Cummins ISX15 / X15 Turbo & Exhaust Manifold Replacement Package | HE400VG HE470VG | 2016–2025
The Diesel Power Source® HE400VG Turbo & Manifold Package combines a brand-new HE400VG VGT turbocharger with actuator, the DPS high-flow ISX15 exhaust manifold, and a complete exhaust manifold hardware kit into one kit for 2016–2025 Cummins ISX15 and X15 engines. This package is designed for trucks that need both a turbo and manifold replacement in the same job, whether due to a failed VGT turbo, a cracked exhaust manifold, or both.
ISX15 and X15 turbo failures often accompany manifold cracking and occur in the same mileage window — and replacing only one leaves the other as a ticking clock. Replacing both together eliminates two of the most common ISX15 failure points in a single installation, saves significant shop labor, and ensures both components are matched for optimal exhaust flow and VGT performance from day one.
Bundle and save. Purchasing the ISX turbo and X15 manifold together saves money over buying each separately, cuts total shop labor by doing both jobs in one teardown, and gives you everything necessary for a clean, complete installation. Whether your truck is emissions-intact or already deleted, we have the right manifold configuration — EGR or Non-EGR. If you only need the turbo, see our standalone HE400VG turbo. If you only need the manifold, see our ISX15 exhaust manifold.
Important: This kit does NOT fit HE451VE applications. The HE451VE uses a different compressor cover and actuator configuration. If your current turbo is an HE451VE (early 2016 and before), contact Diesel Power Source® before ordering.
Why Replace the Turbo and Manifold Together
On Cummins ISX15 and X15 engines, turbo failure and manifold cracking often occur in the same mileage window. A cracked or warped manifold creates exhaust leaks that starve the turbo of drive pressure and increase EGTs. A failing turbo with sticking VGT vanes or actuator issues creates backpressure spikes that accelerate manifold cracking. You’re already removing the same components to do either job — replacing both at the same time is simply the smarter use of shop time and money.
The DPS high-flow ISX15 manifold increases exhaust flow approximately 22%, reduces EGTs by approximately 75–100°F, and delivers measurably earlier turbo spool under load. The new HE400VG turbo with a fresh actuator restores proper VGT function, stabilizes backpressure, and protects the new manifold. Upgrade to the HE470VG 70mm compressor option and you add improved airflow, lower EGTs, better fuel mileage, and more HP capability — all in the same bolt-on installation.
What’s Included in This Package
HE400VG VGT Turbocharger
- Two compressor options: HE467VG (67mm, up to ~575 HP) or HE470VG (70mm, up to ~700 HP)
- 7-blade forged machined compressor wheel (FMW)
- 11-blade turbine wheel (72mm inducer, 68mm exducer)
- Brand-new electronic VGT actuator (not remanufactured), pre-calibrated
- New intake air temperature sensor
- New gaskets
- No core charge
The HE467VG 67mm compressor matches the largest factory wheel size and is a direct performance replacement — spools the same as stock with improved build quality and durability. The HE470VG 70mm is exclusive to Diesel Power Source® and is where the real performance gains are. The larger 70mm wheel moves more air without spinning as hard to deliver the same power — reducing heat, extending turbo life, and putting less stress on the entire system. Customers upgrading to the HE470VG have reported 5–8% HP improvement and up to 12% better fuel mileage compared to the stock HE467VG factory wheel size. Recommended for applications above 500 HP, heavy haulers, and any owner who wants more out of the platform.
DPS High-Flow ISX15 Exhaust Manifold
- Press-fit 3-piece expansion design for thermal durability
- Increases exhaust flow approximately 22% over the factory manifold
- Reduces EGTs approximately 75–100°F under load
- Approximately 200 RPM earlier turbo spool — noticeable on grades and heavy pulls
- High Silicon Molybdenum Ductile Iron (HSMD) construction
- Available in EGR and Non-EGR configurations
- Available with 1,000° or 1,800° ceramic coating
Exhaust Manifold Hardware Kit
- 12 bolts, 12 spacers, 5 gaskets
- Turbo studs and nuts
- Fits ISX15 CM2250 CM2350 & CM2450 trucks
- Exceeds OEM specification for sealing and durability
Manifold Selection Guide
| Option | Emissions / EGR Configuration | Coating | Best For |
|---|---|---|---|
| Non-EGR, 1,000° coating | Without emissions (deleted / Non-EGR) | Standard ceramic | Deleted trucks, cost-effective option |
| Non-EGR, 1,800° coating | Without emissions (deleted / Non-EGR) | High-temp Cerakote | Deleted trucks, maximum heat protection |
| EGR, 1,000° coating | With emissions (EGR intact) | Standard ceramic | Emissions-intact trucks, cost-effective |
| EGR, 1,800° coating | With emissions (EGR intact) | High-temp Cerakote | Emissions-intact trucks, maximum heat protection |
The 1,800° Cerakote coating provides the highest level of thermal protection and is recommended for trucks operating in sustained high-load conditions such as heavy hauling, mountain grades, or hot-climate operations. The 1,000° standard ceramic coating provides excellent heat resistance for standard commercial duty cycles.
Turbo Compressor Options
| Turbo Option | Compressor | Max HP | Recommended Use |
|---|---|---|---|
| HE467VG (Stock Size) | 67mm inducer, 7-blade FMW | ~500 HP | Direct stock replacement, fleet use, emissions-intact trucks |
| HE470VG (70mm) — DPS Exclusive | 70mm inducer, 7-blade FMW | ~700 HP | Performance upgrade, heavy hauling, 5–8% HP gain, up to 12% mileage improvement |
Common ISX15 / X15 Failures This Kit Solves
- Cracked or warped exhaust manifold causing exhaust leaks, smoke at the manifold, and reduced turbo efficiency
- Failed VGT turbo or actuator causing low boost, turbo position faults, or black smoke
- Laggy turbo response from worn turbo bearings or sticking VGT vanes
- Leaking manifold joints from thermal cycling and OEM gasket deterioration
- Repeated turbo failures caused by a cracked manifold starving the turbo of proper exhaust drive pressure
Fitment
This kit fits 2016–2025 Cummins ISX15 and X15 engines with CM2250 (some years), CM2350 and 2450 platforms. ESN verification is required before shipment. Compatible with Freightliner, Peterbilt, Kenworth, Volvo, International, and Western Star platforms. Jake brake / engine brake functionality is fully preserved. After installation, re-torque all manifold and turbo bolts after the first 100 miles at operating temperature.
Select your manifold configuration at checkout: EGR (emissions intact) or Non-EGR (deleted). Select your coating level: 1,000° or 1,800°. Select your turbo compressor size: 67mm or 70mm.
Not compatible with HE451VE turbo applications.
Fitment Verification Required: If your current turbo has BOTH of the following, this HE400VG turbo will NOT fit your application: (1) an elongated compressor cover, and (2) an actuator with two coolant ports. See the fitment verification image in the product gallery. If you are unsure, submit your ESN and our team will confirm the correct turbo for your engine.
About the Manifold Joint Seal
Every DPS multi-piece manifold uses a hard, metal-to-metal press-fit seal at each joint — no gasket. The seal tightens through thermal expansion and performs best at driving temperatures (750°F and higher). Minor leakage at cold or idle is normal and expected on any joint-style manifold and is not a sign of a defective part.
Every manifold is pressure-tested leak-free at room temperature before it leaves our facility. For a full explanation of how the seal works, why soapy-water idle tests aren’t a valid diagnostic, and how the multi-piece design outlasts single-piece manifolds, see:
Understanding DPS Multi-Piece Exhaust Manifolds →
Warranty
This Diesel Power Source® turbo and manifold package includes a 1-year warranty on the turbocharger and is backed by our technical support team.
Related ISX15 / X15 Products
Frequently Asked Questions
On ISX15 and X15 engines, turbo failure and manifold cracking often happen in the same mileage range. A cracked manifold creates exhaust leaks that reduce turbo efficiency and increase EGTs. A failing VGT turbo creates backpressure spikes that accelerate manifold cracking. Replacing both at once eliminates the two most common ISX15 failure points in a single installation, reduces total shop time, and ensures the components are matched for optimal performance.
The EGR manifold is designed for trucks that still have factory emissions equipment (EGR system) intact. The Non-EGR manifold is designed for trucks that have already been deleted. Select the configuration that matches your truck at checkout. Both manifolds share the same high-flow press-fit 3-piece design and offer up to 22% more exhaust flow than the factory manifold.
Both coatings provide thermal protection for the manifold. The 1000° coating is standard and handles typical commercial duty cycles well. The 1800° coating provides higher-temperature resistance and is recommended for heavy-haul applications, mountain driving, hot-climate operations, or any use with sustained high-load EGTs. Both coatings are applied before shipment.
Yes. The package price is lower than purchasing the HE400VG turbo and DPS manifold as separate products. You also save on shipping and reduce total installation time by having both components ready to install in one job.
Yes. The package includes a complete exhaust manifold hardware kit with 12 bolts, 12 spacers, 5 gaskets, turbo studs, and nuts. The hardware kit is designed to exceed OEM specifications for sealing and durability on CM2250 and CM2350 engines.
1 Review
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Turbo for 2018 ISX15
It bolts right in i do suggest that you get new studs and bolts it would be nice if it was a option for it. Over all very satisified with it. Comes with gaskets too. You do have to pull parts off old turbo so make sure you check everything.
