2018 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

2 Conversion / Lower Gasket Set parts for the 2018 BMW 520I come from AJUSA.

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

AJUSA supplies both parts for the 2018 BMW 520I.

This group includes AJUSA 15075200 and AJUSA 15107900.

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

2 Cylinder Head Bolt parts for the 2018 BMW 520I come from AJUSA.

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

4 Cylinder Head Gasket parts for the 2018 BMW 520I come from AJUSA.

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

2 Cylinder Head Gasket Set parts for the 2018 BMW 520I come from AJUSA.

Part numbers include 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

2 Engine Kit Gasket Set parts for the 2018 BMW 520I come from AJUSA.

This group includes 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

One part is listed for the 2018 BMW 520I — 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

This group shows a single part: 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

6 Motor Mount parts are listed for the 2018 BMW 520I, from ANCHOR, DEA / MARMON RIDE CONTROL and WESTAR. ANCHOR 10067 carries the "Popular" badge.

Listed part numbers: ANCHOR 10067, ANCHOR 10068 and DEA / MARMON RIDE CONTROL A70072, plus the other parts above.

This table covers the Motor Mount kits. Read more

One part is listed for the 2018 BMW 520I — ANCHOR 300965.

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

One part is listed for the 2018 BMW 520I — 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

3 Oil Cooler Gasket parts for the 2018 BMW 520I come from AJUSA.

Part numbers include AJUSA 77005900, AJUSA 77006000 and AJUSA 77031200.

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

2 Oil Drain Plug parts are listed for the 2018 BMW 520I, from AGS and DORMAN.

Listed part numbers: 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

This group shows a single part: 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

8 Oil Filter parts are listed for the 2018 BMW 520I, from WIX, FVP, PRO-TEC and 4 other brands. MAHLE / CLEVITE OX8132D carries the "Popular" badge.

In the Economy grade, FVP and PRO-TEC supply 2 parts: the catalog's value-priced group. A representative part number is FVP G0358.

In the High Performance / Heavy Duty grade, MOBIL and WIX supply 2 parts: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is MOBIL M1C354A.

The Standard Replacement section lists 4 options from MAHLE / CLEVITE, MANN, VARIOUS MFR and 1 other brand — built to original-equipment specification. MAHLE / CLEVITE OX8132D is listed in this group.

This group includes MAHLE / CLEVITE OX8132D, FVP G0358 and PRO-TEC PXL10358 and the remaining parts above.

This table covers the Oil Filter covers. Read more

2 Oil Filter Cover parts for the 2018 BMW 520I come from 2 brands — DORMAN and SKP.

Listed part numbers: 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

One part is listed for the 2018 BMW 520I — 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 for the 2018 BMW 520I come from 2 brands — 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

AJUSA supplies both parts for the 2018 BMW 520I.

This group includes 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

One part is listed for the 2018 BMW 520I — AJUSA 16006101.

This table covers the Valve covers. Read more

This group shows a single part: 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

AJUSA supplies both parts for the 2018 BMW 520I.

This group includes AJUSA 11140100 and AJUSA 11162700.

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

One part is listed for the 2018 BMW 520I — 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

AJUSA supplies the 3 Valve Stem Seal parts for the 2018 BMW 520I.

Listed part numbers: AJUSA 57067700, AJUSA 12027900 and AJUSA 12028200.