VIO45-6A Boom Cylinder Seal Kit Set 172B04-72280 172B04-72290 172B04-72010
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VIO45-6A Boom Cylinder Seal Kit Set 172B04-72280 172B04-72290 172B04-72010

Product Details :

Product name: Boom Cylinder Seal Kit
Usage: construction machinery, marine, air compressors, industrial machines
Machine brand: Yanmar
Machine model: VIO45-6A
Part number: 172B04-72280 172B04-72290 172B04-72010

Payment & Shipping Terms :

Payment: Western Union, PayPal, T/T, etc

Detailed Product Description

VIO45-6A Boom Cylinder Seal Kit Set 172B04-72280 172B04-72290 172B04-72010

Product Name:Boom Cylinder Seal Kit
Place of Origin:China(Mainland)  
Brand Name:Yanmar
Available Model number:172B04-72280 172B04-72290 172B04-72010
Part number: 172B04-72280 172B04-72290 172B04-72010
Warranty:3 months
Availability:in Stock
MOQ(Minimum Order Quantity): 1 Piece
Supply Ability:500pcs per week
Port:Guangzhou/ Shenzhen/ Hongkong 
Delivery MethodsExpress: DHL FedEx EMS UPS
Payment Methods:Bank transfer, Western Union, Credit Card, Paypal
Type:OEM replacement aftermarket 

General Introduction:

We are a professional construction machinery parts supplier located in Guangzhou China. Our main products are couplings, oil seal kits, solenoid valves, control valves, hydraulic parts, final drive parts, engine parts, etc. 

We have both factory and trading company which enable us more flexible.

About Shipping & Payment:

If the quantity of orders is not very big, we could send them to you by express delivery, such as TNT, DHL, UPS, OR EMS, etc.

If an order is big, we will advise you to use Air Shipping or Sea Shipping through your nominated forwarder agent. Our long-term cooperated agent is also available.

What is a speed sensor?

1. The engine speed sensor, also known as the crankshaft position sensor, is one of the most important sensors in the EFI engine control system. The function of the engine speed sensor is to detect the engine speed, determine the position of the crankshaft, detect the top dead center signal of the piston and the crankshaft angle signal, and transmit the detected signal to the ECU to control the ignition timing and fuel injection timing;

2. The structure and working principle of the engine speed sensor and the camshaft position sensor are basically the same, and they cooperate with each other to ensure the normal operation of the engine. Usually installed together, usually in the distributor, on the gearbox clutch housing, at the front end of the crankshaft or the rear end of the crankshaft, using a pulse signal speed sensor to measure the engine speed. Some are installed on the front end of the crankshaft, the front end of the camshaft or the flywheel, and the specific installation position is related to the type of engine speed sensor;

3. The engine speed sensor can be divided into three types: magnetic induction type, photoelectric type, and Hall type according to the principle of the sensor generating signal. The electromagnetic induction speed sensor is divided into 2-wire or 3-wire systems, while the common Hall-type speed sensor is a 3-wire system. The 2 wires are the power wire and the AC signal wire respectively, and the third wire of the 3 wires is the AC signal shield wire, which is connected to the ground.


1. What's your core activity (do you deal with engine replacement parts, fuel system, undercarriage, etc)?

We mainly do the couplings, seal kits, electric parts (like solenoids, sensors, throttle motors, computer control board), hoses, fans, gear parts, hydraulic parts, bearings, etc.

2. Which kind of machinery do you work with (bulldozers, front loaders, graders, excavators, etc)?

We mainly do excavator parts and some parts for air compressors and bulldozers.

3. What brands of machinery do you work with?

We supply parts for brands like Hitachi, Caterpillar, Komatsu, Sumitomo, Hyundai, Kobelco, Liebherr, JCB, etc.

We mainly do small to medium size excavator parts.

4. Do you have the stock?

Most of our products are in stock.

5. Can you send us the price list ( so that we do not always bother you when we need the price info)?

Sorry that we don't have a complete price list. We do many parts. We can't offer such a complete price list. You're welcome to contact us if you need anything.

6. If we make the order, can we pay as an individual? Or we should make the contract for each delivery?

We accept Western Union, PayPal, T/T, and Trade Assurance Transactions on

We have two stores on

For small orders, we recommend Western Union, PayPal, and Trade Assurance Transaction on

For PayPal and Trade Assurance Transaction on, you'll need to pay an extra 5% of the total amount to cover the transaction cost.

For T/T, you'll need to pay an extra 50 USD to cover the bank charge if the order is less than 1000 USD.

7. What is your usual way of delivery?

Usually, we send with DHL, UPS, and EMS. We also send by sea by bulk order.

8. When can you send out the goods that we ordered?

The handling days depend on your order volume. For small orders, if all products are in stock, we usually send out goods within 3 business days.

Contact Details

Send your inquiry directly to us

Contact Person:

Sales team:

WhatsApp / Mob.: +86 18924250310 

Wechat: ynfmachinery

Skype: ynfrubber


Mr. Jason Huang:

WhatsApp / Mob.: +86 137 6336 7453

Wechat: wing3t

QQ: 330645472 

Ms. Sherrie Zhang:

WhatsApp / Mob.: +86 13602850555

Wechat: sherrie

QQ: 1405852734

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