Mitsubishi 4D31 ME011045 ME999278 Gasket Kit for Kato HD250 Komatsu PC50 Excavator

Our premium Mitsubishi 4D31 Gasket Kit (OE: ME011045, ME999278, ME013299, MD012320) is engineered to meet OEM standards, available in high-quality metal (MLS/Multi-Layer Steel) and non-asbestos materials. It is specifically designed for medium-sized excavators equipped with Mitsubishi 4D31/4D31T 3.3L inline 4-cylinder diesel engines, delivering exceptional sealing performance, heat resistance up to 220℃/428℉, and durability. It effectively maintains optimal engine compression, prevents oil, coolant, and combustion gas leaks, and adapts to harsh heavy-duty environments such as construction, light mining, and landscaping.

The Mitsubishi 4D31 Gasket Kit (OE: ME011045, ME999278, ME013299, MD012320) is a high-performance sealing solution specifically designed for medium-sized excavators powered by Mitsubishi 4D31/4D31T 3.3L inline 4-cylinder diesel engines. Crafted with premium metal MLS or non-asbestos aramid fiber materials, it meets strict OEM standards, featuring excellent heat resistance and sealing performance—critical for maintaining engine stability in construction and light mining operations. As a direct drop-in replacement for OEM parts, it requires no modifications, ensuring quick and easy installation for mechanics and equipment owners, while its durable construction extends the service life of excavator engines and reduces maintenance costs. It is fully compatible with Kato, Komatsu, Sumitomo, Cater pillar, Daewoo excavators and other 4D31-engine equipped machinery, solving common sealing issues effectively.

• Dual Material Options: Metal MLS for high-pressure heavy-duty use; Non-asbestos for optimal conformity, fitting both new and older 4D31 engine models
• Perfect Fit: Precisely manufactured to match Mitsubishi 4D31 engine dimensions, 100% compatible with Kato HD250/HD510, Komatsu PC50/PC60 and other 4D31-equipped excavators
• Superior Sealing: Leak-free performance for combustion chambers, oil and coolant systems, maintaining optimal engine compression (17.5:1) and preventing costly engine damage
• Versatile Compatibility: Suitable for medium-sized excavators, light construction machinery and Mitsubishi Fuso Canter, ideal for multi-scene maintenance needs
• Easy Installation: Direct OEM replacement, no modifications needed, saving time and labor costs for engine repair and overhaul projects
• Complete OE Cross-Reference: Multiple compatible OE numbers, convenient for customers to match original parts and place orders quickly

100% compatible with:

• Mitsubishi 4D31, 4D31T Inline 4-Cylinder Diesel Engines (3.3L displacement, 98mm*105mm bore&stroke)
• Kato HD250, HD510, HD400, HD450 Excavators
• Komatsu PC50, PC60, PC80 Excavators
• Sumitomo SH45U, SH145U; Cater pillar E70, E110; Daewoo DH450 Excavators
• Mitsubishi Fuso Canter, Light Construction Machinery, Small Mining Equipment (equipped with 4D31 engine)

Every Mitsubishi 4D31 Gasket Kit undergoes strict quality control checks, including dimension verification (±0.02mm tolerance), heat resistance testing, pressure testing (1100 psi), and sealing performance testing, ensuring consistent performance and leak-free operation. Compliant with ISO 9001 and TS 16949 standards, it is a trusted choice for professional mechanics, excavator fleet operators and repair shops worldwide, meeting OEM specifications for perfect fit and long-lasting durability. The dual-material design caters to different market demands, while the complete OE cross-reference table simplifies the ordering process for customers.