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Dieselink • Premium XPI Injector Manufacturing

Audit-ready XPI injector manufacturing for industrial supply chains

We build XPI injectors with controlled process discipline, cleanliness practices aligned to CES 16599, and QR traceability from core-part measurement to trim code generation — so your qualification can move faster and stay stable at scale.

Request a QuoteDownload Capability DeckSee the Manufacturing System

Reply within 24h • NDA available • Sample EOL report on request

CLEANLINESS + TRACEABILITY
Cleanroom assembly & verification environment
2019 (CXMC) • 2021 (CFSW)
Cummins supplier reference
1000h engine bench @110% load (2019)
Cummins HQ validation
400+ pcs/day (model 2872544)
Peak delivery
QR → test → trim code → report
Traceability built‑in
Audit-ready systemControl plan • Standard work • MSA • SPC • FMEA
Cleanliness controlDust-free zones • Ultrasonic cleaning • Test & report
Documentation outputsDimensional / performance tests • Traceability record
Trim code workflowModel-based 5/6-point logic • Laser marking

Global Delivery Footprint

Dieselink XPI injector assemblies have been delivered to customers in the highlighted regions (direct supply and distributor programs).

Contact us to confirm lead time, packaging, and required documentation (test report / cleanliness / traceability) for your destination. Coverage updates as programs expand.

Programs & factory references

Founded in 2015, we specialize in the manufacturing and validation of critical components for diesel fuel systems, such as common-rail injectors. We believe that robust process control—not a single sample—best represents true mass-production capability. That’s why we continuously invest in our quality system and validation capacity, building a closed-loop quality management framework that is traceable, measurable, and continuously improving across the full value chain—from incoming inspection and machining to assembly and final shipment. Our core team brings 50+ years of combined industry experience in fuel systems, enabling end-to-end collaboration from drawing review and process planning to validation and volume production delivery.

2015
Company founded; focus on manufacturing + validation of critical fuel-system components
Core milestone.
2016–2018
Established core processes and quality system
Production lines, key equipment, and test/validation capability (core milestone).
2019
Injector supplier for China Cummins engine remanufacturing factory (CXMC)
Produced remanufactured Bosch common rail injectors (program reference).
2019
Validation reference at Cummins HQ (Columbus, Indiana)
110% load 1000h engine bench durability test passed (reference).
2021
Supplier for China Cummins fuel system factory (CFSW)
OEM XPI injector supply; peak daily delivery >400 pcs/day; model 2872544.
  • Process Quality Control (Mass Production Consistency): Systematic management including Control Plans, Standard Work Instructions, Measurement System Analysis (MSA), Statistical Process Control (SPC), and Failure Mode and Effects Analysis (FMEA).
  • Validation & Testing: Full dimensional inspection / dimensional reports, performance testing, transparency testing, durability testing, 500-hour cold-drag durability, and cleanliness testing, among others.
  • Drawing & Change Management: Supplier drawings are reviewed and then integrated into the customer’s drawing system for closed-loop tracking, ensuring controlled changes and consistent mass production.
Factory exterior with signage
Factory Exterior Establishing Shot
Cleanroom assembly and verification workstations
Cleanroom Quality Control Workflow
Machining and production line overview
Advanced Production Facility

What we do

Dieselink is an independent manufacturer of diesel fuel system components, specializing in XPI injectors. We focus on repeatability: process control + measurement + test + traceability — not single-piece output.

Delivery & evidence with every injector

  • Test report

    PDF/CSV report with full end-of-line test results.

  • QR traceability

    Unique QR code with infraction + test data linked.

  • Serial matching

    Serialized matching core parts record + shipment record.

  • Cleanliness data

    ISO cleanliness result tied to the injector.

  • Trim code

    Trim code generated via controlled workflow, laser-marked on unit.

  • Program records

    Documented records for customer-specific programs (optional).
Finished XPI injector assemblies staged for shipment
Finished injectors staged for test / shipmentRepeatability

Built for

  • Remanufacturing programs that require stable performance and documentation.
  • Aftermarket brands qualifying a consistent XPI source with traceable records.
  • Buyers who need evidence (test + cleanliness + traceability), not only claims.

Why XPI is difficult in the service market

XPI is an ultra-high pressure common rail system developed by Cummins and Scania (development started in 2005; up to 2500 bar). In the service/repair market, official repair standards, core parts, and technical support can be limited — and calibration depends on trim code.

Key takeaway
Trim code isn’t optional

Test results must be converted into a trim code. Using an incorrect code can lead to knocking, vibration, smoke, noise, and unstable operation.

  • OEM positioning may prefer replacement over field repair; repair standards and core parts are not always available in aftermarket channels.
  • Cummins uses a proprietary trim-code algorithm (based on 5-point/6-point test values); this requires dedicated test interface + software.
  • Without correct test-to-code workflow and process control, repeatability becomes the main risk in qualification.
Example: flow dispersion (big fuel point)
BrandTypical dispersion (example)
Denso
±8
Bosch
±10
XPI injector
±20
Source: provided market intro deck. Values are examples for illustration of calibration sensitivity.
Injector test and verification station
Injector test and verification station
Why XPI needs trim code — View report (PDF)

Why We Can Manufacture XPI Injectors at Scale

XPI injectors demand rigorous control over core subcomponents, test standards, and calibration integrity (Trim Code). We have built an end-to-end capability loop—from OE-grade parts sourcing to OEM-level testing and encrypted trim-code generation—so every injector delivers consistent performance before installation.

OE-grade core subcomponent sourcing

Access to key components including Solenoid, Nozzle, Valve repair kit, and Needle to ensure consistency from the start.

SolenoidNozzleValve repair kitNeedle
OEM-level test programs & standards

Proven test standards, test software, and model-specific test plans/conditions for repeatable and comparable validation.

Test standardTest softwareModel-specific plans
Encrypted trim-code generation & laser marking

Encrypted trim-code software matched to the test bench converts test data into the correct Trim Code, and supports laser marking for identification and calibration integrity.

Trim codeEncryptLaser marking
Audited manufacturing documents & process control

Our process and control documentation (e.g., standard work instructions) are reviewed and guided to support stable mass production.

Control planSWIMSASPCFMEA
Traceability QR links the injector to records across assembly, testing, marking, and shipment.
Trim code
Laser marking

Traceability

Traceability & Trim Code Workflow

Every injector is assigned a unique QR identity and connected to core-part measurement records, assembly decisions (shim grading), end-of-line test results, and the generated Trim Code—enabling fast report retrieval and lot-level analytics.

Closed-loop workflow (high level)

  1. Measure
    Critical dimensions are captured and rechecked for repeatability (e.g., armature lift verified multiple times; 3,000+ data points used for statistical analysis).
  2. Assemble
    The assembly system retrieves dimensional records via QR and calculates shim size (grading) to control assembly accuracy at the micron level.
  3. Test
    Customized test equipment stores results in a database, with test reports saved for retrieval and analysis.
  4. Code + mark
    Trim Code software pulls validated test values from the test report, generates the Trim Code, and sends it to laser marking for permanent engraving.
  5. Ship + retrieve
    At shipment, scanning the QR code retrieves the factory test report from the database for printing and tracking.
Measurement and assembly data interface screenshot
Engineering / quality team reviewing reports
Laser marking station used for trim code engraving
QR label used for traceability
Packaging & shipping station

Production control process

From core-part machining and inspection to report printing at shipment, the process is designed for repeatability and traceability.

Core part production & inspectionClearance/matching, burr inspection, grinding, EDM, flow checks

The deck lists core-part manufacturing and inspection controls applied before final assembly.

  • Automatically test clearance and matching of parts.
  • Burr inspection of small holes; inspect sealing surface after grinding.
  • High precision grinding; EDM processing; high pressure flow test; extrude honing.
  • Micro hole processing and testing (Nozzle, Valve).
Cleanliness control (CES 16599)Dust-free workshop, wind shower entrance, ultrasonic cleaning, test reports

Cleanliness controls and testing are listed against Cummins CES 16599 expectations.

  • Dust-free workshop, wind shower room entrance, material buffer room.
  • Multi-slot ultrasonic cleaning machine; dust-proof clothing.
  • Cleanliness test with testing report; CES 16599 cleanliness standards.
Precision measurement & analysisSmall parts, springs, armature, installation dimensions

Measurement and analysis are used to reduce dispersion and support consistent assembly.

  • Measurement of small parts, springs, armature, and installation dimensions.
  • Armature lift rechecked five times; >3000 data sets collected for statistical calculation.
Intelligent assembly + traceabilityQR-based lookup, shim grading, μ-level assembly accuracy

An intelligent assembly system links parts, dimensions, and assembly settings via QR.

  • QR code on injector body for tracing.
  • System retrieves core parts dimensions based on QR, calculates shims size (grading).
  • Controls assembly accuracy at the μ level (per deck).
Testing equipment + data managementCustomized testing equipment, test report saving

Testing and data capture are integrated with reporting workflows.

  • Customized testing equipment.
  • Test report saving; intelligent repair interface (as described in the deck).
Trim code management + laser markingScan QR, fetch test values, generate code, engrave

Trim code generation is driven by test results and executed via laser marking.

  • Scan QR code; software retrieves test values from the injector’s test report.
  • Generate Trim code and send it to the laser marking machine for engraving.
Report printing at shipmentWarehouse scan → database fetch → print → pack

At shipment, the database can retrieve the factory test report for printing.

  • Warehouse opens report-query software and scans the injector QR.
  • Database pulls the factory test report based on the serial information.
  • Printer outputs the test report for packaging with the injector (as required).

Engineering & customization

Need a model not in the
catalog? We can build it.

Beyond standard models, we support customer-requested development where feasible — using a controlled workflow from inquiry to pilot run to release.

Get Feasibility ReviewDownload Capability Deck
  1. Inquiry & feasibility
    Part number, application, targets, volumes, documentation needs.
  2. Drawing / spec alignment
    Work from customer requirements, samples, and controlled characteristics.
  3. Prototype build
    Process route + critical dimensions verified before assembly release.
  4. Validation & calibration
    Dimension, performance, cleanliness, and trim-code workflow verification.
  5. Pilot → production
    Controlled ramp with traceability, test report outputs, and feedback loop.

What makes this credible for XPI

The factory workflow is built around XPI realities: dispersion control, correct trim code generation, cleanliness discipline, and database traceability that supports both procurement and service.

RFQ

Let’s talk sourcing

Send your XPI injector requirements and we’ll build a priced proposal + deliverables checklist based on the right test program/standard for your model—so validation, traceability, cleanliness, and trim-code needs are clear from day one.

Include these details

  • Reference part number(s) / model coverage
  • Pilot build size + rolling annual demand (for capacity and material planning)
  • Destination region + compliance / pack-out preferences
  • Required outputs: factory test report, CES 16599 cleanliness evidence, QR trace records, trim-code marking expectations
Peak 2000+ pcs/day delivery
Control Plan • SPC • MSA • FMEA
CES 16599 cleanliness control
QR traceability + trim-code generate / engrave

Cummins, Scania, Bosch, Denso, and XPI are trademarks of their respective owners. Dieselink operates as an independent manufacturer.