Air and Fuel Superchargers, Turbochargers and Components

Holset

Super Turbocharger 46mm Compressor 6cm² Turbine

$1,195.00

SKU: HX30W

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The Holset HX30W Super Turbocharger is a compact, high-performance unit designed for custom diesel turbo upgrades. It offers a balance of spool-up speed, peak power, and versatility, making it suitable for a range of applications.

This turbocharger features a 46mm compressor wheel inducer and a 6cm² turbine housing, which contributes to faster spool times and improved throttle response. It is known for its durability and efficiency, capable of handling moderate to high exhaust flow.

The HX30W is ideal for street driving, motorsports, and off-road vehicles where quick response and low-to-mid range power are essential. It is also noted for its high efficiency at various boost pressures and its reliability, especially when replacing electronically-actuated VNT turbochargers.
Show original supplier description
The Holset HX30W Super Turbocharger is engineered for custom performance diesel applications, offering a compelling blend of rapid spool-up, robust power delivery, and enduring reliability. It is a preferred choice for professionals and enthusiasts alike, frequently integrated into Cummins 4BT builds, industrial machinery, and marine setups. This specific HX30W model is equipped with a larger 46mm compressor wheel inducer compared to standard HX30 variants (40mm-44mm), facilitating greater airflow for increased power potential. The accompanying 6cm² turbine housing is key to its performance characteristics, enabling quicker boost response and reduced turbo lag. This setup is particularly beneficial in scenarios demanding fast acceleration and immediate power, such as street driving, competitive motorsports, and demanding off-road conditions. The turbocharger boasts a 65mm inducer turbine wheel and a 52mm exducer, with a single-scroll, 6cm² A/R turbine housing designed for optimal spooling. The compressor side features a 46mm inducer and a 78mm exducer, housed within a large inlet (~102mm) and outlet (~74mm) compressor cover. It utilizes an oil-cooled system and an internal wastegate, with a maximum boost pressure rating of 25-35 psi. Installation and optimal performance require supporting modifications. These include an upgraded intercooler, larger injectors, an upgraded fuel system, a boost controller, and a high-flow exhaust system. A custom exhaust manifold with a T3 flange is recommended for reduced back-pressure and improved flow into the turbine. Proper tuning, such as a dyno tune or custom ECU remap, is essential to optimize air-fuel ratios and boost pressures for peak performance and engine longevity.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHolset
Part NumberHX30W
CategoryAir and Fuel

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy