2023 Chevrolet Express 2500 Engine Parts

This table covers the Balance shafts. Read more

This group shows a single part: GM GENUINE 12653449.

This table covers the Balance Shaft 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

2 Balance Shaft Bearing parts for the 2023 Chevrolet Express 2500 come from GM GENUINE.

Part numbers include GM GENUINE 12629467 and GM GENUINE 12629468.

This table covers the chains that drive the balance shafts. Read more

6 Balance Shaft Chain parts are listed for the 2023 Chevrolet Express 2500, from S.A. GEAR, GM GENUINE and MELLING. GM GENUINE 12632727 carries the "Popular" badge.

Listed part numbers: GM GENUINE 12632727, S.A. GEAR C1199 and MELLING 1089, plus the other parts above.

This table covers the guides that keep the balance-shaft chain on its path. Read more

2 Balance Shaft Chain Guide parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE and S.A. GEAR.

Part numbers include GM GENUINE 12632728 and S.A. GEAR 71285.

This table covers the Balance Shaft sprockets. Read more

3 Balance Shaft Sprocket parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE and S.A. GEAR.

Part numbers include GM GENUINE 12690616, GM GENUINE 12632725 and S.A. GEAR S1498.

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

4 Camshaft parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE and MELLING.

This group includes GM GENUINE 12742436, GM GENUINE 12672469 and MELLING MC1441 and the remaining 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

GM GENUINE supplies the 5 Camshaft Bearing parts for the 2023 Chevrolet Express 2500. GM GENUINE 12686894 carries the "Popular" badge. 2 parts fit every engine; the other 3 are engine-specific.

Listed part numbers: GM GENUINE 12686894, GM GENUINE 12679049 and GM GENUINE 19260877, plus the other parts above.

This table covers the Camshaft bolts. Read more

This group shows a single part: GM GENUINE 11561455.

This table covers the Camshaft Dowel pins. Read more

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 24575061.

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

6 Camshaft Retainer / Thrust Plate parts for the 2023 Chevrolet Express 2500 come from 5 brands — ELRING, FEL-PRO, MELLING and 2 other brands. The "Popular" part is FEL-PRO ES73115. 4 parts fit every engine; the other 2 are engine-specific.

Part numbers include FEL-PRO ES73115, MELLING MF127 and DORMAN 45745, among others listed above.

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

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 12648238.

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

GM GENUINE supplies both parts for the 2023 Chevrolet Express 2500.

Listed part numbers: GM GENUINE 12656818 and GM GENUINE 12735504.

This table covers the Connecting Rod bolts. Read more

2 Connecting Rod Bolt parts for the 2023 Chevrolet Express 2500 come from GM GENUINE. Every part fits both the 4.3L V6 and the 6.6L V8.

This group includes GM GENUINE 11548432 and 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

ELRING supplies both parts for the 2023 Chevrolet Express 2500.

Part numbers include ELRING B45740 and ELRING B80920.

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

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 12708884.

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

2 Crankshaft Main Bearing parts for the 2023 Chevrolet Express 2500 come from GM GENUINE.

Listed part numbers: GM GENUINE 12729654 and GM GENUINE 12729655.

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

4 Crankshaft Main Bearing Cap Bolt parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE and ELRING. 3 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: ELRING B75610, GM GENUINE 11546565 and GM GENUINE 11548076, plus the other parts 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

6 Crankshaft Seal parts for the 2023 Chevrolet Express 2500 come from 4 brands — GM GENUINE, ELRING, FEL-PRO and 1 other brand. The "Popular" part is GM GENUINE 12634614. 4 parts fit every engine; the other 2 are engine-specific.

Part numbers include GM GENUINE 12634614, GM GENUINE 12665076 and ELRING 722810, among others listed above.

This table covers the Crankshaft Seal covers. Read more

3 Crankshaft Seal Cover parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE and DORMAN.

Listed part numbers: DORMAN 635786, GM GENUINE 12705663 and GM GENUINE 12705664.

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

3 Crankshaft Seal Gasket parts are listed for the 2023 Chevrolet Express 2500, from ELRING and GM GENUINE. 1 part fits every engine; the other 2 are engine-specific.

This group includes ELRING 837760, ELRING 755010 and GM GENUINE 12627520.

This table covers the cylinder heads that close the top of the block. Read more

This group shows a single part: GM GENUINE 12677840.

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

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 12570326.

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

4 Cylinder Head Bolt parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE, FEL-PRO and MAHLE / CLEVITE. 2 parts fit every engine; the other 2 are engine-specific.

Part numbers include FEL-PRO ES73121, GM GENUINE 11611976 and GM GENUINE 11546959, among others listed 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

9 Cylinder Head Gasket parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE, FEL-PRO, APEX and 4 other brands. GM GENUINE 12632968 carries the "Popular" badge.

Listed part numbers: GM GENUINE 12632968, APEX AHG1448 and ELRING 690021, plus the other 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

3 Cylinder Head Gasket Set parts are listed for the 2023 Chevrolet Express 2500, from ELRING and MAHLE / CLEVITE.

Part numbers include ELRING 839780, ELRING B01830 and MAHLE / CLEVITE HS55351.

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

This group shows a single part: GM GENUINE 24502262.

This table covers the Engine Block drain plugs. Read more

GM GENUINE supplies both parts for the 2023 Chevrolet Express 2500. All of them fit every engine offered in the 2023 Express 2500.

This group includes GM GENUINE 11602951 and GM GENUINE 11546667.

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

This group shows a single part: GM GENUINE 12586687.

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 2023 Chevrolet Express 2500 — ELRING 918300.

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 2023 Chevrolet Express 2500 come from 3 brands — GM GENUINE, MELLING and SBI.

This group includes GM GENUINE 12678745, GM GENUINE 12733470 and MELLING V3433 and the remaining parts above.

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

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 12680364.

This table covers the Harmonic Balancer bolts. Read more

2 Harmonic Balancer Bolt parts for the 2023 Chevrolet Express 2500 come from 2 brands — FEL-PRO and GM GENUINE. Every part fits both the 4.3L V6 and the 6.6L V8.

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

This table covers the Intake Manifold bolts. Read more

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 11610472.

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

11 Intake Manifold Gasket parts are listed for the 2023 Chevrolet Express 2500, from MAHLE / CLEVITE, FEL-PRO, GM GENUINE and 1 other brand. FEL-PRO MS97402 carries the "Popular" badge. 2 parts fit every engine; the other 9 are engine-specific.

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: ELRING 047940.

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 2023 Chevrolet Express 2500 come from 3 brands — MELLING, GM GENUINE and SBI.

This group includes GM GENUINE 12619825, MELLING V3432 and MELLING V5827 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

9 Motor Mount parts for the 2023 Chevrolet Express 2500 come from 3 brands — GM GENUINE, ANCHOR and DEA / MARMON RIDE CONTROL. The "Popular" part is GM GENUINE 23349745.

Part numbers include GM GENUINE 23349745, GM GENUINE 23349746 and ANCHOR 3661, among others listed above.

This table covers the Motor Mount bolts. Read more

GM GENUINE supplies both parts for the 2023 Chevrolet Express 2500. All of them fit every engine offered in the 2023 Express 2500.

This group includes GM GENUINE 11516940 and GM GENUINE 11517706.

This table covers the Motor Mount kits. Read more

This group shows a single part: ANCHOR 301098.

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 2023 Chevrolet Express 2500 come from 6 brands — MOBIL, LIQUI MOLY, VALVOLINE and 3 other brands. The "Popular" part is ACDELCO 109324. Every part fits both the 4.3L V6 and the 6.6L V8.

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 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

5 Oil Cooler Gasket parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE, DORMAN, FEL-PRO and 1 other brand. 1 part fits every engine; the other 4 are engine-specific.

Part numbers include DORMAN 66219, FEL-PRO 73212 and GM GENUINE 23129009, 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

3 Oil Cooler Line parts for the 2023 Chevrolet Express 2500 come from GM GENUINE.

Listed part numbers: GM GENUINE 84994161, GM GENUINE 84906732 and GM GENUINE 85626951.

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

GM GENUINE supplies both parts for the 2023 Chevrolet Express 2500.

Listed part numbers: GM GENUINE 23378668 and GM GENUINE 84240291.

This table covers the Oil Dipstick tubes. Read more

6 Oil Dipstick / Tube parts for the 2023 Chevrolet Express 2500 come from GM GENUINE.

Listed part numbers: GM GENUINE 12678819, GM GENUINE 12678814 and GM GENUINE 12684848, plus the other parts above.

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 2023 Chevrolet Express 2500, from ELRING, FEL-PRO and GM GENUINE. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include ELRING 584210, FEL-PRO 73889 and GM GENUINE 24504031.

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

8 Oil Drain Plug parts for the 2023 Chevrolet Express 2500 come from 3 brands — DORMAN, GM GENUINE and VAICO. The "Popular" part is DORMAN 090034. 1 part fits every engine; the other 7 are engine-specific.

Listed part numbers: DORMAN 090034, DORMAN 090175 and DORMAN 090948CD, 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

4 Oil Drain Plug Gasket parts are listed for the 2023 Chevrolet Express 2500, from DORMAN, GM GENUINE and VICTOR REINZ. All of them fit every engine offered in the 2023 Express 2500.

This group includes DORMAN 097119, DORMAN 97119 and GM GENUINE 12616850 and the remaining parts above.

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

4 Oil Filler Cap parts for the 2023 Chevrolet Express 2500 come from 4 brands — ACDELCO, CALORSTAT, DORMAN and 1 other brand. Every part fits both the 4.3L V6 and the 6.6L V8.

Part numbers include ACDELCO FC279, 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

3 Oil Filler Cap Gasket parts are listed for the 2023 Chevrolet Express 2500, from ELRING and GM GENUINE. 1 part fits every engine; the other 2 are engine-specific.

Part numbers include ELRING 592250, ELRING 823620 and GM GENUINE 24100002.

This table covers the Oil Filler tubes. Read more

This group shows a single part: GM GENUINE 12732247.

This table covers the Oil Filler Tube grommets. Read more

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 12610201.

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

12 Oil Filter parts for the 2023 Chevrolet Express 2500 come from 9 brands — VARIOUS MFR, WIX, ACDELCO and 6 other brands. The "Popular" part is WIX WL10255XP. Every part fits both the 4.3L V6 and the 6.6L V8.

The Economy section lists 4 options from FRAM, FVP, PRO-TEC and 1 other brand — the catalog's value-priced group. FRAM FE10575 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 WL10255XP is listed in this group.

In the Standard Replacement grade, ACDELCO, WIX, HASTINGS / BALDWIN and 2 other brands supply 6 parts: built to original-equipment specification. A representative part number is ACDELCO PF63.

This table covers the Oil Filter adapters. Read more

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 12600225.

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

GM GENUINE supplies both parts for the 2023 Chevrolet Express 2500.

Part numbers include GM GENUINE 12631676 and GM GENUINE 12631675.

This table covers the seals at the Oil Filter Housing. 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 Oil Filter Housing Seal parts for the 2023 Chevrolet Express 2500 come from 2 brands — ELRING and GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include ELRING 919080 and GM GENUINE 12610160.

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

3 Oil Galley Plug parts for the 2023 Chevrolet Express 2500 come from 2 brands — MELLING and GM GENUINE. 1 part fits every engine; the other 2 are engine-specific.

This group includes GM GENUINE 11546667, MELLING MOGP300 and MELLING MOGP200.

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

2 Oil Level Sensor parts for the 2023 Chevrolet Express 2500 come from GM GENUINE.

This group includes GM GENUINE 12696436 and GM GENUINE 12696433.

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 2023 Chevrolet Express 2500 come from 2 brands — ELRING and GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include ELRING 351330 and GM GENUINE 12638820.

This table covers the Oil nozzles. Read more

This group shows a single part: GM GENUINE 12678499.

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

4 Oil Pan parts are listed for the 2023 Chevrolet Express 2500, from GM GENUINE, DORMAN and SPECTRA PREMIUM.

This group includes DORMAN 264349, GM GENUINE 12739178 and GM GENUINE 12739177 and the remaining parts above.

This table covers the Oil Pan bolts. Read more

2 Oil Pan Bolt parts for the 2023 Chevrolet Express 2500 come from GM GENUINE. Every part fits both the 4.3L V6 and the 6.6L V8.

Part numbers include GM GENUINE 12554990 and GM GENUINE 11588725.

This table covers the Oil Pan covers. Read more

This group shows a single part: GM GENUINE 12630766.

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

8 Oil Pan Gasket parts for the 2023 Chevrolet Express 2500 come from 2 brands — GM GENUINE and ELRING. The "Popular" part is GM GENUINE 12666993. 2 parts fit every engine; the other 6 are engine-specific.

Part numbers include GM GENUINE 12666993, GM GENUINE 12621086 and ELRING 837770, among others listed above.

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

4 Oil Pump parts for the 2023 Chevrolet Express 2500 come from 2 brands — GM GENUINE and MELLING.

Part numbers include GM GENUINE 12744611, GM GENUINE 12744612 and MELLING M565, among others listed above.

This table covers the Oil Pump bolts. Read more

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 11610074.

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

One part is listed for the 2023 Chevrolet Express 2500 — GM GENUINE 12686431.

This table covers the seals at the Oil Pump Control Valve / Solenoid. 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 12626252.

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 2023 Chevrolet Express 2500 — GM GENUINE 12638433.

This table covers the pickup tubes and screens that feed the oil pump. Read more

One part is listed for the 2023 Chevrolet Express 2500 — MELLING 419S.

This table covers the windage trays that keep crank windage out of the oil sump. Read more