<p>Stop cylinder head leaks and prevent costly engine failure with the genuine-spec <strong>Kubota cylinder head bolt set</strong> — engineered to match OEM torque retention and thread pitch for D662–DG972 engines. Unlike generic bolts that stretch or strip under thermal cycling, these are heat-treated Grade 10.9 fasteners with precise 1.5mm pitch and rolled threads — a detail critical for maintaining clamping force across 10,000+ operating hours.</p> <ul> <li>Fits 14+ Kubota engine variants including D662, DG972, DF972, and D722-BH-4/E2-BH-6 — no guesswork on cross-compatibility</li> <li>Includes all 14 bolts with correct lengths and shoulder specs: 14601-03450 (short), 14601-03452 (medium), 14601-03453 (long), and 1J080-03450 (special-length)</li> <li>Ready to ship same-day from our Guangzhou warehouse — no waiting weeks for OEM backorders</li> <li>Each set is pre-sorted, labeled, and packed with torque sequence guidance for first-time installers</li> </ul>
| Parameter | Details |
|---|---|
| Part Name | Cylinder Head Bolt Set |
| Part Number (OEM Reference) | 14601-03450, 14601-03452, 14601-03453, 1J080-03450, 1460103450, 1460103452, 1460103453, 1J08003450 |
| Brand Compatibility | Kubota |
| Machine Model Fitment | 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, 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, GF1800, GF1800E, GL-3500, GL11000, GL14000, U10-5, U15, U17, K-008, K008-3(KTC/KCL), K008-5, KH-007H, KX018-4, KX41-3, 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, SCL1000, ZD1011, ZD1011-3, ZD1021, ZD1021-3, ZD18, ZD18F, ZD21, ZD21F, ZD221, ZD321, ZD321N, ZD323, ZG332LP, ZG332P, ZP330LP, ZP330P |
| Engine Fitment | D662, D722, D782, D902, DF752, DF972, DG972, D482-EB-A.TECNO-1, D722-B, D722-EKB-CHI-1, D722-BH-3/E2-BH-5, D722-BH-4/E2-BH-6, D722-B-GENSET-2-S1, D782-EB-AEBI-1, D902-E2B-AUSA-1, D902-E3B-CWL-1, D902-BH |
| Material | High-tensile alloy steel, heat-treated to ISO 898-1 Class 10.9 |
| Quantity per Set | 14 pieces |
| Condition | New Aftermarket |
| Warranty | 6-month warranty against manufacturing defects |
| Packaging | Individual protective packaging with anti-rust film, sealed in reinforced corrugated box |
| Brand | Applicable Models |
|---|---|
| Kubota | 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 |
Every unscheduled engine shutdown on a Kubota-powered tractor or excavator costs operators hundreds — often thousands — of dollars per hour in lost productivity and labor. Counterfeit or low-grade cylinder head bolts lose clamping force under thermal cycling, leading to head gasket failure, coolant leaks, and catastrophic engine damage. OEM parts take 3–4 weeks to arrive, halting field operations during peak season.
This 14-piece Kubota cylinder head bolt set is manufactured in ISO 9001-certified facilities and subjected to 100% pre-shipment torque and tensile testing. Designed for critical engine rebuilds on Kubota D662–DG972 engines, it delivers consistent clamping load across all 14 positions — essential for maintaining cylinder sealing integrity during extended digging, grading, or generator duty cycles. With 10 years of global export experience and 10,000+ SKUs in stock, XUNPO ensures technical accuracy and rapid fulfillment for urgent maintenance needs.
These bolts are installed in high-stress environments: agricultural tractors operating 12+ hours daily in dusty, humid fields; compact excavators performing demolition in urban sites; and portable generators powering remote construction camps. Under continuous thermal expansion/contraction and vibration, only precision-machined, heat-treated fasteners maintain proper preload — preventing combustion gas blow-by and oil contamination. Kubota engine head bolts must withstand peak cylinder pressures up to 130 bar and exhaust temperatures exceeding 700°C.
Each bolt is forged from high-tensile alloy steel meeting ISO 898-1 Class 10.9 specifications — minimum tensile strength 1000 MPa, yield strength 900 MPa. Threads are rolled after heat treatment to preserve grain flow and fatigue resistance. Surface finish is black oxide with supplementary rust-inhibiting oil, tested to 96-hour salt-spray per ASTM B117. Dimensional tolerances comply with ISO 4759-1 for pitch diameter and thread runout, ensuring perfect interchangeability with original equipment. Bolt length and shoulder geometry match OEM specs exactly to avoid interference with cylinder head water jackets or valve train components.
A $5 counterfeit bolt can trigger a $2,800 cylinder head repair — plus 3 days of machine downtime. Low-grade bolts stretch prematurely, causing uneven head loading that cracks aluminum heads or warps cast-iron surfaces. Replacing failed gaskets, machining warped surfaces, and recalibrating valve clearances multiplies labor cost by 5x. When you factor in delayed project timelines, penalty clauses, and customer trust erosion, the total cost of ownership (TCO) of inferior Kubota engine head bolts exceeds OEM-equivalent pricing within just two service intervals. Our 6-month warranty covers replacement and freight — no questions asked — because we engineer for reliability, not just compliance.
Only ISO 9001-certified factories supply our Kubota cylinder head bolt sets — every batch undergoes incoming material certification and hardness verification. Each set is 100% performance-tested for torque yield and elongation before shipment. We offer a 6-month warranty covering manufacturing defects, with no restocking fees. Our 10-year export track record spans 120+ countries, supported by 20+ technical specialists who verify part compatibility within 2 hours. Guangzhou warehouse holds over 10,000 commonly used parts, enabling 2–5 working day dispatch for in-stock items like this 14-piece Kubota cylinder head bolt set.
Your Kubota D662 or DG972 engine shouldn’t wait weeks for critical fasteners. Send us your part number, machine model, and required quantity — we’ll issue a competitive quotation within 24 hours. First-time buyers may request a sample set for physical verification and fit testing. With stock ready in Guangzhou, your order ships fast to keep equipment running and projects on schedule.
Q: Is this an original Kubota part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket part, manufactured in ISO 9001-certified facilities to match original Kubota specifications for material, dimensions, and mechanical properties.
Q: How do I confirm if these bolts fit my specific Kubota machine?
A: Provide your exact machine model (e.g., BX2370 or U15) and engine serial prefix — our technical team will verify compatibility and respond within 2 hours.
Q: What is the warranty period for this Kubota cylinder head bolt set?
A: We offer a 6-month warranty against manufacturing defects, including free replacement and return shipping for confirmed quality issues.
Q: What is the minimum order quantity?
A: MOQ is 1 set — no bulk requirement. Ideal for emergency replacements or small workshops.
Q: How soon can I receive the bolts after placing an order?
A: In-stock orders ship within 2–5 working days. Express courier options deliver to most destinations in 3–7 business days.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time clients may request one sample set for physical inspection and installation validation at no cost beyond standard shipping.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 13316055942 | Email: talos@xunpojx.com
Parts available for all major excavator and heavy equipment brands
Guangzhou's trusted excavator parts supplier since 2015
8 core categories for all major brands
Fast dispatch from Guangzhou warehouse
Professional team for part verification
Global shipping with real-time tracking
Get your Kubota M8200 or M9000 tractor back in full power—fast—with an...
View Details
Get your Kubota V2203 back online faster with OEM-equivalent reliability — no...
View Details
Get your Kubota D782-powered equipment back online fast—no more waiting weeks for...
View Details
Get your Kubota back online faster — no more waiting weeks for...
View DetailsOur experts are available 24/7 -- get a response within 2 hours.
