2026 Buick Envision Engine Parts

This table covers the Circular / Semi-Circular 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 2026 Buick Envision — GM GENUINE 11562126.

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

One part is listed for the 2026 Buick Envision — GM GENUINE 12815887.

This table covers the Crankshaft Seal covers. Read more

This group shows a single part: GM GENUINE 55486914.

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

2 Cylinder Head Bolt parts for the 2026 Buick Envision come from GM GENUINE.

This group includes GM GENUINE 11603109 and GM GENUINE 11548293.

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

This group shows a single part: GM GENUINE 55486594.

This table covers the Engine Block drain plugs. Read more

This group shows a single part: GM GENUINE 11602951.

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

One part is listed for the 2026 Buick Envision — GM GENUINE 12586687.

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

One part is listed for the 2026 Buick Envision — GM GENUINE 11518792.

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

This group shows a single part: GM GENUINE 12748968.

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

This group shows a single part: GM GENUINE 55487414.

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 2026 Buick Envision — GM GENUINE 12718923.

This table covers the Intake Manifold bolts. Read more

This group shows a single part: GM GENUINE 11548171.

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

This group shows a single part: GM GENUINE 55488180.

This table covers the Motor Mount bolts. Read more

This group shows a single part: GM GENUINE 11547918.

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

15 Oil parts are listed for the 2026 Buick Envision, from MOBIL, LIQUI MOLY, VALVOLINE and 2 other brands. ACDELCO 109302 carries the "Popular" badge.

In the Full Synthetic grade, LIQUI MOLY, MOBIL, VALVOLINE and 2 other brands supply 13 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.

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 2026 Buick Envision — GM GENUINE 55497871.

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

GM GENUINE supplies the 3 Oil Cooler Line parts for the 2026 Buick Envision.

This group includes GM GENUINE 90572594, GM GENUINE 55505201 and GM GENUINE 11611503.

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

2 Oil Dipstick / Tube Seal parts for the 2026 Buick Envision come from GM GENUINE.

Listed part numbers: GM GENUINE 24504031 and GM GENUINE 12670252.

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

One part is listed for the 2026 Buick Envision — GM GENUINE 12713651.

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

This group shows a single part: GM GENUINE 12667457.

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

One part is listed for the 2026 Buick Envision — ACDELCO FC275.

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 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

9 Oil Filter parts are listed for the 2026 Buick Envision, from WIX, ACDELCO, FVP and 4 other brands. ACDELCO PF66 carries the "Popular" badge.

In the Economy grade, FVP, PRO-TEC and VARIOUS MFR supply 3 parts: the catalog's value-priced group. A representative part number is FVP R0351.

In the High Performance / Heavy Duty grade, MOBIL and WIX 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 MOBIL M1115A.

The Standard Replacement section lists 4 options from ACDELCO, WIX and HASTINGS / BALDWIN — built to original-equipment specification. ACDELCO PF66 is listed in this group.

Part numbers include ACDELCO PF66, FVP R0351 and PRO-TEC PXL10351, among others listed above.

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 2026 Buick Envision — GM GENUINE 11570754.

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

This group shows a single part: GM GENUINE 55511566.

This table covers the Oil Pressure Relief Valve 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 2026 Buick Envision — GM GENUINE 11570754.

This table covers the Oil Pump bolts. Read more

This group shows a single part: GM GENUINE 11548002.

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 24126713.

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

This group shows a single part: GM GENUINE 12720003.

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

This group shows a single part: GM GENUINE 55514729.

This table covers the guides and dampers that keep the timing chain on its path. Read more

5 Timing Chain Guide / Damper parts for the 2026 Buick Envision come from GM GENUINE. The "Popular" part is GM GENUINE 11547061.

Part numbers include GM GENUINE 11547061, GM GENUINE 55496987 and GM GENUINE 11561619, among others listed above.

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

GM GENUINE supplies both parts for the 2026 Buick Envision.

This group includes GM GENUINE 11547061 and GM GENUINE 12709437.

This table covers the Timing covers. Read more

3 Timing Cover parts for the 2026 Buick Envision come from GM GENUINE.

Part numbers include GM GENUINE 55486913, GM GENUINE 12741848 and GM GENUINE 55514491.

This table covers the Timing Cover bolts. Read more

GM GENUINE supplies both parts for the 2026 Buick Envision.

Part numbers include GM GENUINE 11548002 and GM GENUINE 11547061.

This table covers the seals at the Timing Cover. 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 2026 Buick Envision — GM GENUINE 12741846.

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

One part is listed for the 2026 Buick Envision — GM GENUINE 55509047.

This table covers the Turbocharger Boost 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

This group shows a single part: GM GENUINE 12694431.

This table covers the Turbocharger Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on. Read more

2 Turbocharger Heat Shield parts for the 2026 Buick Envision come from GM GENUINE.

This group includes GM GENUINE 55501898 and GM GENUINE 55503732.

This table covers the Turbocharger Oil Line 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 2026 Buick Envision.

Part numbers include GM GENUINE 12683379 and GM GENUINE 55505740.

This table covers the Turbocharger Wastegate Solenoid actuators. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

GM GENUINE supplies the 3 Turbocharger Wastegate Solenoid / Actuator parts for the 2026 Buick Envision.

Listed part numbers: GM GENUINE 12702113, GM GENUINE 12735957 and GM GENUINE 12748437.

This table covers the Turbocharger Wastegate Solenoid / Actuator retainers. Read more

One part is listed for the 2026 Buick Envision — GM GENUINE 55503301.

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

One part is listed for the 2026 Buick Envision — GM GENUINE 55503188.

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

This group shows a single part: QUALCAST 5265113.

This table covers the seals on each valve stem that control oil into the guides. 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 2026 Buick Envision — GM GENUINE 55490063.

This table covers the oil-control solenoids that command the cam phasers. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

One part is listed for the 2026 Buick Envision — GM GENUINE 55512049.

This table covers the seals at the Variable Valve Timing (VVT) Solenoid Gasket. 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 Variable Valve Timing (VVT) Solenoid Gasket / Seal parts for the 2026 Buick Envision come from GM GENUINE.

Listed part numbers: GM GENUINE 12663572 and GM GENUINE 55499462.

This table covers the cam phaser sprockets used by the variable-valve-timing system. Read more

One part is listed for the 2026 Buick Envision — GM GENUINE 12709014.