OEM Clutch Master Cylinder for MG3 – OE 30005107 | XUI3135L

CM246

Technical Specifications Table

Parameter	Details
Xusen Part No.	XUI3135L
OE Reference No.	30005107
Cross Reference	CM246
Compatible Make	SAIC MG
Compatible Model	MG3 (Hatchback)
Engine	1.5L Petrol
Transmission Type	Manual
Drive Type	Front-Wheel Drive
Seal Material	EPDM (DOT 3 / DOT 4 compatible)
Quality Standard	ISO 9001 / TS16949
Export Markets	UK, Australia, Thailand, Chile, Gulf States, China
Packaging	Neutral / OEM / Private Label

The MG3 and Why Its Clutch Parts Are Worth Stocking
The MG3 is a compact front-wheel-drive hatchback produced by SAIC MG, sold across China and a growing number of export markets — including the United Kingdom, Australia, Thailand, Chile, and several Gulf states.
It's positioned as an affordable everyday car for urban drivers, which means high cumulative mileage and a steady flow of wear-part replacements over the vehicle's life.
The clutch master cylinder is one of the first hydraulic components to show wear in high-mileage manual vehicles. In urban driving conditions — frequent stop-and-go, hill starts, heavy traffic — the master cylinder works harder than in highway use.
For distributors managing an MG parts catalogue, this is a predictable, repeatable demand line.

How the Clutch Master Cylinder Works
Pressing the clutch pedal activates this cylinder, which pressurises the hydraulic fluid in the clutch line. That pressure signal travels to the slave cylinder, which physically moves the release fork or bearing to disengage the clutch plate from the flywheel.
The result: the engine and gearbox momentarily disconnect, allowing a clean gear change.
When the master cylinder seal wears or the bore corrodes, fluid bypasses internally — the pedal feels soft or spongy, gear changes become hesitant, or the clutch refuses to fully disengage.
Replacing the master cylinder restores system integrity without needing to overhaul the entire clutch assembly.

What Makes This a Reliable Catalogue SKU
Broad export coverage under one OE number
30005107 applies to MG3 variants sold across multiple regions, so a single SKU in your catalogue covers diverse customer enquiries without version confusion.

Consistent platform demand
The MG3 uses a conventional hydraulic clutch system (not electronic or semi-automatic), meaning the master cylinder is a standard serviceable part with no specialist tools or adaptation required for replacement.

OEM geometry confirmed
Bore size, reservoir port, and pushrod interface are matched to factory spec so the pedal feel and hydraulic response remain true to the original vehicle calibration.

Private label compatible
Available in neutral packaging or with full custom branding. Box design, part labelling, and language content can be adapted to your target market.

Q1: Does this part fit all MG3 variants, including export models?
XUI3135L references OE No. 30005107, which is the standard specification for the MG3 1.5L manual transmission.
This covers both the domestic China version and the major export variants.
If you're stocking for a specific regional variant, we recommend confirming the OE number with your local vehicle data to ensure consistency.

Q2: How do I know the pedal feel won't change after replacing the master cylinder?
The internal bore diameter and pushrod geometry are the main factors governing pedal travel and pressure.
XUI3135L is produced to match OE drawing dimensions on both points, so the hydraulic pressure curve — and therefore the pedal feel — remains consistent with the factory setup.

Q3: What's the difference between a clutch master cylinder and a clutch slave cylinder?
The master cylinder sits at the pedal end and generates the hydraulic pressure.
The slave cylinder sits near the gearbox and converts that pressure back into mechanical movement to disengage the clutch.
They work as a pair — but they fail independently, so it's common for distributors to stock both separately. Xusen manufactures both.

Q4: Is this product available with documentation for import compliance?
Yes. We can provide ISO 9001 / TS16949 certificates, factory test reports, and material declarations as required.
Documentation is typically provided per order upon request.

Q5: Does this replace any other OE numbers for the MG3?
30005107 is the primary OE reference for this application.
If your sourcing records show an alternative superseded number, send it to us for cross-reference verification before ordering.