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YN11P00029S002 Secondary Air Filter Element for Kobelco & CASE Heavy Machinery
The YN11P00029S002 is a precision-engineered secondary (safety) air filter element designed to provide a final line of defense for high-performance diesel engines. Primarily used in Kobelco SK-series and CASE CX-series excavators, this element ensures that even if the primary filter is compromised or incorrectly seated, no abrasive dust enters the combustion chamber.
Failsafe Engine Protection: Acts as a critical backup to prevent catastrophic engine wear in extreme dust environments.
Precision Fitment: Engineered to match OEM specifications for Kobelco, CASE, and Hitachi equipment.
Durable Synthetic Media: High-strength blue media designed for optimal airflow and structural integrity under vacuum pressure.
B2B Customization: Supporting private labeling and custom material specifications for large-scale fleet suppliers.
The Role of a Secondary Safety Element
A secondary air filter is a safety device installed downstream of the primary filter. Its primary function is not to hold the bulk of the dust, but to protect the engine during primary filter service or in the event of a primary filter failure. Because it remains in place when the primary filter is removed for cleaning or replacement, it prevents ambient dust from falling directly into the intake manifold.
Why Choose Our YN11P00029S002 Replacement?
Non-Bypass Design: Our end caps are molded from high-density polyurethane to ensure a 100% airtight seal, eliminating the risk of "dirty air" bypassing the filtration media.
Vibration Resistance: Heavy machinery operates under constant oscillation. Our internal support structures prevent media oscillation, which can cause "dust dusting" through the filter pores.
Engine Longevity: By maintaining a filtration efficiency of over 99.9% (when combined with the primary), it significantly reduces the silica count in engine oil, extending the life of pistons and liners.
Technical Specifications
| Feature | Details |
| Model Number | YN11P00029S002 |
| Filter Type | Secondary / Safety Air Element |
| Outside Diameter (D) | 135.0 mm |
| Inside Diameter (A) | 127.0 mm |
| Overall Height (H) | 353.0 mm |
| Media Color | Industrial Blue |
| Seal Material | High-Grade Polyurethane (PU) |
Cross-Reference
- Kobelco YN11P00029S002
- Mann Filter CF 1414
- HiFi SA 16076
- DONALDSON P821963
- Baldwin RS3535
- Inline FA10642
- Fleetguard AF25412
- CASE
87683001,
KBH0922
- HITACHI
4286130,LHE
L4286130
,4286130
- SUMITOMO KBH0922
Applications and Compatibility
Kobelco: SK200-8, SK210-9, SK210LC-11, SK235SR, SK260LC-10.
CASE: CX210 (B, C, D, E series), CX240, CX250D, CX290.
Hitachi: ZAXIS ZX200-3, ZX210LC-7, ZX225US, ZX250LC-6.
New Holland: E215B, E235B, E265SR.
Construction & Earthmoving: Essential for excavators, loaders, and rollers working on road, railway, and urban infrastructure projects.
Mining & Quarrying: Provides the final protection barrier for engines operating in open-pit mines with extreme dust exposure.
Agriculture & Forestry: Protects heavy-duty machinery from sand, plant debris, and fine organic dust during continuous outdoor exposure.
Rental Fleet Management: Reduces maintenance overhead and prevents engine damage caused by improper primary filter servicing.
Quality
Every YN11P00029S002 filter is manufactured in facilities certified under ISO 9001:2015. Our quality control process includes:
ISO 5011 Testing: Validating airflow resistance and dust separation efficiency.
Vacuum Collapse Testing: Ensuring the inner core does not fail under high-intake suction.
Thermal Stability: Testing seal integrity across temperature ranges from -40°C to +100°C.
FAQ
Q1: Can I clean and reuse the YN11P00029S002 secondary filter?
A: No. Secondary (safety) elements should never be cleaned. They are designed with fine media that can be damaged by compressed air. If the secondary filter appears dirty, it indicates the primary filter has failed and the secondary must be replaced immediately.
Q2: How often should the secondary air filter be replaced?
A: As a general rule, the secondary filter should be replaced every three primary filter changes or at least once a year. If the primary filter is found to be damaged, replace the secondary filter immediately.
Q3: Does this filter fit both Kobelco and CASE machines?
A: Yes. Since Kobelco and CASE share many engine and chassis platforms (especially in the 20-30 ton excavator range), the YN11P00029S002 is the standard cross-reference for both brands.
Q4: What happens if I operate the machine without the secondary filter?
A: Operating without it removes your "safety net." If the primary filter develops a small tear or isn't seated perfectly, dust will enter the engine directly, leading to rapid piston ring wear and eventual engine failure.
Q5: Do you offer bulk discounts for fleet owners or distributors?
A: Yes. We offer tiered pricing for B2B wholesale orders. We also support customized packaging and branding for established distributors.
We specialize in supplying high-durability filtration solutions for international markets, including Southeast Asia, the Middle East, and South America.
MOQ: Flexible based on stock availability (Standard: 20 units).
Lead Time: 7-21 days depending on order volume.
Customization: Supports custom media colors, private labeling, and specific packaging requirements.
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