Cummins engine spare parts oil filter C4327369 FS36259 in stocked

Equipped with a multi-layer glass fiber-polyester media (60% glass fiber, 40% polyester) and a 10-micron absolute filtration rating, the filter captures 99.8% of contaminants in engine oil—including metal shavings, carbon deposits, and dust particles that cause abrasive wear to critical components (crankshaft bearings, camshaft lobes). The media features a deep-pleat design (180 pleats, 0.3mm pleat spacing) that boosts dirt-holding capacity to 180g (exceeding Cummins’ requirement of 150g) and extends service intervals to 25,000 km (or 500 operating hours) for heavy-duty applications. It also maintains a low pressure drop (≤0.8 bar at 100 L/min oil flow), ensuring consistent oil supply to the engine even under full load—preventing oil starvation that leads to catastrophic bearing failure

Engineered to withstand the extreme conditions of engine lubrication systems—oil temperatures up to 150°C (302°F) and operating pressures up to 15 bar (218 psi)—the filter features a rugged, heat-stable design:

Housing: Cold-rolled steel housing (1.2mm thickness) with a powder-coated finish (epoxy-polyester, 60μm thickness) that resists corrosion from oil additives and engine bay moisture, passing 1,000 hours of salt spray testing.

Seals: Viton fluoroelastomer O-rings (80 Shore A hardness) that retain elasticity at high temperatures (no hardening up to 200°C) and create a leak-tight seal with the filter mount—preventing oil bypass.

Inner Core: Reinforced steel inner core (0.8mm thickness) that supports the media under high pressure, avoiding media collapse even if the filter is fully clogged.

These components ensure the filter remains structurally intact and functional, even in the high-heat environments of turbocharged Cummins engines (e.g., X15 engines under 100% load)

To eliminate two critical risks to engine health—unfiltered oil bypass and oil drainback during shutdown—the filter integrates proprietary protective mechanisms:

Pressure-Relief Bypass Valve: A spring-loaded bypass valve (set to 1.2 bar) that opens only if the media is fully clogged, allowing filtered oil to circulate (not unfiltered) and preventing engine damage. Unlike cheap filters with plastic valves, this valve uses a stainless steel spring and brass seat for long-term reliability.

Anti-Drainback Valve: A nitrile rubber check valve that seals the filter’s oil inlet when the engine is off, preventing oil from draining back into the oil pan. This ensures instant oil pressure at startup (≤2 seconds) and eliminates dry-start wear (a major cause of premature engine failure in cold weather)

These features reduce engine wear by 40% compared to filters without anti-drainback or proper bypass valves

Designed for fast, hassle-free replacement by fleet technicians, the filter simplifies maintenance with user-friendly details:

Threaded Base with Gasket: The 1-inch NPT threaded base comes pre-lubricated with oil-resistant grease, and the integrated Viton gasket eliminates the need for separate sealants—ensuring a leak-free fit with hand-tightening (plus 1/4 turn with a filter wrench).

Clear Service Markings: Laser-etched part numbers (C4327369 / FS36259) and service interval reminders (“Replace Every 25,000 km”) on the housing make identification and maintenance scheduling easy.

Lightweight & Ergonomic Design: Weighing only 0.8kg, the filter is easy to handle, and its smooth housing surface provides a secure grip for filter wrenches—reducing replacement time to 10 minutes.

Each unit undergoes 100% testing, including filtration efficiency (ISO 4548), pressure drop (ISO 3968), and leak verification (15 bar pressure test), backed by a 12-month OEM warranty against defects (e.g., media failure, valve malfunction, housing corrosion)