2020 Acura RLX 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

4 Camshaft Seal parts for the 2020 Acura RLX come from 4 brands — AJUSA, APEX, ELRING and 1 other brand. 3 parts fit every engine; the other 1 is engine-specific.

Part numbers include AJUSA 15064200, APEX ATC1400 and ELRING 489890, among others listed above.

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

2 Connecting Rod Bearing parts are listed for the 2020 Acura RLX, from ENGINETECH and TOPLINE. 1 part fits every engine; the other 1 is engine-specific.

This group includes ENGINETECH BB3516 and TOPLINE RBH52.

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

7 Conversion / Lower Gasket Set parts are listed for the 2020 Acura RLX, from APEX, FEL-PRO, AJUSA and 4 other brands. APEX ACS1055 carries the "Popular" badge. 4 parts fit every engine; the other 3 are engine-specific.

Listed part numbers: APEX ACS1055, FEL-PRO CS26265 and AJUSA 54253700, plus the other parts above.

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

3 Crankshaft Main Bearing parts for the 2020 Acura RLX come from 2 brands — TOPLINE and ENGINETECH. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include ENGINETECH BC2208, TOPLINE TWH37 and TOPLINE MBH52.

This table covers the sleeves used to restore a grooved crankshaft seal surface. Read more

This group shows a single part: SKF 99313.

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

16 Crankshaft Seal parts for the 2020 Acura RLX come from 10 brands — ELRING, VICTOR REINZ, AJUSA and 7 other brands. The "Popular" part is ELRING 590797. 10 parts fit every engine; the other 6 are engine-specific.

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

6 Cylinder Head Bolt parts are listed for the 2020 Acura RLX, from ELRING, FEL-PRO, MAHLE / CLEVITE and 2 other brands. FEL-PRO ES713291 carries the "Popular" badge. 4 parts fit every engine; the other 2 are engine-specific.

This group includes FEL-PRO ES713291, MAHLE / CLEVITE GS33606 and AJUSA 81067500 and the remaining parts above.

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

9 Cylinder Head Gasket parts are listed for the 2020 Acura RLX, from MAHLE / CLEVITE, APEX, ELRING and 2 other brands. MAHLE / CLEVITE 55339 carries the "Popular" badge. 7 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: MAHLE / CLEVITE 55339, MAHLE / CLEVITE 55340 and APEX AHG176L, plus the other 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

3 Cylinder Head Gasket Set parts are listed for the 2020 Acura RLX, from AJUSA, MAHLE / CLEVITE and TOPLINE. 2 parts fit every engine; the other 1 is engine-specific.

This group includes AJUSA 52632000, MAHLE / CLEVITE HS55339 and TOPLINE HSH52A.

This table covers the block heaters that warm the coolant or oil in cold weather. Read more

This group shows a single part: KAT'S HEATERS 28500.

This table covers the Engine Cover grommets. Read more

This group shows a single part: DORMAN 49932.

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 are listed for the 2020 Acura RLX, from AJUSA and TOPLINE. All of them fit every engine offered in the 2020 RLX.

Part numbers include AJUSA 50561900 and TOPLINE CGSH52A.

This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

5 Exhaust Valve parts for the 2020 Acura RLX come from 4 brands — MELLING, QUALCAST, SBI and 1 other brand. The "Popular" part is MELLING V0779. 3 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: MELLING V0779, MELLING V0779IN and QUALCAST 1010779, plus the other parts above.

This table covers the followers that drive a mechanical fuel pump off the camshaft. Read more

2 Fuel Pump Camshaft Follower parts are listed for the 2020 Acura RLX, from STANDARD MOTOR PRODUCTS and WELLS. All of them fit every engine offered in the 2020 RLX.

Listed part numbers: STANDARD MOTOR PRODUCTS GDF503 and WELLS 5T5002.

This table covers the crankshaft pulleys / harmonic balancers at the front of the engine. Read more

2 Harmonic Balancer parts are listed for the 2020 Acura RLX, from ATP and DAYCO. All of them fit every engine offered in the 2020 RLX.

This group includes ATP 102367 and DAYCO PB1713N.

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

9 Intake Manifold Gasket parts are listed for the 2020 Acura RLX, from APEX, MAHLE / CLEVITE, ELRING and 1 other brand. APEX AMS1691 carries the "Popular" badge. 5 parts fit every engine; the other 4 are engine-specific.

Part numbers include APEX AMS1691, MAHLE / CLEVITE MS20320 and APEX AMS1762, among others listed above.

This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

5 Intake Valve parts for the 2020 Acura RLX come from 5 brands — MELLING, ENGINETECH, QUALCAST and 2 other brands. The "Popular" part is MELLING V0336. 3 parts fit every engine; the other 2 are engine-specific.

Part numbers include MELLING V0336, ENGINETECH IM4476 and QUALCAST 1013336, among others listed above.

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

10 Motor Mount parts for the 2020 Acura RLX come from 6 brands — DEA / MARMON RIDE CONTROL, ANCHOR, SKP and 3 other brands. The "Popular" part is SKP SKM9737. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

The Economy section lists 1 option from SKP — the catalog's value-priced group. SKP SKM9737 is listed in this group.

In the Standard Replacement grade, DEA / MARMON RIDE CONTROL, ANCHOR, BECK/ARNLEY and 2 other brands supply 9 parts: built to original-equipment specification. A representative part number is ANCHOR 9696.

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

36 Oil parts for the 2020 Acura RLX come from 6 brands — LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands. The "Popular" part is LIQUI MOLY 22044. Grades run from Full Synthetic through High Mileage (>75,000 Miles); Full Synthetic is the most populated section, led by LIQUI MOLY, VALVOLINE, PENTOSIN and 3 other brands.

This table covers the Oil Cooler Mounting kits. Read more

HAYDEN supplies both parts for the 2020 Acura RLX. All of them fit every engine offered in the 2020 RLX.

Listed part numbers: HAYDEN 238 and HAYDEN 153.

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

8 Oil Drain Plug parts for the 2020 Acura RLX come from 5 brands — DORMAN, AGS, ELRING and 2 other brands. The "Popular" part is DORMAN 090033. 6 parts fit every engine; the other 2 are engine-specific.

This group includes DORMAN 090033, DORMAN 090053 and AGS ODP00007 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

6 Oil Drain Plug Gasket parts are listed for the 2020 Acura RLX, from DORMAN, FEL-PRO, AJUSA and 3 other brands. DORMAN 095144 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.

Part numbers include DORMAN 095144, FEL-PRO 73346 and AJUSA 22007400, among others listed above.

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

3 Oil Filler Cap parts for the 2020 Acura RLX come from 3 brands — CALORSTAT, GATES and MOTORAD. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

This group includes CALORSTAT OC2335, GATES 31284 and MOTORAD MO159.

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

19 Oil Filter parts for the 2020 Acura RLX come from 15 brands — VARIOUS MFR, BOSCH, WIX and 12 other brands. The "Popular" part is MOBIL M1110A. 17 parts fit every engine; the other 2 are engine-specific.

The Economy section: 7 options from VARIOUS MFR, BOSCH, FRAM and 3 other brands. BOSCH 72226WS 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 M1110A is listed in this group.

Standard Replacement: 10 parts, from BOSCH, WIX, ACKOJA and 7 other brands. A representative part number is BOSCH 3323.

This table covers the Oil Filter Adapter 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

2 Oil Filter Adapter Gasket / O-Ring parts are listed for the 2020 Acura RLX, from FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO ES74047 and MAHLE / CLEVITE B33360.

This table covers the Oil Filter Support tubes. Read more

One part is listed for the 2020 Acura RLX — AUTOTECNICA HA1416938.

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

3 Oil Pan parts are listed for the 2020 Acura RLX, from DORMAN, SKP and SPECTRA PREMIUM.

This group includes DORMAN 264380, SKP SK264380 and SPECTRA PREMIUM HOP20A.

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 Acura RLX come from 2 brands — FEL-PRO and VICTOR REINZ. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

This group includes FEL-PRO OS30954T and VICTOR REINZ 703141410.

This table covers the seals at the Oil Pressure Sender / Switch. 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: FEL-PRO 73196.

This table covers the gaskets that seal the Oil Pump. 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 Pump Gasket parts are listed for the 2020 Acura RLX, from AJUSA and ELRING. 1 part fits every engine; the other 1 is engine-specific.

This group includes AJUSA 01130500 and ELRING 967650.

This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo. Read more

4 Piston parts are listed for the 2020 Acura RLX, from ENGINETECH and TOPLINE.

The Premium section lists 2 options from ENGINETECH — a step above OE specification in materials, tolerances or warranty terms. ENGINETECH P3552 is listed in this group.

The Standard Replacement section: 1 option from TOPLINE. TOPLINE PAH52A is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Part numbers include ENGINETECH P3552, ENGINETECH K35526P and TOPLINE PAH52A, among others listed above.

This table covers the rings that seal each piston to the cylinder wall. Read more

3 Piston Ring parts are listed for the 2020 Acura RLX, from TOPLINE and ENGINETECH.

The Premium section: 1 option from ENGINETECH. ENGINETECH C35046 is listed in this group.

The Standard Replacement section: 1 option from TOPLINE. TOPLINE RSH52A is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This group includes ENGINETECH C35046 and TOPLINE RSH52A and the remaining parts above.

This table covers the Timing belts. Typical signs include squeal on cold start, cracked ribs, or glazing. Spin the tensioner and idlers by hand while the belt is off. Read more

6 Timing Belt parts are listed for the 2020 Acura RLX, from CLOYES, BANDO, GATES and 3 other brands. BANDO TB329 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.

Economy: 1 part, from CLOYES. A representative part number is CLOYES B329.

The Standard Replacement section: 5 options from BANDO, GATES, ACDELCO and 2 other brands. BANDO TB329 is listed in this group.

Listed part numbers: BANDO TB329, CLOYES B329 and GATES T329, plus the other parts above.

This table covers the Timing Belt & component kits. Read more

11 Timing Belt & Component Kit parts for the 2020 Acura RLX come from 6 brands — CONTINENTAL, AISIN, GATES and 3 other brands. The "Popular" part is CONTINENTAL GTKWP329. 8 parts fit every engine; the other 3 are engine-specific.

The Economy section: 2 options from CONTINENTAL and CLOYES. CONTINENTAL GTKWP329 is listed in this group.

Standard Replacement: 9 parts, from AISIN, CONTINENTAL, GATES and 2 other brands. A representative part number is AISIN TKH002.

This table covers the Timing Belt pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

This group shows a single part: CLOYES 95508.

This table covers the Timing Belt tensioners. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

9 Timing Belt Tensioner parts for the 2020 Acura RLX come from 7 brands — GMB, GATES, AISIN and 4 other brands. The "Popular" part is AISIN BTH001. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

Part numbers include AISIN BTH001, GMB 4355767 and ACDELCO T43129, among others listed above.

This table covers the Timing Cover Dust Seal sets. Read more

This group shows a single part: MAHLE / CLEVITE JV5273.

This table covers the wear sleeves used to restore a Timing Cover seal surface. Read more

This group shows a single part: SKF 99169.

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 16473.

This table covers the Timing idlers. Typical signs include a chirp that follows engine speed, or an idler that feels rough or has play. Replace a noisy idler with the belt — the labor is already paid for. Read more

7 Timing Idler parts for the 2020 Acura RLX come from 7 brands — DORMAN, GMB, CLOYES and 4 other brands. The "Popular" part is DORMAN 15011. Every part fits both the 3.5L V6 and the 3.5L V6 ELECTRIC/GAS.

Part numbers include DORMAN 15011, GMB 4359730 and CLOYES 95509, among others listed 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

10 Valve Cover Gasket parts for the 2020 Acura RLX come from 5 brands — BECK/ARNLEY, MAHLE / CLEVITE, AJUSA and 2 other brands. The "Popular" part is BECK/ARNLEY 0362072. 4 parts fit every engine; the other 6 are engine-specific.

This table covers the pressed-in bronze and cast-iron guides that align valve stems. Typical signs include oil smoke on startup, a guide that has gone oval, or a valve that no longer seats quietly. Guides are a machine-shop fit. Confirm stem diameter in the notes before ordering. Read more

6 Valve Guide parts for the 2020 Acura RLX come from 4 brands — SBI, TOPLINE, ENGINETECH and 1 other brand. The "Popular" part is ENGINETECH GD8158. 5 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: ENGINETECH GD8158, SBI 1408157 and QUALCAST 308157, plus the other parts above.

This table covers the springs that close each intake and exhaust valve. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats. Read more

MELLING supplies both parts for the 2020 Acura RLX. All of them fit every engine offered in the 2020 RLX.

Part numbers include MELLING VS2501 and MELLING VS2502.

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

2 Valve Spring Retainer Keeper parts are listed for the 2020 Acura RLX, from QUALCAST and SBI. All of them fit every engine offered in the 2020 RLX.

This group includes QUALCAST 345008 and SBI 1211060.

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

12 Valve Stem Seal parts for the 2020 Acura RLX come from 8 brands — ELRING, MAHLE / CLEVITE, SBI and 5 other brands. The "Popular" part is ENGINETECH S592V. 7 parts fit every engine; the other 5 are engine-specific.