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Fleetguard LF691A Oil Filter

Fleetguard LF691A is a high-efficiency spin-on oil filter specially engineered for Cummins 4BT3.9/6BT5.9 light-medium duty diesel engines, widely applicable to Dongfeng light trucks, construction machinery (compact excavators, small loaders), and diesel generator sets. It adopts Fleetguard’s classic cellulose-glass fiber composite filter media, achieving 95% filtration efficiency at 30 microns, which can effectively capture metal abrasives, carbon deposits, and colloidal impurities in the lubrication system, protecting engine bearings, piston rings, and camshafts from premature wear and ensuring stable operation under intermittent working conditions.

Key specifications: 94mm outer diameter, 176mm height, 1″-16 UN-2B thread, and 62.5×72mm seal ring, perfectly matching the original mounting interface. It supports tool-free quick installation and maintains stable performance in the temperature range of -30°C to 120°C.

As an OEM-grade replacement for Cummins 3903220, it is an ideal maintenance accessory for small and medium-sized engineering machinery and light truck fleets.

Advantages of  LF691A Oil Filter

  • Engine Exclusive Matching: Tailored for 4BT/6BT engines, it fits the mechanical pump oil circuit system, ensuring zero compatibility risk and reliable protection for light-medium duty equipment.

  • Composite Media Filtration: 30-micron precision captures 95% of contaminants, extending engine service life by 20% and reducing maintenance frequency for intermittent operation scenarios.

  • Convenient Maintenance Design: Tool-free installation enables replacement within 2 minutes, minimizing equipment downtime for small construction machinery teams.

  • Wide Temperature Adaptability: Stable operation from -30°C to 120°C adapts to both alpine and high-temperature construction environments, solving filter failure problems in extreme climates.

  • Cost-Effective Solution: OEM-grade quality with 25% lower price than original parts, significantly reducing the maintenance cost of small and medium-sized fleets and generator set users.

Technical Specifications

Part Number:LF691A
Filter Type:Oil Filter
Dimensions:OD≈φ135mm, Total Height≈309mm
Connection SpecsThread Specification: 1 1/2-16 UNS-2B
Filtration Precision:30μm(TWA Standard)
Filtration Efficiency:≥95% (30μm, TWA Standard)
Applicable Models/Platforms:Caterpillar 1R0716, 2P4005, 1R1808; replaces Clark TL2FSO
Operating Conditions:Temp: -40~120℃; Pressure: ≤12bar; Flow rate: ≥45L/h
Lead Time:15 – 30 Working Days
Payment Terms:T/T ,L/C

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Engine Model

Dimensions

Connection Specs

Filtration Precision

Filtration Efficiency

LF691AOD≈φ135mm, Total Height≈309mmThread Specification: 1 1/2-16 UNS-2B30μm≥95% (ISO 4548 Standard)
LF3970OD≈φ93mm, Total Height≈176mmThread Specification: 1 1/8-16 UN-2B30μm≥98% (ISO 4548 Standard)
LF3764OD≈φ93mm, Total Height≈100mmThread Specification: M20×1.5-6H30μm≥98% (ISO 4548 Standard)
LF3716OD≈φ116mm, Total Height≈249mmThread Specification: 1 1/2-12 UNS-2B30μm≥95% (ISO 4548 Standard)
LF3321OD≈φ108mm, Total Height≈260mmThread Specification: 1 1/8-16 UN-2B25μm≥98% (ISO 4548 Standard)
LF3806OD≈φ93mm, Total Height≈176mmThread Specification: 1-16 UN-2B30μm≥98% (ISO 4548 Standard)
LF9050OD≈φ119mm, Total Height≈297mmThread Specification: M90×2-7H INT30μm≥98% (ISO 4548 Standard)
LF9070OD≈φ118mm, Total Height≈352mmThread Specification: M95×2.5-7H INT30μm≥98% (ISO 4548 Standard)
LF9009OD≈φ118mm, Total Height≈301mmThread Specification: 2 1/4-12 UNS-2B30μm≥98% (ISO 4548 Standard)
LF3349OD≈φ93mm, Total Height≈176mmThread Specification: 1-16 UN-2B30μm≥95% (ISO 4548 Standard)
L131-030-AM 00MXOD≈φ83mm, Total Height≈155mmThread Specification: M20×1.5-6H INT20μm≥98% (ISO 4548 Standard)
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General Infomation of DCEC C220-10A Automotive Engine

Engine ModelC220-10AAdvertised Power220 HP @ 2400 RPM
Peak Torque780 N.m @ 1500 RPMCurve&DatasheetFR 91484
Fuel SystemBosch P7100 PumpNo. Of Cylinders6
AspirationTurbocharged & Air IntercoolerDisplacement8.3 L
Bore * Stroke114 mm * 135 mmCPL Code Revision8418
Dry Weight 617 kgWet Weight 636 kg
Compression Ratio17.3 : 1

Installation Data of DCEC C220-10A Automotive Engine

Center of Gravity. Distance From Front Face of Block427 mm
Center of Gravity. Distance Above Crank Centerline(Above Crankshaft)163 mm
Maximum Bending Moment At Rear Face of Block1356 N.m
Maximum Crankshaft Thrust Bearing load limit- Intermittent load3558 N
Maximum Crankshaft Thrust Bearing load limit-Continuous load2670 N
Instantaneous Inertia At Rotating: (Without Flywheel) N/A
Emissions CertificationGB17691/GB14761
Idle Speed800 RPM
Maximum Non-Load Speed2720 RPM
Over Speed Performance (Within 15 Seconds)3500 RPM
The Clutch Torque @ 800Rpm495 N.m
Maximum Altitude At Which Continuous operation Is Allowed3000 m
Supercharger outlet Exhaust Pressure limit Value 450 kPa
Maximum Power of Exhaust Brake114 kW
——END——

Engine Performance Data Rated power of DCEC C220-10A Automotive Drive Engine

Rated PowerTorque PeakRated PowerTorque Peak
Engine Speed2400 RPM1500 RPMExhaust Temperature625 ℃602 ℃
Oil Pressure345 kPa282 kPaFuel Consumption43 L/hr26.9 L/hr
The Air Flow18.9 m³/min9.1 m³/minCoolant FlowN/AN/A
The Flow Rate of Pressurized AirN/AN/AHeat Loss Coolant77 kW60 kW
Pressurized Air PressureN/AN/AHeat Loss Air46 kW14 kW
The Exhaust Flow45 m³/min21.3 m³/minMechanical Loss of PowerN/AN/A

Performance-Curve-of-C220-10A-Engine-for-Vehicle.webp

System Technical Data of DCEC C220-10A Automotive Drive Engine

Air Intake SystemMaximum Temperature Rise Between Ambient Air and Engine Air Inlet15
Maximum Intake Restriction with Dry Type Air Cleaner,with Clean Filter-Medium Duty2.9 (300) kPa (mmH2O)
Maximum Intake Restriction with Dry Type Air Cleaner,with Clean Filter-Heavy Duty3.7 (380) kPa (mmH2O)
Maximum Intake Restriction with Dirty Filter6.2 (635) kPa (mmH2O)
Turbocharged & IntercooledMaximum Intake Manifold Temperature-Second Level55
Maximum Intake Manifold Temperature-Three-Level50
Intercooler Cooling Temperature-Second Level25
Intercooler Cooling Temperature-Three-Level20
Maximum Allowable Pressure Difference Before and After Intercooling-Three-Level16.7 (125) kPa(mmHg)
Minimum Inlet Pipe Diameter Allowed-Three-Level75 mm
Exhaust SystemMaximum Back Pressure Imposed by Complete Exhaust System10.0 (75) kPa (mmHg)
Exhaust Pipe Size Normally Accepable75 mm
Maximum Static Bend Allowed for Turbocharger Exhaust FlangeN/A
Lubrication SystemLow oil Level Inclination Angle-Front Up45 °
Low oil Level Inclination Angle-Back Up45 °
Low oil Level Inclination Angle-Fuel Pump Side Up45 °
Low oil Level Inclination Angle-Exhaust Side Up45 °
Oil Sump Capacity-Upper Limit14.2 L
Oil Sump Capacity-Lower Limit12.4 L
Capacity of The Whole System16.4 L
Cooling SystemCoolant Capacity – Engine only9 L
Standard Thermostat (Modulating) Range83 – 95
Minimum Fill Rate ( Without Low Level Alarm)19 L/min
Minimum Coolant Expansion Space – % of System Capacity6 %
Water Tank Capacity Without Water Expansion6 L
Maximum Coolant Pressure (Without Pressure Cap, Thermostat Closed)276 kPa
Maximum Degassing Time25 mins
Maximum Coolant Flow to Accessories41 L/min
Maximum Coolant Temperature Engine out100
Minimum Allows Pressure of Pressure Cap50 kPa
Minimum Recommended Coolant Temperature70
Common Operating Temperature Range of Fans with Fan Clutch93
Maximum Coolent Temperature For Engine Protection Control100
The Limit Environmental Temperature at Rated SpeedSecond Level 45 ;Three-Level 42
The Limit Environmental Temperature at Peak TorqueSecond Level 40 ;Three-Level 37
24V Electrical SystemMaximum Allowable Resistance of Cranking Circuit0.002
The Cold Start Current When Engine and The Clutch Separate12 V 500 24 V 250
Cold Starting SystemMaximum Unaided Cold Start Temperature120 RPM -10  
Maximum Aided Cold Start Temperature110 RPM -35  
Fuel SystemMaximum Fuel Return Resistance520 (mmHg)
Maximum Inlet Resistance of oil Pump with Clean Filter150 (mmHg)
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Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

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