Product Details
Product Overview
This high-performance diesel injection pump plunger, OEM number 7W5929, is a precision-engineered replacement component specifically designed for Caterpillar 3304 and 3306 diesel engines. Manufactured in Shandong, China, this plunger element is built to meet or exceed original equipment specifications, ensuring reliable fuel delivery and optimal engine performance. We provide global shipping to major industrial markets including North America, Europe, the Middle East, and Asia-Pacific, with fast delivery times of 3-7 days.
Key Features & Benefits
- Superior Material: Constructed from high-speed steel for exceptional wear resistance and long service life under high-pressure conditions.
- Precision Engineering: Manufactured to standard size with tight tolerances for a perfect fit and consistent fuel metering.
- 100% Professional Tested: Each plunger undergoes rigorous quality control to ensure flawless operation and reliability.
- Direct Replacement: Designed as a direct OE replacement for part number 7W5929, simplifying installation and reducing downtime.
- High Performance: Optimized for durability and efficiency in Caterpillar 3304 and 3306 engines, improving fuel economy and power output.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 7W5929 / 7w5929 |
| Type | Pump Plunger (Plunger Element) |
| Condition | New |
| Purpose | Replacement / Repair |
| Size | Standard Size |
| Material | High Speed Steel |
| Quality | 100% Professional Tested |
| Warranty | 6 Months |
| MOQ | 6 Pcs |
| Delivery Time | 3-7 Days |
| Package Size (per batch) | 25 x 25 x 25 cm |
| Gross Weight (per batch) | 1.000 kg |
OEM Cross-Reference
This plunger element is a direct cross-reference for the following OEM part numbers:
- 7W5929 (Primary OEM Number)
- 7w5929 (Alternative Format)
Note: While the primary cross-reference is 7W5929, this component is engineered to meet the same specifications as the original Caterpillar part for 3304 and 3306 engines.
Compatibility
- Engine Models: Caterpillar 3304, Caterpillar 3306
- Application: Diesel injection pump system for industrial, agricultural, and heavy equipment
- Vehicle Fitment: Designed for diesel engines (off-road and industrial applications)
Global Supply & Distribution
We offer worldwide shipping with fast delivery to major ports and industrial centers. Our distribution network ensures reliable supply to:
- North America: USA, Canada, Mexico
- Europe: Germany, UK, France, Netherlands, Poland
- Asia-Pacific: Australia, Japan, South Korea, Singapore
- Middle East & Africa: UAE, Saudi Arabia, South Africa
- South America: Brazil, Argentina, Chile
With a standard delivery time of 3-7 days and export experience in international trade, we ensure your orders arrive promptly and in compliance with global shipping standards.
Quality Assurance
- Manufacturing Standards: Produced in ISO-compliant facilities in Shandong, China
- Testing: Every plunger is 100% professionally tested for dimensional accuracy, surface finish, and pressure resistance
- Warranty: Backed by a 6-month warranty against manufacturing defects
- Material Integrity: High-speed steel construction ensures resistance to wear, corrosion, and thermal stress
FAQ
Q1: Is this plunger element a direct replacement for the original Caterpillar part 7W5929?
Yes, this plunger element is a direct OE replacement for the Caterpillar part number 7W5929. It is manufactured to standard size specifications and is designed to fit seamlessly into the injection pump of Caterpillar 3304 and 3306 engines. No modifications are required for installation.
Q2: What is the recommended installation procedure for this pump plunger?
Installation should be performed by a qualified diesel technician. Ensure the injection pump is clean and free of debris before fitting the new plunger. Lubricate the plunger with clean diesel fuel or assembly oil during installation. Always follow the engine manufacturer’s service manual for torque specifications and timing adjustments after replacement.
Q3: How can I maximize the service life of this plunger element?
To maximize lifespan, use clean, high-quality diesel fuel with proper filtration. Regularly inspect and replace fuel filters as per the engine maintenance schedule. Avoid running the engine on contaminated fuel, as this can cause premature wear. The high-speed steel construction provides excellent durability, but proper fuel system maintenance is essential for optimal performance.
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 .
FAQ
Common Product Inquiry Questions
How can I confirm this part matches my engine or injector model?
Send the OEM number, engine model, application, or clear product photos. We will help verify the suitable part before quotation.
Can I ask for packing, shipping, and delivery details together?
Yes. You can combine product confirmation, quantity, destination, packing request, and shipment method in one inquiry so the quotation is more complete.
Why is price not displayed on the page?
This catalog is built for B2B inquiry. Final pricing depends on the confirmed part number, quantity, stock situation, and shipping destination.
What information helps you quote faster?
Please include the OEM number, engine model, quantity, destination country, and any packing or shipping preference. This usually speeds up matching and quotation.
Inquiry Desk
Send Product Inquiry
Use this form to ask for fitment, MOQ, delivery time, packing, and shipping support for this product.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
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Quick Inquiry
Caterpillar 3304 3306 Diesel Injection Pump Plunger 7W5929 | High Speed Steel | Standard Size
Send one clear inquiry and we will reply with quotation, lead time, and fitment confirmation.
- OEM number is included automatically when available.
- Add quantity, destination, and packing needs for a faster quote.
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Inquiry Desk
Send Inquiry
Quick contact for this product. OEM number is attached automatically.
- Simple inquiry flow with direct sales follow-up.
- Send OEM number, quantity, or destination in the optional message if available.
- Every submission is stored in WordPress and sent to your admin email.