Product Overview

This genuine high-quality oil seal, part number 0353318, is engineered for the precise demands of Hitachi excavator motor plunger assemblies. As a leading supplier in the global heavy machinery aftermarket, we provide reliable parts with direct shipping to major industrial hubs across North America, Europe, the Asia-Pacific region, and the Middle East, ensuring your operations stay on schedule.

Key Features & Benefits

• Premium Material Construction: Manufactured from high-grade nitrile rubber (NBR) or equivalent, offering excellent resistance to engine oils, hydraulic fluids, and temperature fluctuations.
• Precision Engineering: Designed to exact OEM specifications to ensure a perfect fit and reliable seal, preventing fluid leaks and protecting critical plunger components from contamination.
• Enhanced Durability: Built to withstand the high-pressure, high-vibration environment of excavator hydraulic systems, extending service intervals and reducing downtime.
• Optimal Performance: Maintains consistent hydraulic pressure by preventing internal leakage, ensuring efficient motor operation and fuel economy.

Technical Specifications

OEM Cross-Reference

This part is a direct replacement for the following OEM numbers:

• Hitachi: 0353318
• Alternate/Cross: AP2668G

Compatibility

This oil seal is compatible with the motor plunger assemblies in the following Hitachi excavator models:

• Hitachi EX400
• Hitachi EX400-3
• Hitachi ZX330-3
• Hitachi ZX330-5G

Note: Always verify the specific part number from your machine’s service manual or existing seal before ordering to ensure correct fitment.

Global Supply & Distribution

We specialize in international B2B logistics for automotive and heavy equipment parts. Our network ensures efficient delivery to key markets:

• Worldwide Shipping: Reliable air and sea freight to all major ports and industrial centers.
• Major Markets Served: Direct supply lines to the USA, Canada, Germany, UAE, Australia, Japan, and Southeast Asia.
• Fast Delivery: Consolidated shipments and established freight partnerships enable timely delivery to keep your inventory stocked.
• Export Compliance: All documentation, including commercial invoices and certificates of origin, is prepared to meet international customs requirements.

Quality Assurance

• OEM Standard: Manufactured to meet or exceed original equipment dimensions and performance criteria.
• Rigorous Testing: Each batch undergoes quality checks for dimensional accuracy, material integrity, and sealing performance.
• Reliability: Supplied by trusted manufacturers with proven expertise in sealing solutions for heavy machinery.

FAQ

Q1: How do I confirm this seal fits my specific Hitachi EX400-3 model?
A1: The primary identifier is the part number. We recommend matching the part number 0353318 or the OEM number AP2668G from your machine’s official parts catalog or the original seal removed during disassembly. The model compatibility list is a reliable guide for standard configurations.

Q2: What is the typical service life of this oil seal under normal operating conditions?
A2> While service life varies based on operating hours, maintenance schedules, and working environment, this high-quality seal is designed for durability. With proper installation and clean hydraulic fluid, it should last through standard service intervals as specified in the equipment’s maintenance manual.

Q3: Do you provide technical support for installation?
A3> For B2B clients, we can provide general technical specifications and installation guidelines. Proper installation is critical and typically requires specific tools and knowledge. We recommend installation be performed by a qualified technician following the official Hitachi service procedures to prevent damage to the seal or the plunger bore.

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 .