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I appreciate the help from Paul, he's prefessional and knows exactly what parts I need. My CAT has gone back to work without any problem.

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20T-03-81310 3F4508604 Hose KOMATSU Excavator Spare Parts For PC30R-8 PC35R-8 PC40R-8

Large Image : 20T-03-81310 3F4508604 Hose KOMATSU Excavator Spare Parts For PC30R-8 PC35R-8 PC40R-8

Product Details:

Place of Origin:	China
Brand Name:	OEM
Model Number:	20T-03-81310 3F4508604

Payment & Shipping Terms:

Minimum Order Quantity:	1 PCS
Price:	16 USD / pcs
Packaging Details:	Wooden box for heavy parts, paper carton for light parts
Delivery Time:	3-7 working days
Payment Terms:	T/T, D/P, D/A,Western Union, L/C, MoneyGram
Supply Ability:	100-2000

Contact Now

Detailed Product Description

Category:	Cooling (Piping And Mounting)	Part Number:	20T-03-81310 3F4508604
Product Name:	Hose	Machine Number:	PC30R PC35R PC40R PC45R
Application:	Excavator	Lead Time:	1-3 Days For Delivery
Packing:	Standard Export Carton
Highlight:	Komatsu excavator hydraulic hose , PC30R-8 replacement hose , Excavator spare parts with warranty

20T-03-81310 3F4508604 Hose KOMATSU Excavator Spare Parts For PC30R-8 PC35R-8 PC40R-8

Specifiion

Category	Cooling (Piping And Mounting)
Name	Hose
Parts No	20T-03-81310 3F4508604
Machine Number	PC30R PC35R PC40R PC45R
Lead time	1-3 DAYS
Quality	Brand new, OEM quality
MOQ	1 PCS
Means of transport	By sea/air, DHL FEDEX UPS TNT
Packing	As request or standard packing

Key functions & working principle

Working Principle	1. Sealing Contact: The NBR lip (coated with Teflon) presses tightly against the rotating shaft, creating a physical barrier that traps lubricating oil/hydraulic fluid inside the component (e.g., hydraulic motor).
	2. Spring Compensation: As the lip wears over time, the stainless-steel spring expands slightly, maintaining constant pressure on the shaft to preserve the seal—preventing leakage.
	3. Contaminant Blocking: The outer edge of the seal’s metal case forms a static seal with the housing bore, while the lip blocks external debris from entering the component (avoids abrasive damage to shafts or bearings).
	4. Heat Management: The Teflon coating reduces friction-induced heat, preventing the rubber lip from hardening or degrading at high operating temperatures.
Core Functions	1. Leak Prevention: Stops oil/hydraulic fluid leakage from rotating shafts – avoids fluid loss (which causes component starvation) and environmental contamination (e.g., oil spills on job sites).
	2. Contaminant Protection: Blocks dust, gravel, and moisture from entering precision components (e.g., hydraulic pumps, engine bearings) – prevents premature wear and costly repairs.
	1. Component Longevity: Maintains proper lubrication levels in engines/transmissions – extends the life of shafts, bearings, and gears by reducing metal-to-metal contact.
	4. System Efficiency: Eliminates leakage-related pressure drops in hydraulic systems – ensures excavators/loaders maintain full lifting/digging power.

Compatible models

EXCAVATORS PC30R PC35R PC40R PC45R Komatsu

More other hose applied to KOMATSU heavey machine

23S-62-25272 HOSE, 2080MM

LW250, PC40R, PC45R

YM121250-59550 HOSE,SPILL

3D75, 3D75N, 3D78, 3D78AE, 3D78N, 3D80, 3D82AE, 3D82E, 3D84, 3D84E, 3D84N, 3D88E, 4D84, 4D84E, 4D88E

07288-00717 HOSE

CD30R, PC15MR, PC15MRX, PC27MR, PC27MRX, PC28UU, PC30MR, PC30MRX, PC30R, PC30UU, PC35R, PC38UU, PC38UUM, PC40R, PC45R, WA20

20S-62-81570 HOSE

PC30R, PC35R, PC40R, PC45R

20T-970-8810 HOSE

PC30R, PC35R, PC40R, PC45R

20T-62-81890 HOSE

PC30R, PC35R, PC40R, PC45R

20T-910-8780 HOSE

PC30R, PC35R, PC40R, PC45R

20T-62-84120 HOSE

PC40R, PC45R

20T-62-82250 HOSE

PC45R

22F-62-32120 HOSE

PC30MR

22L-943-3210 HOSE

PC30MR

22L-931-R210 HOSE

PC30MR

02766-00204 HOSE

HM300, HM350, HM400, PC30MR, PC45MR, PC55MR, PW200, PW220, WA150PZ, WA200PZ, WA250, WA250PZ, WA320, WA320PZ

02765-002A8 HOSE

PC30MR

02766-00215 HOSE

PC30MR, PC35MR, PW140, PW148, PW180, WA470, WA480

20T-01-81442 HOSE

PC30R, PC35R, PC40R, PC45R

20T-01-81443 HOSE

PC30R, PC35R, PC40R, PC45R

20S-01-81430 HOSE

PC30R, PC35R

20S-03-81410 HOSE

PC30R, PC35R, PC40R, PC45R

20T-03-81322 HOSE,LOWER

PC30R, PC35R, PC40R, PC45R

20T-03-81321 HOSE,LOWER

PC30R, PC35R, PC40R, PC45R

Directory listing

Pos.	Part No	Qty	Parts name	Comments
1	20T-03-81310	[1]	HOSE,UPPER Komatsu China
			["SN: 35001-37409"] analogs:["3F4508604"]
2	207-09-11110	[2]	CLAMP Komatsu	0.054 kg.
			["SN: 35001-@"] analogs:["0728900045"]
3	20T-03-81321	[1]	HOSE,LOWER Komatsu China
			["SN: 35001-37409"] analogs:["3F4508603"]
5	196-916-1590	[1]	CLIP Komatsu China
			["SN: 35001-@"]
6	01010-80812	[1]	BOLT Komatsu	0.01 kg.
			["SN: 35001-@"]
7	01643-30823	[1]	WASHER Komatsu	0.004 kg.
			["SN: 35001-@"] analogs:["802070008", "802150008", "0160510818", "0164310823", "802170001", "01643A0823"]
8	20T-03-81360	[1]	TANK,RESERVE Komatsu China
			["SN: 35001-@"]
9.	20T-03-81370	[1]	CONDUCTION ASS'Y Komatsu China
			["SN: 35001-@"]
10	20T-03-71450	[2]	CLAMP Komatsu China
			["SN: 35001-@"]
11	20T-03-71420	[1]	BRACKET Komatsu China
			["SN: 35001-@"] analogs:["3F1009603"]
12	01220-40616	[2]	SCREW Komatsu	0.005 kg.
			["SN: 35001-@"] analogs:["0122070616"]
13	01602-20619	[2]	WASHER,SPRING Komatsu	0.004 kg.
			["SN: 35001-@"] analogs:["802150506"]
14	01643-30623	[2]	WASHER Komatsu	0.002 kg.
			["SN: 35001-@"] analogs:["0164370623"]
15	20S-03-81341	[1]	BRACKET Komatsu China
			["SN: 35001-@"] analogs:["20S03R090511", "3F3009051"]
16	01010-80820	[2]	BOLT Komatsu	0.013 kg.
			["SN: 35001-@"] analogs:["801014067", "0101050820", "801015086"]
18	01010-81020	[2]	BOLT Komatsu	0.161 kg.
			["SN: 35001-@"] analogs:["801014093", "0101051020", "801015108"]
19	01643-31032	[2]	WASHER Komatsu	0.054 kg.
			["SN: 35001-@"] analogs:["802150510", "0164331030", "0164381032", "0164371032", "0164331022", "0164321032", "0164301032", "6127212530", "802170002", "R0164331032"]
20	20T-03-81290	[1]	BRACKET Komatsu China
			["SN: 35001-@"] analogs:["3F3008606"]
23	20T-54-82371	[1]	SHEET Komatsu China
			["SN: 35001-@"] analogs:["3F3008602", "20T5482370"]
23	20T-54-82370	[1]	SHEET Komatsu China
			["SN: (35001-37409)"] analogs:["3F3008602", "20T5482371"]
24	20T-46-82161	[1]	SHEET Komatsu China
			["SN: 35001-@"] analogs:["3F3008603", "20T4682160"]
24	20T-46-82160	[1]	SHEET Komatsu China
			["SN: (35001-37409)"] analogs:["3F3008603", "20T4682161"]
25	20T-46-82171	[1]	SHEET Komatsu China
			["SN: 35001-@"] analogs:["3F3008604", "20T4682170"]
25	20T-46-82170	[1]	SHEET Komatsu China
			["SN: (35001-37409)"] analogs:["3F3008604", "20T4682171"]
26	20T-46-82210	[1]	SHEET Komatsu China
			["SN: 35001-@"] analogs:["3F3008605"]
26A.	20T-46-82440	[1]	SHEET Komatsu China
			["SN: 36888-@"]
27	21X-03-21380	[1]	COCK Komatsu China
			["SN: 35001-37409"]
28	205-03-62660	[1]	PLUG Komatsu	0.01 kg.
			["SN: 35001-@"]
29.	07000-01007	[1]	O-RING Komatsu	0.001 kg.
			["SN: 35001-@"] analogs:["0700011007", "YM24311000070"]
32	20T-03-81350	[1]	TUBE Komatsu China
			["SN: 35001-37409"]
32A.	206-03-43340	[2]	CLIP Komatsu	0.01 kg.
			["SN: 35002-@"]
33	20S-46-81641	[1]	COVER Komatsu China
			["SN: 36972-37409"]
33	20S-46-81640	[1]	COVER Komatsu China
			["SN: 35001-36971"] analogs:["20S46R350581", "3F3035058"]
34.	20S-46-81652	[1]	SHEET Komatsu China
			["SN: 36972-37409"]
34.	20S-46-81651	[1]	SHEET Komatsu China
			["SN: 35001-36971"] analogs:["3F3035724", "20S4681650"]
37	20T-46-81680	[1]	SEAL Komatsu China
			["SN: 36972-37409"]
38	20S-46-81670	[1]	SHEET Komatsu China
			["SN: 36972-37409"]

20T-03-81310 3F4508604 Hose KOMATSU Excavator Spare Parts For PC30R-8 PC35R-8 PC40R-8 0

We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .

Tag:

Contact Person: Mr. Paul

Tel: 0086-15920526889

Fax: +86-20-89855265

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20T-03-81310 3F4508604 Hose KOMATSU Excavator Spare Parts For PC30R-8 PC35R-8 PC40R-8

20T-03-81310 3F4508604 Hose KOMATSU Excavator Spare Parts For PC30R-8 PC35R-8 PC40R-8

Komatsu excavator hydraulic hose

PC30R-8 replacement hose

Excavator spare parts with warranty

heavy equipment parts,

heavy machinery spare parts,

excavator parts