2020 BMW 520I Engine Parts

This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

AJUSA supplies both parts for the 2020 BMW 520I.

Part numbers include AJUSA 54263900 and AJUSA 54303200.

This table covers the front and rear seals that keep oil in at the crankshaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Crankshaft Seal parts for the 2020 BMW 520I come from AJUSA.

Part numbers include AJUSA 15075200 and AJUSA 15107900.

This table covers the bolts that clamp the cylinder head to the block. Read more

AJUSA supplies both parts for the 2020 BMW 520I.

This group includes AJUSA 81065000 and AJUSA 81077900.

This table covers the head gaskets that seal the block to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

AJUSA supplies the 4 Cylinder Head Gasket parts for the 2020 BMW 520I.

This group includes AJUSA 10220600, AJUSA 10220610 and AJUSA 10248100 and the remaining parts above.

This table covers multi-piece gasket sets for a cylinder-head job. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

AJUSA supplies both parts for the 2020 BMW 520I.

Listed part numbers: AJUSA 52561600 and AJUSA 52563000.

This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

AJUSA supplies both parts for the 2020 BMW 520I.

Part numbers include AJUSA 50515100 and AJUSA 50516100.

This table covers the Intake manifolds. Typical signs include an exhaust tick, a vacuum leak, or a gasket that has burned through. Replace the gaskets and hardware; a warped flange will leak with a new gasket alone. Read more

This group shows a single part: VAICO V204803.

This table covers the gaskets between the intake manifold and the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2020 BMW 520I — AJUSA 13313000.

This table covers the mounts that hold the engine to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

2 Motor Mount parts for the 2020 BMW 520I come from ANCHOR.

This group includes ANCHOR 10309 and ANCHOR 10308.

This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant. Read more

This group shows a single part: MARELLI RO0044.

This table covers the gaskets that seal the Oil Cooler. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

AJUSA supplies the 3 Oil Cooler Gasket parts for the 2020 BMW 520I.

Listed part numbers: AJUSA 77005900, AJUSA 77006000 and AJUSA 77031200.

This table covers the drain plugs in the oil pan. Read more

2 Oil Drain Plug parts for the 2020 BMW 520I come from 2 brands — AGS and DORMAN.

This group includes AGS ODP00010 and DORMAN 090088.

This table covers the crush washers and gaskets under the oil drain plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2020 BMW 520I — AJUSA 21010400.

This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive. Read more

2 Oil Filter parts for the 2020 BMW 520I come from 2 brands — MOBIL and VARIOUS MFR.

The High Performance / Heavy Duty section lists 1 option from MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1C354A is listed in this group.

In the Standard Replacement grade, VARIOUS MFR supplies 1 part: built to original-equipment specification. A representative part number is VARIOUS MFR PO99460EX.

Part numbers include MOBIL M1C354A and VARIOUS MFR PO99460EX.

This table covers the Oil Filter covers. Read more

2 Oil Filter Cover parts are listed for the 2020 BMW 520I, from DORMAN and SKP.

Part numbers include DORMAN 921115 and SKP SK921115.

This table covers the gaskets that seal the Timing Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

This group shows a single part: AJUSA 77090600.

This table covers the gaskets that seal the Turbocharger. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

4 Turbocharger Gasket parts are listed for the 2020 BMW 520I, from AJUSA and ELRING.

Listed part numbers: AJUSA JTC12488, AJUSA JTC12514 and ELRING 087320, plus the other parts above.

This table covers the Turbocharger Oil lines. Typical signs include a wet fitting, a rusted pipe, or a pressure loss in this circuit. Flare or thread the new line the way the notes specify; a kinked replacement will fail early. Read more

2 Turbocharger Oil Line parts for the 2020 BMW 520I come from AJUSA.

Listed part numbers: AJUSA OP10925 and AJUSA OP11220.

This table covers the Turbocharger Oil Line Gasket O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

This group shows a single part: AJUSA 16006101.

This table covers the Valve covers. Read more

One part is listed for the 2020 BMW 520I — SKP SK743462.

This table covers the gaskets that seal the valve cover to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

2 Valve Cover Gasket parts for the 2020 BMW 520I come from AJUSA.

This group includes AJUSA 11140100 and AJUSA 11162700.

This table covers the lifters / tappets that transfer cam motion to the valves. Read more

This group shows a single part: AJUSA 85022300.

This table covers the seals on each valve stem that control oil into the guides. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

3 Valve Stem Seal parts for the 2020 BMW 520I come from AJUSA.

This group includes AJUSA 57067700, AJUSA 12027900 and AJUSA 12028200.