1991 Buick Century Engine Parts

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

One part is listed for the 1991 Buick Century — MELLING MC1290.

This table covers the Camshaft & Lifter kits. Read more

One part is listed for the 1991 Buick Century — MELLING CLMC1290.

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

One part is listed for the 1991 Buick Century — ENGINE PRO 151364.

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 1991 Buick Century — KING ENGINE BEARINGS CR605SI.

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 1991 Buick Century.

Listed part numbers: ELRING 698040 and ELRING 687390.

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: KING ENGINE BEARINGS MB4080SI.

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

ELRING supplies both parts for the 1991 Buick Century.

Part numbers include ELRING 835030 and ELRING 687570.

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

One part is listed for the 1991 Buick Century — ELRING 687380.

This table covers the wear sleeves used to restore a Cylinder seal surface. Read more

MELLING supplies both parts for the 1991 Buick Century.

Listed part numbers: MELLING CSL141 and MELLING CSL241.

This table covers the Expansion 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 1991 Buick Century — MELLING MPE276R.

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

This group shows a single part: MELLING V1561.

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

6 Oil parts for the 1991 Buick Century come from VALVOLINE. The "Popular" part is VALVOLINE VV1556.

In the High Mileage (>75,000 Miles) grade, VALVOLINE supplies 4 parts: oils grouped for high-mileage engines. A representative part number is VALVOLINE VV1556.

The Synthetic Blend section lists 2 options from VALVOLINE — synthetic-blend oils. VALVOLINE 797975 is listed in this group.

This group includes VALVOLINE VV1556, VALVOLINE VV179 and VALVOLINE 881163 and the remaining parts above.

This table covers the Oil Cooler Mounting kits. Read more

HAYDEN supplies both parts for the 1991 Buick Century.

Part numbers include HAYDEN 238 and HAYDEN 153.

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

One part is listed for the 1991 Buick Century — ELRING 584210.

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

This group shows a single part: ELRING 823400.

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

One part is listed for the 1991 Buick Century — ELRING 056130.

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

This group shows a single part: MOTORAD MO96.

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 1991 Buick Century, from ELRING and GM GENUINE.

Part numbers include ELRING 592250, ELRING 823620 and 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

8 Oil Filter parts for the 1991 Buick Century come from 5 brands — VARIOUS MFR, WIX, HENGST and 2 other brands. The "Popular" part is WIX 51040XP.

The Economy section lists 3 options from FVP, PRO-TEC and VARIOUS MFR — the catalog's value-priced group. FVP R1040 is listed in this group.

The High Performance / Heavy Duty section lists 1 option from WIX — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. WIX 51040XP is listed in this group.

In the Standard Replacement grade, HENGST, WIX and VARIOUS MFR supply 4 parts: built to original-equipment specification. A representative part number is WIX 51040.

Listed part numbers: WIX 51040XP, FVP R1040 and PRO-TEC PXL51040, plus the other parts above.

This table covers the Oil Filter Bypass valves. 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

This group shows a single part: DORMAN 927841.

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

This group shows a single part: ELRING 700550.

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 for the 1991 Buick Century come from 2 brands — MELLING and SEALED POWER.

The High Volume / Pressure section lists 1 option from MELLING — grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. MELLING M134HV is listed in this group.

Standard Replacement: 2 parts, from MELLING and SEALED POWER. A representative part number is MELLING M134.

This group includes MELLING M134HV, MELLING M134 and SEALED POWER 2244152.

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

One part is listed for the 1991 Buick Century — MELLING 243S.

This table covers the Oil Pump Screen Installation tools. This is a service tool, not a wear part — match the application in the notes. Read more

This group shows a single part: MELLING MCAT75.

This table covers the Oil Pump shafts. Read more

This group shows a single part: MELLING IS95.

This table covers the Oil Pump Shaft Guide retainers. Read more

One part is listed for the 1991 Buick Century — MELLING M55024.

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

One part is listed for the 1991 Buick Century — MAHLE / CLEVITE 41473CP.

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

4 Push Rod parts are listed for the 1991 Buick Century, from MELLING and QUALCAST.

Part numbers include MELLING MPR375, MELLING MPR376 and QUALCAST 746375, among others listed above.

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

2 Rocker Arm parts for the 1991 Buick Century come from MELLING.

Part numbers include MELLING MR864 and MELLING MRK407.

This table covers the balls a rocker arm pivots on. Read more

One part is listed for the 1991 Buick Century — MELLING MRM1721.

This table covers the Rocker Arm nuts. Read more

MELLING supplies both parts for the 1991 Buick Century.

Part numbers include MELLING MRM1723 and MELLING MRM1720.

This table covers the Rocker Arm studs. Read more

This group shows a single part: MELLING MRDS948.

This table covers the Timing Cam sprockets. Read more

This group shows a single part: CLOYES S620T.

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

3 Timing Chain parts are listed for the 1991 Buick Century, from CLOYES, MELLING and PREFERRED COMPONENTS INC.

Listed part numbers: CLOYES C385 and MELLING 385, plus the other parts above.

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

4 Timing Chain & Component Kit parts for the 1991 Buick Century come from 3 brands — CLOYES, SKP and MELLING.

The Economy section: 1 option from SKP. SKP SKC3048K is listed in this group.

Standard Replacement: 3 parts, from CLOYES and MELLING. A representative part number is CLOYES C3048K.

Part numbers include SKP SKC3048K, CLOYES C3048K and CLOYES 90385SC, among others listed above.

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

One part is listed for the 1991 Buick Century — CLOYES 95131.

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

This group shows a single part: CLOYES S619.

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

2 Valve Cover Gasket parts for the 1991 Buick Century come from ELRING.

Part numbers include ELRING 754490 and ELRING 688940.

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

2 Valve Lifter parts for the 1991 Buick Century come from 2 brands — MELLING and SEALED POWER.

Part numbers include MELLING JB2095 and SEALED POWER HT2095.

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

This group shows a single part: ELRING 727170.