Front crankshaft oil seal suitable for JCB 3CX 4CX
GX-AFTER

Front crankshaft oil seal suitable for JCB 3CX 4CX

Catalog number:SKX989038A Nr OEM:320/03119 Manufacturer:GX-AFTER
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Front Crankshaft Oil Seal suitable for JCB DieselMax / EcoMax - 320/03119

Technical Specification and Compatibility

A high-quality 320/03119 front crankshaft oil seal by GX-AFTER. This is a critical seal fitted in the timing cover, providing a seal for the crankshaft at the front of the engine. It fits all JCB machines equipped with JCB DieselMax, EcoMax, and Stage V engines (produced from 2005 onwards), including 3CX, 4CX backhoe loaders, telehandlers, and many others.

Part Number: 320/03119
Type: Crankshaft Oil Seal (Front) / Simmering
Location: Timing Cover
Engine Compatibility: JCB DieselMax / EcoMax / Stage V (from 2005)

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

Features of the 320/03119 Seal

Oil and Heat Resistant: Made from high-quality materials (e.g., Viton) to withstand constant contact with hot engine oil and high temperatures.
Dynamic Sealing: A precision sealing lip with a garter spring ensures a perfect seal against the rotating crankshaft.
Engine Protection: Prevents oil from leaking out and stops dust and dirt from entering the timing case.
Wide Application: A single part number fits the entire family of JCB DieselMax/EcoMax/Stage V engines, simplifying selection.

Application in machinery

Brand Type / Series / Model
JCB Backhoe Loaders: 2CX, 2DX, 3CX, 4CX, 5CX, MIDI CX (with DieselMax/EcoMax engines, post-2005)
JCB Telehandlers (Loadall): 505-560 Series (with DieselMax/EcoMax engines)
JCB Wheel Loaders: 406-467 Series & TM200-TM320 Series (with DieselMax/EcoMax engines)
JCB JS Excavators (Tracked & Wheeled): e.g., JS120, JS130, JZ140 (with DieselMax engines)
JCB Skidsteers (Robot): 225-330 Series, Teleskid (with DieselMax/EcoMax engines)
JCB Rough Terrain Forklifts (RTFL): 921-950 Series (with DieselMax/EcoMax engines)
JCB Other: FASTRAC, TELETRUK, Site Dumpers (6T, 7T, 9T), Vibromax, Generators (G*R, G*RX, G*Q)
JCB Engines: 320/40001 to 320/49999 (DieselMax), 320/50001 to 320/55000 (EcoMax)

The list above is for reference. This seal fits most JCB machines produced after 2005 with a JCB DieselMax or EcoMax engine.

Related Parts and Hardware

The 320/03119 seal is fitted in the timing cover. When replacing it, it is recommended to also replace the timing cover gasket (if the cover is removed) and the multi-groove belt (e.g., 320/08598 or 320/08608).

⚠️ Safety Warning

A leaking front crankshaft seal leads to an engine oil leak. This oil can saturate the drive belt, causing it to slip off or break. A broken belt causes an immediate loss of cooling (water pump failure) and charging, which can lead to engine seizure. Leaking oil also creates a fire hazard.

Part Role in the Machine and Failure Diagnostics

The 320/03119 seal is a dynamic lip seal fitted in the engine's front timing cover. Its garter-spring-loaded lip runs directly on the crankshaft snout, where the main pulley is mounted. It prevents engine oil from leaking out and protects the engine's internals from dust and dirt.

  • › Oil leak from the front of the engine, behind the main crankshaft pulley.
  • › Oily drive belt and tensioner pulleys.
  • › Build-up of oily grime on the bottom of the timing cover.
  • › Damaged or hardened sealing lip (visible upon removal).

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🔧 Expert Guide: Key Installation Tips

  1. Remove Pulley: Replacement requires removing the drive belt, then unbolting the main crankshaft pulley.
  2. Careful Removal: When removing the old seal, be careful not to scratch the housing bore or the crankshaft surface.
  3. Inspect Crankshaft: Clean and inspect the crankshaft snout. If it has a deep groove worn into it by the old seal, the new seal may need to be installed slightly deeper or shallower.
  4. Lubricate Lip: Before installation, lubricate the inner lip of the new seal with clean engine oil.
  5. Press in Evenly: Use a proper seal driver or a socket of the correct diameter to tap the new seal in evenly and squarely to the correct depth. Do not hit it directly with a hammer.

Frequently Asked Questions (FAQ)

Does this seal fit a Perkins engine (e.g., in an older 3CX)?

No. This seal (320/03119) is exclusively for newer machines (post-2005) with JCB DieselMax, EcoMax, or Stage V engines. Older machines with Perkins engines require a different front crankshaft seal.

I have a leak at the front of the engine. Is it definitely this seal?

This is the most common cause of an oil leak in this location. Other possibilities include a leaking timing cover gasket or a leaking water pump (coolant leak).

Question mark

Do you have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you select the right part to get your equipment back to work as quickly as possible.

SKX989038A
320/03119
0.15 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
BACKHOE LOADER
EXCAVATOR
GENERATOR
ROBOT
TELESCOPIC HANDLER
TELETRUK
VIBROMAX
WHEELED LOADER
OEM NUMBERS
320/03119
ENGINE
JCB DIESELMAX
JCB ECOMAX
JCB STAGE V
OUTER DIAMETER (MM)
110
INNER DIAMETER (MM)
85
HEIGHT (MM)
15

Specific References

MPN
320/03119
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Front crankshaft oil seal suitable for JCB 3CX 4CX

Catalog number: SKX989038A
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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

44.90 zł

net price
36,50 zł
Available in large quantity Temporarily unavailable
36,50 zł
net price

44.90 zł

gross price
Nie możesz dodać więcej produktów
  • You will receive 4 points, it gives you 1.60 zł
  • Lowest price from 30 days before the discount: 44.90 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    BACKHOE LOADER
    EXCAVATOR
    GENERATOR
    ROBOT
    TELESCOPIC HANDLER
    TELETRUK
    VIBROMAX
    WHEELED LOADER
    Show more
    OEM NUMBERS
    320/03119
    ENGINE
    JCB DIESELMAX
    JCB ECOMAX
    JCB STAGE V
    OUTER DIAMETER (MM)
    110
    INNER DIAMETER (MM)
    85
    HEIGHT (MM)
    15

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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

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