2021 Acura RDX 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

2 Connecting Rod Bearing parts for the 2021 Acura RDX come from 2 brands — ENGINETECH and TOPLINE.

This group includes ENGINETECH BB1002 and TOPLINE RBH53.

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

3 Conversion / Lower Gasket Set parts for the 2021 Acura RDX come from 3 brands — AJUSA, ENGINETECH and TOPLINE.

Part numbers include AJUSA 54314300, ENGINETECH HO24CSA and TOPLINE CBSH46.

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

TOPLINE supplies both parts for the 2021 Acura RDX.

This group includes TOPLINE MBH53L and TOPLINE TWH53.

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

One part is listed for the 2021 Acura RDX — 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

5 Crankshaft Seal parts are listed for the 2021 Acura RDX, from AJUSA, FEL-PRO, MAHLE / CLEVITE and 1 other brand. FEL-PRO BS40535 carries the "Popular" badge.

Part numbers include FEL-PRO BS40535, AJUSA 15035700 and AJUSA 15097100, among others listed above.

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

This group shows a single part: AJUSA 81079400.

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

3 Cylinder Head Gasket parts for the 2021 Acura RDX come from 3 brands — AJUSA, ELRING and FEL-PRO.

Part numbers include AJUSA 10255200, ELRING 159350 and FEL-PRO 26776PT.

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 52632800.

This table covers the Engine covers. Read more

2 Engine Cover parts for the 2021 Acura RDX come from VARIOUS MFR.

Part numbers include VARIOUS MFR AC1228123 and VARIOUS MFR AC1228124.

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 50562300.

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

One part is listed for the 2021 Acura RDX — TOPLINE EVH53L.

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

4 Intake Manifold Gasket parts for the 2021 Acura RDX come from 4 brands — AJUSA, ELRING, FEL-PRO and 1 other brand.

This group includes AJUSA 13355100, ELRING 068630 and FEL-PRO MS97595 and the remaining parts 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

One part is listed for the 2021 Acura RDX — TOPLINE IVH53L.

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

3 Motor Mount parts are listed for the 2021 Acura RDX, from ANCHOR, DEA / MARMON RIDE CONTROL and WESTAR.

This group includes ANCHOR 10278, DEA / MARMON RIDE CONTROL A65162 and WESTAR EM7670.

This table covers the Motor Mount kits. Read more

One part is listed for the 2021 Acura RDX — ANCHOR 300979.

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

38 Oil parts are listed for the 2021 Acura RDX, from LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands. LIQUI MOLY 2208 carries the "Popular" badge. They are grouped as Full Synthetic and High Mileage (>75,000 Miles), with Full Synthetic the largest group at 31 parts from LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands.

This table covers the Oil Cooler Mounting kits. Read more

2 Oil Cooler Mounting Kit parts for the 2021 Acura RDX come from HAYDEN.

This group includes HAYDEN 238 and HAYDEN 153.

This table covers the Oil Dipstick tubes. Read more

One part is listed for the 2021 Acura RDX — DORMAN 9175509.

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

5 Oil Drain Plug parts are listed for the 2021 Acura RDX, from DORMAN, ACKOJA, REIN and 1 other brand. DORMAN 090053 carries the "Popular" badge.

Part numbers include DORMAN 090053, ACKOJA A260253 and DORMAN 090033, among others listed 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 for the 2021 Acura RDX come from 5 brands — DORMAN, AJUSA, APEX and 2 other brands. The "Popular" part is DORMAN 095144.

Listed part numbers: DORMAN 095144, AJUSA 22007400 and APEX ADP1909, plus the other parts above.

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

3 Oil Filler Cap parts are listed for the 2021 Acura RDX, from CALORSTAT, GATES and MOTORAD.

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

18 Oil Filter parts are listed for the 2021 Acura RDX, from VARIOUS MFR, BOSCH, WIX and 11 other brands. MOBIL M1110A carries the "Popular" badge.

In the Economy grade, VARIOUS MFR, BOSCH, FRAM and 2 other brands supply 6 parts: the catalog's value-priced group. A representative part number is BOSCH 72226WS.

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 M1110A.

The Standard Replacement section lists 10 options from BOSCH, WIX, ACKOJA and 7 other brands — built to original-equipment specification. BOSCH 3323 is listed in this group.

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

2 Oil Pan parts for the 2021 Acura RDX come from 2 brands — DORMAN and SPECTRA PREMIUM.

This group includes DORMAN 266026 and SPECTRA PREMIUM HOP44A.

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 Acura RDX — VICTOR REINZ 703141410.

This table covers the chains that drive the oil pump. Read more

2 Oil Pump Chain parts for the 2021 Acura RDX come from 2 brands — CLOYES and S.A. GEAR.

Listed part numbers: CLOYES C970 and S.A. GEAR C1182.

This table covers the Oil Pump Chain 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

2 Oil Pump Chain Tensioner parts are listed for the 2021 Acura RDX, from CLOYES and S.A. GEAR.

Part numbers include CLOYES 96095 and S.A. GEAR 91352.

This table covers the Oil Pump sprockets. Read more

2 Oil Pump Sprocket parts for the 2021 Acura RDX come from S.A. GEAR.

Part numbers include S.A. GEAR S1431 and S.A. GEAR S1475.

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

This group shows a single part: TOPLINE PAH53L.

This table covers the timing chains that keep the cams in time with the crank. Read more

2 Timing Chain parts for the 2021 Acura RDX come from 2 brands — CLOYES and S.A. GEAR.

This group includes CLOYES C969 and S.A. GEAR C1181.

This table covers kits that group a timing chain with the related tensioners and guides. Read more

4 Timing Chain & Component Kit parts are listed for the 2021 Acura RDX, from CLOYES, S.A. GEAR and TOPLINE.

Economy: 1 part, from S.A. GEAR. A representative part number is S.A. GEAR 76412.

The Standard Replacement section: 3 options from CLOYES and TOPLINE. CLOYES 90969SAX is listed in this group.

Part numbers include S.A. GEAR 76412, CLOYES 90969SAX and CLOYES 90969SA, among others listed above.

This table covers the guides and dampers that keep the timing chain on its path. Read more

8 Timing Chain Guide / Damper parts for the 2021 Acura RDX come from 2 brands — CLOYES and S.A. GEAR. The "Popular" part is CLOYES 95993.

Listed part numbers: CLOYES 95993, S.A. GEAR 71219 and CLOYES 96098, plus the other parts above.

This table covers the tensioners that keep the timing chain taut. 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

4 Timing Chain Tensioner parts are listed for the 2021 Acura RDX, from CLOYES, MELLING, PREFERRED COMPONENTS INC and 1 other brand.

This group includes CLOYES 95988, MELLING BT7057 and PREFERRED COMPONENTS INC T60310 and the remaining parts above.

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 Acura RDX — MAHLE / CLEVITE JV5277.

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

One part is listed for the 2021 Acura RDX — SKF 99182.

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 Acura RDX, from MAHLE / CLEVITE and SKF.

This group includes MAHLE / CLEVITE 68064 and SKF 16896.

This table covers the crankshaft sprockets that drive the timing chain or belt. Read more

2 Timing Crank Sprocket parts are listed for the 2021 Acura RDX, from CLOYES and S.A. GEAR.

This group includes CLOYES S1115 and S.A. GEAR S1430.

This table covers the Torque Strut mounts. 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 Torque Strut Mount parts for the 2021 Acura RDX come from 4 brands — ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand. The "Popular" part is ANCHOR 10277.

Listed part numbers: ANCHOR 10277, ANCHOR 10261 and DEA / MARMON RIDE CONTROL A65163, plus the other parts above.

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

3 Turbocharger parts are listed for the 2021 Acura RDX, from GPD and ROTOMASTER.

This group includes GPD 2511723, GPD 2511639 and ROTOMASTER J1050116N.

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

2 Turbocharger Boost Sensor parts for the 2021 Acura RDX come from 2 brands — WELLS and HELLA.

The Economy section: 1 option from WELLS. WELLS 5S15125 is listed in this group.

Standard Replacement: 1 part, from HELLA. A representative part number is HELLA 009403361.

Part numbers include WELLS 5S15125 and HELLA 009403361.

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

This group shows a single part: AJUSA JTC12749.

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

One part is listed for the 2021 Acura RDX — AJUSA OP11372.

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 2021 Acura RDX — MAHLE / CLEVITE B33874.

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

5 Valve Cover Gasket parts are listed for the 2021 Acura RDX, from BECK/ARNLEY, AJUSA, FEL-PRO and 2 other brands. BECK/ARNLEY 0362096 carries the "Popular" badge.

Part numbers include BECK/ARNLEY 0362096, AJUSA 56083900 and FEL-PRO VS50975R, among others listed above.

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

4 Valve Guide parts are listed for the 2021 Acura RDX, from ENGINETECH, QUALCAST, SBI and 1 other brand.

Listed part numbers: ENGINETECH GD8158, QUALCAST 308158 and SBI 1408158, plus the other parts above.

This table covers the Valve Spring retainers. Read more

This group shows a single part: MELLING VSR731.

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

3 Valve Spring Retainer Keeper parts for the 2021 Acura RDX come from 3 brands — MELLING, QUALCAST and SBI.

This group includes MELLING VL1060, 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

6 Valve Stem Seal parts are listed for the 2021 Acura RDX, from MAHLE / CLEVITE, FEL-PRO, AJUSA and 2 other brands. FEL-PRO SS702831 carries the "Popular" badge.

Listed part numbers: FEL-PRO SS702831, MAHLE / CLEVITE SS45626 and AJUSA 57030200, plus the other parts above.

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

4 Variable Valve Timing (VVT) Solenoid / Actuator parts are listed for the 2021 Acura RDX, from WELLS and STANDARD MOTOR PRODUCTS.

Economy: 2 parts, from WELLS. A representative part number is WELLS 2T1275.

The Standard Replacement section: 2 options from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS VVT361 is listed in this group.

Listed part numbers: WELLS 2T1275, WELLS 2T1276 and STANDARD MOTOR PRODUCTS VVT361, plus the other parts above.

This table covers the cam phaser sprockets used by the variable-valve-timing system. Read more

3 Variable Valve Timing (VVT) Sprocket parts are listed for the 2021 Acura RDX, from STANDARD MOTOR PRODUCTS and ACKOJA.

Listed part numbers: ACKOJA A260299, STANDARD MOTOR PRODUCTS VVT598 and STANDARD MOTOR PRODUCTS VVT595.

This table covers the Variable Valve Timing (VVT) Sprocket bolts. Read more

This group shows a single part: CLOYES VCB132.