2020 Chevrolet Blazer Engine Parts

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

GM GENUINE supplies the 5 Camshaft parts for the 2020 Chevrolet Blazer.

Listed part numbers: GM GENUINE 12677826, GM GENUINE 12677832 and GM GENUINE 12677833, plus the other parts above.

This table covers the Camshaft Alignment tools. This is a service tool, not a wear part — match the application in the notes. Read more

This group shows a single part: LISLE 37530.

This table covers the Camshaft bolts. Read more

This group shows a single part: GM GENUINE 12740203.

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

This group shows a single part: GM GENUINE 12636316.

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

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 12647161.

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 2020 Chevrolet Blazer, from GM GENUINE and MAHLE / CLEVITE.

Listed part numbers: GM GENUINE 12672032 and MAHLE / CLEVITE CB2033A.

This table covers the Connecting Rod bolts. Read more

This group shows a single part: GM GENUINE 11519680.

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

One part is listed for the 2020 Chevrolet Blazer — AJUSA 54323100.

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

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 12699162.

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

This group shows a single part: GM GENUINE 12744917.

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

5 Crankshaft Main Bearing Cap Bolt parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE and ELRING. GM GENUINE 11588713 carries the "Popular" badge.

Part numbers include GM GENUINE 11588713, ELRING B75610 and GM GENUINE 11589000, among others listed above.

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 for the 2020 Chevrolet Blazer come from 3 brands — AJUSA, ELRING and GM GENUINE.

This group includes AJUSA 15125900, AJUSA 71015400 and ELRING 048390 and the remaining parts above.

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

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 12570326.

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

5 Cylinder Head Bolt parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE, AJUSA and FEL-PRO. GM GENUINE 11547020 carries the "Popular" badge.

This group includes GM GENUINE 11547020, AJUSA 81082800 and FEL-PRO ES73486 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

8 Cylinder Head Gasket parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE, AJUSA, FEL-PRO and 1 other brand. GM GENUINE 12647574 carries the "Popular" badge.

Part numbers include GM GENUINE 12647574, GM GENUINE 12647575 and AJUSA 10264200, among others listed 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

5 Cylinder Head Gasket Set parts are listed for the 2020 Chevrolet Blazer, from ELRING, AJUSA, GM GENUINE and 1 other brand.

Part numbers include AJUSA 52639700, ELRING 048980 and ELRING 049010, among others listed above.

This table covers the Engine Block drain plugs. Read more

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 11546667.

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

3 Engine Block Heater parts for the 2020 Chevrolet Blazer come from 2 brands — KAT'S HEATERS and GM GENUINE.

This group includes GM GENUINE 12587380, KAT'S HEATERS 28811 and KAT'S HEATERS 11811.

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

One part is listed for the 2020 Chevrolet Blazer — AJUSA 50568500.

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

4 Exhaust Valve parts for the 2020 Chevrolet Blazer come from 4 brands — GM GENUINE, MELLING, QUALCAST and 1 other brand.

Part numbers include GM GENUINE 12647868, MELLING V3468 and QUALCAST 1013468, among others listed above.

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

2 Fuel Pump Camshaft Follower parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE and WELLS.

This group includes GM GENUINE 12718357 and WELLS 5T5013.

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

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 12700427.

This table covers the Harmonic Balancer bolts. Read more

This group shows a single part: GM GENUINE 11546516.

This table covers the Intake insulators. Read more

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 12711487.

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

This group shows a single part: GM GENUINE 12674037.

This table covers the Intake Manifold bolts. Read more

GM GENUINE supplies both parts for the 2020 Chevrolet Blazer.

This group includes GM GENUINE 11547321 and GM GENUINE 11547030.

This table covers the Intake Manifold covers. Read more

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 12680066.

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

5 Intake Manifold Gasket parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE, AJUSA, ELRING and 2 other brands. GM GENUINE 12648665 carries the "Popular" badge.

Listed part numbers: GM GENUINE 12648665, AJUSA 13332900 and ELRING 048550, 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

4 Intake Valve parts for the 2020 Chevrolet Blazer come from 4 brands — GM GENUINE, MELLING, QUALCAST and 1 other brand.

Part numbers include GM GENUINE 12647867, MELLING V3467 and QUALCAST 1013467, 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

5 Motor Mount parts for the 2020 Chevrolet Blazer come from 5 brands — GM GENUINE, ANCHOR, DEA / MARMON RIDE CONTROL and 2 other brands. The "Popular" part is GM GENUINE 84499831.

This group includes GM GENUINE 84499831, ANCHOR 3518 and DEA / MARMON RIDE CONTROL A20073 and the remaining parts above.

This table covers the Motor Mount bolts. Read more

GM GENUINE supplies both parts for the 2020 Chevrolet Blazer.

Part numbers include GM GENUINE 11547918 and GM GENUINE 11588741.

This table covers the Motor Mount Bracket bolts. Read more

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 11589279.

This table covers the Motor Mount kits. Read more

2 Motor Mount Kit parts for the 2020 Chevrolet Blazer come from ANCHOR.

Part numbers include ANCHOR 300504 and ANCHOR 300505.

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

20 Oil parts for the 2020 Chevrolet Blazer come from 6 brands — MOBIL, LIQUI MOLY, VALVOLINE and 3 other brands. The "Popular" part is ACDELCO 109324.

The Full Synthetic section lists 18 options from LIQUI MOLY, MOBIL, VALVOLINE and 3 other brands — full-synthetic oils. ACDELCO 109324 is listed in this group.

In the High Mileage (>75,000 Miles) grade, MOBIL supplies 2 parts: oils grouped for high-mileage engines. A representative part number is MOBIL 123842.

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

This group shows a single part: GM GENUINE 12662732.

This table covers the seals at the Oil Cooler Adapter. 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 12733672.

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

One part is listed for the 2020 Chevrolet Blazer — ELRING 836300.

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

This group shows a single part: GM GENUINE 12662673.

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

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 12733672.

This table covers the Oil Dipstick tubes. Read more

2 Oil Dipstick / Tube parts for the 2020 Chevrolet Blazer come from GM GENUINE.

Part numbers include GM GENUINE 12666871 and GM GENUINE 12672635.

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 are listed for the 2020 Chevrolet Blazer, from ELRING, FEL-PRO and GM GENUINE.

This group includes ELRING 584210, FEL-PRO 73889 and GM GENUINE 24504031.

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

3 Oil Drain Plug parts for the 2020 Chevrolet Blazer come from 2 brands — DORMAN and GM GENUINE.

Part numbers include DORMAN 090948CD, DORMAN 090948 and GM GENUINE 55577568.

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 are listed for the 2020 Chevrolet Blazer, from FEL-PRO, DORMAN, GM GENUINE and 4 other brands. FEL-PRO 70820 carries the "Popular" badge.

Part numbers include FEL-PRO 70820, GM GENUINE 12616850 and AJUSA 01288800, among others listed above.

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

4 Oil Filler Cap parts for the 2020 Chevrolet Blazer come from 4 brands — ACDELCO, CALORSTAT, DORMAN and 1 other brand.

Part numbers include ACDELCO FC268, CALORSTAT OC2314 and DORMAN 90202, among others listed 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

4 Oil Filler Cap Gasket parts are listed for the 2020 Chevrolet Blazer, from ELRING, FEL-PRO and GM GENUINE.

This group includes ELRING 592250, ELRING 823620 and FEL-PRO 73193 and the remaining parts above.

This table covers the Oil Filler tubes. Read more

This group shows a single part: GM GENUINE 12686973.

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

10 Oil Filter parts for the 2020 Chevrolet Blazer come from 10 brands — CHAMP / LUBER-FINER, FRAM, FVP and 7 other brands. The "Popular" part is MOBIL M1212A.

The Economy section lists 6 options from CHAMP / LUBER-FINER, FRAM, FVP and 3 other brands — the catalog's value-priced group. CHAMP / LUBER-FINER PH1500 is listed in this group.

The High Performance / Heavy Duty section lists 1 option from MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1212A is listed in this group.

In the Standard Replacement grade, ACDELCO, HASTINGS / BALDWIN and WIX supply 3 parts: built to original-equipment specification. A representative part number is ACDELCO PF63A.

This table covers the Oil Galley 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

4 Oil Galley Plug parts for the 2020 Chevrolet Blazer come from GM GENUINE.

Part numbers include GM GENUINE 11562126, GM GENUINE 11546667 and GM GENUINE 09427693, among others listed 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

3 Oil Level Sensor parts for the 2020 Chevrolet Blazer come from 3 brands — FAMOUS BRAND, GM GENUINE and WELLS.

Part numbers include FAMOUS BRAND FFC1241, GM GENUINE 12696433 and WELLS 5S17582.

This table covers the Oil Level Sensor 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 Level Sensor Gasket / O-Ring parts for the 2020 Chevrolet Blazer come from 2 brands — ELRING and GM GENUINE.

Listed part numbers: ELRING 351330 and GM GENUINE 12638820.

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

4 Oil Pan parts are listed for the 2020 Chevrolet Blazer, from DORMAN, GM GENUINE, SKP and 1 other brand.

Listed part numbers: DORMAN 264884, GM GENUINE 12647615 and SKP SK264884, plus the other parts above.

This table covers the Oil Pan bolts. Read more

5 Oil Pan Bolt parts for the 2020 Chevrolet Blazer come from GM GENUINE. The "Popular" part is GM GENUINE 11588734.

Listed part numbers: GM GENUINE 11588734, GM GENUINE 11588726 and GM GENUINE 11588725, 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

3 Oil Pan Gasket parts for the 2020 Chevrolet Blazer come from 3 brands — ELRING, GM GENUINE and VICTOR REINZ.

Listed part numbers: ELRING 048520, GM GENUINE 12647081 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

This group shows a single part: GM GENUINE 12741263.

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

2 Oil Pump Chain parts are listed for the 2020 Chevrolet Blazer, from CLOYES and S.A. GEAR.

This group includes CLOYES C952 and S.A. GEAR C1135.

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 for the 2020 Chevrolet Blazer come from 2 brands — CLOYES and S.A. GEAR.

Part numbers include CLOYES 96040 and S.A. GEAR 91270.

This table covers the Oil Pump Control Valve 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

2 Oil Pump Control Valve / Solenoid parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE and STANDARD MOTOR PRODUCTS.

Listed part numbers: GM GENUINE 12741262 and STANDARD MOTOR PRODUCTS OPS404.

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

ELRING supplies the 3 Oil Pump Gasket parts for the 2020 Chevrolet Blazer.

Listed part numbers: ELRING 048480, ELRING 048510 and ELRING 048490.

This table covers the gaskets that seal the Oil Pump Pickup Tube. 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 Pump Pickup Tube Gasket parts are listed for the 2020 Chevrolet Blazer, from FEL-PRO and GM GENUINE.

Listed part numbers: FEL-PRO 73744 and GM GENUINE 12637179.

This table covers the Oil Pump sprockets. Read more

4 Oil Pump Sprocket parts are listed for the 2020 Chevrolet Blazer, from CLOYES, GM GENUINE and S.A. GEAR.

Listed part numbers: CLOYES S1122, CLOYES S1121 and GM GENUINE 12669395, plus the other parts above.

This table covers the gaskets that seal the Oil Strainer. 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 2020 Chevrolet Blazer — ELRING 876720.

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

GM GENUINE supplies both parts for the 2020 Chevrolet Blazer.

Part numbers include GM GENUINE 12674055 and GM GENUINE 12674056.

This table covers the Piston Pin retainers. Read more

This group shows a single part: GM GENUINE 12647160.

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

2 Piston Ring parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE and HASTINGS MANUFACTURING.

Listed part numbers: GM GENUINE 12705385 and HASTINGS MANUFACTURING 2N5670.

This table covers the rocker arms that transfer cam motion to the valves. Read more

5 Rocker Arm parts for the 2020 Chevrolet Blazer come from 2 brands — GM GENUINE and SKP. The "Popular" part is GM GENUINE 24100294.

This group includes GM GENUINE 24100294, GM GENUINE 12654646 and GM GENUINE 12693909 and the remaining parts above.

This table covers the Rocker Arm nuts. Read more

One part is listed for the 2020 Chevrolet Blazer — GM GENUINE 11546449.

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

5 Timing Chain parts are listed for the 2020 Chevrolet Blazer, from GM GENUINE, CLOYES and S.A. GEAR. GM GENUINE 12647895 carries the "Popular" badge.

Listed part numbers: GM GENUINE 12647895, CLOYES C951 and GM GENUINE 55514729, plus the other parts above.

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

8 Timing Chain & Component Kit parts for the 2020 Chevrolet Blazer come from 4 brands — S.A. GEAR, CLOYES, ULTRA-POWER and 1 other brand. The "Popular" part is CLOYES 90951S.

The Economy section: 5 options from S.A. GEAR and ULTRA-POWER. S.A. GEAR 76369T is listed in this group.

Standard Replacement: 3 parts, from CLOYES and GM GENUINE. A representative part number is CLOYES 90951S.

This group includes CLOYES 90951S, S.A. GEAR 76369T and S.A. GEAR 76369S and the remaining parts above.