3643725 Valve Spring For Cummins K And QSK Series Engines

Product Overview:

3643725 is Cummins newest valve spring for all KTA/QSK engines, superseding all older spring codes. Made of vanadium-niobium microalloy chrome-silicon steel with full nitriding for ultra-long durability. Specially reinforced for continuous heavy loads, ideal for mining trucks, ocean vessels, oil equipment and 24h full-load gensets, direct plug-and-play replacement with zero modification.

3643725 valve spring Specification:

Application:

✅Mining Equipment: 100-ton haul trucks, large mining loaders & excavators for open-pit mines

✅Marine Vessels: Ocean-going cargo ships, offshore platform auxiliary engines, ocean tugs & FPSO power units

✅Oil & Gas Machinery: Fracturing trucks, drilling rig gensets, well service pump engines for 24/7 full-load operation

✅Prime Power Gensets: Continuous-duty power stations, data center main power, mine off-grid generators

Why Choose Us?

✅100% Genuine Parts: Directly supplied by CCEC with official certification

✅Wholesale Discounts: Tiered pricing for bulk orders and long-term cooperation

✅Professional Support: Free technical guidance from certified engineers

✅Fast Global Delivery: 24h dispatch, worldwide shipping in 3-15days