1W-4776 Prelubrication Pump is a heavy-duty engine pre-lube pump designed for Caterpillar gas and industrial engines, including G3612, G3616, G3520B, and G3608. It uses an air-powered drive motor and gear-pump design to circulate lubrication oil through the engine's prelubrication system before starting.
| Item | Specification |
|---|---|
| Product Name | Prelubrication Pump |
| Part Number | 1W-4776 |
| Brand | Caterpillar (Cat) |
| Machine Model | Cat G3612 / G3616 / G3520B / G3608 |
| Weight | 14.2 kg |
| Material | Heavy-duty metal construction, engineered for engine prelubrication applications |
| Condition | Brand New – Genuine |
| Warranty | 6 Months |
| Packaging | Standard Export Carton |
| Availability | Generally in stock |
| Origin | China |
The 1W4776 Pre-Lube Pump is compatible with:
Caterpillar’s official parts information also lists the 1W-4776 for a wider range of gas, industrial, generator-set, marine, and engine applications. Because equipment configurations can vary, customers should provide the engine model and serial number before ordering so compatibility can be verified.
The 1W4776 Air Pre-Lube Pump is suitable for equipment and power systems operating in demanding environments, including:
It is particularly suitable for industrial engines, gas engines, generator sets, and other applications where reliable pre-start lubrication is important.
YLCM provides professional spare parts sourcing and supply solutions for construction, mining, and industrial equipment customers worldwide.
We provide:
Our product range includes engine parts, lubrication components, turbochargers, hydraulic parts, drivetrain components, electrical parts, filters, seals, and other critical replacement parts for Caterpillar, Komatsu, Cummins, and other major brands.
Every 1W4776 Air Pre-Lube Pump is professionally protected for international transportation.
Packaging options include:
Proper packaging helps minimize the risk of impact, moisture, dust, and corrosion during handling and long-distance transportation.
YLCM provides flexible international logistics solutions according to destination, order quantity, delivery requirements, and customer preference.
Available options include:
For large or heavy orders, sea freight provides an economical solution, while multimodal logistics can be arranged according to the destination and delivery schedule.
Q1: What is 1W4776?
A: 1W-4776 is a Caterpillar Prelubrication Pump used to circulate lubrication oil through the engine prelubrication system before starting.
Q2: Which Cat engines are compatible with 1W4776?
A: The requested applications include G3612, G3616, G3520B and G3608. Caterpillar also lists the part for other engine and generator-set applications.
Q3: How does the pump operate?
A: The pump uses an air-powered drive motor and a gear-pump design to circulate lubrication oil through the prelubrication system.
Q4: What is the pump port size?
A: Caterpillar specifies a 1.5-inch (38.1 mm) port size.
Q5: What is the nominal pump capacity?
A: The specified nominal rating is 20 GPM at 1200 RPM and 30 GPM at 1800 RPM.
Q6: How can I confirm compatibility?
A: Please send your part number, engine model, and engine serial number. Our technical team can verify the application before shipment.
Q7: What is the warranty?
A: This product comes with a standard 6-month warranty.
Looking for the 1W4776 Air Pre-Lube Pump for CAT G3612/G3616/G3520B/G3608?
Contact YLCM today for:
Send us your engine model and serial number to confirm compatibility and receive a competitive quotation for your Caterpillar equipment.
