2021 Chevrolet Suburban Engine Parts

This table covers the camshafts that open the valves. Read more

5 Camshaft parts for the 2021 Chevrolet Suburban come from 3 brands — GM GENUINE, ENGINETECH and MELLING.

Listed part numbers: ENGINETECH ES5438, GM GENUINE 55508605 and GM GENUINE 55508606, plus the other parts above.

This table covers the Camshaft bearings. 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 Camshaft Bearing parts for the 2021 Chevrolet Suburban come from 2 brands — GM GENUINE and MAHLE / CLEVITE.

Part numbers include GM GENUINE 12679049, GM GENUINE 12686894 and MAHLE / CLEVITE SH2231S.

This table covers the Camshaft bolts. Read more

3 Camshaft Bolt parts are listed for the 2021 Chevrolet Suburban, from GM GENUINE and ELRING.

Listed part numbers: ELRING 857390, GM GENUINE 55496367 and GM GENUINE 11561455.

This table covers the Camshaft Dowel pins. Read more

This group shows a single part: GM GENUINE 24575061.

This table covers the Camshaft Follower guides. Read more

This group shows a single part: GM GENUINE 12709452.

This table covers the Camshaft Retainer / Thrust plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

3 Camshaft Retainer / Thrust Plate parts are listed for the 2021 Chevrolet Suburban, from DORMAN, FEL-PRO and GM GENUINE.

Listed part numbers: DORMAN 45745, FEL-PRO ES73115 and GM GENUINE 12589016.

This table covers the connecting rods between each piston and the crankshaft. Read more

This group shows a single part: GM GENUINE 12649190.

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

23 Connecting Rod Bearing parts for the 2021 Chevrolet Suburban come from 4 brands — MAHLE / CLEVITE, ENGINETECH, GM GENUINE and 1 other brand. The "Popular" part is ENGINETECH BB253J.

The High Performance section lists 11 options from MAHLE / CLEVITE — engineered beyond original-equipment specification. MAHLE / CLEVITE CB663HN is listed in this group.

In the Standard Replacement grade, MAHLE / CLEVITE, ENGINETECH, SEALED POWER and 1 other brand supply 11 parts: built to original-equipment specification. A representative part number is ENGINETECH BB253J.

1 further part sits outside the graded sections, with the same engine-level match.

This table covers the Connecting Rod bolts. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 11570662.

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 Chevrolet Suburban come from 2 brands — AJUSA and MAHLE / CLEVITE.

This group includes AJUSA 54354100, AJUSA 54323200 and MAHLE / CLEVITE CS54996.

This table covers the Crankcase pressure sensors. Typical signs include a check-engine light for MAP or fuel-rail pressure, or a limp mode under load. A vacuum leak or a clogged reference line will fake a bad pressure sensor. Read more

2 Crankcase Pressure Sensor parts are listed for the 2021 Chevrolet Suburban, from ACDELCO and GM GENUINE.

Listed part numbers: ACDELCO 55509813 and GM GENUINE 12740187.

This table covers the crankshafts that turn piston motion into rotation. Read more

2 Crankshaft parts for the 2021 Chevrolet Suburban come from GM GENUINE.

Listed part numbers: GM GENUINE 40009035 and GM GENUINE 12685650.

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

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 12729654.

This table covers the Crankshaft Main Bearing Cap bolts. Read more

3 Crankshaft Main Bearing Cap Bolt parts for the 2021 Chevrolet Suburban come from GM GENUINE.

Part numbers include GM GENUINE 11546565, GM GENUINE 11548076 and GM GENUINE 11548075.

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

15 Crankshaft Seal parts are listed for the 2021 Chevrolet Suburban, from GM GENUINE, APEX, FEL-PRO and 4 other brands. FEL-PRO BS40765 carries the "Popular" badge.

This table covers the Crankshaft Seal covers. Read more

2 Crankshaft Seal Cover parts for the 2021 Chevrolet Suburban come from 2 brands — DORMAN and GM GENUINE.

Listed part numbers: DORMAN 635786 and GM GENUINE 12705663.

This table covers the gaskets that seal the Crankshaft Seal. 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: GM GENUINE 12627520.

This table covers the Cylinder Deactivation solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 12747732.

This table covers the Cylinder Head Alignment Dowel pins. Read more

3 Cylinder Head Alignment Dowel Pin parts for the 2021 Chevrolet Suburban come from 2 brands — PIONEER and GM GENUINE.

This group includes GM GENUINE 12570326, PIONEER S1115 and PIONEER PG525.

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

7 Cylinder Head Bolt parts for the 2021 Chevrolet Suburban come from 4 brands — GM GENUINE, AJUSA, FEL-PRO and 1 other brand. The "Popular" part is GM GENUINE 11546959.

This group includes GM GENUINE 11546959, AJUSA 81092300 and AJUSA 81074000 and the remaining parts above.

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

11 Cylinder Head Gasket parts for the 2021 Chevrolet Suburban come from 5 brands — GM GENUINE, AJUSA, ENGINE PRO and 2 other brands. The "Popular" part is GM GENUINE 40009080.

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 for the 2021 Chevrolet Suburban come from 3 brands — AJUSA, GM GENUINE and MAHLE / CLEVITE.

This group includes AJUSA 53112800, AJUSA 52614200 and GM GENUINE 12700996 and the remaining parts above.

This table covers the Cylinder Head plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

GM GENUINE supplies the 3 Cylinder Head Plug parts for the 2021 Chevrolet Suburban.

Part numbers include GM GENUINE 11546667, GM GENUINE 11570754 and GM GENUINE 12691176.

This table covers the Cylinder Head temperature sensors. Typical signs include hard cold starts, a fan that never comes on, or a gauge that disagrees with the scan tool. A sensor that reads open or shorted is usually the part; an implausible-but-smooth reading can be wiring. Read more

One part is listed for the 2021 Chevrolet Suburban — VNE 4931773.

This table covers the wear sleeves used to restore a Cylinder seal surface. Read more

This group shows a single part: MELLING CSL355F.

This table covers the Engine Block drain plugs. Read more

3 Engine Block Drain Plug parts for the 2021 Chevrolet Suburban come from GM GENUINE.

This group includes GM GENUINE 11548315, GM GENUINE 11602951 and GM GENUINE 11546667.

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

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 12586687.

This table covers the Engine covers. Read more

5 Engine Cover parts for the 2021 Chevrolet Suburban come from 2 brands — TECHPRO and VARIOUS MFR. The "Popular" part is TECHPRO GM1228179.

Listed part numbers: TECHPRO GM1228179, TECHPRO GM1228182 and TECHPRO GM1228173, plus the other parts above.

This table covers the Engine Cover grommets. Read more

GM GENUINE supplies the 3 Engine Cover Grommet parts for the 2021 Chevrolet Suburban.

Part numbers include GM GENUINE 12594875, GM GENUINE 12737359 and GM GENUINE 12661056.

This table covers the Engine Cover retainers and clips. Read more

GM GENUINE supplies both parts for the 2021 Chevrolet Suburban.

Part numbers include GM GENUINE 10121502 and GM GENUINE 11518792.

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 Chevrolet Suburban come from AJUSA.

Listed part numbers: AJUSA 51118100 and AJUSA 50552300.

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

6 Exhaust Valve parts are listed for the 2021 Chevrolet Suburban, from MELLING, GM GENUINE, ENGINETECH and 2 other brands. GM GENUINE 12678745 carries the "Popular" badge.

This group includes GM GENUINE 12678745, ENGINETECH V3433 and MELLING V5846 and the remaining parts above.

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

2 Harmonic Balancer parts for the 2021 Chevrolet Suburban come from GM GENUINE.

Part numbers include GM GENUINE 55512109 and GM GENUINE 12680364.

This table covers the Harmonic Balancer bolts. Read more

2 Harmonic Balancer Bolt parts are listed for the 2021 Chevrolet Suburban, from FEL-PRO and GM GENUINE.

This group includes FEL-PRO 73372 and GM GENUINE 11547372.

This table covers the Intake insulators. Read more

This group shows a single part: GM GENUINE 12559120.

This table covers the Intake manifolds. Typical signs include an exhaust tick, a vacuum leak, or a gasket that has burned through. Replace the gaskets and hardware; a warped flange will leak with a new gasket alone. Read more

3 Intake Manifold parts are listed for the 2021 Chevrolet Suburban, from GM GENUINE and VAICO.

Part numbers include GM GENUINE 40009521, GM GENUINE 12748173 and VAICO V510597.

This table covers the Intake Manifold bolts. Read more

3 Intake Manifold Bolt parts for the 2021 Chevrolet Suburban come from GM GENUINE.

This group includes GM GENUINE 11610472, GM GENUINE 11588352 and GM GENUINE 11611692.

This table covers the Intake Manifold covers. Read more

This group shows a single part: GM GENUINE 40009488.

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 for the 2021 Chevrolet Suburban come from 4 brands — GM GENUINE, FEL-PRO, MAHLE / CLEVITE and 1 other brand. The "Popular" part is FEL-PRO MS97402.

Listed part numbers: FEL-PRO MS97402, GM GENUINE 12626354 and AJUSA 13366800, plus the other parts above.

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

6 Intake Valve parts are listed for the 2021 Chevrolet Suburban, from MELLING, GM GENUINE, ENGINETECH and 2 other brands. GM GENUINE 12619825 carries the "Popular" badge.

Listed part numbers: GM GENUINE 12619825, ENGINETECH V3432 and MELLING V5847, plus the other 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

18 Motor Mount parts are listed for the 2021 Chevrolet Suburban, from ANCHOR, GM GENUINE, PIONEER and 2 other brands. ANCHOR 3594 carries the "Popular" badge.

This table covers the brackets that mount the Motor Mount. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 85126631.

This table covers the Motor Mount Bracket bolts. Read more

This group shows a single part: GM GENUINE 11588740.

This table covers the Motor Mount kits. Read more

ANCHOR supplies the 6 Motor Mount Kit parts for the 2021 Chevrolet Suburban.

This group includes ANCHOR 301046, ANCHOR 301045 and ANCHOR 300852 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

23 Oil parts are listed for the 2021 Chevrolet Suburban, from LIQUI MOLY, MOBIL, VALVOLINE and 3 other brands. ACDELCO 109302 carries the "Popular" badge.

In the Full Synthetic grade, LIQUI MOLY, MOBIL, VALVOLINE and 3 other brands supply 18 parts: full-synthetic oils. A representative part number is ACDELCO 109302.

The High Mileage (>75,000 Miles) section lists 2 options from MOBIL — oils grouped for high-mileage engines. MOBIL 122535 is listed in this group.

3 ungrouped parts are not assigned to a grade, with the same engine-level match.

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

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 55509959.

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

4 Oil Cooler Gasket parts for the 2021 Chevrolet Suburban come from 4 brands — ACDELCO, DORMAN, GM GENUINE and 1 other brand.

Part numbers include ACDELCO 55488933, DORMAN 66219 and GM GENUINE 23129010, among others listed above.

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

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 85136335.

This table covers the harness connectors at the Oil Cooler Line. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock. Read more

2 Oil Cooler Line Connector parts for the 2021 Chevrolet Suburban come from GM GENUINE.

This group includes GM GENUINE 11547061 and GM GENUINE 84240291.

This table covers the seals at the Oil Cooler. 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

This group shows a single part: GM GENUINE 55507117.

This table covers the Oil Dipstick tubes. Read more

One part is listed for the 2021 Chevrolet Suburban — GM GENUINE 12664925.

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

3 Oil Dipstick / Tube Seal parts for the 2021 Chevrolet Suburban come from 2 brands — GM GENUINE and FEL-PRO.

This group includes FEL-PRO 73889, GM GENUINE 24504031 and GM GENUINE 12670252.

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

8 Oil Drain Plug parts are listed for the 2021 Chevrolet Suburban, from GM GENUINE, DORMAN, AGS and 1 other brand. GM GENUINE 55577568 carries the "Popular" badge.

Listed part numbers: GM GENUINE 55577568, AGS ODP00009 and DORMAN 65416, 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

9 Oil Drain Plug Gasket parts for the 2021 Chevrolet Suburban come from 7 brands — FEL-PRO, DORMAN, GM GENUINE and 4 other brands. The "Popular" part is FEL-PRO 70820.

Listed part numbers: FEL-PRO 70820, GM GENUINE 12616850 and AJUSA 01288800, plus the other parts above.

This table covers the Oil Drain Plug inserts. Read more

This group shows a single part: GM GENUINE 11503302.