2025 GMC Yukon XL Engine Parts

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

2 Camshaft parts are listed for the 2025 GMC Yukon XL, from GM GENUINE and MELLING.

This group includes GM GENUINE 12664912 and MELLING MC1435.

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 both parts for the 2025 GMC Yukon XL.

This group includes GM GENUINE 12679049 and GM GENUINE 12686894.

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 2025 GMC Yukon XL — 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

2 Camshaft Retainer / Thrust Plate parts for the 2025 GMC Yukon XL come from 2 brands — FEL-PRO and GM GENUINE.

This group includes FEL-PRO ES73115 and GM GENUINE 12589016.

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

One part is listed for the 2025 GMC Yukon XL — GM GENUINE 12714549.

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

One part is listed for the 2025 GMC Yukon XL — GM GENUINE 12735504.

This table covers the Connecting Rod bolts. Read more

This group shows a single part: GM GENUINE 11548432.

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 12729655.

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

GM GENUINE supplies the 3 Crankshaft Main Bearing Cap Bolt parts for the 2025 GMC Yukon XL.

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

3 Crankshaft Seal parts for the 2025 GMC Yukon XL come from 2 brands — GM GENUINE and FEL-PRO.

Part numbers include FEL-PRO TCS46221, GM GENUINE 12634614 and GM GENUINE 12665076.

This table covers the Crankshaft Seal covers. Read more

2 Crankshaft Seal Cover parts are listed for the 2025 GMC Yukon XL, from DORMAN and GM GENUINE.

Part numbers include 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

One part is listed for the 2025 GMC Yukon XL — GM GENUINE 12627520.

This table covers the kits that disable cylinder deactivation. Read more

This group shows a single part: MELLING MDK700HPT3.

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

This group shows a single part: GM GENUINE 12747732.

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

One part is listed for the 2025 GMC Yukon XL — GM GENUINE 12570326.

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

GM GENUINE supplies both parts for the 2025 GMC Yukon XL.

This group includes GM GENUINE 11611976 and GM GENUINE 11546959.

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

One part is listed for the 2025 GMC Yukon XL — GM GENUINE 12688943.

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 2025 GMC Yukon XL.

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 the Engine covers. Read more

5 Engine Cover parts are listed for the 2025 GMC Yukon XL, from TECHPRO and VARIOUS MFR. TECHPRO GM1228179 carries the "Popular" badge.

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

This table covers the Engine Cover grommets. Read more

This group shows a single part: GM GENUINE 12594875.

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

This group shows a single part: GM GENUINE 10121502.

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

3 Exhaust Valve parts for the 2025 GMC Yukon XL come from 3 brands — GM GENUINE, MELLING and SBI.

Part numbers include GM GENUINE 12678746, MELLING V5815 and SBI 13433.

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

One part is listed for the 2025 GMC Yukon XL — GM GENUINE 12680364.

This table covers the Harmonic Balancer bolts. Read more

2 Harmonic Balancer Bolt parts for the 2025 GMC Yukon XL come from 2 brands — FEL-PRO and GM GENUINE.

Listed part numbers: 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

This group shows a single part: GM GENUINE 12748172.

This table covers the Intake Manifold bolts. Read more

One part is listed for the 2025 GMC Yukon XL — 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

GM GENUINE supplies both parts for the 2025 GMC Yukon XL.

Listed part numbers: GM GENUINE 12626354 and GM GENUINE 12693081.

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

2 Intake Valve parts for the 2025 GMC Yukon XL come from 2 brands — MELLING and SBI.

This group includes MELLING V5814 and SBI 13432.

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

6 Motor Mount parts for the 2025 GMC Yukon XL come from 2 brands — ANCHOR and GM GENUINE. The "Popular" part is GM GENUINE 85806750.

Part numbers include GM GENUINE 85806750, GM GENUINE 85806751 and ANCHOR 3556, among others listed above.

This table covers the Motor Mount kits. Read more

4 Motor Mount Kit parts for the 2025 GMC Yukon XL come from ANCHOR.

Part numbers include ANCHOR 300852, ANCHOR 300854 and ANCHOR 300963, among others listed above.