2021 BMW M550I Engine Parts

This table covers the seals at each camshaft end. 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

One part is listed for the 2021 BMW M550I — FEL-PRO TCS46149.

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

This group shows a single part: AJUSA 54304500.

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

6 Crankshaft Seal parts are listed for the 2021 BMW M550I, from VICTOR REINZ, AJUSA, FEL-PRO and 1 other brand. VICTOR REINZ 813939100 carries the "Popular" badge.

Listed part numbers: VICTOR REINZ 813939100, VICTOR REINZ 811040300 and AJUSA 61002100, plus the other parts above.

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

This group shows a single part: AJUSA 81061000.

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 2021 BMW M550I come from AJUSA.

This group includes AJUSA 10249900, AJUSA 10249910 and AJUSA 52607100 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

This group shows a single part: AJUSA 52607000.

This table covers the Engine covers. Read more

This group shows a single part: TECHPRO BM1228184.

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

This group shows a single part: AJUSA 50549100.

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 13314000.

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

5 Motor Mount parts are listed for the 2021 BMW M550I, from DEA / MARMON RIDE CONTROL, ANCHOR, PIONEER and 1 other brand. ANCHOR 10258 carries the "Popular" badge.

Listed part numbers: ANCHOR 10258, DEA / MARMON RIDE CONTROL A70085 and DEA / MARMON RIDE CONTROL A70086, plus the other parts above.

This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable. Read more

6 Oil parts are listed for the 2021 BMW M550I, from LIQUI MOLY, VALVOLINE and MOBIL. MOBIL 127568 carries the "Popular" badge.

Part numbers include MOBIL 127568, VALVOLINE 787301 and LIQUI MOLY 22260, among others listed above.

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

One part is listed for the 2021 BMW M550I — REIN HWU0115.

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 21016800.

This table covers the caps on the oil filler neck. Read more

2 Oil Filler Cap parts are listed for the 2021 BMW M550I, from MOTORAD and VAICO.

This group includes MOTORAD MO214 and VAICO V204688.

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

13 Oil Filter parts are listed for the 2021 BMW M550I, from VARIOUS MFR, HENGST, PRO-TEC and 8 other brands. PRO-TEC PXL57189 carries the "Popular" badge.

In the Economy grade, VARIOUS MFR, PRO-TEC, CHAMP / LUBER-FINER and 1 other brand supply 5 parts: the catalog's value-priced group. A representative part number is PRO-TEC PXL57189.

The Standard Replacement section lists 8 options from HENGST, MAHLE / CLEVITE, WIX and 4 other brands — built to original-equipment specification. MAHLE / CLEVITE OX3537D is listed in this group.

This table covers the Oil Filter covers. Read more

4 Oil Filter Cover parts for the 2021 BMW M550I come from 4 brands — DORMAN, MOTORAD, REIN and 1 other brand.

Part numbers include DORMAN 921111, MOTORAD MO308 and REIN CPL0071, among others listed above.

This table covers the Oil Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

2 Oil Level Sensor parts are listed for the 2021 BMW M550I, from STANDARD MOTOR PRODUCTS and ÜRO PARTS.

This group includes STANDARD MOTOR PRODUCTS FLS325 and ÜRO PARTS 12618638754.

This table covers the Oil Level Sensor 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 2021 BMW M550I — AJUSA 16078650.

This table covers the gaskets between the oil pan and the block. 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 2021 BMW M550I — AJUSA 59018100.

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 2021 BMW M550I — AJUSA 77031300.

This table covers the seals at the Timing Cover. 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 Timing Cover Seal parts are listed for the 2021 BMW M550I, from FEL-PRO and MAHLE / CLEVITE.

Part numbers include FEL-PRO TCS46311 and MAHLE / CLEVITE 67930.

This table covers the Turbocharger Boost sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

This group shows a single part: HELLA 358152381.

This table covers the Turbocharger Coolant 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

REIN supplies the 3 Turbocharger Coolant Line parts for the 2021 BMW M550I.

Part numbers include REIN CHT0698, REIN CHT0697 and REIN CHT0695.

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

3 Turbocharger Gasket parts for the 2021 BMW M550I come from 2 brands — AJUSA and ELRING.

Part numbers include AJUSA 01158200, AJUSA JTC12221 and ELRING 074140.

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

6 Turbocharger Oil Line parts are listed for the 2021 BMW M550I, from DORMAN, AJUSA, REIN and 1 other brand. DORMAN 667593 carries the "Popular" badge.

Listed part numbers: DORMAN 667593, REIN TFP0345 and AJUSA OP11235, plus the other parts above.

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 2021 BMW M550I.

This group includes AJUSA 56081400 and AJUSA 56081500.

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

One part is listed for the 2021 BMW M550I — 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 are listed for the 2021 BMW M550I, from AJUSA and VICTOR REINZ.

Listed part numbers: AJUSA 12033700, AJUSA 57069600 and VICTOR REINZ 123728101.

This table covers the Variable Valve Timing (VVT) Eccentric Shaft actuators. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

One part is listed for the 2021 BMW M550I — ÜRO PARTS 11378652738.

This table covers the oil-control solenoids that command the cam phasers. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

6 Variable Valve Timing (VVT) Solenoid / Actuator parts are listed for the 2021 BMW M550I, from VAICO, GATES, WALKER PRODUCTS and 2 other brands. GATES VVS229 carries the "Popular" badge.

Economy: 5 parts, from GATES, WALKER PRODUCTS, HOLSTEIN and 2 other brands. A representative part number is GATES VVS229.

The Standard Replacement section: 1 option from VAICO. VAICO V203994 is listed in this group.

Part numbers include GATES VVS229, WALKER PRODUCTS 5901282 and HOLSTEIN 2VTS0370, among others listed above.

This table covers the seals at the Variable Valve Timing (VVT) Solenoid Gasket. 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

This group shows a single part: AJUSA 01907000.