OEM-equivalent electronics for diesel injection pumps

Designed for workshops and diesel distributors facing OEM supply gaps, legacy failures, and repair uncertainty.

Replacement ECUs · Diagnostics · Test & calibration — engineered in Europe.

One ecosystem: ECU, diagnostics and test & calibration

Herlic Components builds a complete ecosystem for the diesel-pump remanufacturer — OEM-equivalent ECUs, diagnostics, and bench test & calibration.

HC-PSG5

OEM-equivalent replacement ECU for Bosch VP30/VP44 (PSG5) pumps — drop-in, no proprietary software.

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HC-VCI

Bluetooth diagnostic interface for VP30/VP44 (PSG5) pumps — read faults, adjust idle calibration, unlock Ford units, from an Android tablet.

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HC-Bench

Retrofit kit that turns your existing bench into an automated VP30/VP44 pump tester, with a documented report for every unit.

View HC-Bench

Developed and tested with independent diesel workshops across Europe.

Flagship: HC-PSG5 — OEM-equivalent replacement ECU

A brand-new, factory-correct replacement ECU for Bosch VP30/VP44 (PSG5) pumps — drop-in, with no proprietary software. It resolves failures from prior manipulation, donor scarcity, and OEM availability limits.

Brand-new electronics

Supplied on exchange against your original

Drop-in install — no proprietary software

3-year warranty

HC-PSG5 Product Showcase Distributors & Technical information

Why workshops and distributors work with Herlic Components

We focus on predictable outcomes, reduced rework, and long-term availability — built around the day-to-day reality of diesel workshops.

Deterministic outcomes instead of probabilistic repairs

Reduced re-quoting, delays and lost work

Any core condition accepted on exchange

Long-term product support

Built from workshop reality

Herlic Components was formed from years of hands-on diagnostic and repair experience. Our products are developed by analyzing real failure cases and the limitations of existing repair paths — not theoretical lab scenarios. We then industrialised that experience into series-produced units, manufactured in Europe — not one-off repairs.

Our engineering journey

Industry presence

Automechanika Frankfurt 2026

Hall 9.0 · Stand E02

Meet us to see the HC-PSG5, HC-VCI and HC-Bench line in person.

Meet us

News & updates

OEM-equivalent, not proprietary: how HC-PSG5 fits your EPS 815 and calibration workflow

Technical

Donor PSG5 units are scarce and many cores are manipulated. HC-PSG5 is a brand-new, OEM-equivalent control unit that adjusts exactly…

Introducing HC-VCI: Bluetooth diagnostics, idle calibration and Ford unlock for diesel pumps

Product updates

HC-VCI is a Bluetooth diagnostic interface for PSG5-equipped VP30/VP44 pumps — read and clear faults, adjust the stored idle calibration,…

Herlic Components Expands HC-PSG5 Coverage: Nissan

New H-PSG Coverage

Herlic Components is pleased to announce the arrival of new supported Nissan control modules, expanding our OEM-equivalent electronics portfolio and…

HC-Bench: automated VP30/VP44 pump testing with a documented report for every unit

Product updates

HC-Bench converts an existing test bench to automatic operation — it runs standardized test sequences on diesel injection pumps and…

Product details: HC-PSG5

Technical

An OEM-equivalent replacement control unit for Bosch VP30/VP44 (PSG5) pumps — EPS 815-compatible, with dFi adjusted exactly as on the…

Blog & News

Work with Herlic Components

We collaborate with workshops and distributors looking for long-term, reliable OEM-equivalent electronics.