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**Product Specifications:**
- **Model No.:** E312, E311, CAT312, CAT311
- **Style:** Spare Parts, Repair Kits
- **Application:** Excavator
- **E312:** Piston Pump Parts
- **E311:** Piston Pump Parts
- **CAT312:** Piston Pump Parts
- **CAT311:** Piston Pump Parts
- **Trademark:** PHP
- **Transport Package:** Carton, Wooden Case
- **Specification:** SGS, ISO9001
- **Origin:** Ningbo
- **HS Code:** 8413910000
**About PHP Hydraulics Co., Ltd.**
PHP Hydraulics is a professional manufacturer of high-quality replacement parts for Caterpillar excavators, including main pumps, swing motors, and travel motors. We provide spare parts, repair kits, and replacements for various models such as E70, E70B, E120, E312, E322, E200 (old and new), E225B, E240, E307, E308, E320, E330, E345, E416B, E426B, and E426C.
**Main Components in Repair Kits:**
| INDEX | DESCRIPTION | QTY (PCS/SET) |
|-------|------------------------|----------------|
| 1 | DRIVE SHAFT F | 1 |
| 1 | DRIVE SHAFT R | 1 |
| 2 | SUPPORT | 2 |
| 3 | SWASH PLATE | 2 |
| 4 | THRUST PLATE | 2 |
| 5 | PISTON SHOE | 18 |
| 6 | RETAINER PLATE | 2 |
| 7 | BALL GUIDE | 2 |
| 8 | RETAINER WASHER | 2 |
| 9 | BLOCK SPRING | 18 |
| 10 | CYLINDER BLOCK | 2 |
| 11 | VALVE PLATE L | 1 |
| 11 | VALVE PLATE R | 1 |
**Why Choose PHP?**
1. **Top Quality with Competitive Pricing:** We offer the best quality products at the most favorable prices.
2. **Skilled Workforce:** 80% of our employees are experienced technicians and mechanics. We believe that only excellent people can produce excellent products.
3. **Advanced Manufacturing Equipment:** PHP has full production lines equipped with advanced technology from raw materials to finished products.
4. **Wide Range of Products:** We have a comprehensive selection of hydraulic pump parts and components for various applications.
**Packaging & Delivery Details:**
- **Standard Packaging:** Export wooden cases for sea shipping; cartons for air or express delivery. Custom packaging options are available.
- **Delivery Time:** In stock items will be shipped within 2–3 days after payment. If out of stock, we typically prepare the product within 14–25 days, which is rare.
**Welcome to PHP!**
If you need any hydraulic pump or hydraulic pump parts, feel free to contact us anytime. Our team is always here to assist you. Whether you're looking for spare parts, repair kits, or complete replacements, we’re committed to providing reliable and cost-effective solutions for your equipment needs. Let us help you reduce maintenance costs and improve performance.