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QSF2.8 Diesel Engine Full Gasket Kit OEM 3803040 3803038 5281440
Cum mins QSF2.8 Diesel Engine Full Gasket Kit | OEM 3803040 3803038 5281440 | for Cum mins Engine Parts
Rebuild or overhaul your compact excavator, skid steer loader, or industrial equipment with this comprehensive full gasket kit for the Cum mins QSF2.8 diesel engine. This complete gasket set includes every sealing component necessary for a top-end or full engine rebuild, ensuring proper compression, leak-free operation, and long-term durability. Designed to meet or exceed original OEM specifications, this kit contains high-quality gaskets and seals for all engine mating surfaces including cylinder head, oil pan, valve cover, and more. Direct replacement for multiple OEM kit numbers including 3803040, 3803038, 5281440, and related variants. Fits a wide range of Cum mins-powered compact equipment – verify your engine model and serial number for compatibility.
Technical Specifications
Parameter
Details
Engine Model
Cum mins QSF2.8, ISF2.8, QSF2.8 CM2350 F106, QSF2.8 Tier 4 Final / Stage V
Excavator / Construction Machinery / Compact Equipment
Cylinder Head Gasket Material
Multi-Layer Steel (MLS) / Graphite Composite
Seal Material
High-Temperature Viton / Nitrile Rubber
Condition
Brand New
Warranty
12 Months
Kit Contents
Typical components – may vary by engine configuration
Component
OEM Part Reference
Cylinder Head Gasket
OEM Specification
Oil Pan Gasket
5281440
Valve Cover Gasket
5613915L
Intake Manifold Gasket
4983019
Exhaust Manifold Gasket
OEM Specification
Front Crankshaft Oil Seal
3695721F
Rear Crankshaft Oil Seal
OEM Specification
Fuel Injector O-Rings
OEM Specification
Turbocharger Gaskets
OEM Specification
EGR Cooler Gaskets
OEM Specification
Water Pump Gasket
OEM Specification
Thermostat Housing Gasket
OEM Specification
Rocker Cover Gaskets
OEM Specification
Pushrod Cover Gaskets
OEM Specification
O-Ring Plugs
5294118
D-Ring Seals
4957784
This kit includes all necessary seals, gaskets, and O-rings for a complete engine overhaul. Individual components may vary based on engine build specification, but the kit contains everything required for a full rebuild.
Compatible Equipment Models
Equipment Type
Applicable Models
Mini Excavators
JCB 8016, 8025, 8030 (with Cum mins QSF2.8 engine)
Mini Excavators
Kubota U17, U25, U35 (select Tier 4 models with Cum mins engine)
Compact Track Loaders
Case TR270, TV370
Skid Steer Loaders
Case SR200, SV300, TR320
Compact Wheel Loaders
JCB 403, 406
Backhoe Loaders
JCB 1CX, 2CX (select Tier 4 models)
Other Applications
Generators, industrial pumps, and agricultural machinery powered by Cum mins QSF2.8 / ISF2.8 diesel engines
Product Features & Engineering Advantages
Complete Engine Overhaul Solution – This comprehensive gasket kit includes every seal and gasket needed for a complete engine rebuild. From the cylinder head to the oil pan, all mating surfaces are covered, eliminating the need to source individual components separately.
OEM-Spec Cylinder Head Gasket – The cylinder head gasket is manufactured to original equipment specifications, ensuring proper combustion sealing and compression. Available in MLS (Multi-Layer Steel) or high-grade graphite composite depending on engine application, providing excellent heat resistance and long-term durability under extreme operating conditions.
Precision-Fit Oil Pan Gasket – Includes the oil pan gasket (OEM 5281440) designed specifically for the QSF2.8's oil pan configuration. Ensures a leak-free seal between the oil pan and engine block, preventing oil leaks that can lead to engine damage.
High-Temperature Seal Materials – All seals exposed to high heat, such as turbocharger and exhaust manifold gaskets, are manufactured from high-temperature materials including Viton and multi-layer steel. These materials withstand the extreme temperatures generated by modern Tier 4 diesel engines.
Front Crankshaft Seal Included – The kit includes the front crankshaft oil seal (OEM 3695721F), a critical component that prevents oil leakage from the timing gear case. This seal is specifically designed for the QSF2.8's front crankshaft journal.
Complete Valve Train Sealing – Includes valve cover gaskets (OEM 5613915L) that seal the rocker arm cover to the cylinder head. These gaskets are designed to withstand the pressures and temperatures of the valvetrain environment while preventing oil leaks.
Intake and Exhaust Manifold Gaskets – Features intake manifold gaskets (OEM 4983019) that seal the intake manifold to the cylinder head, ensuring proper air-fuel mixture delivery. Exhaust manifold gaskets are also included to prevent exhaust gas leaks.
All Necessary O-Rings and Seals – The kit contains all required O-rings including the sump plug O-ring (OEM 5294118) and D-ring seals (OEM 4957784) for various engine plugs and sensors. These small but critical components prevent oil and coolant leaks at multiple points throughout the engine.
Quality Assurance
100% Complete – Every gasket and seal required for a full engine overhaul is included in one convenient kit.
OEM Standard – Manufactured to meet or exceed original Cum mins specifications in ISO-certified facilities.
Warranty – 12-month warranty against manufacturing defects.
Global Shipping – Fast DHL, FedEx, UPS shipping available from multiple warehouses.
Expert Support – Need help identifying the correct kit for your engine? Send us your engine serial number (ESN) – Cum mins ESN can be found on the engine data plate, typically located on the rocker cover or side of the gear housing.
Installation Guidelines
The cylinder head gasket is a critical component that seals the combustion chamber between the engine block and cylinder head. When installing a new gasket kit on a Cum mins QSF2.8 engine, follow these critical guidelines:
Always verify the correct gasket kit based on engine serial number, as QSF2.8 engines may have different gasket specifications depending on build date and Tier level.
The oil pan gasket (5281440) requires proper alignment during installation to prevent leaks.
Cylinder head bolts must be replaced according to factory specifications – do not reuse old head bolts.
Clean all mating surfaces thoroughly before installation to ensure proper sealing.
Follow factory torque specifications and tightening sequences for all components.
Professional installation is recommended due to the precision required for proper sealing.
Warning: Improper installation can lead to coolant leaks, oil leaks, compression loss, and severe engine damage. Always verify proper torque specifications and tightening sequences.