Part Name: Piston body 9N5250
Part Number: 9N5250
Basic Info.
| parts no. | 9N5250 | Material | steel |
| Type | Piston body | Parts Type | Engineering machinery parts |
| Compatibility | Caterpillar | Transport Package | Wooden box |
| Trademark | DIRON | Origin | Luoyang City |
| HS Code | 84099991 | Production Capacity | 5000PCS/Year |
Product Details
- Date First Listed：2026/03/24
- Manufacturer：Diron Parts
Product Description
- Part Type：Piston body
- Description: Piston body 9N5250 Suitable for Caterpillar
The 9N-5250 is a precision-engineered aftermarket piston body designed for Caterpillar® 3306 and 3406 direct-injection diesel engines. This critical component forms the core of the piston assembly, working with rings and wrist pin to convert combustion force into mechanical power while maintaining proper compression and oil control.
Key Features & Benefits
- Precision-machined crown and skirt for optimal ring seating and cylinder clearance
- Balanced weight and profile to minimize vibration and ensure smooth engine operation
- Designed to maintain proper compression and thermal expansion under high-load conditions
- Compatible with standard 3-ring piston ring sets
- 100 % inspected for dimensional accuracy, weight balance, and surface finish
- Proven performance in high-hour engine rebuilds
Common Applications (Caterpillar® Compatibility)
- Engines: – 3306 (PC & DI) – 3406 (early mechanical DI)
- Typical Machines: – Track-Type Tractors: D6D, D7G, D8K – Wheel Loaders: 966C, 966D, 980C – Excavators: 225, 235 – Generator sets, marine propulsion, and industrial power units
Technical Specifications
- Part Number Reference: 9N-5250
- Type: Diesel piston body (long skirt design)
- Bore Diameter: 120.65 mm (4.750 in)
- Compression Height: Factory-matched
- Ring Grooves: Configured for standard 3-ring pack
- Weight: ≈ 1.8–2.2 kg (per piston body)
Important Note:
- We only provide replacement products intended for aftermarket use in the Caterpillar machinery listed above. The brand name Caterpillar is used solely as reference information to indicate compatibility and does not imply that our products are OEM.
- Note: While this description provides general information, 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.
FA
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.
