Product Details

16851-21114 16853-21050 Piston & Ring Kit for Kubota Z482 Engine Replacement Supplier

Kubota 16851-21114 16853-21050 Liner Kit Replacement for Z482 D722 Engines

Finding the right engine components for your Kubota Z482 or D722 series requires precision. If you are searching for 16851-21114 (Piston) and 16853-21050 (Piston Ring Set), you need parts that meet strict industrial tolerances to ensure long-term reliability and engine compression.

We specialize in OEM standard replacements for small diesel engines, supporting repair shops and fleet owners who cannot afford downtime. Our piston kits are engineered for high thermal resistance and optimized oil control.

Technical Product Data: Z482 & D722 Overhaul Kit

Model NO.	Z482 / D722 Engine Series	Part Number	16851-21114 (1685121114), 16853-21050 (1685321050)
Product Name	Piston & Ring Set (Liner Kit)	Type	Diesel Engine Internal Components
Payment Terms	T/T, Western Union, MoneyGram	Condition	Brand New, OEM Standard Replacement
Delivery Methods	DHL, Fedex, EMS, UPS / Air / Sea	MOQ	1 Piece
Stock Status	In Stock / Fast Dispatch	Packaging	Industrial Export Packing
Application	Engine rebuild, overhaul maintenance for tractors, excavators, and generators.

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WhatsApp: +8613532379052 Email: [email protected]

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Engine Model Compatibility & Dimensions Reference

Ensure your engine bore size matches the specifications below. This guide covers the most common D-series and Z-series engines using similar architecture.

Engine Model	Cylinder Bore (mm)	Piston Part Number	Piston Ring Set	Piston Pin Size (mm)
D722 / Z482	67	16851-21112 / 16851-21114	16853-21050	20 * 50
D782	67	1G688-21112	16853-21050	20 * 50
D750	68	15261-21110	15271-21050	20 * 50
D850	72	15956-21111	15901-21050	20 * 54
D902	72	1J091-21110	1T091-21050	20 * 50
D905	72	16224-21110	15901-21050	22 * 60
D950	75	15732-21112	15901-21050	20 * 54
D1005	76	16050-21113	16271-21050	22 * 60
D1100	76	15221-21110	15221-21050	23 * 64
D1101	76	15221-21110	15221-21050	23 * 64

6 Essential Points for Engine Parts Procurement

Feature	Premium Replacement (Our Choice)	Standard Market Grade
1. Material Density	High-silicon aluminum alloy for Z482 heat resistance	Standard casting (prone to cracking)
2. Ring Surface	Chrome plated or nitrided 16853-21050 rings	Plain iron (higher wear rate)
3. Accuracy	Micron-level CNC machining for pin bores	Variable tolerances causing noise
4. Thermal Expansion	Controlled expansion rate to prevent seizure	Poor stability at high temperatures
5. Inventory	Ready to ship from stock (Fast Dispatch)	Long lead times (Backordered)
6. Certification	OEM Standard ISO manufacturing processes	Unverified small workshops

Expert Maintenance FAQ: Z482 & D722 Engine Repair

1. Why is my engine blowing blue smoke after using 16851-21114 pistons?

Blue smoke usually indicates oil bypass. This often happens if the 16853-21050 rings were not seated correctly or if the cylinder liner was not honed to the correct cross-hatch pattern during the rebuild. Always verify the cylinder bore diameter matches the 67mm standard.

2. Can I use D722 piston rings on a Z482 engine?

Yes, both engines share the same 67mm bore architecture. The 1685321050 (16853-21050) ring set is compatible across these models, making it a versatile part for your maintenance inventory.

3. How do I prevent premature wear on my new engine overhaul kit?

Ensure your cooling system is fully functional and use high-quality diesel engine oil. Poor lubrication is the number one killer of new pistons and rings.

4. Why Choose This Piston & Ring Set?

Our parts utilize an OEM-standard tri-metal structure and are Trusted by repair shops & equipment fleets globally for heavy-duty applications.

Technical Inspection & Risk Management

Not sure how this issue affects your equipment? Maintenance delay can lead to catastrophic block failure. Our team helps operators:

Identify potential risks during maintenance (scuffing, blow-by, knocking).
Recommend suitable replacement parts if needed based on your serial number.
Support both inspection advice and parts supply for construction and ag-machinery.

We don't just sell parts; we provide the technical assurance your engine needs to run for another 5,000 hours.

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About Our Heavy-Duty Engine Parts Supply

We are a leading global supplier of premium internal engine components. Our inventory focuses on Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai engines. Whether you need a full engine assembly or specific maintenance items, we provide the following high-performance solutions:

Search terms for professional buyers: Heavy equipment engine rebuild parts, Z482 rebuild kit supplier, D722 piston ring factory, diesel engine liner kit wholesale, industrial engine maintenance components, aftermarket engine parts for excavators, mini-digger engine repair kits, high-pressure fuel system parts, marine diesel engine overhaul, generator engine spare parts, forged steel crankshafts, turbocharger replacement guide, hydraulic pump engine drive parts, cooling system water pump supplier, engine head gasket sealing solutions, agricultural tractor engine rebuild, forklift engine parts distributor, construction machinery engine parts, precision engine bearing sets, commercial vehicle diesel parts.

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