2020 Infiniti Q50 Engine Parts

This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

One part is listed for the 2020 Infiniti Q50 — TOPLINE RBD41HR.

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

One part is listed for the 2020 Infiniti Q50 — AJUSA 54338800.

This table covers the main bearings that support the crankshaft in the block. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

5 Crankshaft Main Bearing parts for the 2020 Infiniti Q50 come from 2 brands — KING ENGINE BEARINGS and TOPLINE. The "Popular" part is TOPLINE MBD41HR.

The High Performance section lists 2 options from KING ENGINE BEARINGS — engineered beyond original-equipment specification. KING ENGINE BEARINGS MB4524XPC is listed in this group.

In the Standard Replacement grade, TOPLINE and KING ENGINE BEARINGS supply 3 parts: built to original-equipment specification. A representative part number is TOPLINE MBD41HR.

Part numbers include TOPLINE MBD41HR, KING ENGINE BEARINGS MB4524XPC and KING ENGINE BEARINGS MB4524XPCX, among others listed above.

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

5 Crankshaft Seal parts for the 2020 Infiniti Q50 come from 4 brands — AJUSA, FEL-PRO, JAPANESE OE and 1 other brand. The "Popular" part is FEL-PRO BS40694.

This group includes FEL-PRO BS40694, AJUSA 15060100 and AJUSA 15092900 and the remaining parts above.

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

2 Cylinder Head Bolt parts are listed for the 2020 Infiniti Q50, from AJUSA and TOPLINE.

Listed part numbers: AJUSA 81086100 and TOPLINE HBD34.

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 Infiniti Q50.

This group includes AJUSA 10275500, AJUSA 10275600 and AJUSA 52654300 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

One part is listed for the 2020 Infiniti Q50 — AJUSA 52654200.

This table covers the Engine covers. Read more

5 Engine Cover parts are listed for the 2020 Infiniti Q50, from VARIOUS MFR and TECHPRO. TECHPRO IN1228131 carries the "Popular" badge.

Part numbers include TECHPRO IN1228131, TECHPRO IN1228132 and VARIOUS MFR IN1228130, among others listed above.

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

One part is listed for the 2020 Infiniti Q50 — AJUSA 50582800.

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

AJUSA supplies both parts for the 2020 Infiniti Q50.

Listed part numbers: AJUSA 13347100 and AJUSA 13347200.

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

9 Motor Mount parts for the 2020 Infiniti Q50 come from 5 brands — DEA / MARMON RIDE CONTROL, ANCHOR, PIONEER and 2 other brands. The "Popular" part is SKP SKM9774.

The Economy section lists 1 option from SKP — the catalog's value-priced group. SKP SKM9774 is listed in this group.

Standard Replacement: 8 parts, from DEA / MARMON RIDE CONTROL, ANCHOR, PIONEER and 1 other brand. A representative part number is DEA / MARMON RIDE CONTROL A4370.

Listed part numbers: SKP SKM9774, DEA / MARMON RIDE CONTROL A4370 and ANCHOR 9774, plus the other parts above.

This table covers the Motor Mount kits. Read more

This group shows a single part: ANCHOR 301058.

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

34 Oil parts for the 2020 Infiniti Q50 come from 6 brands — VALVOLINE, LIQUI MOLY, MOBIL and 3 other brands. The "Popular" part is LIQUI MOLY 2208. They are grouped as Full Synthetic and High Mileage (>75,000 Miles), with Full Synthetic the largest group at 27 parts from LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands.

This table covers the Oil Cooler 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

4 Oil Cooler Line parts for the 2020 Infiniti Q50 come from SUNSONG.

Listed part numbers: SUNSONG 5801908, SUNSONG 5801894 and SUNSONG 5801904, plus the other parts above.

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

5 Oil Drain Plug parts for the 2020 Infiniti Q50 come from 4 brands — DORMAN, AGS, BECK/ARNLEY and 1 other brand. The "Popular" part is DORMAN 090038.

This group includes DORMAN 090038, AGS ODP00011 and BECK/ARNLEY 0160116 and the remaining parts above.

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

5 Oil Drain Plug Gasket parts are listed for the 2020 Infiniti Q50, from DORMAN, AJUSA, FEL-PRO and 1 other brand. DORMAN 097134 carries the "Popular" badge.

Listed part numbers: DORMAN 097134, AJUSA 01140600 and DORMAN 997134CD, plus the other parts above.

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

3 Oil Filler Cap parts for the 2020 Infiniti Q50 come from 3 brands — GATES, MOTORAD and SKP.

This group includes GATES 31115, MOTORAD MO107 and SKP SKMO107.

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

16 Oil Filter parts for the 2020 Infiniti Q50 come from 13 brands — BOSCH, VARIOUS MFR, WIX and 10 other brands. The "Popular" part is CHAMP / LUBER-FINER PH2876.

The Economy section: 6 options from CHAMP / LUBER-FINER, BOSCH, FRAM and 3 other brands. CHAMP / LUBER-FINER PH2876 is listed in this group.

The High Performance / Heavy Duty section lists 2 options from MOBIL and WIX — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1108A is listed in this group.

Standard Replacement: 8 parts, from BOSCH, WIX, BECK/ARNLEY and 5 other brands. A representative part number is BOSCH 3300.

This table covers the oil pans that hold the engine's oil sump. Read more

4 Oil Pan parts are listed for the 2020 Infiniti Q50, from DORMAN and SPECTRA PREMIUM.

Part numbers include DORMAN 264864, DORMAN 264863 and SPECTRA PREMIUM NSP49A, among others listed above.

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

2 Oil Pan Gasket parts for the 2020 Infiniti Q50 come from 2 brands — AJUSA and VICTOR REINZ.

This group includes AJUSA 14123000 and VICTOR REINZ 703141410.

This table covers the Thrust washers. Read more

This group shows a single part: KING ENGINE BEARINGS TW1042AM.

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

This group shows a single part: SKF 18857.

This table covers the turbochargers that compress intake air. Read more

6 Turbocharger parts for the 2020 Infiniti Q50 come from 2 brands — GPD and ROTOMASTER. The "Popular" part is GPD 2511596.

Listed part numbers: GPD 2511596, GPD 2511605 and GPD 2511589, plus the other parts above.

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

One part is listed for the 2020 Infiniti Q50 — AJUSA JTC12789.

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

4 Turbocharger Oil Line parts for the 2020 Infiniti Q50 come from 2 brands — AJUSA and GATES.

Listed part numbers: AJUSA OP11415, AJUSA OP11465 and GATES TL285, plus the other parts above.

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 Infiniti Q50 come from AJUSA.

Listed part numbers: AJUSA 11181700 and AJUSA 11181800.

This table covers the keepers that lock each valve-spring retainer to the stem. Read more

3 Valve Spring Retainer Keeper parts are listed for the 2020 Infiniti Q50, from MELLING, QUALCAST and SBI.

This group includes MELLING VL730, QUALCAST 345012 and SBI 1211064.

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 Infiniti Q50 come from 2 brands — AJUSA and FEL-PRO.

Part numbers include AJUSA 12009100, AJUSA 57097900 and FEL-PRO SS72800.

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

11 Variable Valve Timing (VVT) Solenoid / Actuator parts for the 2020 Infiniti Q50 come from 9 brands — HOLSTEIN, STANDARD MOTOR PRODUCTS, DORMAN and 6 other brands. The "Popular" part is DORMAN 916725.

The Economy section: 4 options from HOLSTEIN, DORMAN and GATES. DORMAN 916725 is listed in this group.

Standard Replacement: 7 parts, from STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI, ACKOJA and 3 other brands. A representative part number is ASTEMO / HITACHI VTS0016.