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CAT 345CL Hydraulic Bucket Cylinder | PN:359-4372 / 358-8482(3594372 / 3588482)| Premium Aftermarket Replacement
1. Basic Product Info
High-quality aftermarket bucket hydraulic cylinder, dual interchange OEM numbers 359-4372 & 358-8482, direct replacement for 345CL large crawler excavator. Used to control bucket curl/dump for heavy quarry mining, rock loading, bulk earthmoving & high-load construction work. Fully follows original CAT drawing specs with identical mounting lugs, pin spacing and oil port layout for plug-and-play installation without machining.
| Item |
Details |
| Product |
Bucket Hydraulic Cylinder |
| Fit Model |
CAT 345CL |
| OEM No. |
359-4372, 358-8482 / 3594372, 3588482 |
| Grade |
Brand New Premium Aftermarket |
| Warranty |
12 months against manufacturing defects |
| MOQ |
1pc available from stock |
| QC Standard |
ISO9001 full hydraulic inspection |
2. Core Technical Specification
| Spec |
Parameter |
| Bore Size |
160mm (6.3inch) |
| Rod Diameter |
100mm |
| Stroke Length |
1356mm (53.4inch) |
| Rated Working Pressure |
35MPa / 5080PSI |
| Factory Test Pressure |
52.5MPa (1.5×working pressure) |
| Barrel |
ST52 seamless alloy steel, precision inner honing |
| Piston Rod |
Medium carbon steel + 30μm hard chrome plating, HRC68~70 anti-wear & anti-bending |
| Seal Set |
Import composite PU+NBR seals, anti-aging, leak-proof |
| Working Temp |
-25℃ ~ +85℃ |
| Design Service Life |
≥8500 working hours under heavy rock condition |
| Structure |
Double lug with quenched copper wear bushings |
3. Product Advantages
- Dual OEM Cross Reference: Two original CAT part codes fully interchangeable with genuine spare parts for full serial number 345CL machines.
- Heavy-Duty Reinforced Structure: Thickened lug base & reinforced barrel adapt frequent stone impact in quarry, effectively avoid lug crack and piston rod bending.
- 100% Pre-shipment Hydraulic Test: Every finished cylinder completes full-pressure leak test & reciprocating cycle inspection before warehouse to eliminate inner/outer oil leakage.
- Cost Saving Solution: Same performance as original CAT cylinder while cutting 40%~50% procurement cost for repair shops & spare parts wholesalers.
- Flexible Shipment: In-stock items ship within 3 working days; air freight 3~7 days, sea shipment 32~40 days optional for bulk orders.
4. Supplier Brief
We specialize in CAT C/CL series excavator hydraulic cylinders over 13 years, full boom/arm/bucket cylinder range for 330CL,345CL,365CL models, products widely exported to Africa, Southeast Asia, Middle East construction spare parts market.
5. FAQ
Q1: Can this cylinder fit upgraded 345DL model?
A: Part No.358-8482 also compatible with CAT 345DL; confirm machine serial before order.
Q2: Do you supply matching repair seal kit separately?
A: Matching seal kit available for separate purchase with bundle discount; seal not pre-installed on cylinder by default.
Q3: Anti-rust package for long sea transit?
A: Inner anti-rust oil filling + whole rod anti-rust grease + waterproof PE wrap + export solid plywood case.
Q4: Discount for full set order (boom+arm+bucket cylinder)?
A: Combined full-set order gets tiered unit price & consolidated one-time freight to lower total cost.
Q5: Warranty process for leakage within valid period?
A: Provide clear leakage photos + machine serial number, we supply free replacement seal kit or remote technical guidance.
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