BELPARTS MACHINERY LIMITED
| Packaging Details | Wooden Case Packing |
| Shipment | DHL FEDEX TNT EMS UPS / Ses / Air |
| Part name | Hydraulic Boom Cylinder |
| Supply Ability | 100 PCS / Months |
| Part number | 358-8439 3588439 |
| Condition | New |
| Emission standards | Stage V |
| Warranty | 1 Year |
| Quality | Aftermarket High Quality |
| Certifiion | CE |
| Delivery Time | 3-7 Day |
| Appliion | Excavator |
| Model | 349EL |
| Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL |
| Place of Origin | China |
| Model Number | 349EL |
| Brand Name | Belparts |
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Product Specification
| Packaging Details | Wooden Case Packing | Shipment | DHL FEDEX TNT EMS UPS / Ses / Air |
| Part name | Hydraulic Boom Cylinder | Supply Ability | 100 PCS / Months |
| Part number | 358-8439 3588439 | Condition | New |
| Emission standards | Stage V | Warranty | 1 Year |
| Quality | Aftermarket High Quality | Certifiion | CE |
| Delivery Time | 3-7 Day | Appliion | Excavator |
| Model | 349EL | Payment Terms | L/C,D/A,D/P,T/T,TRADE ASSURANCE,WEST UNION,PAYPAL |
| Place of Origin | China | Model Number | 349EL |
| Brand Name | Belparts | ||
| High Light | 349EL hydraulic boom cylinder ，excavator spare parts cylinder ，aftermarket hydraulic cylinder assy | ||
High-quality aftermarket boom hydraulic cylinder, OEM part number 358-8439(3588439), direct interchange for 349EL /349E /349FL large 49-ton crawler excavator. Controls boom lifting/lowering for heavy mining, rock quarry, bulk earthmoving and high-load engineering construction. Fully manufactured per original drawing with identical mounting lug size, pin pitch and oil port layout for direct bolt-on installation without modifiion.
| Item | Details |
|---|---|
| Product Name | Boom Hydraulic Cylinder |
| Fit Model | 349EL,349E,349FL |
| OEM Code | 358-8439 / 3588439 |
| Quality Grade | Brand New Premium Aftermarket |
| Factory Warranty | 12 Months against manufacturing defect |
| MOQ | 1pc available from in-house stock |
| QC Certifie | ISO9001 full hydraulic pressure inspection |
| Spec Item | Parameter |
|---|---|
| Bore Diameter | 170mm |
| Piston Rod Diameter | 115mm |
| Stroke Length | 1524mm |
| Rated Working Pressure | 35MPa(5080PSI) |
| Factory Test Pressure | 52.5MPa (1.5×rated working pressure) |
| Barrel Tube | ST52 seamless alloy steel, precision inner honing processing |
| Piston Rod | Medium carbon steel + 28~32μm hard chrome plating, surface hardness HRC67~70 anti-abrasion & anti-bending |
| Complete Seal Kit | Import PU+NBR composite sealing parts, oil-proof, anti-aging & high temperature resistant |
| Working Temperature | -25℃ ~ +85℃ |
| Design Service Life | ≥8500 working hours under heavy rock loading |
| Structure | Double lug with quenched copper wear-resistant bushing |
We specialize in E/EL/F series excavator hydraulic cylinders over 13 years, complete boom/arm/bucket cylinder lineup for 345CL,349E/EL,349FL,374F models, products widely exported to Africa, Southeast Asia, Middle East construction spare parts market.
Q1: Does this boom cylinder fit 349D/349DL?
A: No, 349D series uses different OEM part number, cannot cross installation.
Q2: Can I purchase matching repair seal kit separately?
A: Matching exclusive seal kit for PN358-8439 is available for separate sale with bundle discount; seals are not pre-installed on cylinder by default.
Q3: Anti-rust package for long ocean shipment?
A: Inner cylinder filled with anti-rust hydraulic oil + piston rod coated anti-rust grease + waterproof PE wrapping + solid export plywood case packaging.
Q4: Discount for full set order(boom+arm+bucket cylinder)?
A: Full set combined purchase enjoys tiered unit discount & consolidated one-time freight to cut total logistics expense.
Q5: Warranty solution for oil leakage within valid period?
A: Provide clear leakage photos + excavator machine serial number, we offer free replacement seal kit or remote professional installation guidance accordingly.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2013
Total Annual:
$28000000-$41660000
Employee Number:
1200~1300
Ecer Certification：
Verified Supplier
Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha... Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...
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