Growshine International is your trusted partner for heavy machinery parts since 2008. Based in Guangzhou, we specialize in the export of construction machinery components, heavy duty truck parts, agricultural equipment spares, and automotive parts. Our portfolio includes genuine Volvo, Caterpillar, Komatsu, John Deere, and Mercedes parts. With a strong focus on engine overhaul kits, hydraulic cylinder seals, and transmission parts, we ensure original quality and global delivery. Whether you need Volvo 731GE cylinder repair bag or custom made seals, Growshine delivers excellence. Growshine International is also known as GESHI International in some markets.
This original authentic Swedish Volvo 731GE cylinder mattress repair bag gasket 20405900 cylinder pad is designed specifically for Volvo heavy duty engines used in excavators, wheel loaders, trucks, and industrial machinery. The repair kit contains all necessary seals, gaskets, O rings, and the special cylinder pad often called mattress bag to restore compression and prevent oil and coolant leakage. Manufactured to strict Volvo specifications, it guarantees a perfect fit for engine overhaul or hydraulic cylinder rebuilding.
| Part Number | 20405900 also referenced as 20405900 cylinder pad or 20405900 gasket |
| Engine Model | Volvo 731GE Volvo D7D D12 D13 series compatible |
| Kit Components | Cylinder liner gasket mattress bag valve stem seals O rings head gasket cylinder pad guide rings and full set of vulcanized seals |
| Material | High tensile steel reinforced elastomer plus FKM Viton for high temp zones asbestos free composite gasket |
| Application | Wet cylinder liner sealing combustion chamber sealing hydraulic cylinder piston seal |
| Operating Pressure | Up to 250 bar hydraulic and 180 bar engine compression |
| Temperature Range | Minus 35 degrees Celsius to plus 220 degrees Celsius |
| OEM Certification | Volvo original standard meets or exceeds OE requirements |
The mattress bag refers to the multi layer steel MLS cylinder liner seal that resembles a mattress structure. It sits between the cylinder liner and engine block providing a gas tight and water tight seal. Our kit includes this original Volvo 731GE mattress bag with part number 20405900.
Yes the 20405900 cylinder pad is commonly used in Volvo D12 D13 and 731GE engine platforms found in Volvo FH trucks EC excavators and L180 loaders. Always verify engine serial number Growshine provides fitment support.
Absolutely While designed for engine cylinder liners the seals and O rings high grade FKM NBR are also suitable for hydraulic cylinder repacking for example Volvo EC360 boom cylinder. The kit contains backup rings and wipers that match many aftermarket cylinder repairs.
Original Volvo 731GE gasket has specific surface coating and laser marking. Our Growshine original authentic products are sourced from Swedish production lines or authorized partners ensuring the same metallurgy and elasticity.
We supply cylinder repair kits for Caterpillar e.g. 3406 C15 Komatsu PC series John Deere Cummins and Deutz. Our core business includes construction machinery heavy duty truck agricultural machinery and automotive parts all with customization available.
Equipment: Volvo EC360B excavator engine overheats white smoke coolant loss
Diagnosis: Failed cylinder liner seal 20405900 allowing combustion gas into coolant passages
Solution using Growshine kit: Remove cylinder head and liner Clean block surface Install new Volvo 731GE mattress bag gasket 20405900 and cylinder pad Replace all O rings on liner base Torque to spec Result compression restored no coolant leak
For hydraulic cylinder drift issue use seals from the same kit for piston and rod replacement
Pro tip In case of minor bore damage oversized piston seals are available contact Growshine for custom oversized cylinder repair components
We support custom development of various spare parts related to cylinder repair hydraulic seals and gaskets. If you need non standard size special compound HNBR EPDM PTFE or want to customize cylinder pad for Volvo 731GE or other engine models our engineers can produce according to drawing sample or old part.
How to order custom
Send us your part number e.g. 20405900 or drawing We will confirm dimensions and produce sample within 15 to 25 days MOQ flexible
100 percent authentic Swedish Volvo 731GE parts
Specialized in construction machinery heavy duty truck agricultural machinery and automotive parts
Stock in Guangzhou fast global shipping
ISO 9001 quality management
Engineering support for custom seals
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For Volvo 731GE 20405900 or any other cylinder mattress bag gasket pad O ring wiper guide ring we offer full custom solutions. Whether you need a modified shape special rubber compound Viton HNBR silicone or a complete cylinder repair kit for non standard equipment Growshine International can develop according to your sample or drawing.
Construction Machinery Heavy Truck Agricultural Machinery Automotive Parts
We also custom develop piston seals bearing housings rotary shaft seals and full hydraulic cylinder repair bags for brands like Caterpillar Komatsu John Deere Mercedes etc. No order too small or too complex.
Growshine International your reliable partner for original and custom parts
All technical specifications are based on original Volvo engineering data and aftermarket proven benchmarks. Part numbers 731GE and 20405900 are for reference. Growshine ensures true to original quality. No illegal advertising content.
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