Catalogue numbers of the original spare parts of the Cummins ISF3.8 engine
Below are the catalogue numbers of the original spare parts most in demand during the servicing and repair of the engine.
Some numbers may differ depending on the country of supply, the year of manufacture and the modification of your engine.
It is recommended to select spare parts by engine number or VIN.
Oil filter
Oil filter — 5283170.
Intake manifold
Intake manifold parts: 1 — bolt (M6×1.0×14) — 3900627; 2 — bolt (M8×1.25×40) — 3900678; 3 — bolt (M8×1.25×90) — 3913366; 4 — flanged hexagon head bolt — 3966976; 6 — plug — 4940117; 7 — intake manifold gasket — 4983020; 8 — cold-start aid system heating element — 5289774; 9 — intake manifold connector — 5272693.
Exhaust manifold
Exhaust manifold parts: 1 — flanged hexagon head bolt — 3944593; 2 — stud — 3944655; 3 — bush — 3945252; 4 — exhaust manifold — 3948477; 5 — exhaust manifold gasket — 2830444.
Cylinder block
Cylinder block parts: 2 — bolt (M10×1.5×25) — 3902460; 3 — cylinder block stiffener — 4945794; 5 — flanged hexagon head bolt — 3927948; 6 — bush — 5298256; 7 — cylinder block — 5289698, 5289696; 8 — cylindrical pin — 3900068; 9 — main bearing shell cap — 4932259, 4932260; 10 — main bearing shell cap — 4932261.
Tappet
1 — valve tappet — 3947759.
Piston-connecting rod assembly
Piston-connecting rod assembly parts: 1 — connecting rod bush — 5257363; 2 — connecting rod cap bolt — 4891179; 3 — connecting rod — 4989162, 5257364; 4 — connecting rod bearing, upper — 4948508; 5 — connecting rod bearing, lower — 4948509; 6 — piston — 5258754; piston (+0.5 mm) — 5262760; piston (+1.0 mm) — 5262761; piston set (4 pcs) — 2881748; 7 — circlip — 3920691; 8 — oil scraper ring — 3932520; 9 — first compression ring — 3959079; 10 — second compression ring — 3943447; 11 — gudgeon pin — 3934047; 12 — piston cooling nozzle — 4937308; 13 — banjo-type union bolt — 3964817.
Crankshaft
Crankshaft parts: 1 — splined coupling bush — 4937957; 2 — crankshaft bush — 2831066; 3 — crankshaft gear — 4934419; 4 — crankshaft — 5261375; 5 — dowel pin — 3904483; 6 — lower main bearing shell — 4948504; 7 — upper main bearing shell — 4948505; 8 — crankshaft main bearing thrust shell — 4948506; 9 — repair bush set for the front crankshaft seal — 3802820; 10 — repair bush set for the rear crankshaft seal — 3926126.
Cylinder block front cover
Cylinder block front cover parts: 4 — seal — 4890832; 5 — seal — 4938765; 6 — front cover gasket — 4980605; 7 — oil pump rotor, driven — 4947067; 8 — oil pump rotor, driving — 4947068; 9 — relief valve — 4947069; 10 — gasket — 4947071; 12 — gasket — 4947073.
Flywheel housing
Flywheel housing parts: 6 — O-ring — 3910260; 8 — seal — 3968563.
Crankcase ventilation breather
Breather parts: 1 — O-ring — 145536; 5 — breather pipe — 5259121; 6 — oil separator breather — 5259161; 7 — hose — 4947079.
Oil sump
Oil sump parts: 2 — gasket — 4995185; 3 — oil sump — 5266886; 4 — oil sump gasket — 5256541.
Alternator
Alternator — catalogue number 5272634.
Turbocharger pipes
Turbocharger pipes: 1 — male-thread union — 5269713; 2 — oil drain pipe gasket — 3934638; 3 — bolt (M6×1.0×16) — 3913638; 4 — O-ring — 3922794; 5 — male-thread union — 3932446; 6 — sealing washer — 3932484; 7 — flexible hose — 5282268; 8 — hose — 5263842; 10 — turbocharger oil drain connector — 5253733; 11 — turbocharger oil drain connector — 5265252; 12 — O-ring — 3928624.
Turbocharger
1 — turbocharger — 2836258, 2842804; 2 — gasket — 3932475.
Auxiliary drive belt tensioner
2 — auxiliary drive belt tensioner — 5267127.
Fan drive
4 — fan hub holder — 3923044; 5 — bearing — 3910739; 6 — fan hub — 5272335; 7 — fan support — 4941319; 8 — fan pulley — 4934465.
Coolant pump
1 — bolt — 3901865; 2 — coolant pump — 5263374.
Thermostat
1 — thermostat — 3973834; 2 — O-ring — 3954829.
Cylinder head cover
1 — sealing washer — 4940584; 4 — cylinder head cover gasket — 4946239.
Cylinder head
1 — bolt — 4940194; 2 — cylinder head gasket — 4943051; 3 — collet — 3940123; 4 — exhaust valve — 3940734; 5 — intake valve — 3940735; 6 — valve stem seal — 3955393; 7 — valve spring — 4936080; 8 — valve spring retainer — 3943198; 12 — valve seat — 3943449; repair (0.127 mm) — 3939719; repair (0.254 mm) — 3939720; repair (0.508 mm) — 3939721; 13 — valve seat — 3943450; repair (0.127 mm) — 3939723; repair (0.254 mm) — 3939724; repair (0.508 mm) — 3939725; 14 — cylinder head — 5258276.
Camshaft
Camshaft parts: 1 — camshaft gear — 3955152; 2 — thrust plate — 5258931; 3 — bolt (M8×1.25×16) — 3925883; 5 — camshaft — 5259582.
Rocker arms
1 — valve bridge — 4940179; 2 — pushrod — 5272007; 4 — rocker shaft — 4928699; 5 — rocker support — 5259508; 6 — seat holder — 3935945; 7 — rocker seat — 3935946; 10 — rocker arm — 5259945, 5259952; 12 — rocker arm — 5259946.
Injector
2 — injector holder — 4944917; 3 — seal — 5288374; 4 — injector — 5283275; 5 — O-ring — 5288373.
High-pressure fuel pipes and fuel rail
2 — high-pressure fuel pipe — 4941699; 3 — high-pressure fuel pipe — 4941701; 4 — pressure sensor — 3974092; 5 — relief valve — 3974093; 6 — fuel manifold — 4947583.
Fuel filter
4 — filter element — 5283169.
High-pressure fuel pump (injection pump)
2 — injection pump gear — 3955153; 5 — O-ring — 2830977; 6 — sealing washer — 4891385; 9 — injection pump — 5256608; 10 — fuel metering valve — 5257595; 11 — O-ring — 3947269; 12 — O-ring — 3947270.
Starter
Starter catalogue number — 5263797.
