Gasket for the solenoid valve adapter suitable for the JCB gearbox
GX-AFTER

Gasket for the solenoid valve adapter suitable for the JCB gearbox

Catalog number:SKX1020875A Nr OEM:813/M1221 Manufacturer:GX-AFTER
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Transmission Valve Block Gasket suitable for JCB - 813/M1221

Technical Specification and Compatibility

An essential sealing component, the 813/M1221 transmission valve block gasket, in GX-AFTER quality. This is a precision-cut gasket designed to be mounted under the solenoid adapter block on the transmission of JCB machines, including 3CX/4CX backhoe loaders, telehandlers, and wheel loaders. Its purpose is to ensure a perfect seal between the valve block and the transmission housing, preventing oil leaks and loss of control pressure.

Part Number: 813/M1221
Alternative Numbers: 813/50055 / 813/50051
Type: Transmission Valve Block / Solenoid Adapter Gasket

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 813/M1221 Gasket

Perfect Seal: Prevents costly transmission oil leaks and loss of hydraulic control pressure.
Oil and Pressure Resistant: Made from high-quality material resistant to hot transmission oil and high pressure.
Precision Manufacturing: Perfectly mirrored shape and hole pattern guarantee a trouble-free installation and fit.
Essential for Repairs: Must be replaced every time the transmission solenoid block is removed (e.g., for coil replacement).

Application in machinery

Brand Type / Series / Model
JCB Backhoe Loaders: 3CX, 4CX
JCB Wheel Loaders
JCB Telehandlers

The list above is for reference. It is crucial to verify the part number 813/M1221 in your machine's transmission parts diagram.

Related Parts and Hardware

This gasket is installed with the valve block (adapter) and the solenoid valves (coils) that control the transmission. We also recommend replacing the transmission filter and checking the oil (we recommend HYPTRON oils) during service.

⚠️ Safety Warning

A failed 813/M1221 gasket leads to transmission oil leaks, creating a slip hazard. More importantly, a leak can cause a loss of control pressure, leading to shifting problems, clutch slippage, or a complete loss of drive, which can be dangerous when operating on a slope.

Part Role in the Machine and Failure Diagnostics

The 813/M1221 gasket is a precisely shaped seal fitted between the transmission housing and the aluminum valve block (adapter) that holds the gear and reverser solenoids. Its job is to seal the high-pressure oil channels that pass between the transmission and the valve block.

  • › Transmission oil leak from between the gearbox and the solenoid block.
  • › Dirt and grime buildup around the cover.
  • › Problems with shifting or drive engagement (due to an internal pressure leak).
  • › Gasket is hardened, brittle, flattened, or cracked (visible upon removal).

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🔧 Expert Guide: Key Installation Tips

  1. Absolute Cleanliness: Before installation, the surfaces of the transmission housing and the valve block must be perfectly clean, dry, and degreased.
  2. Replace Every Time: This gasket is a one-time-use item. It must be replaced with a new one every time the valve block is unbolted.
  3. No Silicone: Never use silicone or any liquid sealant with this gasket. It can clog the sensitive control channels in the transmission.
  4. Correct Alignment: Ensure the gasket is perfectly aligned with all 10 bolt holes and the oil passages.
  5. Cross-Tighten: Tighten the valve block bolts gradually and in a cross-pattern to ensure even compression of the gasket.

Frequently Asked Questions (FAQ)

Where exactly is this gasket located?

It is located on the top or side of the transmission housing, directly underneath the aluminum block that the gear and reverser solenoids screw into.

My machine jerks when changing direction. Could this gasket be the cause?

It's possible. A damaged gasket can cause an internal leak of control pressure between circuits, leading to delayed or harsh clutch engagement. However, the solenoids or clutch plates themselves are a more likely cause.

Are 813/50055 and 813/50051 the same part?

Yes, these are older, superseded part numbers for the same gasket. Part number 813/M1221 is the newest, fully compatible version.

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.

SKX1020875A
813/M1221
0.02 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
BACKHOE LOADER
TELESCOPIC HANDLER
WHEELED LOADER
OEM NUMBERS
813/M1221 / 813/50055 / 813/50051

Specific References

MPN
813/M1221
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Gasket for the solenoid valve adapter suitable for the JCB gearbox

Catalog number: SKX1020875A
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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

42.37 zł

net price
34,45 zł
Available in large quantity Temporarily unavailable
34,45 zł
net price

42.37 zł

gross price
Nie możesz dodać więcej produktów
  • You will receive 3 points, it gives you 1.20 zł
  • Lowest price from 30 days before the discount: 42.37 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    BACKHOE LOADER
    TELESCOPIC HANDLER
    WHEELED LOADER
    OEM NUMBERS
    813/M1221 / 813/50055 / 813/50051

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    Gasket for the solenoid valve suitable for the JCB gearbox

    Available in large quantity Temporarily unavailable
    Price Gross price 13.53 zł
  • You will receive 1 points, it gives you 0.40 zł
  • Nie możesz dodać więcej produktów

    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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