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Product Specifications

Compatible Models

Tired of Cylinder Head Failures on Your Kubota BX23S or KX41-3? Get the D902 Cylinder Head with Gasket Kit That Fits Right and Lasts

Every unplanned engine shutdown on a Kubota BX23S tractor or KX41-3 excavator costs operators hundreds to thousands in lost productivity — especially during peak season. Counterfeit or poorly cast cylinder heads crack under thermal cycling, leak compression, or fail valve seats prematurely. OEM replacements take 3+ weeks and cost up to 45% more, delaying critical field work.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This D902 cylinder head assembly is manufactured in ISO 9001-certified facilities with strict incoming material inspection and pre-shipment performance testing. Designed for real-world use in Kubota D902-powered equipment — including high-duty-cycle applications like loader operation, trenching, and zero-turn mowing — it delivers consistent combustion chamber integrity and valve train alignment. With 10 years of global export experience and 10,000+ SKUs in stock, XUNPO supplies verified replacement parts to repair shops and fleet operators across North America, Europe, and Southeast Asia.

Where This Part Works

This cylinder head operates under full-load thermal stress in compact tractors used for municipal landscaping, excavation support on construction sites, and material handling at ports. In Kubota KX41-3 mini-excavators, it endures frequent cold starts, rapid load changes, and vibration-induced fatigue. For Scag and Kanga equipment, reliable sealing and dimensional stability are essential to prevent coolant-oil mixing and loss of hydraulic assist pressure — making correct part selection non-negotiable.

Engineering Details That Matter

The cylinder head is precision-machined from high-strength gray cast iron (ASTM A48 Class 30), ensuring optimal heat dissipation and resistance to warping at sustained 180°C exhaust port temperatures. All valve seat inserts are induction-hardened to 45–48 HRC, matching OEM wear resistance and extending service life beyond 4,500 operating hours. Surface finish on the deck is maintained at Ra ≤ 1.6 μm to guarantee uniform gasket compression with the included multi-layer steel (MLS) gasket kit. Critical bolt hole threads meet ISO 5211 standards for torque retention, and coolant passages are flow-tested at 1.2 bar to eliminate internal casting porosity.

The Real Cost of Wrong Parts

A $79 discount cylinder head may save upfront but often fails within 300 hours due to incorrect valve guide interference or insufficient tensile strength — triggering secondary damage to pistons, connecting rods, and turbochargers. Industry data shows that using non-OEM-equivalent cylinder heads increases total repair cost by 2.3× over 12 months when factoring labor, downtime, and rework. This D902 cylinder head meets ISO 9001 production controls and conforms to Kubota’s dimensional and material specifications (JIS G5501), delivering true TCO advantage — not just lower sticker price. Kubota D902 engine head assembly reliability directly impacts uptime in time-sensitive operations like rental fleet maintenance and public works contracts.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually wrapped in anti-static foam, sealed in a rigid double-wall corrugated box labeled with part number and compatibility
• In-stock items ship within 2–5 working days after order confirmation
• Flexible logistics: DHL/FedEx/UPS express (3–7 days), air freight (7–12 days), or sea freight (25–40 days)
• Real-time tracking provided from warehouse dispatch to final delivery
• Minimum order quantity: 1 piece — no bulk requirement for urgent repairs

Get Your D902 Cylinder Head Now

Your Kubota BX23S or KX41-3 can’t wait weeks for an OEM part — and neither should your project schedule. Send us your machine model, current part number (e.g., 1G962-03042), and required quantity. You’ll receive a competitive quote within 24 hours. First-time buyers may request a sample for physical verification before placing a full order. Every day your engine stays down is revenue lost — act now.

Frequently Asked Questions