525-4478 5254478 370-5341 CONTROL Governor Motor Caterpillar
$1.00
525-4478 5254478 370-5341 CONTROL Governor Motor Caterpillar 310 307.5 308.5 305.5E 305E2 305.5E2 Mini Hydraulic Excavator Spare Parts
Number:525-4478 5254478 370-5341
Type:CONTROL Governor Motor Caterpillar
Application:Caterpillar 310 307.5 308.5 305.5E 305E2 305.5E2 Mini Hydraulic Excavator
Place of Origin:China/Japan
Packing: Fumigate Seaworthy Packing
Engine Brand: ISUZU/HINO/MITSUBISHI
Excavator Brand: New Holland/KOBELCO/HITACHI






1. 8T-4189 M
[2] BOLT (M8X1.25X20-MM)
2. 8T-4200 M
[2] BOLT (M8X1.25X16-MM)
3. 3S-2093 [2] STRAP-CABLE
4. 5P-4116 [2] WASHER-HARD (8.8X20.5X2-MM THK)
5. 8T-4138 M
[3] BOLT (M6X1X20-MM)
6. 8T-4224 [2] WASHER-HARD (8.8X16X2-MM THK)
7. 9X-8256 [3] WASHER (6.6X12X2-MM THK)
8. 522-6518 Caterpillar PLATE AS
6V-9632 M
[3] NUT-WELD (M6X1-THD)
9. 525-4478 Caterpillar MOTOR AS-GOVERNOR
10. 553-3269 Caterpillar BRACKET AS
8T-3490 M
[2] NUT-WELD (M10X1.5-THD)
11. 5C-2890 M
Caterpillar NUT (M6X1-THD)
1. 383-0195 [2] NUT-HEX
2. 383-0198 Caterpillar NUT-FLANGE
3. 383-0214 Caterpillar SEAL-O-RING
4. 398-5521 [2] PIN-SPRING
5. 383-0256 Caterpillar GASKET
6. 383-0308 [4] GASKET
7. 383-0317 [2] CAP
8. 383-0416 Caterpillar GASKET
9. 387-9886 Caterpillar SOLENOID AS
10. 387-9887 [2] BOLT-SOCKET HEAD
11. 388-7521 Caterpillar BOLT-ADJUSTMENT
12. 388-7526 Caterpillar COVER
13. 388-7527 Caterpillar BLOCK AS
14. 388-7528 Caterpillar NUT-FLANGE
15. 388-7530 Caterpillar LEVER AS
16. 388-7531 Caterpillar SHAFT
17. 388-7532 Caterpillar SPRING
18. 388-7533 Caterpillar SPRING
19. 388-7534 Caterpillar GASKET
20. 388-7535 [6] BOLT-FLANGE HEAD
21. 388-7536 Caterpillar NUT
22. 388-7540 Caterpillar COVER
23. 393-2923 Caterpillar SLEEVE
24. 393-2924 Caterpillar HOUSING
25. 393-2925 Caterpillar LEVER AS
26. 393-2926 Caterpillar SPRING
27. 393-2927 Caterpillar LEVER AS
28. 393-2928 Caterpillar LEVER AS
29. 393-2929 Caterpillar SPRING
30. 393-2930 Caterpillar LEVER AS
31. 393-2932 Caterpillar PIN
32. 393-2933 Caterpillar PIN
33. 393-2934 Caterpillar STUD
34. 393-2935 Caterpillar BOLT-ADJUSTMENT
35. 393-2936 Caterpillar BOLT-ADJUSTMENT
36. 393-2950 [3] SEAL-O-RING
37. 393-2951 [2] NUT
38. 393-7569 [2] STUD
39. 393-7570 [3] BOLT-FLANGE HEAD
40. 393-7581 [2] BOLT
Excavator Engine Spare Parts










GZ Wins Construction Machinery Co., Ltd. is engaged in development, production, marketing and agency services.
We are a manufacturer of specialization and diversification engineering machinery parts. Our products are selling well in America, Europe, Southeast Asia, the Middle East, Africa and other countries and regions.
We Provide Original Genuine Kobelco Parts,Include the following;
Kobelco Air-conditioning System,A/C Assembly, A/C Hose,A/C Compressor,A/C Condenser,Blower Assembly,Evaporator,A/C Pipe,A/C Receiver, A/C Filter.
Kobelco Body & Stamping Parts,CAB Assy, Engine Mounting,Engine Hood, Car Body,Door Panel,Roof.
Kobelco Hydraulics System,Set plate,Piston shoe,Cylinder block,Valve plate,Drive shaft,Ball guide,Piston pump,Gear pump.
We Provide Genuine MITSUBISHI HINO ISUZU Engine Parts.
Hino:J05E, J08E, P11C.
Mitsubishi: D04FR,4M40,6D16,6D22,6D24,6D31,6D34.
Isuzu:4HK1,4JJ1,4LE1,4LE2,4JB1,4BG1,6HK1,6WG1,6BG1,6UZ1,6BD1.
KOBELCO:SK60-III SK60-5 ,SK75-8,SK120LC-III SK120-5 ,SK130LC,SK140-8 SK140SRLC ,SK150LC,SK160,SK170,SK200-3 SK200-5 SK200LC-6E? SK200SR SK200-8,SK210LC-6E SK210LC-8, SK235SR,SK250LC-6E SK250 SK250-8,SK260-8 SK260-9,SK270,SK290LC,SK300LC-2 SK300LC-3 ,SK330LC-6E SK330,SK330LC-6E SK330-8 SK330-6,SK350-8 SK350LC SK350-9 ,SK460?SK460LC-IV SK480LC-6E SK460-8 SK480-6S ,SK485LC SK485-8 .
Kobelco Engine Assy,Engine Gasket Kits,Camshaft,Sprocket Camshaft,Tensioner,Crankshaft,Crankshaft Pulley,Crankshaft Bearing,Valve,Valve Seat,Valve Arm,Rocker Cover,Valve Spring,Valve Guide,Cylinder Head,Cylinder Liner,Cylinder Block,Washer,Piston,Piston Pin,Piston Ring,Piston Liner,Flywheel,Ring Gear of Flywheel,Timing Chain/Belt,Connecting Rod,Connecting Rod Bearing,Rocker Arm Shaft,Valve Cotter,Thrust Washer.
Injection Fueling System,Air Cleaner,Air Cleaner Cover,Exhaust Muffler,Exhaust Manifold,Exhaust Pipe,Intake Manifold,EGR Tube,Radiator,Water Hose,Fan,Thermostat,Oil Pan,Oil Level Gauge,Oil Filter.

Global Logistics & Secure Transit
We deliver high-performance construction machinery parts to wholesalers, repair shops, and operators worldwide. To minimize your machinery downtime, we offer flexible shipping options tailored to your urgency and budget:
Our Reliable Shipping Methods:
- Express Delivery (DHL, FedEx, UPS): 3–7 business days worldwide. Best for urgent orders (e.g., electronic controllers, injector nozzles, seal kits).
- Standard & Economy Shipping: 7–21 days depending on the destination. Ideal for cost-effective transit with full end-to-end tracking.
- Sea Freight & Air Cargo: Recommended for heavy assemblies such as complete engine blocks, hydraulic main pumps, and undercarriage track links.
Dispatch Timeline:
- Orders for in-stock items placed before 2:00 PM (GMT+8, Monday–Friday) are dispatched the same day.
- Later orders or customized orders will be shipped the next working day.
Critical Selection Reminder: Please make sure your Part Numbers match our product listings. If you are unsure, simply contact our engineering team via WhatsApp. We will cross-verify compatibility using official electronic catalogs (SIS/EPC) based on your machinery nameplate.
Payment Methods & Export Terms
To ensure a smooth B2B procurement experience, WinsParts supports multiple secure global payment methods:
- International Credit/Debit Cards: Secure online processing via Visa, Mastercard, and major global gateways.
- Digital Wallets: Fast and verified transfers via PayPal and Stripe.
- Bank Telegraphic Transfer (T/T): Recommended for large-scale wholesale orders. A formal Proforma Invoice (PI) containing our official corporate bank details will be sent via email upon order confirmation.
Export Customs & VAT Policy:
- All prices displayed on our website are exclusive of local VAT and destination import duties unless specified otherwise.
- Full shipping documentation—including Commercial Invoices, Packing Lists, and Certificates of Origin (CO)—is provided with every shipment to ensure seamless customs clearance in your country.
Gz Wins Construction Engineering Co., Ltd. is a premier manufacturer and global supplier specializing in the diversification of engineering machinery parts. With over a decade of industry expertise, we integrate development, production, and professional marketing to provide a one-stop solution for the world’s most demanding machinery brands.
We don’t just sell parts; we manage reliability. Our products are rigorously tested and successfully exported to America, Europe, Southeast Asia, the Middle East, and Africa. We pride ourselves on maintaining a massive inventory that ensures your machinery downtime is kept to an absolute minimum.
Strategic Brand Specialization
We are the preferred choice for heavy machinery operators who prioritize uptime and performance. Our inventory is specifically optimized for:
KOBELCO Excavators: * Unrivaled stock of Genuine Engine Components series.Full range of Hydraulic Pump & Valve solutions to restore factory-speed operation.
HITACHI Excavators: * Comprehensive parts support for Zaxis series, from ISUZU engine internals to advanced electronic controllers.
Why Professional Buyers Choose Us:
Technical Match Precision: We use official parts catalogs to ensure 100% compatibility based on your machine’s serial number.
Global Supply Strength: Specialized export experience to America, Europe, and the Middle East ensures smooth logistics for your KOBELCO and HITACHI parts.
