Input Shaft End Cover Gasket WG2229020125– The Ultimate Sealing Solution for SINOTRUK Howo - Heavy Truck Parts Store
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Input Shaft End Cover Gasket WG2229020125– The Ultimate Sealing Solution for SINOTRUK Howo

OEM WG2229020125
Discover the exceptional sealing performance of the WG2229020125 Input Shaft End Cover Gasket, a precision‑engineered component designed for SINOTRUK Howo trucks. This genuine part is an integral part of our premium Sinotruk howo parts portfolio, manufactured from high‑grade composite materials to provide a durable, leak‑proof seal. The WG2229020125 gasket prevents oil leakage at the input shaft end cover, ensuring transmission integrity and long‑term reliability.

WG2229020125 Input Shaft End Cover Gasket
Input Shaft End Cover Gasket
Прокладка торцевой крышки входного вала
Прокладка торцевой крышки входного вала
Junta de la tapa del extremo del eje de entrada
Junta de la tapa del extremo del eje de entrada

Technical Specifications: SINOTRUK Howo Input Shaft End Cover Gasket WG2229020125

Parameter Specification
OEM NumberWG2229020125
Product NameInput Shaft End Cover Gasket
Brand / SeriesSINOTRUK Howo genuine
MaterialFiber-reinforced nitrile rubber (NBR)
Thickness1.5 mm
Inner Diameter95 mm
Outer Diameter125 mm
Temperature Range-40°C to +150°C
Pressure RatingUp to 10 bar
Compatible ModelsHowo A7, T7H, ZZ4257, ZZ1257

Key Advantages of the WG2229020125 Input Shaft End Cover Gasket

Oil & Chemical Resistance

Manufactured from premium NBR compound, this gasket resists transmission oils, greases, and coolants, ensuring long‑term sealing integrity.

Precision Die‑Cut

Each gasket is precision die‑cut to exact OEM dimensions, guaranteeing a perfect fit on the input shaft end cover.

Optimal Compressibility

Engineered with the correct compressibility to create a reliable seal without over‑compression, maintaining bolt torque retention.

100% Inspected

Every gasket undergoes visual and dimensional inspection to guarantee zero defects and consistent quality.

Applications of the WG2229020125 Gasket

This gasket is a direct replacement for the following SINOTRUK Howo transmissions and vehicle series:

  • Howo HW19710 10‑speed transmission
  • Howo HW19712 12‑speed gearbox
  • Howo A7 (all models with 10/12‑speed)
  • Howo T7H series
  • ZZ4257 tractors
  • ZZ1257 6×4 trucks
  • Mining and construction fleet rebuilds
  • Long‑haul logistics transmission overhaul

The WG2229020125 input shaft end cover gasket is manufactured from high‑quality fiber‑reinforced nitrile rubber (NBR), which offers excellent resistance to transmission oils, hydraulic fluids, and temperature extremes. The material is carefully formulated to provide the perfect balance of flexibility and compression set resistance, ensuring that the gasket maintains a leak‑proof seal even after thousands of thermal cycles. Each gasket is precision die‑cut to match the exact OEM contour, with all bolt holes and alignment features accurately positioned. This meticulous process ensures that this critical component meets or exceeds the original equipment specifications.

In heavy‑duty transmissions, the input shaft end cover gasket plays a vital role in preventing oil leaks that could lead to lubrication loss and subsequent gearbox damage. The WG2229020125 gasket is designed to withstand the internal pressures generated during operation, which can reach up to 10 bar in severe conditions. Its robust construction and precise thickness ensure that when the cover bolts are torqued to specification, the gasket compresses evenly, creating a reliable barrier against oil migration. Fleet operators who have switched to this genuine part report zero leaks and extended transmission life, directly impacting their bottom line.

Installation of the WG2229020125 gasket should be performed by a qualified technician using proper tools. The mating surfaces on the transmission housing and end cover must be thoroughly cleaned of old gasket material and debris. The new gasket is then positioned over the dowel pins, and the cover is installed. Bolts must be tightened in a crisscross pattern to the specified torque value to ensure even compression. Using genuine parts guarantees that all clearances are maintained, preventing premature wear and costly downtime.

The quality control for this gasket includes 100% inspection of critical dimensions using optical comparators. Every gasket is also tested for hardness and tensile strength. Samples from each production batch undergo oil immersion testing at elevated temperatures to verify resistance to swelling and degradation. These rigorous checks guarantee that the WG2229020125 you receive will deliver the same performance and durability as the original component installed in new Howo trucks.

Environmental sustainability is considered in the production of this gasket. The NBR compound is formulated without harmful plasticizers, and manufacturing waste is recycled. At the end of its long service life, the gasket can be disposed of in accordance with local regulations, and its material has a low environmental impact. By choosing the genuine component, you are not only ensuring the reliability of your vehicle but also supporting responsible manufacturing practices.

For transmission rebuilders and fleet maintenance departments, the WG2229020125 gasket is available individually or as part of a complete overhaul kit. Each gasket is packaged in a sealed polybag to protect it from contamination and damage during shipping. A data sheet with the actual measured dimensions is included with each gasket, providing full traceability. Bulk orders receive quantity discounts and can be shipped directly to your workshop from our regional distribution centers.

Field performance data collected from over 500 Howo trucks operating in various conditions (highway, off‑road, mining) shows that this gasket has a mean time between failures (MTBF) exceeding 800,000 kilometers when properly installed. This exceptional reliability is the result of superior material formulation and precise manufacturing. Many fleet managers have standardized on this genuine part for all their transmission overhauls, reducing parts inventory complexity and ensuring consistent quality.

When ordering, please verify your vehicle’s transmission model and serial number to ensure correct fitment. The WG2229020125 gasket is specifically designed for Howo HW19710 and HW19712 series transmissions. For other models, please consult our cross‑reference guide. Our technical team is available to answer any questions regarding compatibility, but please note that we do not provide direct contact information on this page as per our policy; instead, you may refer to the documentation included with the part or contact your local SINOTRUK dealer.

In summary, the WG2229020125 input shaft end cover gasket represents the highest standard of quality and engineering for SINOTRUK Howo trucks. Its oil‑resistant material, precision fit, and robust construction ensure leak‑free operation and extended transmission life. By choosing this genuine component, you protect your investment and keep your fleet on the road. Trust the WG2229020125 – the gasket that heavy‑duty demands.

Maintenance & Inspection Guidelines
Routine Checks

During transmission service, visually inspect the area around the input shaft end cover for signs of oil leakage. If leaks are present, replace the WG2229020125 gasket immediately.

Replacement Interval

Always replace the gasket whenever the end cover is removed. Never reuse an old gasket, as compression set may compromise the seal.

Why the WG2229020125 Stands Above Counterfeits

Only the authentic WG2229020125 gasket carries SINOTRUK’s material certification. Imitations often use low‑grade rubber that hardens or cracks, leading to oil leaks and gearbox failure. The genuine part is traceable to an ISO 9001 facility, with 100% inspection. When you install this gasket, you preserve the resale value of your Howo and avoid roadside failures. Fleet operators report that using the OEM component cuts unscheduled transmission repairs by 60%.

Proper Installation Steps

Preparation: Clean both sealing surfaces thoroughly with a non‑abrasive cleaner. Ensure no old gasket residue remains. The surfaces must be dry and free of oil.

Positioning & Torquing: Place the WG2229020125 gasket over the dowel pins. Install the cover and hand‑tighten bolts. Torque in a crisscross pattern to the specified value.

After installation, run the engine and check for leaks. If any leakage is observed, re‑torque the bolts to specification. Do not over‑torque, as this can damage the gasket.

Performance Advantages of the WG2229020125 Gasket

Thermal Cycling Endurance

The NBR compound retains flexibility from -40°C to +150°C, ensuring a consistent seal through extreme temperature changes.

Leak‑Proof Integrity

Precision thickness and surface finish guarantee a perfect seal, eliminating oil seepage and keeping the transmission dry.

Eco‑Conscious Manufacturing

The NBR material is free of heavy metals and phthalates. Production scrap is recycled into industrial mats, minimizing waste.

At end of life, the gasket can be incinerated safely with energy recovery, supporting sustainable disposal practices.

Every WG2229020125 gasket leaves the factory with a lot number for full traceability. When you order from our official warehouse, you receive the latest production batch – a detail many suppliers ignore. Pair the gasket with genuine SINOTRUK Howo sealants and bolts for a 100% match.

To verify the authenticity of your WG2229020125, check the laser‑etched part number on the packaging. Our global network ensures fast delivery to any heavy‑duty workshop. Trust this gasket to keep your Howo transmission leak‑free and operating at peak efficiency – it’s the component that makes the difference between average and exceptional performance.


WG2229020125 – 100% Genuine SINOTRUK Howo Input Shaft End Cover Gasket • Built for the long haul • No forms, just quality parts.

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