Mounting rubber - transmission, engine suitable for JCB
GX-AFTER

Mounting rubber - transmission, engine suitable for JCB

Catalog number:SKX950996A Nr OEM:123/03138 Manufacturer:GX-AFTER
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Engine / transmission mount suitable for JCB 2CX / 2DX / 3CX / 4CX – 123/03138

Technical Specifications & Compatibility

Metal-rubber vibration isolator for securing engine and/or gearbox. It attenuates drivetrain vibration transferred to the chassis, stabilises alignment and reduces in-cab noise.

Part number: 123/03138
Cross references: 125/11300, 125/11200, 125/26400, 125/26500
Type: Engine / transmission mounting (metal-rubber)

Tech note: Close variants exist; compare sleeve orientation and dimensions with the removed mount before purchase.

GX-AFTER delivers robust rubber compounds and precisely machined sleeves for long service in harsh conditions.

Machine Applications

Brand (Machine type) Model
JCB (Backhoe loaders) 2CX, 2DX, 3CX, 4CX
JCB (Telehandlers) incl. 520-50, 520-55, 526-55, 526, 528-70, 528S, 530S, 525-50, 525

The list above is indicative. Compare part number and dimensions with your machine’s fitted mount.

Functions & Benefits

  • Dampens engine/gearbox vibration transferred to chassis.
  • Maintains drivetrain alignment and limits movement under load.
  • Reduces noise and improves operator comfort.
  • Rubber hardness ~68 ShA balances durability and damping.
  • Resistant to oils, fuels and temperature cycles.

🔧 Expert Guide: Key Installation Tips

1. Keep orientation

Align sleeve and seat as per original. Reversed fitment reduces damping efficiency.

2. Tighten in stages

Use even torque to avoid twisting rubber or delamination.

3. Inspect hardware

Replace corroded bolts/spacers; check for ovalised bores.

4. Post-install check

Run and load the machine; observe vibration and any movement of the power unit.

⚠️ Safety Warning

Do not install a mount with cracked rubber or corroded sleeves. Incorrect fitment may damage drivetrain mounts.

Role in the Machine & Failure Diagnostics

The mount carries engine/gearbox loads while filtering vibration. Wear quickly affects comfort and component longevity.

  • Increased vibration, knocks under torque — cracked or fatigued rubber.
  • Power unit movement within frame — lost stiffness.
  • Fan or accessory contact marks — excessive mount deflection.
  • Loose/deformed sleeves or bolt holes — replace hardware together with the mount.

Peace of Mind: Why Choose SERWIS-KOP?

Don’t let vibration shorten component life — replace the mount before secondary damage occurs.

Part 123/03138 is available from stock. We will select the correct mount for your machine and arrange prompt shipping.

📞 Not seeing your exact variant?

We show only part of our inventory — over 60,000 parts available. Call us — we’ll confirm fitment and ship swiftly.

Related Items

  • › Mounting bolts / nuts — replace when corroded or stretched.
  • › Spacers / washers — ensure correct alignment and preload.
  • › Other vibration mounts (cabin/frame) — replace as a set for balanced damping.

Frequently Asked Questions (FAQ)

1. What are the common alternatives to 123/03138?

125/11300, 125/11200, plus 125/26400 and 125/26500 referenced in aftermarket listings.

2. Does it fit telehandlers 520-55 / 528-70?

Yes, for selected versions. Always confirm by part number and dimensions against your installed mount.

3. What are typical failure symptoms?

Cracked/delaminated rubber, increased cab vibration, knocks during take-off/gear changes, ovalised bolt holes.

4. Replace singly or as a set?

We recommend replacing mounts on the same side/axis together to maintain damping balance and longevity.

Question mark

Need help? Call: +48 17 864 31 00 — we’ll match the correct mount and arrange swift shipping.

SKX950996A
123/03138
0.23 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
BACKHOE LOADER
TELESCOPIC HANDLER
OEM NUMBERS
123/03138
ENGINE
PERKINS

Specific References

MPN
123/03138
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Manufacturer

  • Serwis Kop Sp. z o.o. Sp. K.
  • Podkarpacka 57a
  • 35-082 Rzeszów
  • Poland
  • [email protected]
  • +48178643100

Responsible person

  • Serwis Kop Sp. z o.o. Sp. K.
  • Podkarpacka 57A
  • 35-082 Rzeszów
  • Poland
  • [email protected]
  • +48178643100
gross price

12.29 zł

net price
9,99 zł
Temporarily unavailable
9,99 zł
net price

12.29 zł

gross price
  • You will receive 1 points, it gives you 0.40 zł
  • Lowest price from 30 days before the discount: 12.29 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    BACKHOE LOADER
    TELESCOPIC HANDLER
    OEM NUMBERS
    123/03138
    ENGINE
    PERKINS

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    WE OFFER PRODUCTS OF THE BEST BRANDS

    SERWIS KOP Sp. z o.o. Sp.k.
    ul. Podkarpacka 57A, 35-082 Rzeszów
    NIP: 813-352-97-49 REGON: 180286726

    Opening hours
    Telephone support - Monday - Friday (8:00 AM – 5:00 PM)
    Order pick-up - Monday - Friday (8:00 AM – 4:30 PM)

    Email



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    Phone
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    +48 17 864 00 24
    +48 17 864 25 96

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