Basic Info.
| Part no. | 252-8439/344-2149 | Material | steel |
| Type | Cylinder Head Assy | Part Type | Engine Parts |
| Compatibility | Caterpillar C9 | Transport Package | Wooden box |
| Trademark | DIRON | Origin | Luoyang City |
| HS Code | 84099991 | Production Capacity | 5000PCS/Year |
Product Details
- Item Model：252-8439/344-2149
- Date First Listed：2025/06/20
- Manufacturer：Diron Parts
Product Description
- Part Number：252-8439/344-2149
- Part Type：Cylinder Head
- Description: Cylinder Head Assy 252-8439/344-2149 for Caterpillar C9
Product Introduction: Cylinder Head Assembly 252-8439 and 344-2149 for Caterpillar C9 Diesel Engine
Overview
The Cylinder Head Assemblies 252-8439 and 344-2149 are precision-engineered components designed for the Caterpillar C9 diesel engine, critical for sealing the combustion chamber, housing the valves, and facilitating efficient airflow and fuel combustion. These parts are essential for maintaining engine performance and reliability in heavy-duty applications, such as excavators, wheel loaders, motor graders, and generator sets. Available as new aftermarket, remanufactured, or genuine OEM parts, they provide robust solutions for engine maintenance.
Key Features
- Material: Constructed from high-grade cast iron, designed to withstand high temperatures, pressures, and mechanical stresses in C9 engines. Features precision-machined surfaces for optimal sealing, heat dissipation, and durability.
- Design: Engineered to OEM specifications for precise fitment and performance. Includes valve seats, guides, and ports optimized for efficient combustion and exhaust flow. Typically delivered as complete assemblies with pre-installed valves, springs, premium valve stem seals, retainers, injector cups, and cam bearings. Features advanced cooling passages to manage engine temperature effectively.
- Compatibility: Compatible with Caterpillar C9 and C9.3 diesel engines, used in:
- Excavators: 330D, 330D FM, 330D L, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 340D L, 340D2 L.
- Wheel Tractor-Scrapers: 627G, 637D, 637E, 637G.
- Motor Graders: 140M, 140M Series 2, 160M, 160M Series 2.
- Wheel Loaders: 973C, 973D.
- Track Feller Bunchers: 2290, 2390, 2391, 2491, 2590, 511, 521, 521B, 522, 522B, 532, 541, 541 Series 2, 551, 552, 552 Series 2.
- Tractors: 586C, D6R, D6R Series III, D6R2, D6T, D7R.
- Dozers and Compactors: 814F Series 2, 815F Series 2, 816F Series 2.
- Generator Sets: C9 GEN SET, XQP275, XQP300.
- Petroleum Packages: CX31-C9I, CX31-P600, TH31-C9I, TH31-C9P.
- Engines: C9, C9.3, with specific serial numbers (e.g., 4ZF, CAD, MFF, THX). Exact compatibility must be verified using the engine’s serial number via CAT SIS, as per Caterpillar’s policy.
- Cross-References:
- 252-8439: 10R2766, 2528437, 213-4361, 241-8392, 241-8393, 241-8394, 242-0672, 255-4961, 268-3303, 273-3033, 293-4669, 293-4670.
- 344-2149: 10R7279, 10R8636, 311-7229, 332-3619, 201-2178, 201-2179.
- Dimensions: Specific dimensions are not publicly detailed but conform to OEM standards for C9 engines. Typical loaded cylinder heads for C9 engines weigh approximately 300-350 lbs (136-159 kg), based on similar C9 cylinder heads (e.g., 311-7229).
- Quality Assurance: Manufactured or remanufactured in ISO 9001 or TS16949-certified facilities, meeting or exceeding OEM specifications. Subject to rigorous inspection, including pressure and vacuum testing.
Benefits
- Enhanced Durability: High-grade cast iron construction ensures resistance to thermal stress, ensuring long-lasting performance in demanding construction, mining environments.
- Reliable Performance: Optimizes combustion efficiency, airflow, and valve operation, maintaining the C9 engine’s power output (275-375 hp for C9, up to 440 hp for C9.3) and fuel economy, critical for heavy-duty applications.
- Cost-Effective: Offers high-quality aftermarket or OEM options, reducing maintenance costs compared to replacing entire engine assemblies.
- Ease of Installation: Engineered as direct-fit replacements, with complete assemblies including pre-installed components to simplify installation. Professional installation by ASE-certified technicians is recommended due to precise torque requirements.
Applications
The Cylinder Head Assemblies 252-8439 and 344-2149 are designed for Caterpillar C9 and C9.3 diesel engines, suited for:
- Excavators: 330D, 336D, 336D2, 340D, for excavation and material handling.
- Wheel Tractor-Scrapers: 627G, 637G, for earthmoving tasks.
- Motor Graders: 140M, 160M, for road construction and maintenance.
- Wheel Loaders: 973C, 973D, for material handling.
- Track Feller Bunchers: 521B, 541, 552, for forestry operations.
- Tractors and Dozers: D6R, D7R, 814F Series 2, for land clearing and grading.
- Generator Sets and Petroleum Packages: C9 GEN SET, CX31-C9I, for power generation and oil/gas applications.
- Industries: Construction, mining, quarrying, forestry, petroleum, and power generation, where C9/C9.3 engines are deployed for high-performance tasks.
Technical Specifications
- Part Number:
- 252-8439 (cross-referenced as 2528439, CA2528439, 10R2766, 2528437, etc.).
- 344-2149 (cross-referenced as 3442149, CA3442149, 10R7279, 10R8636, 311-7229, etc.).
- Unit of Measure: Each.
- Condition: New aftermarket, remanufactured, or genuine OEM.
- Weight: Approximately 300-350 lbs (136-159 kg), based on similar C9 cylinder heads.
NOTE: While this description provides general information about cylinder heads, specific details such as size, weight and exact material may vary by manufacturer and specific application. To obtain the most accurate and up-to-date information, it is recommended to consult a qualified parts supplier such as DIRON PARTS.
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance.
Q3. What is your terms of delivery?
A: FOB
Q4. How about your delivery time?
A: Generally, it will take 20 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q8. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from
ABOUT DIRON
- Factory OF DIRON
Diron Parts Group Have Its Own Factory Ensure That We Offer Better Price For Customers. Besides, Diron Corporate With Some Reliable Principal Manufacturers, So Diron Also Supply Customer Other Quality Spare Parts.
- Team OF DIRON
With 18 years of manufacturing and exporting experience, Diron has a team of knowledgeable engineers, inspectors and technical workers, sales staff, after-sales personnel.
- Products OF DIRON
As a distributor, we supply parts covers for :Complete engines, Long block, Short block, Engine spare parts, Electricla products, Hydraulic products, Transmission products, Undercarridge products.Among them, Cylinder head, Cylinder block, Spacer-plate, Bushing & Pin are our best-selling products.
