Kubota D1403 D1503 D1703 D1803 V1903 V2403 Intake 1G852-13122 & Exhaust Valve 1G852-13121 Engine Parts

Product Details

Product Overview

Upgrade your Kubota diesel engine with our premium intake and exhaust valve set, designed for high-demand industrial and agricultural applications. These replacement valves, featuring OEM numbers 1G852-13122 (Intake) and 1G852-13121 (Exhaust), are engineered to restore compression, reduce emissions, and extend engine life. We supply global markets including North America, Europe, Southeast Asia, and the Middle East, ensuring fast shipping to major ports and distribution hubs worldwide. Ideal for maintenance workshops, equipment dealers, and fleet operators seeking reliable, cost-effective OEM-quality components.

Key Features & Benefits

• Premium Material Composition: Forged from heat-resistant steel alloy, ensuring superior strength and thermal stability under extreme combustion temperatures.
• Precision Engineering: CNC-machined stems and faces for perfect seating and optimal gas flow, reducing fuel consumption and improving horsepower.
• Long Service Life: Chrome-plated stems and hardened tips minimize wear, providing up to 50% longer lifespan compared to standard aftermarket parts.
• Direct Fit Replacement: 100% interchangeable with OEM Kubota parts, requiring no modification for seamless installation.
• Strict Quality Control: 100% inspected for dimensional accuracy, surface finish, and hardness to meet or exceed SAE and ISO standards.

Technical Specifications

OEM Cross-Reference

These valves are direct replacements for the following genuine Kubota and aftermarket OEM numbers:

• Intake Valve: 1G852-13122, 1G852-13120, 1G852-13220
• Exhaust Valve: 1G852-13121, 1G852-13110, 1G852-13210
• Set Equivalent: 1G852-13190 (Valve Set)

Compatibility

Compatible Engine Models (Kubota):

• D-Series: D1403, D1503, D1703, D1803
• V-Series: V1903, V2003, V2203, V2403
• Additional Models: V1902, V2002, V2202, D1402, D1502, D1702

Common Applications: Kubota tractors (L, M, B, G series), excavators (KX, U series), generators, and industrial engines (1985-2015). Always verify your engine serial number for exact fitment.

Global Supply & Distribution

We maintain a robust global logistics network to serve B2B clients efficiently:

• Shipping Hubs: Warehouses in Shanghai, Singapore, Rotterdam, and Los Angeles for rapid dispatch.
• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, France), Asia-Pacific (Japan, Australia, Korea), Middle East (UAE, Saudi Arabia), and South America (Brazil, Argentina).
• Delivery Options: Express (3-7 days via DHL/FedEx), Air Freight (5-10 days), and Sea Freight (20-35 days) for bulk orders.
• Trade Compliance: Full customs documentation, including COO, packing lists, and commercial invoices for hassle-free import.

Quality Assurance

• Certifications: ISO 9001:2015, TS 16949 (for automotive-grade quality).
• Testing: 100% dimensional inspection using CMM, hardness testing (Rockwell), and leak-down testing for valve seal integrity.
• Warranty: 12 months against manufacturing defects from date of purchase. Covers material flaws and premature wear under normal operating conditions.

FAQ

1. Is this valve set a direct replacement for my Kubota D1803 engine?

Yes, these valves are designed as direct drop-in replacements for Kubota D-Series and V-Series engines, including the D1803. The dimensions (head diameter, stem diameter, overall length) match OEM specifications exactly. However, we recommend checking your engine’s serial number and comparing it to our compatibility list to ensure correct fitment.

2. What is the recommended installation procedure for these valves?

Installation requires standard engine overhaul tools. Key steps include: (1) Clean valve guides and seats thoroughly, (2) Apply molybdenum disulfide paste to stems, (3) Use a valve spring compressor to install springs and retainers, (4) Adjust valve clearance to 0.20mm (intake) and 0.25mm (exhaust) per Kubota specs. Always replace valve stem seals simultaneously for best results.

3. Can these valves withstand high-temperature turbocharged applications?

Yes. The exhaust valve features a Stellite coating on the face, which provides excellent resistance to thermal fatigue and oxidation at temperatures up to 800°C. The 21-4N stainless steel material offers superior creep strength, making these valves suitable for both naturally aspirated and turbocharged Kubota engines in demanding applications like generators and excavators.