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Inside our
partner factories

See how we choose suppliers and how starters, alternators and turbochargers are built, checked and packed.

Explore the factory tour

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An operator at a starter armature workstation, with parts bins beside the machine.

Quality starts with the right supplier

We start with your part number, application and quality requirements. We then match the job to a supplier with experience making or sourcing that part.

OE-focused factories
Experience making the component to comparable OE specifications.
Aftermarket factories
Established lines that supply repeat orders consistently.
Category specialists
Knowledge of uncommon models and differences in fit.
Trading partners
Many also manufacture. For sourced parts, we check the factory behind the model.

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Copper windings and slotted steel cores on rows of starter armatures at the factory.

Starter motors

Copper windings loop around each armature. After assembly, the complete starter goes on the test bench.

On the test bench

A technician connects the electrical leads to a starter held in the test fixture.

View starter sample report

Connecting a starter motor at the test bench

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Alternators

Alternators line the workbench in two rows. The cutaway below shows the rotor and copper windings inside the housing.

Cutaway alternator with the pulley on the left, the claw-shaped rotor in the centre and the stator windings around it. — Rotor and stator in a cutaway sample

Alternator stators on the workshop fixture — Wound stators on the workshop fixture

Measuring output

At a test voltage of 12.8 V, the sample unit delivered 67 A at 1,800 rpm.

View alternator sample report

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Rows of machined turbocharger housings with the inlet openings facing upward.

Turbochargers

Rows of compressor housings, with their machined inlets and outlets in view.

At the assembly station

A technician holds the cover plate in place and tightens its fasteners with a powered driver.

View turbocharger sample report

A technician tightening a cover plate at the turbocharger assembly station

Factory photo & animation archive

Factory photos & animations

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A turbocharger secured on a flow bench, with a gloved hand at the fixture and pressure and airflow gauges on the monitor.

Inspection and release

With the turbocharger secured in the fixture, the technician can check turbine pressure and airflow on the display.

100%
Units inspected before factory releaseInspected before release
PASS REQUIRED
Only passing units are releasedOnly passing units released
EVERY ORDER
Inspection reports provided

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Sample inspection reports

Our partner factories inspect the parts. We provide a report with every order.

Sample starter test report for model 20607M, with electrical measurements and a load performance chart

Starter performance test

Model 20607M · 24 V · 5.5 kW

Test	Recorded	Specified range
Free-run current	121.50 A	70–130 A
Free-run speed	5,037 rpm	4,000–6,500 rpm
Maximum power	5.89 kW	≥ 5.50 kW

Pass/fail on reportPass

View full report

Sample alternator test report with measured output current at different speeds and an overall pass result

Alternator output test

T-98 test report · 12 V, 90 A rating

Alternator speed	Output at 12.8 V
1,800 rpm	67 A
3,000 rpm	94 A
6,000 rpm	110 A

Pass/fail on reportPass

View full report

Turbocharger balancing record

Model S1B · Certificate 263

Record field	Recorded
Test equipment	REDAT MRV-2
Machine serial number	4019300-087
Maximum imbalance	0.65 g

Pass/fail on reportNot stated

View full report

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Pallets of strapped export cartons on the loading apron, beside shipping containers.

Ready for dispatch

After inspection, packed orders are brought together on pallets at the loading bay.

The open rear of a container truck shows cartons stacked inside for collection.

Loaded for collection

For private-label shipments, we confirm your carton design and shipping marks before packing.

Explore OEM packaging options

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Frequently Asked Questions

Quality checks for starter motors, alternators and turbochargers.

How do you choose a factory for my part?

We start with your part number, vehicle application and quality requirements, then look for a factory with experience making that type of part. For less common references, we work with specialist manufacturers.

Meet our sourcing team

What can I check on a sample before ordering?

In our Ningbo showroom, you can compare a sample’s housing, mounting points and connections with the part you need. Send us your reference before visiting so we can confirm which sample is on display.

See the samples in our showroom

How do I know my parts passed inspection?

The factory releases each unit only after it passes the checks for its model. We provide reports with every order. Depending on the part, a report may record starter free-run speed, alternator output current or turbocharger balancing results.

View sample inspection reports

What do you check before sealing the carton?

We match the part number on the unit to the carton label and check the protection around the part. For private label orders, we also confirm the box and label against the agreed artwork.

Explore OEM packaging See the EURO packaging case study