause low boost, delayed wastegate opening, or overboost.

How to Identify an OEM Part

The OEM unit has a factory barcode identification label on the actuator canister.

Why Buy 4032006 from Wisent Parts

  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Warranty & Return Information
Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.