2021 Toyota Prius Prime 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

This group shows a single part: TOPLINE RBTO55.

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 2021 Toyota Prius Prime come from 2 brands — AJUSA and TOPLINE.

Listed part numbers: AJUSA 54308500 and TOPLINE CBSTO55.

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 Toyota Prius Prime.

This group includes TOPLINE TWTO39 and TOPLINE MBTO55.

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 are listed for the 2021 Toyota Prius Prime, from AJUSA, SKF and VICTOR REINZ.

This group includes AJUSA 15062600, AJUSA 15092600 and SKF 30775 and the remaining parts above.

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

3 Cylinder Head Bolt parts for the 2021 Toyota Prius Prime come from 3 brands — BECK/ARNLEY, SKP and TOPLINE.

Part numbers include BECK/ARNLEY 0161075, SKP SKES72434 and TOPLINE HBTO55.

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

This group shows a single part: AJUSA 10258600.

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 2021 Toyota Prius Prime come from 3 brands — AJUSA, TOPLINE and VICTOR REINZ.

This group includes AJUSA 52593400, TOPLINE HSTO55 and VICTOR REINZ 021130001.

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

One part is listed for the 2021 Toyota Prius Prime — MOTORAD TA9207.

This table covers the Engine covers. Read more

9 Engine Cover parts for the 2021 Toyota Prius Prime come from 2 brands — TECHPRO and VARIOUS MFR. The "Popular" part is TECHPRO TO1228246.

Listed part numbers: TECHPRO TO1228246, TECHPRO TO1228287 and TECHPRO TO1228267, 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

3 Engine Kit Gasket Set parts for the 2021 Toyota Prius Prime come from 3 brands — AJUSA, TOPLINE and VICTOR REINZ.

Listed part numbers: AJUSA 50542000, TOPLINE CGSTO55 and VICTOR REINZ 011130001.

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 2021 Toyota Prius Prime, from MELLING, SBI and TOPLINE.

Listed part numbers: MELLING V3366, SBI 13366 and TOPLINE EVTO55.

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

2 Harmonic Balancer parts for the 2021 Toyota Prius Prime come from 2 brands — DAYCO and ULTRA-POWER.

Listed part numbers: DAYCO PB1653N and ULTRA-POWER 594404.

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

This group shows a single part: BECK/ARNLEY 0376229.

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 2021 Toyota Prius Prime, from ENGINETECH, MELLING, SBI and 1 other brand.

Part numbers include ENGINETECH IM4472, MELLING V3365 and SBI 13365, 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

7 Motor Mount parts are listed for the 2021 Toyota Prius Prime, from ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand. ANCHOR 10169 carries the "Popular" badge.

Listed part numbers: ANCHOR 10169, ANCHOR 10177 and DEA / MARMON RIDE CONTROL A42129, plus the other parts above.

This table covers the Motor Mount kits. Read more

One part is listed for the 2021 Toyota Prius Prime — ANCHOR 300927.

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

9 Oil parts are listed for the 2021 Toyota Prius Prime, from LIQUI MOLY, VALVOLINE, IDEMITSU and 1 other brand. LIQUI MOLY 20328 carries the "Popular" badge.

In the Full Synthetic grade, LIQUI MOLY, VALVOLINE, MOBIL and 1 other brand supply 8 parts: full-synthetic oils. A representative part number is LIQUI MOLY 20328.

The High Mileage (>75,000 Miles) section lists 1 option from IDEMITSU — oils grouped for high-mileage engines. IDEMITSU 30015121750 is listed in this group.

This group includes LIQUI MOLY 20328, MOBIL 124321 and IDEMITSU 30010097750 and the remaining parts above.

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

5 Oil Drain Plug parts are listed for the 2021 Toyota Prius Prime, from DORMAN, ACKOJA, BECK/ARNLEY and 1 other brand. DORMAN 090038 carries the "Popular" badge.

This group includes DORMAN 090038, ACKOJA A700114 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 for the 2021 Toyota Prius Prime 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

One part is listed for the 2021 Toyota Prius Prime — MOTORAD MO224.

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

21 Oil Filter parts are listed for the 2021 Toyota Prius Prime, from VARIOUS MFR, BOSCH, CHAMP / LUBER-FINER and 12 other brands. PRO-TEC PXL51394 carries the "Popular" badge.

In the Economy grade, VARIOUS MFR, PRO-TEC, BOSCH and 3 other brands supply 7 parts: the catalog's value-priced group. A representative part number is PRO-TEC PXL51394.

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 M1103A.

The Standard Replacement section lists 12 options from ACDELCO, WIX, ACKOJA and 8 other brands — built to original-equipment specification. ACDELCO PF1233 is listed in this group.

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 for the 2021 Toyota Prius Prime come from 2 brands — FEL-PRO and MAHLE / CLEVITE.

Listed part numbers: FEL-PRO ES71858 and MAHLE / CLEVITE B33713.

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

5 Oil Pan parts for the 2021 Toyota Prius Prime come from 5 brands — AUTOTECNICA, DORMAN, REIN and 2 other brands. The "Popular" part is AUTOTECNICA TY1415247.

This group includes AUTOTECNICA TY1415247, DORMAN 264324 and REIN ESK0201 and the remaining parts 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

3 Oil Pan Gasket parts are listed for the 2021 Toyota Prius Prime, from APEX, FEL-PRO and VICTOR REINZ.

This group includes APEX AOP881, FEL-PRO OS30829 and VICTOR REINZ 703141410.

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

4 Oil Pump Chain parts for the 2021 Toyota Prius Prime come from 3 brands — PREFERRED COMPONENTS INC, INA and MELLING.

In the Chain Only grade, INA supplies 1 part: grouped under the catalog's "Chain Only" designation — the notes column spells out what sets them apart. A representative part number is INA ZCC751.

The Economy section: 1 option from PREFERRED COMPONENTS INC. PREFERRED COMPONENTS INC C1001 is listed in this group.

The Kit section lists 1 option from PREFERRED COMPONENTS INC — grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. PREFERRED COMPONENTS INC TS10000 is listed in this group.

Standard Replacement: 1 part, from MELLING. A representative part number is MELLING 751.

This group includes INA ZCC751, PREFERRED COMPONENTS INC C1001 and PREFERRED COMPONENTS INC TS10000 and the remaining parts above.

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 Toyota Prius Prime, from MELLING and PREFERRED COMPONENTS INC.

Part numbers include MELLING BT5936 and PREFERRED COMPONENTS INC T68005.

This table covers the Oil Pump Drive gears. Read more

This group shows a single part: PREFERRED COMPONENTS INC G56125.

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 2021 Toyota Prius Prime — FEL-PRO 73595.

This table covers the Oil Pump sprockets. Read more

This group shows a single part: MELLING S923.

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 2021 Toyota Prius Prime — TOPLINE PBTO39.

This table covers the Thrust washers. Read more

One part is listed for the 2021 Toyota Prius Prime — KING ENGINE BEARINGS TW185AM.

This table covers the Timing Cam sprockets. Read more

2 Timing Cam Sprocket parts are listed for the 2021 Toyota Prius Prime, from INA and MELLING.

Listed part numbers: INA ZSS846 and MELLING S846.

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

3 Timing Chain parts for the 2021 Toyota Prius Prime come from 3 brands — CLOYES, MELLING and PREFERRED COMPONENTS INC.

Part numbers include CLOYES 94220, MELLING 4220 and PREFERRED COMPONENTS INC C15140.

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 2021 Toyota Prius Prime, from PREFERRED COMPONENTS INC, INA, MELLING and 1 other brand. PREFERRED COMPONENTS INC TS15140 carries the "Popular" badge.

Economy: 2 parts, from PREFERRED COMPONENTS INC. A representative part number is PREFERRED COMPONENTS INC TS15140.

The Standard Replacement section: 3 options from INA, MELLING and TOPLINE. INA ZC76275S is listed in this group.

Part numbers include PREFERRED COMPONENTS INC TS15140, PREFERRED COMPONENTS INC TS25140 and INA ZC76275S, among others listed above.

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

6 Timing Chain Guide / Damper parts for the 2021 Toyota Prius Prime come from 2 brands — MELLING and PREFERRED COMPONENTS INC. The "Popular" part is MELLING BG5940.

Listed part numbers: MELLING BG5940, PREFERRED COMPONENTS INC R70172 and MELLING BG7043, 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

2 Timing Chain Tensioner parts are listed for the 2021 Toyota Prius Prime, from MELLING and PREFERRED COMPONENTS INC.

This group includes MELLING BT5935 and PREFERRED COMPONENTS INC T66225.

This table covers the Timing Chain Tensioner springs. 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: PREFERRED COMPONENTS INC T68004.

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

One part is listed for the 2021 Toyota Prius Prime — SKF 15355A.

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

PREFERRED COMPONENTS INC supplies both parts for the 2021 Toyota Prius Prime.

Part numbers include PREFERRED COMPONENTS INC G56373 and PREFERRED COMPONENTS INC G56033.

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

4 Torque Strut Mount parts for the 2021 Toyota Prius Prime come from 4 brands — ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand.

Listed part numbers: ANCHOR 10172, DEA / MARMON RIDE CONTROL A42150 and PIONEER 630172, 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

6 Valve Cover Gasket parts are listed for the 2021 Toyota Prius Prime, from VICTOR REINZ, BECK/ARNLEY, AJUSA and 2 other brands. BECK/ARNLEY 0362112 carries the "Popular" badge.

This group includes BECK/ARNLEY 0362112, AJUSA 56086800 and FEL-PRO VS51043R and the remaining parts above.

This table covers the Valve Cover grommets. Read more

One part is listed for the 2021 Toyota Prius Prime — BECK/ARNLEY 0396605.

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 Toyota Prius Prime, from SBI and TOPLINE.

Listed part numbers: SBI 1403135, SBI 1403134 and TOPLINE EVGTO55, plus the other parts above.

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

2 Valve Lifter parts are listed for the 2021 Toyota Prius Prime, from AJUSA and TOPLINE.

This group includes AJUSA 85010900 and TOPLINE LIFTO55P.

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 2021 Toyota Prius Prime 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

6 Valve Stem Seal parts are listed for the 2021 Toyota Prius Prime, from AJUSA, SBI and TOPLINE. SBI 1221266 carries the "Popular" badge.

This group includes SBI 1221266, SBI 1221282 and AJUSA 12015500 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

7 Variable Valve Timing (VVT) Solenoid / Actuator parts are listed for the 2021 Toyota Prius Prime, from GATES, HOLSTEIN, ROSTRA and 4 other brands. NTK VV0064 carries the "Popular" badge.

Economy: 4 parts, from GATES, HOLSTEIN, ROSTRA and 1 other brand. A representative part number is GATES VVS120.

The Standard Replacement section: 3 options from NTK, STANDARD MOTOR PRODUCTS and BECK/ARNLEY. NTK VV0064 is listed in this group.

Part numbers include NTK VV0064, GATES VVS120 and HOLSTEIN 2VTS0016, among others listed above.