4191663 Main Hydraulic Pump Coupling Assy Hitachi
$1.00
Number:4191663
Type:Main Hydraulic Pump Coupling Assy
Application:Hitachi EX300-2 EX300-3 EX350H-5 EX300-3C EX345USR EX300-5
Place of Origin:China/Japan
Packing: Fumigate Seaworthy Packing
Engine Brand: ISUZU/HINO/MITSUBISHI
Excavator Brand: New Holland/KOBELCO/HITACHI
4191663 Main Hydraulic Pump Coupling Assy Hitachi EX300-2 EX300-3 EX350H-5 EX300-3C EX345USR EX300-5 Excavator Spare Parts
Number:4191663
Type:Main Hydraulic Pump Coupling Assy
Application:Hitachi EX300-2 EX300-3 EX350H-5 EX300-3C EX345USR EX300-5
Place of Origin:China/Japan
Packing: Fumigate Seaworthy Packing
Engine Brand: ISUZU/HINO/MITSUBISHI
Excavator Brand: New Holland/KOBELCO/HITACHI

1. 1026611
[1] Housing (SUB FOR AT200957)
1. 1026550 [1] Gear Case (SUB FOR AT202600)
4. 3035852 [1] Gear (SUB FOR TH111138)
5. 3081085 [1] Pinion Shaft (SUB FOR AT219648) (SUB FOR 3038090, ALONG W/
M804206, AND 4395457)
8. M804206 [1] Bearing (SUB FOR TH101792) (SUB FOR AT250102)
9. 4395457 [1] Ball Bearing (SUB FOR JD9320, THIS APPLICATION) (SUB FOR
AT250103)
10. 40M7120 [1] Snap Ring
11. TH109453 [1] Seal
12. 3033593 [1] Cover (SUB FOR TH109454)
13. AT264339 [1] O-Ring (SUB FOR TH100122)
14. 40M5463 [1] Snap Ring (SUB FOR 40M7178)
17. 9217993 [1] Pump (SUB FOR TH109457 AND 4181700) GEAR
19. 19M8337 [2] Screw M10 X 30
20. 12M7135 [2] Lock Washer 10 MM (SUB FOR 12M6791)
21. 24M7028 [2] Washer 10.500 X 20 X 2 MM
23. 4191974 [1] Adapter Fitting (SUB FOR TH109459)
23A. 4506418 [1] O-Ring (SUB FOR U46489)
28. T200649 [2] Helical Gear (SUB FOR TH111139 OR 3035853)
29. 40M7166 [2] Snap Ring
32. AT201174 [2] Pump NLA, (ORDER AT217368)
32. AT217368 [2] Pump NLA, (ORDER 9127385EX)
32. 9127385 [2] Hydraulic Pump
32. 9127385EX [2] Hydraulic Pump
Reman
(REMAN FOR AT201174 OR 9127385) (SUB FOR AT217368)
32. AT204769 [2] Pump NLA, (ORDER AT217349)
32. AT217349 [2] Pump NLA, (ORDER 9136850EX)
32. 9136850 [2] Hydraulic Pump NLA, (ORDER 9136850EX)
32. 9136850EX [2] Hydraulic Pump
Reman
(REMAN FOR AT204769 OR 9136850) (SUB FOR AT217349)
35. 19M7489 [8] Cap Screw M16 X 45 (SUB FOR 19M7396)
36. 4126090 [4] Sealing Washer (SUB FOR TH109463)
37. 12H294 [4] Lock Washer 5/8″
40. A2093R [1] Pipe Plug 19.050 MM (3/4″)
40. 4234782 [1] Plug (SUB FOR AT200990)
41. 15H621 [1] Elbow Fitting 3/4″
50. 4192946 [2] Oil Line (SUB FOR TH111242)
52. 4192947 [2] Oil Line (SUB FOR TH111243)
53. 4293950 [6] Elbow Fitting (SUB FOR TH109468 OR AT160584)
53A. M800650 [1] Packing
54. 4203485 [2] Fitting (SUB FOR TH109466)
54A. M800650 [1] Packing
55. 3036249 [1] Oil Line (SUB FOR TH111142)
56. 3036486 [1] Oil Line (SUB FOR TH111155)
57. 4118499 [4] Elbow Fitting (SUB FOR TH101821)
57A. M800650 [1] Packing
59. 4179843 [2] Clamp (SUB FOR TH109471)
60. 19M7377 [1] Cap Screw M8 X 28
61. 14M7273 [1] Nut M8
62. 12M7056 [1] Lock Washer 8 MM (SUB FOR 12M7065)
63. 4242263 [1] Dipstick (SUB FOR TH112088)
64. 4242262 [1] Oil Tube (SUB FOR TH112089)
65. 19M7932 [2] Cap Screw M8 X 16
66. 9742779 [1] Gasket (SUB FOR TH112091) (SUB FOR AT214401)
68. 37H99 [2] Screw 0.100″ X 1/4″
69. 4265372 [1] Sensor (SUB FOR AT154297) ENGINE SPEED SENSOR
70. 4306888 [1] O-Ring (SUB FOR AT154310)
71. 24M7054 [1] Washer 6.400 X 12 X 1.600 MM
72. 19M8553 [1] Screw M6 X 16
73. 4191663 [1] Coupling (SUB FOR TH111234)
73B. 22M7137 [2] Set Screw M16 X 16
73C. 34M7117 [12] Spring Pin 5 X 10 MM
73D. 4216947 [4] Insert (SUB FOR TH111402)
73E. 4216949 [4] Screw (SUB FOR TH111404)
73F. 4216944 [1] Coupling
73G. 4216948 [4] Screw (SUB FOR TH111403)
77. 0209423 [1] Bolt (SUB FOR TH100738)
78. 12M7133 [1] Lock Washer 6 MM (SUB FOR 12M7129)
80. 0311336 [1] Pipe Plug (SUB FOR TH109082)
81. CH11570 [1] O-Ring
New Holland KOBELCO HITACHI Excavator 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.
