1991 Acura NSX Engine Parts

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

3 Camshaft Repair Sleeve parts are listed for the 1991 Acura NSX, from SCHAEFFLER, SKF and TIMKEN.

Listed part numbers: SCHAEFFLER SR3462, SKF 99114 and TIMKEN KWK99112.

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

4 Camshaft Seal parts are listed for the 1991 Acura NSX, from AJUSA, APEX, SKF and 1 other brand.

This group includes AJUSA 15059800, APEX ATC1460 and SKF 11672 and the remaining parts above.

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

2 Conversion / Lower Gasket Set parts for the 1991 Acura NSX come from 2 brands — AJUSA and APEX.

This group includes AJUSA 54085000 and APEX ACS1046.

This table covers the sleeves used to restore a grooved crankshaft seal surface. Read more

8 Crankshaft Repair Sleeve parts are listed for the 1991 Acura NSX, from SCHAEFFLER, TIMKEN, BCA and 3 other brands. BCA NS99315 carries the "Popular" badge.

This group includes BCA NS99315, NATIONAL 99315 and SCHAEFFLER SR3549 and the remaining 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

14 Crankshaft Seal parts are listed for the 1991 Acura NSX, from APEX, SCHAEFFLER, TIMKEN and 8 other brands. MAHLE / CLEVITE 66986 carries the "Popular" badge.

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

4 Cylinder Head Gasket parts for the 1991 Acura NSX come from 3 brands — AJUSA, APEX and FEL-PRO.

Listed part numbers: AJUSA 10112100, AJUSA 52308400 and APEX AHG146, 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

2 Cylinder Head Gasket Set parts for the 1991 Acura NSX come from 2 brands — AJUSA and APEX.

Listed part numbers: AJUSA 52151300 and APEX AHS1046.

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

One part is listed for the 1991 Acura NSX — KAT'S HEATERS 11428.

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

2 Engine Kit Gasket Set parts for the 1991 Acura NSX come from 2 brands — AJUSA and APEX.

Listed part numbers: AJUSA 50164500 and APEX AFS1046.

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

4 Intake Manifold Gasket parts for the 1991 Acura NSX come from 4 brands — AJUSA, APEX, FEL-PRO and 1 other brand.

Part numbers include AJUSA 13130600, APEX AMS1460 and FEL-PRO MS97288, among others listed above.

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

2 Intake Plenum Gasket parts are listed for the 1991 Acura NSX, from APEX and FEL-PRO.

Listed part numbers: APEX AMS1462 and FEL-PRO MS97342.

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

4 Motor Mount parts are listed for the 1991 Acura NSX, from ANCHOR, DEA / MARMON RIDE CONTROL, PIONEER and 1 other brand.

Part numbers include ANCHOR 9030, DEA / MARMON RIDE CONTROL A6560 and PIONEER 609030, among others listed above.

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

13 Oil parts are listed for the 1991 Acura NSX, from MOBIL and IDEMITSU. MOBIL 125195 carries the "Popular" badge.

In the Full Synthetic grade, MOBIL and IDEMITSU supply 6 parts: full-synthetic oils. A representative part number is MOBIL 125195.

The High Mileage (>75,000 Miles) section lists 4 options from MOBIL — oils grouped for high-mileage engines. MOBIL 125201 is listed in this group.

In the Racing grade, IDEMITSU supplies 1 part: grouped under the catalog's "Racing" designation — the notes column spells out what sets them apart. A representative part number is IDEMITSU 30018100750.

In the Synthetic Blend grade, MOBIL supplies 2 parts: synthetic-blend oils. A representative part number is MOBIL 124406.

This table covers the Oil Cooler Mounting kits. Read more

2 Oil Cooler Mounting Kit parts for the 1991 Acura NSX come from HAYDEN.

Part numbers include HAYDEN 238 and HAYDEN 153.

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

6 Oil Drain Plug parts are listed for the 1991 Acura NSX, from DORMAN, AGS, BECK/ARNLEY and 1 other brand. AGS ODP00007 carries the "Popular" badge.

Listed part numbers: AGS ODP00007, DORMAN 090053 and BECK/ARNLEY 0160088, 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

5 Oil Drain Plug Gasket parts for the 1991 Acura NSX come from 4 brands — ULTRA-POWER, DORMAN, APEX and 1 other brand. The "Popular" part is DORMAN 095144.

Part numbers include DORMAN 095144, APEX ADP1909 and FEL-PRO 73346, among others listed above.

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

4 Oil Filler Cap parts are listed for the 1991 Acura NSX, from BECK/ARNLEY, GATES, MOTORAD and 1 other brand.

This group includes BECK/ARNLEY 0160125, GATES 31109 and MOTORAD MO81 and the remaining parts above.

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

23 Oil Filter parts are listed for the 1991 Acura NSX, from PUROLATOR, FAMOUS BRAND, FRAM and 12 other brands. FRAM FP8212 carries the "Popular" badge.

In the Economy grade, PUROLATOR, FAMOUS BRAND, CHAMP / LUBER-FINER and 10 other brands supply 19 parts: the catalog's value-priced group. A representative part number is FRAM FP8212.

The Standard Replacement section lists 4 options from HASTINGS / BALDWIN, FRAM and WIX — built to original-equipment specification. FRAM PH8212 is listed in this group.

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 1991 Acura NSX — WELLS 1S6556.

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

5 Oil Pan Gasket parts are listed for the 1991 Acura NSX, from FEL-PRO, AJUSA, APEX and 2 other brands. FEL-PRO OS30544R carries the "Popular" badge.

This group includes FEL-PRO OS30544R, AJUSA 14057800 and APEX AOP131 and the remaining parts above.

This table covers the seals at the Oil Pump. 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

5 Oil Pump Seal parts for the 1991 Acura NSX come from 5 brands — TIMKEN, BCA, JAPANESE OE and 2 other brands. The "Popular" part is TIMKEN 711181.

Part numbers include TIMKEN 711181, BCA NS711181 and JAPANESE OE A6629, among others listed above.

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

2 Piston Ring parts for the 1991 Acura NSX come from HASTINGS MANUFACTURING.

This group includes HASTINGS MANUFACTURING 2C4667 and HASTINGS MANUFACTURING 2C4667S.

This table covers the Timing belts. Typical signs include squeal on cold start, cracked ribs, or glazing. Spin the tensioner and idlers by hand while the belt is off. Read more

2 Timing Belt parts for the 1991 Acura NSX come from 2 brands — GATES and S.A. GEAR.

This group includes GATES T231 and S.A. GEAR 9228.

This table covers the Timing Belt & component kits. Read more

One part is listed for the 1991 Acura NSX — DAYCO 95231K1.

This table covers the Timing Belt tensioners. 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

2 Timing Belt Tensioner parts are listed for the 1991 Acura NSX, from GMB and JAPANESE OE.

Listed part numbers: GMB 4359770 and JAPANESE OE PU246529RR9FYS02.

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

3 Timing Cover Repair Sleeve parts are listed for the 1991 Acura NSX, from SCHAEFFLER and SKF.

Listed part numbers: SCHAEFFLER SR3487, SCHAEFFLER SR3492 and SKF 99169.

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

3 Timing Cover Seal parts are listed for the 1991 Acura NSX, from ACDELCO, SCHAEFFLER and SKF.

Part numbers include ACDELCO 711181, SCHAEFFLER SS2705 and SKF 16496.

This table covers the Timing idlers. Typical signs include a chirp that follows engine speed, or an idler that feels rough or has play. Replace a noisy idler with the belt — the labor is already paid for. Read more

2 Timing Idler parts are listed for the 1991 Acura NSX, from INA and S.A. GEAR.

Part numbers include INA ZP95473 and S.A. GEAR 9473.

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 1991 Acura NSX, from APEX, AJUSA, FEL-PRO and 1 other brand. APEX AVC146S carries the "Popular" badge.

Part numbers include APEX AVC146S, AJUSA 56005300 and APEX AVC146, among others listed above.

This table covers the Valve Cover grommets. Read more

One part is listed for the 1991 Acura NSX — BECK/ARNLEY 0396399.

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

4 Valve Guide parts are listed for the 1991 Acura NSX, from QUALCAST and SBI.

This group includes QUALCAST 308157, QUALCAST 308158 and SBI 1408158 and the remaining parts above.

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

2 Valve Spring Retainer Keeper parts for the 1991 Acura NSX come from 2 brands — MELLING and SBI.

Listed part numbers: MELLING VL1060 and SBI 1211060.

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

5 Valve Stem Seal parts are listed for the 1991 Acura NSX, from SBI, FEL-PRO, APEX and 1 other brand. FEL-PRO SS702832 carries the "Popular" badge.

Part numbers include FEL-PRO SS702832, APEX AVS1028 and QUALCAST 3859255, among others listed above.

This table covers the Variable Valve Timing (VVT) Solenoid filters. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for. Read more

One part is listed for the 1991 Acura NSX — BECK/ARNLEY 0396577.