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Product Details
Product Overview
These premium intake and exhaust valves are precision-engineered for Cummins heavy-duty 24V diesel engines, specifically the X15, ISX15, and QSX15 platforms. As a critical component of the cylinder head assembly, this valve set ensures optimal engine breathing, combustion efficiency, and long-term reliability. Sourced from high-quality manufacturing partners, these parts are designed to meet or exceed OEM specifications, making them an ideal choice for maintenance, overhaul, and rebuild projects. We serve a global B2B clientele, with major markets in North America, Europe, the Middle East, and Asia-Pacific, ensuring fast and reliable shipping to industrial centers worldwide.
Key Features & Benefits
OEM Standard Fitment: Manufactured to precise tolerances for direct replacement without modification, ensuring a perfect seal and valve train geometry.
High-Temperature Alloy Construction: Built from premium heat-resistant steel alloys to withstand extreme combustion chamber temperatures and pressures, preventing warping and premature failure.
Enhanced Durability: Features a hardened tip and a durable stem coating to reduce friction against the valve guide, minimizing wear and extending engine service life.
Improved Engine Performance: Optimized design for superior gas flow, contributing to better fuel economy, increased horsepower, and reduced emissions in your Cummins engine.
Rigorous Quality Control: Each valve undergoes strict inspection for dimensional accuracy, surface hardness, and material integrity to ensure consistent, reliable performance.
This valve set replaces the following original equipment manufacturer (OEM) numbers. Please verify your engine’s specific requirements before purchase.
Intake Valve: 4965868, 3685996
Exhaust Valve: 4101454, 3686661
Compatibility
These valves are specifically designed for use in the following Cummins engine families. They are a direct fit for the cylinder head valve train system.
Engine Models: Cummins X15, ISX15, QSX15
Engine Series: 24V (24-Valve) Heavy-Duty Platform
Common Applications: Kenworth T680/T880, Peterbilt 579/389, Freightliner Cascadia, International LT Series, Volvo VNL (with Cummins engine), and various industrial/marine applications using the X15 engine platform.
Global Supply & Distribution
We provide a reliable supply chain for B2B customers worldwide. Our logistics network ensures your order is processed and shipped efficiently.
Worldwide Shipping: We offer comprehensive shipping options via sea, air, and express courier (DHL, FedEx, UPS) to meet your delivery timeline.
Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), South America (Brazil, Chile), Middle East (UAE, Saudi Arabia), Asia-Pacific (Australia, Singapore, China).
Fast Delivery: Stock items are dispatched within 24-48 hours, with expedited shipping available to major ports like Los Angeles, Rotterdam, Shanghai, and Jebel Ali.
Trade Compliance: We have extensive experience in international trade, handling all necessary customs documentation for smooth clearance.
Quality Assurance
Manufacturing Standards: Produced in ISO 9001 certified facilities, ensuring strict quality control throughout the production process.
Warranty: We stand behind the quality of our parts. A standard warranty against manufacturing defects is included. Please contact us for specific warranty terms.
Testing: Each batch is tested for dimensional accuracy, material hardness, and surface finish to guarantee a reliable, long-lasting product.
FAQ
Q1: How do I confirm that these valves (4965868 & 4101454) are the correct ones for my ISX15 engine?
A: To ensure a proper fit, please cross-reference the part number stamped on your existing valve with our listed numbers (4965868/3685996 for intake and 4101454/3686661 for exhaust). It is also critical to check your engine’s serial number (ESN) and the cylinder head casting number to confirm the specific valve size and keeper groove configuration used in your engine build.
Q2: Should I replace the valve guides and seals when installing new intake and exhaust valves?
A: Yes, it is highly recommended. When replacing valves, the valve guides and seals are typically worn and can lead to oil consumption and poor sealing if reused. We strongly advise performing a full cylinder head service, including replacing the valve guides, valve stem seals, and valve keepers (collets) to ensure a complete and reliable overhaul.
Q3: What is the recommended maintenance interval for these valves on a Cummins X15 engine?
A: Valve inspection and adjustment are typically part of the standard engine maintenance schedule. However, the valves themselves are designed to last the life of a major overhaul cycle (often 500,000 to 1,000,000 miles in on-highway applications). They should only be replaced if there is evidence of wear, pitting, burning, or if the valve margin has worn below the manufacturer’s service limit during an inspection.
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