2023 Lexus RX350 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

One part is listed for the 2023 Lexus RX350 — AJUSA 54339100.

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

4 Crankshaft Seal parts for the 2023 Lexus RX350 come from 2 brands — AJUSA and ELRING.

Listed part numbers: AJUSA 15121900, AJUSA 15092800 and ELRING 838030, plus the other parts above.

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

One part is listed for the 2023 Lexus RX350 — AJUSA 81087500.

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

2 Cylinder Head Gasket parts are listed for the 2023 Lexus RX350, from AJUSA and ELRING.

This group includes AJUSA 10276100 and ELRING B09060.

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 2023 Lexus RX350 — AJUSA 52657200.

This table covers the Engine covers. Read more

TECHPRO supplies both parts for the 2023 Lexus RX350.

This group includes TECHPRO LX1228181 and TECHPRO LX1228182.

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 2023 Lexus RX350 — AJUSA 50583700.

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

2 Intake Manifold Gasket parts are listed for the 2023 Lexus RX350, from AJUSA and ELRING.

Part numbers include AJUSA 13347700 and ELRING B09080.

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 for the 2023 Lexus RX350 come from 3 brands — ANCHOR, DEA / MARMON RIDE CONTROL and PIONEER. The "Popular" part is ANCHOR 10210.

This group includes ANCHOR 10210, ANCHOR 10379 and DEA / MARMON RIDE CONTROL A42180 and the remaining 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

33 Oil parts for the 2023 Lexus RX350 come from 6 brands — VALVOLINE, LIQUI MOLY, MOBIL and 3 other brands. The "Popular" part is LIQUI MOLY 2208. Grades run from Full Synthetic through High Mileage (>75,000 Miles); Full Synthetic is the most populated section, led by LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands.

This table covers the seals at the Oil Dipstick / Tube. 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 2023 Lexus RX350 — BECK/ARNLEY 0396661.

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

6 Oil Drain Plug parts for the 2023 Lexus RX350 come from 4 brands — DORMAN, ELRING, BECK/ARNLEY and 1 other brand. The "Popular" part is DORMAN 090038.

Part numbers include DORMAN 090038, DORMAN 090049 and BECK/ARNLEY 0160116, 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

3 Oil Drain Plug Gasket parts are listed for the 2023 Lexus RX350, from AJUSA, DORMAN and ELRING.

Part numbers include AJUSA 22005800, DORMAN 095156 and ELRING 473500.

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

3 Oil Filler Cap parts for the 2023 Lexus RX350 come from 3 brands — CALORSTAT, GATES and MOTORAD.

Listed part numbers: CALORSTAT OC2312, GATES 31285 and MOTORAD MO155.

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

15 Oil Filter parts for the 2023 Lexus RX350 come from 12 brands — VARIOUS MFR, BOSCH, FRAM and 9 other brands. The "Popular" part is VARIOUS MFR PG4476.

The Economy section lists 6 options from VARIOUS MFR, BOSCH, FRAM and 2 other brands — the catalog's value-priced group. VARIOUS MFR PG4476 is listed in this group.

The High Performance / Heavy Duty section lists 1 option from MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1103A is listed in this group.

In the Standard Replacement grade, ACDELCO, BECK/ARNLEY, BOSCH and 5 other brands supply 8 parts: built to original-equipment specification. A representative part number is ACDELCO PF1233.

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

2 Oil Pump Chain parts are listed for the 2023 Lexus RX350, from JAPANESE OE and MELLING.

Listed part numbers: JAPANESE OE A05095AM and MELLING 1110.

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 for the 2023 Lexus RX350 come from 2 brands — MELLING and PREFERRED COMPONENTS INC.

This group includes MELLING BT7064 and PREFERRED COMPONENTS INC T66361.

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

2 Timing Chain parts are listed for the 2023 Lexus RX350, from JAPANESE OE and MELLING.

This group includes JAPANESE OE A05094AM and MELLING 1109.

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

2 Timing Chain & Component Kit parts for the 2023 Lexus RX350 come from MELLING.

This group includes MELLING 31109SAX and MELLING 31109SX.

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

MELLING supplies the 3 Timing Chain Guide / Damper parts for the 2023 Lexus RX350.

Listed part numbers: MELLING BG7070, MELLING BG7071 and MELLING BT7088.

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

This group shows a single part: MELLING BT7089.

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 2023 Lexus RX350 — AJUSA JTC12790.

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

This group shows a single part: AJUSA OP11481.

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 2023 Lexus RX350 come from 2 brands — AJUSA and ELRING.

Listed part numbers: AJUSA 56097500 and ELRING B09650.

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

This group shows a single part: AJUSA 85022700.

This table covers the Valve Spring retainers. Read more

One part is listed for the 2023 Lexus RX350 — MELLING VSR726.

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

One part is listed for the 2023 Lexus RX350 — MELLING VL1100.

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 2023 Lexus RX350 come from AJUSA.

Part numbers include AJUSA 12027100, AJUSA 12036100 and AJUSA 57079000.

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

2 Variable Valve Timing (VVT) Solenoid / Actuator parts for the 2023 Lexus RX350 come from 2 brands — WELLS and STANDARD MOTOR PRODUCTS.

The Economy section: 1 option from WELLS. WELLS 2T1306 is listed in this group.

Standard Replacement: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS VVT847.

This group includes WELLS 2T1306 and STANDARD MOTOR PRODUCTS VVT847.