2018 Toyota Sienna 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

4 Connecting Rod Bearing parts for the 2018 Toyota Sienna come from 3 brands — KING ENGINE BEARINGS, ENGINETECH and TOPLINE.

Listed part numbers: ENGINETECH BB1035, KING ENGINE BEARINGS CR6873SM and KING ENGINE BEARINGS CR6873MC, plus the other parts above.

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

2 Conversion / Lower Gasket Set parts for the 2018 Toyota Sienna come from 2 brands — AJUSA and TOPLINE.

Listed part numbers: AJUSA 54318100 and TOPLINE CBSTO49L.

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 are listed for the 2018 Toyota Sienna, from TOPLINE and MAHLE / CLEVITE.

Part numbers include MAHLE / CLEVITE MS2357A, TOPLINE MBTO49 and TOPLINE TWTO49.

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

3 Crankshaft Repair Sleeve parts are listed for the 2018 Toyota Sienna, from BCA, NATIONAL and WJB / INMOTION PARTS.

This group includes BCA NS99166, NATIONAL 99166 and WJB / INMOTION PARTS WS99166.

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

13 Crankshaft Seal parts are listed for the 2018 Toyota Sienna, from FEL-PRO, NATIONAL, WJB / INMOTION PARTS and 5 other brands. FEL-PRO BS40701 carries the "Popular" badge.

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

3 Cylinder Head Bolt parts for the 2018 Toyota Sienna come from 3 brands — APEX, FEL-PRO and TOPLINE.

Listed part numbers: APEX AHB871, FEL-PRO ES72249 and TOPLINE HBTO47.

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 for the 2018 Toyota Sienna come from 4 brands — AJUSA, APEX, FEL-PRO and 1 other brand. The "Popular" part is APEX AHG890L.

Listed part numbers: APEX AHG890L, APEX AHG890R and AJUSA 10237100, 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 for the 2018 Toyota Sienna come from 3 brands — AJUSA, MAHLE / CLEVITE and TOPLINE.

This group includes AJUSA 52528100, MAHLE / CLEVITE HS55518 and TOPLINE HSTO49L.

This table covers the Engine covers. Read more

5 Engine Cover parts for the 2018 Toyota Sienna come from 2 brands — TECHPRO and VARIOUS MFR. The "Popular" part is TECHPRO TO1228174.

Listed part numbers: TECHPRO TO1228174, TECHPRO LX1228131 and TECHPRO LX1228166, plus the other parts 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

2 Engine Kit Gasket Set parts for the 2018 Toyota Sienna come from 2 brands — AJUSA and TOPLINE.

Part numbers include AJUSA 50542400 and TOPLINE CGSTO49L.

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

3 Exhaust Valve parts are listed for the 2018 Toyota Sienna, from MELLING, SBI and TOPLINE.

Listed part numbers: MELLING V3087, SBI 13087 and TOPLINE EVTO49.

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

2 Fuel Pump Camshaft Follower parts for the 2018 Toyota Sienna come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.

Part numbers include STANDARD MOTOR PRODUCTS GDF504 and WELLS 5T5023.

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

2 Harmonic Balancer parts for the 2018 Toyota Sienna come from 2 brands — ATP and PIONEER.

Listed part numbers: ATP 102031 and PIONEER DA2031.

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

3 Intake Manifold Gasket parts for the 2018 Toyota Sienna come from 3 brands — AJUSA, FEL-PRO and MAHLE / CLEVITE.

Listed part numbers: AJUSA 13255600, FEL-PRO MS97437 and MAHLE / CLEVITE MS20626.

This table covers the gaskets that seal the Intake Plenum. 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 Plenum Gasket parts are listed for the 2018 Toyota Sienna, from AJUSA and MAHLE / CLEVITE.

Part numbers include AJUSA 01645000 and MAHLE / CLEVITE MS20627.

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

4 Intake Valve parts are listed for the 2018 Toyota Sienna, from MELLING, QUALCAST, SBI and 1 other brand.

This group includes MELLING V3086, QUALCAST 1013086 and SBI 13086 and the remaining parts 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 are listed for the 2018 Toyota Sienna, from ANCHOR, WESTAR, SKP and 3 other brands. ANCHOR 9591 carries the "Popular" badge.

In the Economy grade, SKP supplies 1 part: the catalog's value-priced group. A representative part number is SKP SKM9238.

The Standard Replacement section lists 9 options from ANCHOR, WESTAR, BECK/ARNLEY and 2 other brands — built to original-equipment specification. ANCHOR 9591 is listed in this group.

This table covers the Motor Mount kits. Read more

ANCHOR supplies both parts for the 2018 Toyota Sienna.

This group includes ANCHOR 300430 and ANCHOR 300428.

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

29 Oil parts are listed for the 2018 Toyota Sienna, from VALVOLINE, LIQUI MOLY, MOBIL and 2 other brands. LIQUI MOLY 22044 carries the "Popular" badge. 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 2 other brands.

This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant. Read more

2 Oil Cooler parts are listed for the 2018 Toyota Sienna, from ACKOJA and NISSENS.

This group includes ACKOJA A70600029 and NISSENS 91378.

This table covers the gaskets that seal the Oil Cooler. 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: MAHLE / CLEVITE B33839.

This table covers the Oil Cooler Hose pipes. Read more

One part is listed for the 2018 Toyota Sienna — STANDARD MOTOR PRODUCTS EOC001.

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

6 Oil Cooler Line parts are listed for the 2018 Toyota Sienna, from DORMAN, AUTOTECNICA, SKP and 2 other brands. DORMAN 625519 carries the "Popular" badge.

Listed part numbers: DORMAN 625519, AUTOTECNICA TY1418804 and DORMAN 625022, plus the other parts above.

This table covers the Oil Dipstick tubes. Read more

One part is listed for the 2018 Toyota Sienna — DORMAN 921142.

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

4 Oil Drain Plug parts are listed for the 2018 Toyota Sienna, from AGS, BECK/ARNLEY, DORMAN and 1 other brand.

Listed part numbers: AGS ODP00011, BECK/ARNLEY 0160116 and DORMAN 090049, plus the other 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 for the 2018 Toyota Sienna come from 5 brands — DORMAN, APEX, FEL-PRO and 2 other brands. The "Popular" part is DORMAN 095156.

Part numbers include DORMAN 095156, APEX ADP1902 and FEL-PRO 70822, among others listed above.

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

4 Oil Filler Cap parts are listed for the 2018 Toyota Sienna, from CALORSTAT, DORMAN, GATES and 1 other brand.

This group includes CALORSTAT OC2312, DORMAN 84111 and GATES 31285 and the remaining parts above.

This table covers the gaskets that seal the Oil Filler Cap. 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 00519100.

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 are listed for the 2018 Toyota Sienna, from VARIOUS MFR, WIX, PRO-TEC and 11 other brands. PRO-TEC PXL57047 carries the "Popular" badge.

Economy: 6 parts, from PRO-TEC, BOSCH, FRAM and 3 other brands. A representative part number is PRO-TEC PXL57047.

In the High Performance / Heavy Duty grade, WIX and MOBIL 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 WIX 57047XP.

The Standard Replacement section: 8 options from ACDELCO, WIX, BECK/ARNLEY and 5 other brands. ACDELCO PF2259 is listed in this group.

This table covers the Oil Filter covers. Read more

6 Oil Filter Cover parts for the 2018 Toyota Sienna come from 5 brands — MOTORAD, DORMAN, SKP and 2 other brands. The "Popular" part is DORMAN 917016.

This group includes DORMAN 917016, SKP SK917016 and AUTOTECNICA TY1420831 and the remaining parts 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

One part is listed for the 2018 Toyota Sienna — VEMO V70720483.

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

3 Oil Pan parts for the 2018 Toyota Sienna come from 2 brands — ACKOJA and DORMAN.

Part numbers include ACKOJA A700991, ACKOJA A700989 and DORMAN 266003.

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 are listed for the 2018 Toyota Sienna, from AUTOTECNICA and VICTOR REINZ.

Listed part numbers: AUTOTECNICA TY1415891 and VICTOR REINZ 703141410.

This table covers the Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit. Read more

One part is listed for the 2018 Toyota Sienna — MELLING M581.

This table covers the O-rings that seal the oil-pump pickup tube. 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 2018 Toyota Sienna — FEL-PRO 73595.

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 PATO49L.

This table covers the Piston Pin bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

One part is listed for the 2018 Toyota Sienna — TOPLINE PBD34.

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

This group shows a single part: TOPLINE RSTO49.

This table covers the Thrust washers. Read more

One part is listed for the 2018 Toyota Sienna — KING ENGINE BEARINGS TW1036AM.

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

8 Timing Chain parts for the 2018 Toyota Sienna come from 5 brands — MELLING, CLOYES, S.A. GEAR and 2 other brands. The "Popular" part is AISIN ETCT007.

This group includes AISIN ETCT007, MELLING 1026 and CLOYES 94216 and the remaining parts above.

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

5 Timing Chain & Component Kit parts are listed for the 2018 Toyota Sienna, from S.A. GEAR, CLOYES and MELLING. CLOYES 90953S carries the "Popular" badge.

Economy: 2 parts, from S.A. GEAR. A representative part number is S.A. GEAR 76416S.

The Standard Replacement section: 3 options from CLOYES and MELLING. CLOYES 90953S is listed in this group.

Part numbers include CLOYES 90953S, S.A. GEAR 76416S and S.A. GEAR 76416, among others listed above.

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

9 Timing Chain Guide / Damper parts for the 2018 Toyota Sienna come from 3 brands — CLOYES, MELLING and S.A. GEAR. The "Popular" part is CLOYES 96046.

Part numbers include CLOYES 96046, CLOYES 96050 and CLOYES 96049, among others listed 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

9 Timing Chain Tensioner parts are listed for the 2018 Toyota Sienna, from S.A. GEAR, CLOYES and MELLING. S.A. GEAR 91356 carries the "Popular" badge.

Part numbers include S.A. GEAR 91356, S.A. GEAR 91358 and CLOYES 96047, among others listed above.

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

2 Timing Crank Sprocket parts are listed for the 2018 Toyota Sienna, from CLOYES and S.A. GEAR.

Listed part numbers: CLOYES S1403 and S.A. GEAR S1524.

This table covers the Timing Idler sprockets. Read more

2 Timing Idler Sprocket parts for the 2018 Toyota Sienna come from 2 brands — CLOYES and S.A. GEAR.

Listed part numbers: CLOYES S1402 and S.A. GEAR S1477.

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

8 Torque Strut Mount parts for the 2018 Toyota Sienna come from 4 brands — ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand. The "Popular" part is ANCHOR 9822.

Part numbers include ANCHOR 9822, DEA / MARMON RIDE CONTROL A42092 and ANCHOR 10075, among others listed above.

This table covers the Valve covers. Read more

5 Valve Cover parts for the 2018 Toyota Sienna come from 4 brands — APEX, DORMAN, AUTOTECNICA and 1 other brand. The "Popular" part is DORMAN 264498.

This group includes DORMAN 264498, APEX VCS890R and APEX VCS843L and the remaining 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

6 Valve Cover Gasket parts are listed for the 2018 Toyota Sienna, from VICTOR REINZ and BECK/ARNLEY. BECK/ARNLEY 0362110 carries the "Popular" badge.

This group includes BECK/ARNLEY 0362110, BECK/ARNLEY 0362111 and VICTOR REINZ 712047400 and the remaining parts 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 2018 Toyota Sienna, from SBI and TOPLINE.

Listed part numbers: SBI 1403135, SBI 1403218 and TOPLINE EVGTO55, plus the other parts above.

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

3 Valve Lifter parts are listed for the 2018 Toyota Sienna, from AJUSA, SEALED POWER and TOPLINE.

Part numbers include AJUSA 85010900, SEALED POWER HT2307 and TOPLINE A2319.

This table covers the Valve seats. Read more

2 Valve Seat parts for the 2018 Toyota Sienna come from SBI.

This group includes SBI SB1288E1 and SBI SB1527E1.

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

This group shows a single part: MELLING VS2506.

This table covers the Valve Spring retainers. Read more

This group shows a single part: MELLING VSR726.

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

2 Valve Spring Retainer Keeper parts for the 2018 Toyota Sienna come from 2 brands — MELLING and SBI.

Listed part numbers: MELLING VL1100 and SBI 1211100.

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

5 Valve Stem Seal parts are listed for the 2018 Toyota Sienna, from SBI, FEL-PRO, APEX and 1 other brand. FEL-PRO SS728783 carries the "Popular" badge.

This group includes FEL-PRO SS728783, APEX AVS8048 and SBI 1221266 and the remaining 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 2018 Toyota Sienna, from STANDARD MOTOR PRODUCTS, WELLS and ACKOJA.

Economy: 1 part, from WELLS. A representative part number is WELLS 2T1307.

The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS and ACKOJA. ACKOJA A701037 is listed in this group.

Part numbers include WELLS 2T1307, ACKOJA A701037 and STANDARD MOTOR PRODUCTS VVT379, among others listed above.

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

7 Variable Valve Timing (VVT) Sprocket parts are listed for the 2018 Toyota Sienna, from ACKOJA, STANDARD MOTOR PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS VVT653 carries the "Popular" badge.

Listed part numbers: STANDARD MOTOR PRODUCTS VVT653, STANDARD MOTOR PRODUCTS VVT651 and ACKOJA A701008, plus the other parts above.