Kubota D902 Diesel Engine Piston Ring Set OEM 1G962-21112 1G460-21050

MOQ： 1 SET
Price： $22
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Model NumberOEM Part Number / Cross Reference	1G962-21112 1G460-21050
Payment Terms	T/T,,D/A
Delivery Time	Ships in 24h (1-7 days max)
Packaging Details	Carton Packing, Wooden Case, Plastic Pallet, Paper Pallet.
Applicable Engine Model	Kubota D902
Quality Assurance	100% dimensional inspection – meets or exceeds OEM specifications for gap, width, and tension
Ring Type	Complete set includes compression rings and oil ring – precision-matched for optimal sealing and oil control
Oil Ring Design	Multi-piece oil ring with expander spring – maintains consistent wall pressure for effective oil control
Surface Treatment	Chrome-plated / phosphate-coated compression rings – reduces friction and improves durability
Size Availability	Standard size and oversize options available – verify cylinder bore condition before ordering
Material	High-grade cast iron / ductile iron with wear-resistant coatings – ensures long service life under extreme conditions
Brand Name	For Kubota
Model Number	D902
Certification	ISO 9001
Place of Origin	CHINA

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Product Specification


Model NumberOEM Part Number / Cross Reference	1G962-21112 1G460-21050	Payment Terms	T/T,,D/A
Delivery Time	Ships in 24h (1-7 days max)	Packaging Details	Carton Packing, Wooden Case, Plastic Pallet, Paper Pallet.
Applicable Engine Model	Kubota D902	Quality Assurance	100% dimensional inspection – meets or exceeds OEM specifications for gap, width, and tension
Ring Type	Complete set includes compression rings and oil ring – precision-matched for optimal sealing and oil control	Oil Ring Design	Multi-piece oil ring with expander spring – maintains consistent wall pressure for effective oil control
Surface Treatment	Chrome-plated / phosphate-coated compression rings – reduces friction and improves durability	Size Availability	Standard size and oversize options available – verify cylinder bore condition before ordering
Material	High-grade cast iron / ductile iron with wear-resistant coatings – ensures long service life under extreme conditions	Brand Name	For Kubota
Model Number	D902	Certification	ISO 9001
Place of Origin	CHINA
High Light	Kubota D902 Engine Piston Ring ，1G962-21112 Engine Piston Ring ，1G460-21050 piston ring

Kubota D902 Diesel Engine Piston Ring Set | OEM 1G962-21112 1G460-21050 | Engine Piston Ring

Rebuild or overhaul your compact excavator, tractor, or industrial equipment with this high-quality piston ring set for the Kubota D902 diesel engine. Piston rings are critical components that seal the combustion chamber, control oil consumption, and transfer heat from the piston to the cylinder wall. Manufactured to meet or exceed original OEM specifications, this piston ring set ensures proper compression, reduced blow-by, and long-term durability in demanding applications. Direct replacement for multiple OEM numbers including 1G962-21112, 1G460-21050, and related variants. Fits a wide range of Kubota-powered compact equipment – verify your engine model and serial number for compatibility.

Technical Specifications

Parameter	Details
Engine Model	Kubota D902, D902-E, D902-E2B, D902-E3B, D902-E4B
Part Name	Piston Ring Set (Complete Set per Piston)
OEM Part Numbers	1G962-21112, 1G460-21050
Cylinder Bore Diameter	72 mm
Number of Rings per Piston	3 (Top Ring, Second Ring, Oil Ring)
Top Ring Width	1.50 mm
Second Ring Width	1.50 mm
Oil Ring Width	3.00 mm
Top Ring Gap	0.15 - 0.30 mm
Second Ring Gap	0.30 - 0.45 mm
Oil Ring Gap	0.15 - 0.30 mm
Ring-to-Groove Clearance	0.090 - 0.120 mm
Material	High-Grade Cast Iron / Ductile Iron with Wear-Resistant Coating
Condition	Brand New
Warranty	6 Months

Compatible Equipment & Applications

Equipment Type	Applicable Models
Mini Excavators	Kubota KX018, KX41, KX41-3, U17
Tractors	Kubota BX25, BX2350D, BX2230D, BX2360, BX24
Utility Vehicles	Kubota RTV900, RTV900G, RTV900R
Mowers	Kubota ZD323
Other Applications	Generators, industrial pumps, and agricultural machinery powered by Kubota D902 diesel engines

Product Features & Engineering Advantages

✓ Critical Component for Engine Performance – Piston rings serve three essential functions: sealing the combustion chamber to maximize compression, regulating oil consumption by controlling lubricant flow, and transferring heat from the piston to the cylinder wall for proper cooling.
✓ Precision-Engineered for Kubota D902 Engine – Specifically designed for the 72mm bore of the Kubota D902 engine platform, matching factory specifications for ring width, gap, and tension.
✓ Three-Ring Design with Specific Profiles – Each piston requires three rings: top ring for combustion pressures, second ring for sealing and oil control, and multi-piece oil ring for oil film regulation.
✓ Factory-Spec Ring Gaps – Manufactured to provide correct end gaps: top ring 0.15-0.30 mm, second ring 0.30-0.45 mm, oil ring 0.15-0.30 mm.
✓ Correct Ring-to-Groove Clearance – Engineered to maintain proper clearance between ring and piston ring groove at 0.090-0.120 mm.
✓ Wear-Resistant Materials – Constructed from high-grade cast iron or ductile iron with wear-resistant coatings on compression rings.
✓ Rigorous Quality Testing – Every ring set meets dimensional specifications for gap, width, and tension through comprehensive inspection.
✓ OEM-Equivalent Performance – Manufactured to meet or exceed original Kubota specifications, ensuring perfect compatibility with D902 engine components.

Quality Assurance & Why Choose Us

100% Inspected – Every ring set undergoes dimensional inspection for proper gap, width, and tension before shipment.
OEM Standard – Manufactured to meet or exceed original Kubota specifications in ISO-certified facilities.
Warranty – 6-month warranty against manufacturing defects.
Global Shipping – Fast DHL, FedEx, UPS shipping available from multiple warehouses.
Expert Support – Need help identifying the correct piston ring set? Send us your engine serial number or old part number.

Installation Note (Technical Reference)

Always verify correct ring set based on engine serial number and cylinder bore size.
Before installation, measure ring gap by inserting the ring into the cylinder bore and using a feeler gauge.
Clean ring grooves thoroughly before installation – carbon deposits will prevent proper ring seating.
Check ring-to-groove clearance with a feeler gauge. Factory clearance is 0.090-0.120 mm.
Install rings using a proper ring expander tool to avoid distortion or damage.
Stagger ring end gaps around the piston according to factory specifications.
Professional installation is recommended due to the precision required for proper ring seating and engine break-in.

Warning: Never install new rings without deglazing cylinder bores. Improper ring seating can cause excessive oil consumption, blow-by, and premature engine failure. Always follow factory break-in procedures after ring replacement.

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory

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Business Type:

Manufacturer,Exporter 


Year Established:

2018 


Total Annual:

400,000-USD 600,000


Employee Number:

>50 


Ecer Certification：

Verified Supplier 

About Jusheng Precision With over 20 years of focused experience in engine parts for construction machinery, Guangzhou Jusheng Precision Manufacturing Co., Ltd. has become a top company in the industry. We’ve achieved this through strong technical skills and a constant drive to improve. We have ... About Jusheng Precision With over 20 years of focused experience in engine parts for construction machinery, Guangzhou Jusheng Precision Manufacturing Co., Ltd. has become a top company in the industry. We’ve achieved this through strong technical skills and a constant drive to improve. We have ...

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Guangzhou Jusheng Precision Manufacturing Co., Ltd
Company Name: Guangzhou Jusheng Precision Manufacturing Co., Ltd.
https://www.excavatorsparesparts.com/

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