D902 D902-E2B D902-E3B D902-E4B Cylinder Head for Kubota Engine

Product Specifications

Compatible Models

Tired of Cylinder Head Failures on Your Kubota RTV900 or BX Tractor?

One cracked cylinder head can halt utility vehicle operations for days — costing hundreds in labor and lost productivity. Many operators face repeated failures after installing low-cost aftermarket heads that lack proper heat treatment or material traceability. OEM replacements mean waiting 3 weeks and paying up to 45% more — all while your RTV900 or BX2370 sits idle.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This D902 cylinder head is manufactured in ISO 9001-certified facilities and undergoes full functional testing before dispatch — matching original Kubota performance under real load conditions. With 10 years’ experience supplying Kubota engine components globally, we’ve verified fitment across 40+ RTV and BX models, including RTV900G, BX2370, and BX2380. Every unit is inspected for combustion chamber geometry, valve seat concentricity, and surface finish tolerance — critical for compression integrity and thermal stability during extended operation.

Where This Part Works

This D902 cylinder head supports demanding applications: agricultural field work under dust and temperature extremes, municipal fleet maintenance at public works depots, and utility transport on rough terrain. In RTV900G and BX2380 service, it withstands continuous 2,800 rpm operation, peak combustion pressures up to 130 bar, and thermal cycling between –20°C and +110°C. Choosing the correct D902 engine head directly impacts engine longevity, fuel efficiency, and cold-start reliability — especially in high-humidity environments like Southeast Asia or coastal ports.

Engineering Details That Matter

Each D902 cylinder head is cast from high-silicon aluminum alloy (A380 equivalent), offering optimal thermal conductivity and dimensional stability versus standard A360. Valve seats are induction-hardened to 45–48 HRC, ensuring resistance to recession under prolonged use with diesel fuel. Combustion chamber volume is held within ±1.2 cc tolerance to maintain OEM compression ratio (22.5:1). All machined surfaces meet Ra ≤ 1.6 μm finish, preventing gasket blowout under torque spec (65 N·m). Threaded inserts for glow plugs and injectors are installed using torque-controlled threading tools to eliminate cross-threading risk during field installation.

The Real Cost of Wrong Parts

A $75 counterfeit D902 cylinder head may fail within 200 operating hours — triggering head gasket failure, coolant contamination, and piston scoring. That single failure often leads to $2,100+ in labor, $1,300+ in collateral parts, and 3–5 days of downtime. By contrast, our Kubota D902 cylinder head OEM replacement meets ISO 8573-1 Class 2 air purity standards for machining and is tested to SAE J1330 pressure specifications. Total cost of ownership drops 37% over 2 years when factoring in uptime, warranty coverage, and reduced rework — not just unit price.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in static-resistant plastic, cushioned with custom-cut EPE foam, and packed in double-walled 5-ply corrugated export cartons
• 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 via email and WhatsApp upon dispatch
• MOQ is 1 piece — supporting urgent repairs and pilot validation

Get Your D902 Cylinder Head Now

Your Kubota RTV900 or BX2370 shouldn’t wait weeks for a reliable cylinder head. Send us your exact model (e.g., RTV900W9 or BX2380), quantity needed, and destination country — we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample for physical verification before bulk order. Every day your machine sits idle costs money; act now to restore full operational readiness.

Frequently Asked Questions