Real Factory Common Rail Pipe C3936953 3975929 3977512 For Cummins 6L,ISLe

Designation C3936953-formally identified by Cummins as part number 3936953 and also referred to as the "Through Joint Body"-is a surface-hardened alloy union fitting that links the high-pressure fuel line to the injector receiving port. This component is employed across a broad family of Cummins in-line diesel engines, including the ISB 5.9 (applicable to CPL2906 and ISB-245 Encore variants), ISB6.7, QSB5.9, ISC 8.3, ISL 8.9, and 6L8.9. Typical vehicle and equipment applications span Dodge Ram 2500/3500 24V pickups, Dongfeng Tianlong L375 heavy trucks, and generator sets from the DCEC and CCEC ranges. One end terminates in a 24° flared seat, while the opposite side carries an M12-series male thread; sealing is accomplished via O-ring 3882589, distinguishing it from the copper crush-washer design used on C4931173. The overall length falls in the region of 94 mm. It is rated to withstand continuous pressure pulsing between 1600 and 1800 bar without measurable dimensional drift. This fitting performs no spraying, magnetic switching, or fuel metering function-its role is strictly that of a passive hydraulic passage. Sourcing equivalents include Cummins 3936953, C3936953, 3944833, 5013856AA, and the Dongfeng DCEC L375-series connector assembly.

Precisely configured fuel-distribution networks enable exact volume trimming, notably lowering rubbing wear on opposing faces over the full crankshaft revolution scale while preserving accumulated energy capacity during pier-adjacent holding intervals and cross-continental goods transit. Every manufacturing series endures rigorous fatigue examination at authorized research establishments to verify uniform flux rates, sound connection resilience, and repeatable output attributes, guaranteeing sustained service uniformity throughout uninterrupted elevated-output production phases. This versatile engineering solution ensures total parts swappability in full adherence to equipment-maker care guidelines, enabling prompt, straightforward unit changes without angular adjustments over scheduled servicing windows.

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