Diesel Engine Parts
Send OEM number, quantity, destination, or photos. We will reply with quotation, lead time, and fitment notes.
This premium quality 72mm STD Engine Piston Ring Set is specifically engineered for Kubota D850 and D905 diesel engines, as well as the Bx2200 tractor model. It serves as a direct replacement for OEM part numbers 15901-21050 and 15901-21052. Designed for B2B buyers worldwide, this piston ring set is a critical component for engine overhauls and rebuilds, ensuring optimal compression and oil control. We provide global shipping, serving major industrial markets in North America, Europe, Asia-Pacific, the Middle East, and South America with fast, reliable logistics.
| Specification | Detail |
|---|---|
| Part Numbers | 15901-21050, 15901-21052 |
| Size | 72mm (Standard / STD) |
| Engine Models | Kubota D850, D905 |
| Application | Kubota Bx2200 Tractor & Compatible Models |
| Material | High-Grade Cast Iron / Steel Alloy |
| Ring Type | Piston Ring Set (Top, Second, Oil Ring) |
| Condition | Brand New, Aftermarket Replacement |
This piston ring set is a direct replacement for the following original Kubota part numbers:
It is designed to meet or exceed the performance of the genuine Kubota components, ensuring a seamless fit during engine rebuilds.
We are a leading supplier of diesel engine components with a robust global supply chain. Our distribution network ensures fast and reliable delivery to:
We offer flexible shipping options (Air, Sea, Express) to meet urgent project timelines and provide full export documentation for hassle-free customs clearance.
Q1: How do I confirm these piston rings fit my Kubota D850 engine?
A: Please verify your engine’s cylinder bore diameter. This set is for a 72mm Standard (STD) bore. If your engine has been previously rebored, you may require an oversized ring set. Always check the part number on your old rings (15901-21050 or 15901-21052) for a direct match.
Q2: What is the correct installation procedure for these rings?
A: First, ensure the cylinder walls are clean and honed (if necessary). Install the oil ring first, followed by the second compression ring, and finally the top ring. Stagger the ring gaps 120 degrees apart around the piston. Lubricate the rings with engine oil before inserting the piston into the cylinder. Always follow the Kubota service manual for torque specifications.
Q3: Can these rings be used in a high-hour engine without a rebore?
A: It is recommended to check the cylinder bore for wear, taper, and out-of-roundness. If the bore is within manufacturer specifications (typically less than 0.05mm wear), standard rings can be used. However, for best performance and oil control, a light honing is advisable. If wear exceeds limits, an oversized piston and ring set will be required.
1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.
2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.
3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.
4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.
5. Scientific ERP system, easy and fast to locate the parts that customer needs.
6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.
1. Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).
2. Once we get confirmation of payment, we will ship products in 2 days.
3. Our packaging is standard export wooden box or others as your requirement.
4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
A: Normally we can supply any quantity if we have in stock.
A: We accept Western Union, T/T, Paypal.
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
A: In the beginning , We will communicate with clients in details to understand what they need .
Before packing , We will check the products and send photos to clients .After confirmation ,
We will packing products well to avoid damage . Once we get tracking number ,
We will send it to customer and keep contact in with clients .
