Product Specifications
| Parameter | Details |
|---|
| Part Name | High-Strength Connecting Rod Bolt |
| Part Number (OEM Reference) | 16851-22140, 1685122140, 16851-2214-0 |
| Brand Compatibility | Kubota |
| Engine Fitment | Kubota D722 Engine |
| Material | Grade 12.9 High-Tensile Alloy Steel |
| Condition | New Aftermarket |
| Warranty | 6-month manufacturer defect warranty |
| Packaging | Individual blister pack with anti-corrosion coating and protective foam insert |
Compatible Models
| Brand | Applicable Models |
|---|
| Kubota Tractor | B7300HSD, B7400HSD, B7410D, BX1500D, BX1800D, BX1830D, BX1850D, BX1860, BX1870, BX1870-1, BX1880, BX1880-1, BX2230D, BX2350D, BX2360, BX2370, BX2370-1, BX2380, BX2380-1, BX23S, BX23S-1, BX24D, BX25, BX25DLB, BX25DLB-1, T1600H, T1600H-EUROPE, T1600H-G, G1700, G1800, G1800-S, G1900, G1900-S, G2000, G2000-S, G2160, G2160AU, G2160-DS, G2460G, GF1800, GF1800E, GR2100, GR2110, GR2120, GR2120-2, GR2120B, GR2120B-2 |
| Kubota Excavator | K-008, K008-3 KCL, K008-3 KTC, K008-5, KH-007H, KX018-4, KX41-3, U10-5, U15, U17 |
| Kubota UTV | RTV900G, RTV900G6, RTV900G9, RTV900R6, RTV900R9, RTV900R-SD, RTV900R-SDL, RTV900T, RTV900T5-H, RTV900T5-T2, RTV900T6, RTV900T9, RTV900W, RTV900W6, RTV900W6SE, RTV900W8SE, RTV900W9, RTV900W9SE, RTV900XTG, RTV900XTR, RTV900XTS, RTV900XTT, RTV900XTW, RTV-X900G, RTV-X900R, RTV-X900W |
| Kubota Loader | SCL1000 |
| Kubota Mower | TG1860, ZD1011, ZD1011-3, ZD1021, ZD1021-3, ZD18, ZD18F, ZD21, ZD21F, ZD221, ZD321, ZD321N, ZD323, ZG332LP, ZG332P, ZP330LP, ZP330P |
Tired of Connecting Rod Bolt Failure on Kubota D722 Engines? Get the Reliable 16851-22140 Replacement Bolt Now
Every unscheduled engine shutdown on a Kubota tractor or excavator costs hundreds — often thousands — in lost productivity and labor. Field reports show that substandard connecting rod bolts cause up to 68% of D722 engine bearing failures during high-load operation. OEM lead times stretch to 3 weeks, while counterfeit 16851-22140 bolts fail within 200 operating hours due to inconsistent heat treatment and poor thread tolerance.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
This high-strength connecting rod bolt is manufactured in ISO 9001-certified facilities and undergoes full torque-tension validation before shipment. Designed for Kubota D722 engine rebuilds in tractors like the BX25DLB and excavators such as the KX41-3, it delivers identical clamping force and fatigue resistance as genuine parts — without the OEM markup. With 10 years of global export experience and over 10,000 SKUs in stock, XUNPO ensures technical accuracy and fast response for urgent maintenance needs.
Where This Part Works
This bolt secures the connecting rod to the crankshaft under extreme cyclic loads — up to 120 MPa peak stress during full-throttle operation in agricultural tillage, quarry loading, and demolition site excavation. In compact utility loaders like the SCL1000 or zero-turn mowers like the ZD1021, consistent bolt integrity prevents catastrophic crankcase failure when operating continuously at ambient temperatures above 45°C. That’s why precise material grade and surface finish are non-negotiable.
Engineering Details That Matter
Grade 12.9 alloy steel provides minimum tensile strength of 1200 MPa and yield strength of 1100 MPa — critical for resisting plastic deformation during cold starts and high-RPM transients. Each bolt undergoes quench-and-temper heat treatment verified by Rockwell C-scale hardness testing (HRC 38–42). Thread pitch and flank angle are held to ±0.02 mm tolerance for uniform load distribution across all 6 threads engaged in the rod cap. A black oxide surface finish resists salt-spray corrosion for over 96 hours — essential for coastal port operations and humid rice-field environments. Dimensional verification includes go/no-go gauge checks on major, minor, and pitch diameters per ISO 965-1 standards.
The Real Cost of Wrong Parts
A $3.20 counterfeit 16851-22140 bolt may save pennies upfront — but causes crankshaft scoring, bearing seizure, and cylinder head warping within 150 hours. Repair labor alone exceeds $1,200; total downtime for a ZD1021 mower during peak season can cost $4,800 per day. Genuine-equivalent parts like this one meet Kubota’s original torque specification of 45 N·m ±3% and maintain preload retention above 85% after 1,000 thermal cycles. Total cost of ownership drops by 37% over 3 years when using ISO-tested aftermarket components instead of uncertified alternatives. This 16851-22140 replacement bolt for B7300HSD and BX25DLB models delivers measurable reliability — not just lower price.
Why Customers Trust XUNPO
We only partner with ISO 9001-certified factories and perform incoming material inspection on every batch. Every 16851-22140 bolt undergoes 100% functional performance testing before shipment to ensure OEM-equivalent clamping force and thread integrity. We offer a 6-month warranty covering manufacturing defects with no-questions-asked replacement. With 10 years’ experience exporting to 120+ countries, our team has verified over 24,000 part-machine combinations. Our 20+ technical specialists respond to part-match requests within 2 hours — including cross-reference for legacy Kubota models. Over 10,000 SKUs are held in ready-to-ship condition at our Guangzhou warehouse, enabling 2–5 working day dispatch on all in-stock items.
Packaging & Shipping
- Individually sealed in anti-corrosion blister packs with EPE foam cushioning inside reinforced corrugated boxes
- In-stock items ship within 2–5 working days from Guangzhou warehouse
- Flexible logistics: Express (DHL/FedEx/UPS), air freight, and sea freight options available
- Real-time tracking number provided upon dispatch
- MOQ: 1 piece — designed for emergency field repairs and small workshop inventories
Get Your 16851-22140 Connecting Rod Bolt Now
Your Kubota D722 engine shouldn’t wait weeks for a single bolt. Send us your part number, machine model (e.g., BX25DLB or ZD1021), and required quantity — we’ll email a competitive quote within 24 hours. First-time buyers can request a sample for physical verification before placing bulk orders. Every hour your equipment sits idle, revenue stops — act now to restore uptime.
Frequently Asked Questions
Q: Is this an original Kubota part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket part, produced in ISO 9001-certified factories to match Kubota’s original dimensional, material, and performance specifications.
Q: How do I confirm if this 16851-22140 bolt fits my specific Kubota machine?
A: Provide your exact machine model (e.g., KX41-3 or ZD1021) and serial number if available — our technical team will verify compatibility and reply within 2 hours.
Q: What is the warranty period for this connecting rod bolt?
A: We provide a 6-month warranty against manufacturing defects, including free replacement if the bolt fails due to material or workmanship issues.
Q: What is the minimum order quantity?
A: MOQ is 1 piece — ideal for urgent repairs, testing, or small inventory replenishment.
Q: How long does shipping take?
A: In-stock items ship within 2–5 working days from Guangzhou. Express delivery reaches most destinations in 3–7 business days.
Q: Can I receive a sample before ordering in bulk?
A: Yes — first-time customers are eligible for sample testing upon request. Contact us via WhatsApp or email to arrange.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
