Product Specifications
| Parameter | Details |
|---|
| Part Name | Cylinder Head Bolt Set |
| Part Number (OEM Reference) | 14601-03450, 14601-03452, 14601-03453, 1J080-03450 |
| Brand Compatibility | Kubota |
| Machine Model Fitment | D662, D722, D782, D902, DF752, DF972, DG972, and compatible Kubota tractors, lawn tractors, generators, excavators, utility vehicles, compact loaders, and zero-turn mowers (full list below) |
| Material | High-tensile forged steel, ISO 898-1 Class 10.9 |
| Quantity per Set | 14 pcs |
| Condition | New aftermarket, OEM-equivalent |
| Warranty | 6-month warranty against manufacturing defects |
| Packaging | Original sealed polybag with printed part numbers, packed in reinforced corrugated box |
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 |
| Kubota Lawn Tractor | G1700, G1800, G1800-S, G1900, G1900-S, G2000, G2000-S, G2160, G2160AU, G2160-DS, G2460G, G3200, G4200, G4200H, G5200H, G-5500S, G6200H, GR2100, GR2110, GR2120, GR2120-2, GR2120B, GR2120B-2, T1600H, T1600H-EUROPE, T1600H-G, TG1860 |
| Kubota Front-Mount Tractor | GF1800, GF1800E |
| Kubota Generator | GL-3500, GL11000, GL14000 |
| Kubota Excavator | U10-5, U15, U17, K-008, K008-3(KTC/KCL), K008-5, KH-007H, KX018-4, KX41-3 |
| Kubota Utility Vehicle | RTV900G, RTV900G6, RTV900G9, RTV900R6, RTV900R9, RTV900R-SD/R-SDL, RTV900T, RTV900T5-H/T2, RTV900T6, RTV900T9, RTV900W, RTV900W6, RTV900W6SE, RTV900W8SE, RTV900W9, RTV900W9SE, RTV900XTG, RTV900XTR, RTV900XTS, RTV900XTT, RTV900XTW, RTV-X900G, RTV-X900R, RTV-X900W |
| Kubota Stand-On Compact Loader | SCL1000 |
| Kubota Zero-Turn Mower | ZD1011, ZD1011-3, ZD1021, ZD1021-3, ZD18, ZD18F, ZD21, ZD21F, ZD221, ZD321, ZD321N, ZD323, ZG332LP, ZG332P, ZP330LP, ZP330P |
Tired of Cylinder Head Bolt Failure on Kubota D662–DG972 Engines?
Every unscheduled engine shutdown costs operators $1,200–$3,500/day in idle labor, rental fees, and missed deadlines. Counterfeit or low-grade cylinder head bolts stretch under thermal cycling, causing head gasket blowouts, coolant leaks, and catastrophic engine failure. OEM replacements take 3–4 weeks to arrive — halting critical maintenance during peak season.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
This 14-piece Kubota cylinder head bolt set delivers consistent clamping force across full operating temperature range (–20°C to +150°C), verified by pre-shipment torque and tensile testing. Built for heavy-duty applications including excavation, agricultural tilling, and generator duty cycles, it replaces 14601-03450 / 14601-03452 / 14601-03453 / 1J080-03450 across Kubota’s D662–DG972 engine family. Backed by 10 years of global export experience and 10,000+ SKUs in stock, we ship verified parts within 2–5 working days.
Where This Part Works
These bolts secure the cylinder head on Kubota engines powering equipment in high-vibration, high-dust environments: construction sites with daily 12-hour operation, quarrying applications with continuous load cycling, port material handlers exposed to salt air, and municipal snow removal fleets operating at sub-zero temperatures. In such conditions, inconsistent bolt yield strength or thread integrity directly compromises combustion chamber sealing — making precision-engineered fasteners non-negotiable.
Engineering Details That Matter
Each bolt is forged from SCM435 alloy steel, quenched and tempered to 10.9 tensile class (minimum tensile strength 1000 MPa, yield strength ≥ 900 MPa). Threads are rolled after heat treatment — preserving grain flow and increasing fatigue resistance by 30% vs cut threads. Surface finish meets ISO 4042 with black oxide coating (≥ 48hr salt spray resistance) to prevent galvanic corrosion when mated with aluminum cylinder heads. Dimensional tolerance is held to ±0.05 mm on shank diameter and pitch diameter — ensuring full interchangeability with OEM assemblies without reaming or modification.
The Real Cost of Wrong Parts
A $2.50 counterfeit bolt may save $15 upfront — but causes $2,800 in labor to replace a blown head gasket, $1,100 for coolant system flush, and $4,200 in downtime for a single-day delay on a municipal road repair contract. Our Kubota D662–DG972 cylinder head bolt kit complies with ISO 898-1 and meets Kubota’s original torque specification (78–82 N·m dry, no lubricant). Total cost of ownership drops 41% over 3 years compared to repeated failures from substandard fasteners — verified across 2,300+ field installations since 2022.
Why Customers Trust XUNPO
We source exclusively from ISO 9001-certified forging facilities with full traceability to raw material heats. Every batch undergoes incoming inspection for chemical composition (spectrometry) and hardness (Rockwell C). Before shipment, 100% of bolt sets pass torque verification and proof-load testing at 120% of rated yield. All units carry 6-month warranty covering replacement and return shipping for manufacturing defects. With 10 years’ experience serving 120+ countries, our 20-person technical team confirms part compatibility within 2 hours. Over 10,000 SKUs are held ready in our Guangzhou warehouse — enabling same-day dispatch for urgent repairs.
Packaging & Shipping
- Individually sealed in static-resistant polybags with printed OEM part numbers; packed in double-walled corrugated box with molded EPS foam inserts
- In-stock items shipped within 2–5 working days after order confirmation
- Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — selected per customer requirement
- Real-time tracking provided from warehouse dispatch to final delivery
- MOQ: 1 piece — supporting emergency field repairs and small workshops
Get Your Kubota Cylinder Head Bolt Set Now
Your excavator or tractor isn’t generating revenue while waiting for parts. Send us your machine model (e.g., Kubota U15 or BX2370) and quantity — we’ll reply with a formal quote within 24 hours. First-time buyers can request a sample for physical verification before bulk ordering. Stock is available today; your order ships tomorrow.
Frequently Asked Questions
Q: Is this an original Kubota part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket cylinder head bolt set, manufactured in ISO 9001-certified factories to match Kubota’s dimensional, material, and performance specifications.
Q: How do I confirm if these bolts fit my specific Kubota engine model?
A: Provide your exact engine model (e.g., DG972 or D662-BH) or machine serial number — our technical team verifies compatibility and replies within 2 hours.
Q: What is your warranty policy on this bolt set?
A: 6-month warranty covering manufacturing defects. If a bolt fails due to material or workmanship fault, we replace it free of charge with return shipping covered.
Q: What is the minimum order quantity?
A: 1 piece — no minimum. Ideal for urgent maintenance, small workshops, or sample validation.
Q: How long does shipping take?
A: In-stock items ship within 2–5 working days. Express options (DHL/FedEx) deliver to North America/Europe in 3–6 business days; air freight and sea freight timelines vary by destination.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time customers may request one sample set for physical testing and fit verification prior to bulk purchase.
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
