2023 GMC Sierra 2500 Engine Parts

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

3 Camshaft parts for the 2023 GMC Sierra 2500 come from 2 brands — GM GENUINE and MELLING.

Part numbers include GM GENUINE 12742436, GM GENUINE 12672469 and MELLING MC1432.

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

4 Camshaft Bearing parts for the 2023 GMC Sierra 2500 come from GM GENUINE.

Listed part numbers: GM GENUINE 19260877, GM GENUINE 19260878 and GM GENUINE 19260879, plus the other parts above.

This table covers the Camshaft bolts. Read more

One part is listed for the 2023 GMC Sierra 2500 — 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 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

4 Camshaft Retainer / Thrust Plate parts are listed for the 2023 GMC Sierra 2500, from DORMAN, FEL-PRO, GM GENUINE and 1 other brand.

This group includes DORMAN 45745, FEL-PRO ES73115 and GM GENUINE 12589016 and the remaining parts above.

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

One part is listed for the 2023 GMC Sierra 2500 — AJUSA 01713900.

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: GM GENUINE 12735504.

This table covers the Connecting Rod bolts. Read more

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 11548432.

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

This group shows a single part: AJUSA 54290100.

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

This group shows a single part: 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

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12729655.

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

3 Crankshaft Main Bearing Cap Bolt parts for the 2023 GMC Sierra 2500 come from GM GENUINE.

Listed part numbers: 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

6 Crankshaft Seal parts are listed for the 2023 GMC Sierra 2500, from GM GENUINE, AJUSA, FEL-PRO and 1 other brand. GM GENUINE 12634614 carries the "Popular" badge.

Part numbers include GM GENUINE 12634614, GM GENUINE 12665076 and AJUSA 15119300, among others listed above.

This table covers the Crankshaft Seal covers. Read more

This group shows a single part: 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

This group shows a single part: GM GENUINE 12627520.

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

This group shows a single part: GM GENUINE 12570326.

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

4 Cylinder Head Bolt parts for the 2023 GMC Sierra 2500 come from 3 brands — GM GENUINE, AJUSA and FEL-PRO.

Part numbers include AJUSA 81074000, FEL-PRO ES73121 and GM GENUINE 11611976, 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

5 Cylinder Head Gasket parts for the 2023 GMC Sierra 2500 come from 5 brands — GM GENUINE, AJUSA, APEX and 2 other brands. The "Popular" part is GM GENUINE 12688186.

Part numbers include GM GENUINE 12688186, AJUSA 10254400 and APEX AHG1448, 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

This group shows a single part: AJUSA 52582800.

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

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 24502262.

This table covers the Engine Block drain plugs. Read more

2 Engine Block Drain Plug parts for the 2023 GMC Sierra 2500 come from GM GENUINE.

Listed part numbers: 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 2023 GMC Sierra 2500 — GM GENUINE 12586687.

This table covers the Engine covers. Read more

2 Engine Cover parts for the 2023 GMC Sierra 2500 come from 2 brands — TECHPRO and VARIOUS MFR.

Part numbers include TECHPRO GM1228175, among others listed above.

This table covers the Engine Cover grommets. Read more

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12594875.

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

This group shows a single part: AJUSA 50530700.

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

2 Exhaust Valve parts are listed for the 2023 GMC Sierra 2500, from GM GENUINE and MELLING.

Listed part numbers: GM GENUINE 12733470 and MELLING V5828.

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

This group shows a single part: GM GENUINE 12680364.

This table covers the Harmonic Balancer bolts. Read more

2 Harmonic Balancer Bolt parts are listed for the 2023 GMC Sierra 2500, from FEL-PRO and GM GENUINE.

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

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

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12748172.

This table covers the Intake Manifold bolts. Read more

This group shows a single part: 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

7 Intake Manifold Gasket parts for the 2023 GMC Sierra 2500 come from 3 brands — GM GENUINE, FEL-PRO and MAHLE / CLEVITE. The "Popular" part is FEL-PRO MS97402.

Part numbers include FEL-PRO MS97402, GM GENUINE 12626354 and FEL-PRO MS97432, among others listed 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

One part is listed for the 2023 GMC Sierra 2500 — MELLING V5827.

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 are listed for the 2023 GMC Sierra 2500, from DEA / MARMON RIDE CONTROL, ANCHOR, GM GENUINE and 2 other brands. DEA / MARMON RIDE CONTROL A20108 carries the "Popular" badge.

Part numbers include DEA / MARMON RIDE CONTROL A20108, ANCHOR 3588 and GM GENUINE 85043935, among others listed above.

This table covers the Motor Mount kits. Read more

ANCHOR supplies both parts for the 2023 GMC Sierra 2500.

Listed part numbers: ANCHOR 300898 and ANCHOR 300970.

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

22 Oil parts are listed for the 2023 GMC Sierra 2500, from MOBIL, LIQUI MOLY, VALVOLINE and 4 other brands. ACDELCO 109324 carries the "Popular" badge.

In the Full Synthetic grade, LIQUI MOLY, MOBIL, VALVOLINE and 4 other brands supply 20 parts: full-synthetic oils. A representative part number is ACDELCO 109324.

The High Mileage (>75,000 Miles) section lists 2 options from MOBIL — oils grouped for high-mileage engines. MOBIL 123842 is listed in this group.

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

3 Oil Cooler Gasket parts for the 2023 GMC Sierra 2500 come from 3 brands — DORMAN, GM GENUINE and MAHLE / CLEVITE.

This group includes DORMAN 66219, GM GENUINE 23129010 and MAHLE / CLEVITE B33562.

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 2023 GMC Sierra 2500 — GM GENUINE 85724971.

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

This group shows a single part: GM GENUINE 84240295.

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 12631281.

This table covers the Oil Dipstick tubes. Read more

One part is listed for the 2023 GMC Sierra 2500 — 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 2023 GMC Sierra 2500 come from 2 brands — GM GENUINE and FEL-PRO.

Listed part numbers: FEL-PRO 73889, GM GENUINE 24504031 and GM GENUINE 12676951.

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

4 Oil Drain Plug parts are listed for the 2023 GMC Sierra 2500, from DORMAN and GM GENUINE.

Part numbers include DORMAN 090948CD, DORMAN 090948 and GM GENUINE 55577568, 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 2023 GMC Sierra 2500 come from 4 brands — DORMAN, GM GENUINE, AJUSA and 1 other brand. The "Popular" part is GM GENUINE 12616850.

This group includes GM GENUINE 12616850, AJUSA 01288800 and DORMAN 097119 and the remaining parts above.

This table covers the Oil Drain Plug inserts. Read more

This group shows a single part: GM GENUINE 11503302.

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

4 Oil Filler Cap parts are listed for the 2023 GMC Sierra 2500, from ACDELCO, CALORSTAT, DORMAN and 1 other brand.

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

This group shows a single part: GM GENUINE 24100002.

This table covers the Oil Filler tubes. Read more

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12668614.

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 are listed for the 2023 GMC Sierra 2500, from VARIOUS MFR, WIX, ACDELCO and 6 other brands. WIX WL10255XP carries the "Popular" badge.

In the Economy grade, FRAM, FVP, PRO-TEC and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FRAM FE10575.

In the High Performance / Heavy Duty grade, WIX and MOBIL 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 WIX WL10255XP.

The Standard Replacement section lists 6 options from ACDELCO, WIX, HASTINGS / BALDWIN and 2 other brands — built to original-equipment specification. ACDELCO PF63 is listed in this group.

This table covers the Oil Filter adapters. Read more

This group shows a single part: GM GENUINE 12600225.

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

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 11546667.

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

One part is listed for the 2023 GMC Sierra 2500 — 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

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12638820.

This table covers the Oil nozzles. Read more

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12678499.

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

This group shows a single part: GM GENUINE 12739177.

This table covers the Oil Pan bolts. Read more

GM GENUINE supplies both parts for the 2023 GMC Sierra 2500.

Listed part numbers: GM GENUINE 12554990 and GM GENUINE 11588725.

This table covers the Oil Pan covers. Read more

One part is listed for the 2023 GMC Sierra 2500 — 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

4 Oil Pan Gasket parts are listed for the 2023 GMC Sierra 2500, from GM GENUINE and AJUSA.

Part numbers include AJUSA 14115000, GM GENUINE 12666993 and GM GENUINE 12623359, 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

3 Oil Pump parts are listed for the 2023 GMC Sierra 2500, from GM GENUINE and MELLING.

Part numbers include GM GENUINE 12733670, GM GENUINE 12744612 and MELLING M595.

This table covers the Oil Pump bolts. Read more

This group shows a single part: 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

This group shows a single part: 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

One part is listed for the 2023 GMC Sierra 2500 — 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

This group shows a single part: GM GENUINE 12638433.

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

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12619978.

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

5 Piston parts for the 2023 GMC Sierra 2500 come from GM GENUINE.

Part numbers include GM GENUINE 12699527, GM GENUINE 12699528 and GM GENUINE 12699529, among others listed above.

This table covers the Piston Pin retainers. Read more

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 01647383.

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

2 Piston Ring parts for the 2023 GMC Sierra 2500 come from GM GENUINE.

Part numbers include GM GENUINE 12735470 and GM GENUINE 12661872.

This table covers the pushrods that transfer lifter motion to the rocker arms. Read more

3 Push Rod parts for the 2023 GMC Sierra 2500 come from 3 brands — GM GENUINE, MELLING and SBI.

Listed part numbers: GM GENUINE 12619828, MELLING MPR696 and SBI 1901555.

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

3 Rocker Arm parts are listed for the 2023 GMC Sierra 2500, from GM GENUINE, MELLING and SBI.

Part numbers include GM GENUINE 12619829, MELLING MR913 and SBI 1801343.

This table covers the Rocker Arm nuts. Read more

This group shows a single part: GM GENUINE 11546449.

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

5 Timing Chain parts for the 2023 GMC Sierra 2500 come from 5 brands — MELLING, CLOYES, GM GENUINE and 2 other brands. The "Popular" part is MELLING 3SRH60.

This group includes MELLING 3SRH60, CLOYES 94205 and GM GENUINE 12646387 and the remaining parts above.

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

10 Timing Chain & Component Kit parts are listed for the 2023 GMC Sierra 2500, from MELLING, CLOYES, PREFERRED COMPONENTS INC and 2 other brands. CLOYES 94205SCX carries the "Popular" badge.

Economy: 2 parts, from PREFERRED COMPONENTS INC and S.A. GEAR. A representative part number is PREFERRED COMPONENTS INC TS10361.

In the High Performance grade, MELLING and CLOYES supply 3 parts: engineered beyond original-equipment specification. A representative part number is CLOYES 93679X5Z.

The Standard Replacement section: 5 options from CLOYES, MELLING and ENGINETECH. CLOYES 94205SCX is listed in this group.

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

6 Timing Chain Tensioner parts are listed for the 2023 GMC Sierra 2500, from GM GENUINE, CLOYES, MELLING and 2 other brands. CLOYES 95977 carries the "Popular" badge.

This group includes CLOYES 95977, GM GENUINE 12630107 and GM GENUINE 11515758 and the remaining parts above.

This table covers the Timing covers. Read more

3 Timing Cover parts for the 2023 GMC Sierra 2500 come from 2 brands — GM GENUINE and SKP.

Part numbers include GM GENUINE 12691692, GM GENUINE 12734113 and SKP SK12691692.

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

4 Timing Crank Sprocket parts are listed for the 2023 GMC Sierra 2500, from GM GENUINE, MELLING, PREFERRED COMPONENTS INC and 1 other brand.

Listed part numbers: GM GENUINE 12713934, MELLING S1355 and PREFERRED COMPONENTS INC G56067, plus the other parts above.

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

One part is listed for the 2023 GMC Sierra 2500 — ROTOMASTER K1050111N.

This table covers the fasteners that mount the turbocharger. Read more

This group shows a single part: GM GENUINE 11547786.

This table covers the Turbocharger Up pipes. Read more

This group shows a single part: GM GENUINE 12688021.

This table covers the Valve covers. Read more

2 Valve Cover parts for the 2023 GMC Sierra 2500 come from GM GENUINE.

This group includes GM GENUINE 12723317 and GM GENUINE 12727455.

This table covers the Valve Cover Bolt screws. Typical signs include a rounded head, a seeping bleeder, or a fastener that will not hold torque. Do not force a new screw into a stripped hole — repair the thread first. Read more

This group shows a single part: GM GENUINE 11547061.

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 2023 GMC Sierra 2500, from GM GENUINE, AJUSA, APEX and 2 other brands. GM GENUINE 12619787 carries the "Popular" badge.

This group includes GM GENUINE 12619787, AJUSA 11162000 and APEX AVC1351 and the remaining parts 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

One part is listed for the 2023 GMC Sierra 2500 — SBI 1403204.

This table covers the lifters / tappets that transfer cam motion to the valves. Read more

4 Valve Lifter parts are listed for the 2023 GMC Sierra 2500, from AJUSA, GM GENUINE, MELLING and 1 other brand.

Listed part numbers: AJUSA 85024800, GM GENUINE 12698945 and MELLING JB2079, plus the other parts above.

This table covers the guides that keep each lifter aligned. Read more

One part is listed for the 2023 GMC Sierra 2500 — GM GENUINE 12595365.

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

7 Valve Spring parts for the 2023 GMC Sierra 2500 come from 3 brands — MELLING, GM GENUINE and SBI. The "Popular" part is GM GENUINE 12728733.

Part numbers include GM GENUINE 12728733, SBI 1601688 and MELLING VSK461208LT, among others listed above.

This table covers the Valve Spring retainers. Read more

2 Valve Spring Retainer parts for the 2023 GMC Sierra 2500 come from 2 brands — GM GENUINE and MELLING.

Listed part numbers: GM GENUINE 10166344 and MELLING VSR709.

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

3 Valve Spring Retainer Keeper parts for the 2023 GMC Sierra 2500 come from 3 brands — GM GENUINE, MELLING and SBI.

Listed part numbers: GM GENUINE 10166345, MELLING VL760 and SBI 1211085.