2021 Honda Accord 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 RBH54T.

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 Honda Accord come from 3 brands — AJUSA, MAHLE / CLEVITE and TOPLINE.

Listed part numbers: AJUSA 54280700, MAHLE / CLEVITE CS55383 and TOPLINE CBSH54.

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 Honda Accord.

This group includes TOPLINE MBH54T and TOPLINE TWH54T.

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

6 Crankshaft Seal parts are listed for the 2021 Honda Accord, from AJUSA, FEL-PRO, MAHLE / CLEVITE and 2 other brands. FEL-PRO BS40800 carries the "Popular" badge.

This group includes FEL-PRO BS40800, MAHLE / CLEVITE 68080 and AJUSA 15097100 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 Honda Accord come from 3 brands — AJUSA, FEL-PRO and TOPLINE.

Part numbers include AJUSA 81072000, FEL-PRO ES73404 and TOPLINE HBH54T.

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 Honda Accord come from 3 brands — AJUSA, APEX and FEL-PRO.

This group includes AJUSA 10236600, APEX AHG177 and FEL-PRO 26840PT.

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

2 Cylinder Head Gasket Set parts for the 2021 Honda Accord come from 2 brands — AJUSA and TOPLINE.

This group includes AJUSA 52622800 and TOPLINE HSH54TA.

This table covers the Engine covers. Read more

2 Engine Cover parts for the 2021 Honda Accord come from 2 brands — TECHPRO and VARIOUS MFR.

Listed part numbers: TECHPRO HO1228165, 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 2021 Honda Accord come from 2 brands — AJUSA and TOPLINE.

This group includes AJUSA 50556500 and TOPLINE CGSH54TA.

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 Honda Accord, from MELLING, QUALCAST and TOPLINE.

Listed part numbers: MELLING V5839, QUALCAST 1030539 and TOPLINE EVH54T.

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

3 Harmonic Balancer parts for the 2021 Honda Accord come from 3 brands — ACKOJA, ATP and PIONEER.

Part numbers include ACKOJA A260411, ATP 102139 and PIONEER DA2139.

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 2021 Honda Accord come from 3 brands — AJUSA, FEL-PRO and MAHLE / CLEVITE.

This group includes AJUSA 13293200, FEL-PRO MS97619 and MAHLE / CLEVITE MS20396.

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

2 Intake Valve parts are listed for the 2021 Honda Accord, from QUALCAST and TOPLINE.

This group includes QUALCAST 1030540 and TOPLINE IVH54L.

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

4 Motor Mount parts are listed for the 2021 Honda Accord, from ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand.

This group includes ANCHOR 10155, DEA / MARMON RIDE CONTROL A65109 and PIONEER 610155 and the remaining parts above.

This table covers the Motor Mount kits. Read more

One part is listed for the 2021 Honda Accord — ANCHOR 300871.

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 are listed for the 2021 Honda Accord, from LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands. LIQUI MOLY 22044 carries the "Popular" badge. Full Synthetic and High Mileage (>75,000 Miles) are all represented, and Full Synthetic alone accounts for 29 parts.

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

5 Oil Drain Plug parts are listed for the 2021 Honda Accord, 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 Honda Accord come from 5 brands — DORMAN, AJUSA, APEX and 2 other brands. The "Popular" part is DORMAN 095144.

This group includes DORMAN 095144, AJUSA 22007400 and APEX ADP1909 and the remaining parts above.

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

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

Listed part numbers: 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

16 Oil Filter parts are listed for the 2021 Honda Accord, from BOSCH, VARIOUS MFR, WIX and 10 other brands. MOBIL M1110A carries the "Popular" badge.

In the Economy grade, BOSCH, FVP, PRO-TEC and 2 other brands supply 5 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 9 options from BOSCH, WIX, ACKOJA and 6 other brands — built to original-equipment specification. BOSCH 3323 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

This group shows a single part: MAHLE / CLEVITE B33713.

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

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

This group includes DORMAN 264869 and SPECTRA PREMIUM HOP42A.

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 Honda Accord — 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

3 Oil Pump parts are listed for the 2021 Honda Accord, from ENGINETECH, MELLING and TOPLINE.

Listed part numbers: ENGINETECH EP570, MELLING M570 and TOPLINE OPH54T.

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 PAH54BE.

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

This group shows a single part: TOPLINE RSH54T.

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

This group shows a single part: CLOYES C985.

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 Honda Accord, from CLOYES, INA and TOPLINE.

Part numbers include CLOYES 90985SX, CLOYES 90985S and INA ZC1777, 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 Honda Accord come from 3 brands — CLOYES, MELLING and PREFERRED COMPONENTS INC. The "Popular" part is CLOYES 96142.

Listed part numbers: CLOYES 96142, MELLING BG7045 and CLOYES 96140, 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 Honda Accord, from MELLING and PREFERRED COMPONENTS INC.

This group includes MELLING BT7059 and PREFERRED COMPONENTS INC R70105.

This table covers the Timing covers. Read more

This group shows a single part: ACKOJA A260180.

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 Honda Accord, from MAHLE / CLEVITE and SKF.

Part numbers include MAHLE / CLEVITE 68064 and SKF 16896.

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

One part is listed for the 2021 Honda Accord — CLOYES S1167.

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

5 Torque Strut Mount parts for the 2021 Honda Accord come from 3 brands — ANCHOR, PIONEER and DEA / MARMON RIDE CONTROL. The "Popular" part is ANCHOR 10151.

Listed part numbers: ANCHOR 10151, ANCHOR 10143 and DEA / MARMON RIDE CONTROL A65128, plus the other parts above.

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

3 Turbocharger parts are listed for the 2021 Honda Accord, from GPD, ROTOMASTER and SKP.

Part numbers include GPD 2511606, ROTOMASTER J1160112N and SKP SK2511606.

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 Honda Accord 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.

This group includes 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

2 Turbocharger Gasket parts for the 2021 Honda Accord come from 2 brands — AJUSA and MAHLE / CLEVITE.

Part numbers include AJUSA JTC12681 and MAHLE / CLEVITE F33463.

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

6 Turbocharger Oil Line parts are listed for the 2021 Honda Accord, from GATES, SUNSONG and DORMAN. GATES TL225 carries the "Popular" badge.

Part numbers include GATES TL225, GATES TL227 and DORMAN 667728, among others listed above.

This table covers the Turbocharger Wastegate Solenoid actuators. 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

One part is listed for the 2021 Honda Accord — SKP SK6T52372.

This table covers the Valve covers. Read more

This group shows a single part: APEX VCS177.

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 Honda Accord, from MAHLE / CLEVITE, AJUSA, APEX and 2 other brands. MAHLE / CLEVITE VS50884 carries the "Popular" badge.

Part numbers include MAHLE / CLEVITE VS50884, AJUSA 11153500 and APEX AVC177, 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

3 Valve Guide parts are listed for the 2021 Honda Accord, from QUALCAST, SBI and TOPLINE.

Part numbers include QUALCAST 303136, SBI 1403136 and TOPLINE VGH43.

This table covers the Valve Spring retainers. Read more

This group shows a single part: MELLING VSR729.

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 Honda Accord come from 3 brands — MELLING, QUALCAST and SBI.

Part numbers include 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

9 Valve Stem Seal parts are listed for the 2021 Honda Accord, from MAHLE / CLEVITE, SBI, APEX and 4 other brands. APEX AVS1003 carries the "Popular" badge.

This group includes APEX AVS1003, FEL-PRO SS702831 and AJUSA 57030200 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 Honda Accord, from DORMAN, GATES, HOLSTEIN and 4 other brands. DORMAN 916559 carries the "Popular" badge.

Economy: 4 parts, from DORMAN, GATES, HOLSTEIN and 1 other brand. A representative part number is DORMAN 916559.

The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS, BECK/ARNLEY and CLOYES. STANDARD MOTOR PRODUCTS VVT363 is listed in this group.

This group includes DORMAN 916559, GATES VVS383 and HOLSTEIN 2VTS0479 and the remaining parts above.

This table covers the Variable Valve Timing (VVT) Solenoid filters. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for. Read more

One part is listed for the 2021 Honda Accord — GATES VVS920.

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

One part is listed for the 2021 Honda Accord — STANDARD MOTOR PRODUCTS VVT773.

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

This group shows a single part: CLOYES VCB132.