AS4021SS Hose
Find engine service parts by category and part number. Please provide the engine serial number and photographs of the existing component so fitment and supply origin can be verified before order.
AS4021SS Cummins Hose
- Material & Construction : Constructed with a high-grade synthetic inner tube (typically PTFE or fluoropolymer) reinforced with a outer stainless steel wire braid (SS), providing resistance against corrosion, abrasion, and mechanical wear.
- Operating Conditions : Designed to withstand severe engine bay temperatures (ranging up to 450°F / 232°C+) and sustained system operating pressures without swelling, cracking, or degrading.
- Fluid Compatibility : Ideal for high-demand engine fluids, including pressurized lube oil, diesel fuel lines, coolant feed/return lines, and turbocharger oil supply.
- Applications : Widely used across Cummins commercial diesel platforms (such as ISM, ISX, N14, and marine/industrial variants) where flexible, leak-proof connections are required between vibrating engine components and rigid piping.
The Cummins 4021SS hose (often designated by part number 4021SS or 3632337 / 4021SS variants) is a heavy-duty, high-performance flexible hose engineered primarily for high-temperature and high-pressure fluid transfer applications within Cummins diesel engine systems.
- Product reference
- AS4021SS
Ordering & compatibility
Before ordering
Provide the part number, engine model and serial number, required quantity and, if available, photos of the existing component so fitment can be checked.
Confirm the supply scope
Before ordering, confirm the part source and condition, fitment, packaging, lead time and delivery destination.
Discuss AS4021SS Hose
Share the destination, required quantity and part details.