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12403708 Crankcase Breather Filter | High-Efficiency Oil-Gas Separator for Liebherr & Krone
Maintain Peak Fuel Efficiency: The 12403708 (also 11356734) breather element is engineered for the massive air-flow demands of high-horsepower engines like the **Liebherr D9512** and **Krone BiG X** series. Utilizing advanced multi-layer coalescing fiber, it intercepts micron-sized oil droplets to prevent sludge buildup in turbochargers and intake manifolds, ensuring your heavy-duty fleet meets strict emission standards while reducing unplanned downtime.
Core Advantages: Engineered for High-Horsepower Reliability
🌀 Multi-Layer Coalescing Technology
Advanced composite fibers provide superior condensation of oil mist, ensuring that only clean air reaches the intake system, protecting expensive turbocharger vanes.
🔥 High-Pulse Pressure Resistance
Specifically reinforced to handle the high-temperature pulse pressures typical of V12 engines (D9512), preventing structural failure during peak load operation.
⚙️ Eco-Friendly Aftertreatment Protection
By significantly reducing oil blow-by, this element prevents premature clogging of DPF and SCR systems, extending the service life of emission components.
Technical Specifications: Precision Data
| Specifications | Details |
|---|---|
| Part Number | 12403708 / 11356734 |
| Product Type | Crankcase Ventilation Element (CCV) |
| Media Material | High-Precision Coalescing Composite Fiber |
| Seal Type | High-Temperature Resistant Synthetic O-ring |
| Dimensions | Strictly 1:1 OEM Standard Compliance |
Global Cross-Reference: The Best Equivalent
The 12403708 is the premium aftermarket alternative for the following industry brands:
Wide-Ranging Fleet Applications
🌾 Agriculture: John Deere 9700/9800/9900 Harvesters; Krone BiG X 680 to 1180 series.
🏗️ Liebherr Machinery: R966, R970 SME, R976, R980 Excavators (IIIA to IV/4F standards).
🏗️ Mobile Cranes: LTM1300-6.2, LTM1500-8.1 High-capacity cranes.
⚙️ Engine Power: Liebherr D9512, D9512A7 Diesel Power Systems.
🚜 Special Equipment: LRB355 Crawler Drill Rigs.
Engineered for High-Load Environments
Optimized for Heavy-Duty Industrial Cycles. This filter maintains its coalescing efficiency in high-heat engine compartments and under extreme vibration, preventing oil blow-by that leads to engine bay fouling and turbocharger damage.
Maintenance Guide
- Fitment: Ensure the filter is oriented correctly within the housing to allow proper drainage of coalesced oil back to the crankcase.
- Seal Integrity: Inspect the O-ring for proper seating to prevent external leaks.
- Intervals: For heavy-duty harvesters and cranes, follow the 500-hour service interval or monitor crankcase pressure sensors.
Smart Q&A: People Also Ask
Q1: Why is the 12403708 filter critical for Krone BiG X harvesters?
A: High-power forage harvesters generate significant crankcase pressure. This filter ensures oil mist doesn't foul the intake air, keeping fuel consumption low during intense harvesting seasons.
Q2: Can I use HiFi SAO 5471 as a direct replacement?
A: Yes, our 12403708 meets the exact technical benchmarks of SAO 5471 and MANN LC 9002 X, offering the same 1:1 OEM fitment.
Q3: How does this filter protect the turbocharger?
A: It captures oil mist before it enters the air intake. Without it, oil would coat the turbocharger compressor wheel, leading to imbalance, carbon deposits, and eventual failure.
Q4: Is it suitable for Liebherr Stage IV/Tier 4F engines?
A: Yes, it is designed to work with the latest aftertreatment systems (DPF/SCR) by keeping oil out of the exhaust stream.
Q5: What is the lifespan of this breather element?
A: While durable, it is recommended to replace it during major engine services to prevent pressure build-up that can cause crankshaft seal leaks.
Lower Your Engine Maintenance TCO Today
Direct factory supply for Liebherr 12403708 / 11356734 with global distribution. Secure premium protection for your Krone or John Deere harvester fleet.
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