Product Details

Product Overview

This high-quality replacement piston is specifically engineered for Caterpillar C9 diesel engines, offering a direct OEM alternative for part numbers 3851657, 385-1657, 3247380, and 324-7380. Designed for heavy-duty performance, this piston ensures reliable power output and extended engine life. We serve a global network of B2B clients, with major markets in North America, Europe, the Middle East, Southeast Asia, and Australia.

Key Features & Benefits

• OEM Specification: Manufactured to meet or exceed original Caterpillar standards for fit, form, and function.
• Superior Durability: Constructed from high-strength aluminum alloy to withstand extreme combustion pressures and temperatures.
• Precision Engineering: Features advanced ring groove machining and pin bore finishing for optimal oil control and reduced friction.
• Enhanced Performance: Designed to improve combustion efficiency, leading to better fuel economy and reduced emissions.
• Rigorous Testing: Each piston undergoes dimensional, material hardness, and thermal stability checks before shipment.

Technical Specifications

OEM Cross-Reference

This product is a direct replacement for the following genuine Caterpillar part numbers:

• 3851657
• 385-1657
• 3247380
• 324-7380

All cross-referenced numbers are verified for direct interchangeability. No modifications required for installation.

Compatibility

• Engine Models: Caterpillar C9 (All variants including C9 ACERT)
• Vehicle Applications: Caterpillar 320D, 323D, 325D, 330D Excavators; Caterpillar D6K, D6N Dozers; Caterpillar 725, 730 Articulated Trucks; Caterpillar CB-534D, CB-564D Compactors
• Year Ranges: 2005-2015 (Verify specific engine serial number for exact compatibility)

Global Supply & Distribution

We offer reliable worldwide shipping with fast delivery to major industrial centers and ports, including Los Angeles, Rotterdam, Dubai, Singapore, and Shanghai. Our logistics network ensures efficient customs clearance and door-to-door service for B2B clients. We regularly export to markets in North America, South America, Europe, the Middle East, Africa, and Asia-Pacific.

Quality Assurance

• Certifications: ISO 9001:2015 certified manufacturing facility.
• Warranty: 12-month warranty against manufacturing defects.
• Testing: 100% dimensional inspection, material composition analysis, and pressure testing prior to packaging.
• Packaging: Individually wrapped and boxed to prevent damage during transit.

FAQ

Q1: Is this piston a direct fit for my Caterpillar C9 engine?
A: Yes, this piston is manufactured to OEM specifications for the Caterpillar C9 engine. It directly replaces part numbers 3851657, 385-1657, 3247380, and 324-7380. Always verify your engine’s serial number to ensure compatibility, especially for early or late-model variants.

Q2: Does the piston come with rings and a pin?
A: Yes, this is a complete piston assembly that includes the piston body, piston rings (compression and oil control), and the wrist pin. It is ready for installation after proper lubrication.

Q3: What is the recommended installation procedure for this piston?
A: We recommend following the official Caterpillar service manual for C9 engines. Key steps include: (1) Ensure the cylinder bore is clean and within specification, (2) Lubricate the piston rings and cylinder wall with clean engine oil, (3) Use a proper ring compressor to install the piston, (4) Torque the connecting rod bolts to the manufacturer’s specification. If you are unsure, consult a certified diesel mechanic.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .