2021 Honda Ridgeline Engine Parts

This table covers the seals at each camshaft end. 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 Camshaft Seal parts for the 2021 Honda Ridgeline come from 4 brands — AJUSA, FEL-PRO, MAHLE / CLEVITE and 1 other brand.

Part numbers include AJUSA 15064200, FEL-PRO TCS46025 and MAHLE / CLEVITE 67617, among others listed above.

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 are listed for the 2021 Honda Ridgeline, from ENGINETECH and TOPLINE.

This group includes ENGINETECH BB3516 and TOPLINE RBH52.

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

4 Conversion / Lower Gasket Set parts are listed for the 2021 Honda Ridgeline, from AJUSA, ENGINETECH, MAHLE / CLEVITE and 1 other brand.

This group includes AJUSA 54253700, ENGINETECH HO35CSB and MAHLE / CLEVITE CS54578A and the remaining parts above.

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 for the 2021 Honda Ridgeline come from 2 brands — TOPLINE and ENGINETECH.

This group includes ENGINETECH BC2208, TOPLINE TWH37 and TOPLINE MBH52.

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

This group shows a single part: 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

6 Crankshaft Seal parts for the 2021 Honda Ridgeline come from 4 brands — MAHLE / CLEVITE, AJUSA, SKP and 1 other brand. The "Popular" part is MAHLE / CLEVITE 67782.

Listed part numbers: MAHLE / CLEVITE 67782, SKP SKSEAL029S and AJUSA 15089500, plus the other parts above.

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

3 Cylinder Head Bolt parts are listed for the 2021 Honda Ridgeline, from AJUSA, MAHLE / CLEVITE and TOPLINE.

This group includes AJUSA 81067500, MAHLE / CLEVITE GS33606 and TOPLINE HBH52.

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

5 Cylinder Head Gasket parts are listed for the 2021 Honda Ridgeline, from MAHLE / CLEVITE, APEX and FEL-PRO. MAHLE / CLEVITE 55339 carries the "Popular" badge.

This group includes MAHLE / CLEVITE 55339, APEX AHG176L and APEX AHG176R and the remaining 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

4 Cylinder Head Gasket Set parts are listed for the 2021 Honda Ridgeline, from AJUSA, ENGINETECH, MAHLE / CLEVITE and 1 other brand.

Part numbers include AJUSA 52649700, ENGINETECH HO35HSF and MAHLE / CLEVITE HS55339A, among others listed above.

This table covers the Engine Cover grommets. Read more

This group shows a single part: DORMAN 49932.

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 are listed for the 2021 Honda Ridgeline, from AJUSA and TOPLINE.

Part numbers include AJUSA 50577500 and TOPLINE CGSH52H.

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

5 Exhaust Valve parts for the 2021 Honda Ridgeline come from 4 brands — MELLING, QUALCAST, SBI and 1 other brand. The "Popular" part is MELLING V0779.

Listed part numbers: MELLING V0779, MELLING V0779IN and QUALCAST 1010779, plus the other parts above.

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

2 Harmonic Balancer parts are listed for the 2021 Honda Ridgeline, from ATP and DAYCO.

This group includes ATP 102367 and DAYCO PB1713N.

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

8 Intake Manifold Gasket parts are listed for the 2021 Honda Ridgeline, from AJUSA, MAHLE / CLEVITE, APEX and 1 other brand. BECK/ARNLEY 0376245 carries the "Popular" badge.

This group includes BECK/ARNLEY 0376245, MAHLE / CLEVITE MS20316 and AJUSA 13340200 and the remaining parts above.

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

This group shows a single part: APEX AMS1760.

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

5 Intake Valve parts for the 2021 Honda Ridgeline come from 5 brands — MELLING, ENGINETECH, QUALCAST and 2 other brands. The "Popular" part is MELLING V0336.

This group includes MELLING V0336, ENGINETECH IM4476 and QUALCAST 1013336 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

15 Motor Mount parts for the 2021 Honda Ridgeline come from 5 brands — ANCHOR, DEA / MARMON RIDE CONTROL, BECK/ARNLEY and 2 other brands. The "Popular" part is ANCHOR 9964.

This table covers the Motor Mount kits. Read more

This group shows a single part: ANCHOR 300161.

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

37 Oil parts for the 2021 Honda Ridgeline come from 6 brands — LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands. The "Popular" part is LIQUI MOLY 22044. They are grouped as Full Synthetic and High Mileage (>75,000 Miles), with Full Synthetic the largest group at 30 parts from LIQUI MOLY, VALVOLINE, MOBIL and 3 other brands.

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

5 Oil Drain Plug parts for the 2021 Honda Ridgeline come from 4 brands — DORMAN, ACKOJA, REIN and 1 other brand. The "Popular" part is DORMAN 090053.

This group includes DORMAN 090053, ACKOJA A260253 and DORMAN 090033 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 are listed for the 2021 Honda Ridgeline, from DORMAN, AJUSA, APEX and 2 other brands. DORMAN 095144 carries the "Popular" badge.

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 for the 2021 Honda Ridgeline come from 3 brands — CALORSTAT, GATES and MOTORAD.

Part numbers include 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

15 Oil Filter parts for the 2021 Honda Ridgeline come from 12 brands — BOSCH, VARIOUS MFR, WIX and 9 other brands. The "Popular" part is WIX 57356XP.

The Economy section lists 4 options from BOSCH, FVP, PRO-TEC and 1 other brand — the catalog's value-priced group. BOSCH 72226WS is listed in this group.

The High Performance / Heavy Duty section lists 2 options from WIX and MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. WIX 57356XP is listed in this group.

In the Standard Replacement grade, BOSCH, WIX, BECK/ARNLEY and 6 other brands supply 9 parts: built to original-equipment specification. A representative part number is BOSCH 3323.

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 are listed for the 2021 Honda Ridgeline, from FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO ES74047 and MAHLE / CLEVITE B33360.

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

4 Oil Pan parts are listed for the 2021 Honda Ridgeline, from ACKOJA, DORMAN, SKP and 1 other brand.

Listed part numbers: ACKOJA A260267, DORMAN 264810 and SKP SK103506, plus the other 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

2 Oil Pan Gasket parts for the 2021 Honda Ridgeline come from 2 brands — FEL-PRO and VICTOR REINZ.

Listed part numbers: FEL-PRO OS30954T 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

5 Oil Pump parts for the 2021 Honda Ridgeline come from 5 brands — ENGINETECH, SKP, MELLING and 2 other brands. The "Popular" part is MELLING M569.

The Economy section: 2 options from ENGINETECH and SKP. ENGINETECH EPK200 is listed in this group.

Standard Replacement: 1 part, from MELLING. A representative part number is MELLING M569.

2 further parts sit outside the graded sections, with the same engine-level match.

This group includes MELLING M569, ENGINETECH EPK200 and SKP SKM569 and the remaining parts above.

This table covers the gaskets that seal the Oil Pump. 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 Ridgeline — AJUSA 01130500.

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

3 Piston parts are listed for the 2021 Honda Ridgeline, from ENGINETECH and TOPLINE.

The Premium section lists 2 options from ENGINETECH — a step above OE specification in materials, tolerances or warranty terms. ENGINETECH P3552 is listed in this group.

The Standard Replacement section: 1 option from TOPLINE. TOPLINE PAH52A is listed in this group.

This group includes ENGINETECH P3552, ENGINETECH K35526P and TOPLINE PAH52A.

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

2 Piston Ring parts are listed for the 2021 Honda Ridgeline, from ENGINETECH and TOPLINE.

The Premium section: 1 option from ENGINETECH. ENGINETECH C35046 is listed in this group.

The Standard Replacement section: 1 option from TOPLINE. TOPLINE RSH52A is listed in this group.

Listed part numbers: ENGINETECH C35046 and TOPLINE RSH52A.

This table covers the Timing belts. Typical signs include squeal on cold start, cracked ribs, or glazing. Spin the tensioner and idlers by hand while the belt is off. Read more

6 Timing Belt parts are listed for the 2021 Honda Ridgeline, from CLOYES, BANDO, GATES and 3 other brands. BANDO TB329 carries the "Popular" badge.

Economy: 1 part, from CLOYES. A representative part number is CLOYES B329.

The Standard Replacement section: 5 options from BANDO, GATES, ACDELCO and 2 other brands. BANDO TB329 is listed in this group.

Part numbers include BANDO TB329, CLOYES B329 and GATES T329, among others listed above.

This table covers the Timing Belt & component kits. Read more

13 Timing Belt & Component Kit parts for the 2021 Honda Ridgeline come from 8 brands — CONTINENTAL, AISIN, GATES and 5 other brands. The "Popular" part is CONTINENTAL GTKWP329.

The Economy section: 2 options from CONTINENTAL and CLOYES. CONTINENTAL GTKWP329 is listed in this group.

Standard Replacement: 11 parts, from CONTINENTAL, AISIN, GATES and 4 other brands. A representative part number is AISIN TKH002.

This table covers the Timing Belt pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

This group shows a single part: CLOYES 95508.

This table covers the Timing Belt 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

9 Timing Belt Tensioner parts for the 2021 Honda Ridgeline come from 7 brands — GMB, GATES, AISIN and 4 other brands. The "Popular" part is AISIN BTH001.

Listed part numbers: AISIN BTH001, GMB 4355767 and ACDELCO T43129, plus the other parts above.

This table covers the Timing Cover Dust Seal sets. Read more

This group shows a single part: MAHLE / CLEVITE JV5273.

This table covers the Timing idlers. Typical signs include a chirp that follows engine speed, or an idler that feels rough or has play. Replace a noisy idler with the belt — the labor is already paid for. Read more

5 Timing Idler parts for the 2021 Honda Ridgeline come from 5 brands — GMB, CLOYES, GATES and 2 other brands. The "Popular" part is GMB 4359730.

Listed part numbers: GMB 4359730, CLOYES 95509 and GATES T41232, plus the other parts above.

This table covers the Valve covers. Read more

AUTOTECNICA supplies both parts for the 2021 Honda Ridgeline.

This group includes AUTOTECNICA HA1423912 and AUTOTECNICA HA1423913.

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 for the 2021 Honda Ridgeline come from 2 brands — BECK/ARNLEY and MAHLE / CLEVITE. The "Popular" part is BECK/ARNLEY 0362072.

Part numbers include BECK/ARNLEY 0362072, BECK/ARNLEY 0362054 and BECK/ARNLEY 0362055, 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

5 Valve Guide parts for the 2021 Honda Ridgeline come from 3 brands — SBI, TOPLINE and QUALCAST. The "Popular" part is SBI 1408157.

Part numbers include SBI 1408157, QUALCAST 308157 and SBI 1408158, among others listed above.

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

MELLING supplies both parts for the 2021 Honda Ridgeline.

This group includes MELLING VS2501 and MELLING VS2502.

This table covers the Valve Spring retainers. Read more

One part is listed for the 2021 Honda Ridgeline — MELLING VSR730.

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

3 Valve Spring Retainer Keeper parts are listed for the 2021 Honda Ridgeline, from 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

5 Valve Stem Seal parts for the 2021 Honda Ridgeline come from 4 brands — SBI, FEL-PRO, QUALCAST and 1 other brand. The "Popular" part is FEL-PRO SS702832.

Listed part numbers: FEL-PRO SS702832, QUALCAST 3859255 and SBI 1221202, 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

7 Variable Valve Timing (VVT) Solenoid / Actuator parts for the 2021 Honda Ridgeline come from 4 brands — WELLS, STANDARD MOTOR PRODUCTS, ACKOJA and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS VVT364.

The Economy section: 3 options from WELLS and HOLSTEIN. HOLSTEIN 2VTS0494 is listed in this group.

Standard Replacement: 4 parts, from STANDARD MOTOR PRODUCTS and ACKOJA. A representative part number is STANDARD MOTOR PRODUCTS VVT364.

Part numbers include STANDARD MOTOR PRODUCTS VVT364, HOLSTEIN 2VTS0494 and WELLS 2T1262, among others listed above.

This table covers the seals at the Variable Valve Timing (VVT) Solenoid Gasket. 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 Honda Ridgeline — DORMAN 917177.