Description
Stop Lethal Fuel Leaks and Protect Your V16 Investment: The 4956061 Solution
Product Specifications
| Specification | Details |
| Product Name | Fuel System Gasket Kit / Injector & Rail Seal Set |
| OEM Part Number | 4956061 |
| Engine Compatibility | Cummins QSK50 (V16 Quantum Series) |
| Brand | VPGASKET |
| Material Technology | High-Grade Viton (FKM), Reinforced Elastomers |
| Application | High-Pressure Fuel Rail and Injector Systems |
| Condition | 100% Brand New Premium Aftermarket Replacement |
Why the 4956061 Kit is Your Only Defense Against Fuel Contamination
The Cummins QSK50 utilizes a sophisticated high-pressure fuel system that operates at staggering intensities to deliver 50 liters of raw power. In this environment, a single compromised seal in the fuel circuit is more than just a leak—it is a fire hazard and a precursor to engine-killing fuel dilution. The 4956061 fuel system gasket kit is engineered to lock down these critical interfaces. Utilizing industrial-grade Viton materials, these seals are specifically formulated to remain elastic and chemically stable when exposed to high-pressure diesel, ensuring your V16 remains safe and efficient under maximum load.
Eliminate the Nightmare of Fuel-in-Oil Dilution
In the high-stakes sectors of maritime transport and deep-pit mining, oil quality is the lifeblood of your operation. A failure in the injector O-rings or rail seals can allow diesel to seep into the lubrication system, thinning the oil and causing rapid bearing wear. The 4956061 overhaul set from VPGASKET provides an impenetrable barrier. Our components are rigorously tested to withstand the violent harmonics of the V16 block, ensuring that the 4956061 seals do not shrink or harden, even after thousands of hours of 24/7 industrial duty.
Inside the 4956061 Kit: The Professional Arsenal for Fuel Integrity
Securing the fuel architecture of a QSK50 requires a comprehensive, unified sealing strategy. This complete kit provides every essential component required for a “first-time-right” fuel system service:
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High-Pressure Injector O-Rings: Multi-stage Viton rings designed to seal the injector body against high-combustion heat and high-pressure fuel.
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Fuel Rail and Connector Seals: Precision-molded gaskets that maintain the integrity of the common rail interfaces.
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Return Line Gaskets: Robust seals that ensure the fuel return circuit remains leak-free and environmentally compliant.
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Filter and Pump Interface Seals: Custom-contoured gaskets to secure the low and high-pressure transfer points against vibration-induced loosening.
Professional Installation Standards for High-Pressure Systems
To ensure the 4956061 fuel system kit provides a permanent, leak-proof seal, technicians must prioritize these strict B2B assembly protocols:
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Surgical Cleanliness: Fuel systems are intolerant of debris. Ensure the work area and all fuel ports are surgically clean before opening the 4956061 kit. Even a microscopic speck of grit can cause an injector to hang open.
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Lubrication Policy: Always use a light coating of clean diesel or approved assembly lube on O-rings during installation. This prevents the “rolling” or “shearing” of the Viton material as components are seated.
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Visual Inspection of Bores: Before installing new seals, inspect the injector bores and rail seats for pitting or scoring. A new 4956061 gasket cannot compensate for damaged metal surfaces.
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Precise Torque Values: Strictly follow the Cummins service manual for fuel rail and injector hold-down torque. Over-tightening can crush the seals, while under-tightening leads to high-pressure blowouts.





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