Piston suitable for JCB 2CX 3CX 4CX Loaders - AR engine
GX-AFTER

Piston suitable for JCB 2CX 3CX 4CX Loaders - AR engine

Catalog number:02/201805A Nr OEM:02/201805 Manufacturer:GX-AFTER
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103MM ENGINE PISTON (PERKINS AR) SUITABLE FOR JCB - 02/201805

Technical Specification and Compatibility

A precision-manufactured engine piston, a key component in repair kits for Perkins AR engines. Unlike many other Perkins engines (e.g., AA/AB), this AR model features a nominal bore diameter of 103 mm. The piston is the heart of the power unit, responsible for transferring energy from the combusted mixture to the crankshaft. Made from a high-grade aluminum alloy, it ensures optimal thermal expansion and durability.

Part number: 02/201805
Nominal Bore Size (mm): 103
Piston Length (mm): 108.2
Piston Compression Height (mm): 70.3
Piston Bowl Depth (mm): 22
Piston Bowl Diameter (mm): 52.3
Piston Pin Diameter (mm): 39.7
Valve Seat Depth (mm): 1.2 / 1.5
No. of Rings: 3
Weight (kg): 1.655

GX-AFTER is the smart choice for your machine. We provide high-class replacement parts that combine excellent quality with an attractive price. Each part is carefully verified to ensure full compatibility and reliability you can depend on.

Essential for Engine Overhaul

  • › Piston ring set (for 3 rings)
  • › Piston pin (39.7 mm) and clips (circlips)
  • › Cylinder liner (103 mm bore)
  • › Connecting rod bearings

Application in machines

Brand Type / Series / Model
JCB Backhoe Loaders: 2CX, 2DX, 3CX, 4CX
Telehandlers (Loadall)
Wheel Loaders
Skid Steer Loaders (ROBOT)
Rough Terrain Forklifts (RTFL)

The list above is for reference. Fitment is dependent on the Perkins AR (103mm) engine model.

⚠️ Installation Warning

An engine overhaul is a complex process. Piston installation must be done in sterile conditions. Any contamination (dirt, metal shavings) entering the cylinder will immediately score the liner and destroy the engine. Always check piston ring end gaps and piston installation direction.

Part's Role in the Machine and Failure Diagnostics

The piston hermetically seals the cylinder (with piston rings) and transfers the immense force of combustion to the connecting rod. It is one of the most stressed components in the engine. Its failure necessitates a major overhaul.

  • › Loss of compression and hard starting.
  • › Increased oil consumption ("oil burning").
  • › Blue smoke from the exhaust.
  • › Loss of engine power and rough running.
  • › Metallic "knocking" from the engine (cracked piston or worn pin).

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No problem. Our website shows only a few thousand of the over 60,000 parts we have in stock. Contact us – we probably have what you need on the shelf!

🔧 Expert's Guide: Key Installation Tips

  1. Replace as a set: Pistons should always be replaced as a complete set for all cylinders (together with rings, pins, and bearings) to ensure balanced weight, compression, and prevent future failures.
  2. Absolute cleanliness: Before installation, the cylinder and all components must be perfectly clean. Use assembly lube on rings and pin. The smallest piece of dirt acts like sandpaper.
  3. Installation direction: The piston has a mark (e.g., an arrow or "FRONT") indicating its correct orientation towards the front of the engine. Installing it backward will cause failure.
  4. Cylinder verification: Installing a new piston (even nominal 103mm) in a worn ("oval") cylinder is pointless. The cylinder must be verified, honed, or re-linered.

Frequently Asked Questions (FAQ)

1. What is the difference between a 103mm and 100mm piston?

Bore Size is a fundamental engine parameter. 103mm pistons (like this one, for the AR engine) and 100mm pistons (for AA/AB/AK engines) are in no way interchangeable. Installing a 100mm piston in a 103mm cylinder will cause an immediate loss of compression, and a 103mm piston will not physically fit in a 100mm cylinder.

2. How do I know if I need a nominal or oversize piston?

This piston is a nominal size (103 mm). Before purchasing, a mechanic must measure the cylinder bore with a bore gauge. If the cylinder is worn but within tolerance, it can be honed for this piston. If the wear is too great, the cylinder must be "bored" (re-bored) and an oversize piston (e.g., +0.50 mm) must be used.

3. What are valve seat depths (1.2/1.5 mm)?

These are special cut-outs in the piston crown that create "pockets" for the opening intake and exhaust valves. This ensures a safe clearance between the piston at its top dead center and the valves, preventing a collision. The different depths (1.2mm and 1.5mm) are typical for intake and exhaust valves which have different lift heights.

Question mark

Have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you choose the right part to get your equipment back to work as soon as possible.

02/201805A
02/201805
2.11 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
BACKHOE LOADER
FORKLIFT
ROBOT
TELESCOPIC HANDLER
WHEELED LOADER
OEM NUMBERS
02/201805
ENGINE
PERKINS

Specific References

MPN
02/201805
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Piston suitable for JCB 2CX 3CX 4CX Loaders - AR engine

Catalog number: 02/201805A
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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

150.68 zł

net price
122,50 zł
Available in large quantity Temporarily unavailable
122,50 zł
net price

150.68 zł

gross price
Nie możesz dodać więcej produktów
  • You will receive 12 points, it gives you 4.80 zł
  • Lowest price from 30 days before the discount: 150.68 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    BACKHOE LOADER
    FORKLIFT
    ROBOT
    TELESCOPIC HANDLER
    WHEELED LOADER
    OEM NUMBERS
    02/201805
    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
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    Order pick-up - Monday - Friday (8:00 AM – 4:30 PM)

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