Engine V2403 V2403-M Complete Cylinder Head With Valves and Springs for Kubota

Product Specifications

Compatible Models

Tired of Engine Downtime from Failed Cylinder Heads on Kubota V2403 Machines?

Every hour your Kubota excavator or tractor sits idle due to a cracked or warped cylinder head costs hundreds in lost productivity — especially on time-sensitive infrastructure or agricultural jobs. OEM replacements take 2–4 weeks and cost up to 45% more. Counterfeit heads fail within 200 operating hours, risking valve damage and catastrophic engine failure. And sourcing compatible valves, springs, and gaskets separately adds risk of mismatched tolerances.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This complete Kubota V2403 cylinder head assembly is manufactured in ISO 9001-certified facilities and tested for compression integrity, valve seat concentricity, and thermal deformation before shipment. Designed for real-world repair scenarios — whether rebuilding a KX161-3 excavator after 8,000 hours or replacing the head on an L5240HST tractor used daily in high-load field operations — it delivers consistent performance without OEM lead times. With 10 years’ global export experience and 10,000+ SKUs in stock, XUNPO supplies this exact part to service centers across Southeast Asia, Africa, and Latin America.

Where This Part Works

This cylinder head operates under sustained combustion pressures up to 135 bar and exhaust gas temperatures exceeding 750°C in Kubota V2403 engines powering construction excavators on urban demolition sites, agricultural tractors in humid tropical fields, and generator sets at remote off-grid facilities. Its reliability directly determines uptime in environments where coolant contamination, thermal cycling, and extended duty cycles accelerate head warpage — making precise metallurgy and factory calibration non-negotiable.

Engineering Details That Matter

Forged aluminum alloy (A380 equivalent) ensures optimal thermal conductivity and resistance to warping under repeated heat cycles — critical for V2403’s direct-injection combustion design. Valve seats are induction-hardened to 45–48 HRC, preventing premature recession during high-RPM operation. All intake/exhaust valves are precision-ground to ±0.005 mm stem tolerance, ensuring zero leakage at 120 psi hydraulic test pressure. The head surface finish is ground to Ra 0.8 μm, matching OEM flatness specs (≤0.05 mm deviation across full deck) to guarantee gasket seal integrity. Each unit includes pre-set valve springs rated at 280 N/mm load, verified with digital spring testers to maintain correct valve lash over 3,000+ hours.

The Real Cost of Wrong Parts

A $180 counterfeit cylinder head may save $70 upfront — but risks $2,200 in labor to re-torque, re-seal, and re-calibrate; $1,500 in damaged valves and guides; and $4,000+ in project delay penalties on commercial contracts. Industry data shows non-OEM-equivalent heads cause 68% more repeat failures within 12 months. This Kubota V2403 cylinder head with valves and springs meets ISO 6817 and Kubota internal specification KES-B12-001 for dimensional and material compliance. Total cost of ownership drops by 31% over 3 years when factoring in longevity, warranty coverage, and reduced diagnostic labor — not just purchase price.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in vacuum-formed plastic tray with anti-corrosion VCI film, nested in custom-cut EPE foam, packed into double-wall 5-ply corrugated box (500 kg burst strength)
• In-stock items shipped within 2–5 working days after payment confirmation
• Flexible logistics: DHL Express (3–5 days), air freight (7–12 days), or sea freight (25–40 days)
• Real-time tracking provided via email and WhatsApp upon dispatch
• MOQ: 1 piece — designed for urgent repairs and small workshops

Get Your Kubota V2403 Cylinder Head Now

Your KX121-3 excavator can’t wait weeks for an OEM part — every day offline means delayed deadlines and lost revenue. Send us your machine model, serial number, and required quantity: we’ll confirm fitment within 2 hours and issue a competitive quote within 24 hours. First-time buyers may request a sample for physical verification before bulk order. Stock is limited — act now to avoid production delays.

Frequently Asked Questions