LOWER GASKET SET

Name: 131402 - LOWER GASKET SET
Brand: PAI Industries
SKU: 131402
Price: 244.72 USD
Availability: InStock

This lower engine gasket set, also called a conversion set, is designed for the bottom half of Cummins 4B series four-cylinder diesel engines (3.9L). It contains all necessary gaskets, seals, and o-rings for the oil pan, front and rear crankshafts, timing cover, oil cooler, and other lower engine components. Replacing these seals during a rebuild or repair prevents oil and coolant leaks and helps maintain proper lubrication. The set is typically used together with an upper head gasket set for a complete engine overhaul.

$244.72

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Verified fitment

Cummins 4B (3.9L)
Cummins 4BT (3.9L Turbo)
Cummins 4BTA (3.9L Aftercooled)

Intended for the 4-cylinder Cummins B engine family. Verify compatibility with your engine serial number and application (e.g., on-highway truck, industrial, marine). Aftermarket kits cross‑referenced to this number may vary in exact contents; confirm the component list matches your needs.

Specifications

SKU131402BrandPAI IndustriesCategoryEngineAvailabilityIn StockEngine FamilyCummins 4B Series (4-cylinder, 3.9L)Kit TypeLower Engine Gasket Set (Conversion Set)MaterialComposite (fiber/elastomer)Key Components IncludedRear crankshaft seal (3909410), front seal kit (3802820), oil pan gasket, timing cover gasket, oil cooler mounting gaskets, gear cover gasket, fuel pump gasket, side cover gasket, piston cooling nozzle gaskets, and multiple o‑rings and sealing rings (approximately 20+ pieces)