How to replace the front crankshaft seal in V6 engine on Oldsmobile Cutlass?

Remove the timing chain cover, then use a punch to drive out the old oil seal and shedder, working from the front toward the rear of the timing chain cover. Apply the new oil seal packing around the opening with the ends positioned at the top, and drive in the new shedder using a punch, ensuring to stake it in place in at least three locations. Rotate the handle of a hammer or a similar tool to size the packing until the balancer hub can be inserted through the opening, and finally, re-install the timing chain cover.

Genuine Oldsmobile Crankshaft Seal

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30 Crankshaft Seals found

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Oldsmobile Seal Assembly, Crankshaft Rear Oil
Part Number: 12591866
$22.22 MSRP: $38.33
You Save: $16.11 (43%)
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Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Rear Main Seal
- Position: Rear
- Replaces: 90298408, 90325572, 90280462, 90354378
Fits the following Oldsmobile Models:
- Alero | 2002-2004 | GLS 2 DOOR, GLS SEDAN 4 DOOR, LEVEL I 2 DOOR, LEVEL I 4 DOOR, LEVEL II COUPE 2 DOOR, LEVEL II SEDAN 4 DOOR | 4 Cyl 2.2L
- Firenza | 1987-1988 | 2 DOOR, 2 DOOR NOTCHBACK, 2 DOOR PLAIN BACK HATCHBACK, 4 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 2 DOOR PLAIN BACK, BROUGHAM 4 DOOR, STATION WAGON | 4 Cyl 2.0L
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Oldsmobile Seal, Crankshaft Front Oil
Part Number: 12584041
$8.90 MSRP: $16.80
You Save: $7.90 (48%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: SEAL, Engine Front Cover & Crankshaft Seal
- Position: Front
- Replaces: 12580989, 55564509, 12609467, 90571925
Fits the following Oldsmobile Models:
- Alero | 2002-2004 | GLS 2 DOOR, GLS SEDAN 4 DOOR, LEVEL I 2 DOOR, LEVEL I 4 DOOR, LEVEL II COUPE 2 DOOR, LEVEL II SEDAN 4 DOOR | 4 Cyl 2.2L
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Oldsmobile Seal Kit,Crankshaft Front Oil
Part Number: 89017622
$16.70 MSRP: $27.62
You Save: $10.92 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: SEAL KIT, Engine Rear Main Bearing
- Position: Front
Fits the following Oldsmobile Models:
- Bravada | 2004 | 4 DOOR | 6 Cyl 4.2L
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Oldsmobile Seal,Crankshaft Front Oil
Part Number: 10128316
$20.97 MSRP: $39.56
You Save: $18.59 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Front Cover & Crankshaft Seal
- Position: Front
Fits the following Oldsmobile Models:
- Bravada | 1996-2001 | BRAVADA | 6 Cyl 4.3L
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Oldsmobile Seal,Crankshaft Front Oil
Part Number: 14090906
$21.01 MSRP: $39.63
You Save: $18.62 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Front Cover & Crankshaft Seal
- Position: Front
- Replaces: 12577710
Fits the following Oldsmobile Models:
- Achieva | 1994-1998 | 2 DOOR, 4 DOOR, S 2 DOOR, S 4 DOOR, SC 2 DOOR, SEDAN LEVEL I, SEDAN LEVEL II, SL 4 DOOR | 6 Cyl 3.1L
- Alero | 1999-2004 | GL COUPE 2 DOOR, GL SEDAN 4 DOOR, LEVEL II COUPE 2 DOOR, LEVEL II SEDAN 4 DOOR | 6 Cyl 3.4L
- Bravada | 1991-1994 | BRAVADA | 6 Cyl 4.3L
- Custom Cruiser | 1991-1992 | STATION WAGON | 8 Cyl 5.0L, 8 Cyl 5.7L
- Cutlass | 1988-1999 | 2 DOOR, 4 DOOR, BROUGHAM 4 DOOR, BROUGHAM SL 2 DOOR, BROUGHAM STATION WAGON, INTERNAL 2 DOOR, INTERNAL 4 DOOR, S 2 DOOR, S 4 DOOR, S STATION WAGON, SC 2 DOOR, SEDAN LEVEL I, SEDAN LEVEL II, SL 2 DOOR, SL 4 DOOR, SL STATION WAGON, STATION WAGON | 4 Cyl 2.2L, 4 Cyl 2.5L, 6 Cyl 2.8L, 6 Cyl 3.1L, 6 Cyl 3.4L
- Firenza | 1987-1988 | 2 DOOR, 2 DOOR NOTCHBACK, 2 DOOR PLAIN BACK HATCHBACK, 4 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 2 DOOR PLAIN BACK, BROUGHAM 4 DOOR, STATION WAGON | 4 Cyl 2.0L
- Silhouette | 1996-2004, 1990-1994 | 2/SLIDING DOORS, AWD EXT 2/SLIDING DOORS, EXT, EXT 2/SLIDING DOORS, MPV, SILHOUETTE | 6 Cyl 3.1L, 6 Cyl 3.4L
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Oldsmobile Seal,Crankshaft Rear Oil
Part Number: 12582320
$20.73 MSRP: $34.31
You Save: $13.58 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Crankshaft Seal, Rear Main Seal, Seal
- Position: Rear
- Replaces: 25534760
Fits the following Oldsmobile Models:
- 88 | 1992-1999 | 4 DOOR, 50TH ANNIVERSARY 4 DOOR, LSS 4 DOOR, ROYALE 4 DOOR, ROYALE LS, ROYALE LS 4 DOOR, ROYALE LSS 4 DOOR | 6 Cyl 3.8L
- 98 | 1991-1996 | REGENCY 4 DOOR, REGENCY ELITE, TOURING SEDAN | 6 Cyl 3.8L
- Achieva | 1992-1993 | S 2 DOOR, S 4 DOOR, SL 2 DOOR, SL 4 DOOR | 6 Cyl 3.3L
- Calais | 1991 | 2 DOOR, 4 DOOR, INTERNATIONAL 2 DOOR, INTERNATIONAL 4 DOOR, S 2 DOOR, S 4 DOOR, SL 2 DOOR, SL 4 DOOR | 6 Cyl 3.3L
- Cutlass | 1991-1993 | 2 DOOR, 4 DOOR, S 2 DOOR, S 4 DOOR, S STATION WAGON, SL 2 DOOR, SL 4 DOOR, SL STATION WAGON, STATION WAGON | 6 Cyl 3.3L
- Delta 88 | 1991 | ROYALE 2 DOOR, ROYALE 4 DOOR, ROYALE BROUGHAM 2 DOOR, ROYALE BROUGHAM 4 DOOR | 6 Cyl 3.8L
- Intrigue | 1998-1999 | 4 DOOR, GL 4 DOOR, GLS 4 DOOR, GX 4 DOOR | 6 Cyl 3.8L
- Silhouette | 1992-1995 | MPV | 6 Cyl 3.8L
- Toronado | 1991-1992 | TORONADO, TROFEO | 6 Cyl 3.8L
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Oldsmobile Seal Assembly, Crankshaft Rear Oil
Part Number: 12592195
$44.32 MSRP: $75.13
You Save: $30.81 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SEAL KIT, Engine Rear Main Bearing
- Position: Rear
- Replaces: 14085829
Fits the following Oldsmobile Models:
- Alero | 1999-2003 | GL COUPE 2 DOOR, GL SEDAN 4 DOOR, LEVEL II COUPE 2 DOOR, LEVEL II SEDAN 4 DOOR | 6 Cyl 3.4L
- Cutlass | 1986-1990 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 4 DOOR, BROUGHAM SL 2 DOOR, BROUGHAM STATION WAGON, LS 2 DOOR NOTCHBACK, LS 4 DOOR, LS STATION WAGON, S 2 DOOR, SL 2 DOOR, SL 4 DOOR, SL STATION WAGON, STATION WAGON | 6 Cyl 2.8L, 6 Cyl 3.1L
- Firenza | 1985-1988 | 2 DOOR, 2 DOOR NOTCHBACK, 2 DOOR PLAIN BACK HATCHBACK, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 2 DOOR PLAIN BACK, BROUGHAM 4 DOOR, BROUGHAM STATION WAGON, STATION WAGON | 4 Cyl 2.0L, 6 Cyl 2.8L
- Silhouette | 1996-2004 | 2/SLIDING DOORS, AWD EXT 2/SLIDING DOORS, EXT, EXT 2/SLIDING DOORS, MPV, SILHOUETTE | 6 Cyl 3.4L
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Oldsmobile Seal,Crankshaft Rear Oil
Part Number: 10088158
$33.43 MSRP: $55.35
You Save: $21.92 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing
- Position: Rear
Fits the following Oldsmobile Models:
- Bravada | 1991-1994 | BRAVADA | 6 Cyl 4.3L
- Custom Cruiser | 1991-1992 | STATION WAGON | 8 Cyl 5.0L, 8 Cyl 5.7L
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Oldsmobile Seal,Crankshaft Front Oil
Part Number: 10228655
$20.74 MSRP: $34.33
You Save: $13.59 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Front Cover & Crankshaft Seal
- Position: Front
Fits the following Oldsmobile Models:
- Cutlass | 1996 | SL 4 DOOR, SL STATION WAGON | 4 Cyl 2.2L
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Oldsmobile Seal,Crankshaft Rear Main Bearing Cap
Part Number: 12568025
$51.96 MSRP: $88.85
You Save: $36.89 (42%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Rear Main Seal
- Position: Rear
- Replaces: 12556355, 12556107
Fits the following Oldsmobile Models:
- Aurora | 2001-2003, 1996-1999 | 4 DOOR, AURORA | 6 Cyl 3.5L, 8 Cyl 4.0L
- Intrigue | 1999-2002 | GL 4 DOOR, GLS 4 DOOR, GX 4 DOOR | 6 Cyl 3.5L
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Oldsmobile Seal Assembly, Crankshaft Front Oil
Part Number: 12582313
$12.17 MSRP: $20.14
You Save: $7.97 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Front Cover & Crankshaft Seal
- Position: Front
- Replaces: 24504098
Fits the following Oldsmobile Models:
- 88 | 1992-1999 | 4 DOOR, 50TH ANNIVERSARY 4 DOOR, LSS 4 DOOR, ROYALE 4 DOOR, ROYALE LS, ROYALE LS 4 DOOR, ROYALE LSS 4 DOOR | 6 Cyl 3.8L
- 98 | 1988-1996, 1986 | REGENCY 4 DOOR, REGENCY BROUGH 2 DOOR, REGENCY BROUGH 4 DOOR, REGENCY BROUGHAM, REGENCY ELITE, TOURING SEDAN | 6 Cyl 3.8L
- Achieva | 1992-1993 | S 2 DOOR, S 4 DOOR, SL 2 DOOR, SL 4 DOOR | 6 Cyl 3.3L
- Calais | 1985-1991 | 2 DOOR, 4 DOOR, INTERNATIONAL 2 DOOR, INTERNATIONAL 4 DOOR, S 2 DOOR, S 4 DOOR, SL 2 DOOR, SL 4 DOOR, SUPREME 2 DOOR, SUPREME 4 DOOR | 6 Cyl 3.0L, 6 Cyl 3.3L
- Cutlass | 1986-1993 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 4 DOOR, BROUGHAM SL 2 DOOR, BROUGHAM STATION WAGON, LS 2 DOOR NOTCHBACK, LS 4 DOOR, LS STATION WAGON, S 2 DOOR, S 4 DOOR, S STATION WAGON, SL 2 DOOR, SL 4 DOOR, SL STATION WAGON, STATION WAGON | 6 Cyl 3.3L
- Delta 88 | 1988-1991, 1986 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, ROYALE 2 DOOR, ROYALE 4 DOOR, ROYALE BROUGHAM 2 DOOR, ROYALE BROUGHAM 4 DOOR | 6 Cyl 3.0L, 6 Cyl 3.8L
- Intrigue | 1998-1999 | 4 DOOR, GL 4 DOOR, GLS 4 DOOR, GX 4 DOOR | 6 Cyl 3.8L
- Silhouette | 1992-1995 | MPV | 6 Cyl 3.8L
- Toronado | 1988-1992, 1986 | BROUGHAM, TORONADO, TROFEO | 6 Cyl 3.8L
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Oldsmobile Seal Kit,Crankshaft Front Oil
Part Number: 89017621
$21.51 MSRP: $33.83
You Save: $12.32 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL KIT, Engine Rear Main Bearing; Front Crank Seal, Front Seal
- Position: Front
Fits the following Oldsmobile Models:
- Bravada | 2002-2004 | 4 DOOR | 6 Cyl 4.2L
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Oldsmobile Seal, Crankshaft Rear Main Bearing Cap *Orange
Part Number: 24500058
$13.05
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Rear Main Seal
- Position: Rear
Fits the following Oldsmobile Models:
- 88 | 1992-1995 | ROYALE 4 DOOR, ROYALE LS, ROYALE LS 4 DOOR, ROYALE LSS 4 DOOR | 6 Cyl 3.8L
- 98 | 1988-1995, 1985, 1982-1983 | REGENCY 2 DOOR, REGENCY 4 DOOR, REGENCY BROUGH 2 DOOR, REGENCY BROUGH 4 DOOR, REGENCY BROUGHAM, REGENCY ELITE, TOURING SEDAN | 6 Cyl 3.0L, 6 Cyl 3.8L, 6 Cyl 4.1L
- Achieva | 1992-1993 | S 2 DOOR, S 4 DOOR, SL 2 DOOR, SL 4 DOOR | 6 Cyl 3.3L
- Calais | 1985-1991 | 2 DOOR, 4 DOOR, INTERNATIONAL 2 DOOR, INTERNATIONAL 4 DOOR, S 2 DOOR, S 4 DOOR, SL 2 DOOR, SL 4 DOOR, SUPREME 2 DOOR, SUPREME 4 DOOR | 6 Cyl 3.0L, 6 Cyl 3.3L
- Custom Cruiser | 1982-1985 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, BROUGHAM LS 4 DOOR, RWD, STATION WAGON
- Cutlass | 1989-1993, 1982-1987 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, CUTLASS CALAIS, CUTLASS CRUISER, S 2 DOOR, S 4 DOOR, S STATION WAGON, SL 2 DOOR, SL 4 DOOR, SL STATION WAGON, STATION WAGON | 6 Cyl 3.3L, 6 Cyl 3.8L
- Delta 88 | 1988-1991, 1982-1986 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, BROUGHAM LS 4 DOOR, ROYALE 2 DOOR, ROYALE 4 DOOR, ROYALE BROUGHAM 2 DOOR, ROYALE BROUGHAM 4 DOOR, RWD, STATION WAGON | 6 Cyl 3.0L, 6 Cyl 3.8L
- Silhouette | 1992-1995 | MPV | 6 Cyl 3.8L
- Toronado | 1988-1992, 1982-1984 | BROUGHAM, TORONADO, TROFEO | 6 Cyl 3.8L, 6 Cyl 4.1L
View More
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Oldsmobile Seal, Crankshaft Rear Main Bearing Cap
Part Number: 10191767
$13.05
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Cap, Rear Main Seal
- Position: Rear
Fits the following Oldsmobile Models:
- Achieva | 1994 | S 2 DOOR, S 4 DOOR, SC 2 DOOR, SL 4 DOOR | 6 Cyl 3.1L
- Bravada | 1992-1993 | BRAVADA
- Cutlass | 1986-1997 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 4 DOOR, BROUGHAM SL 2 DOOR, BROUGHAM STATION WAGON, INTERNAL 2 DOOR, INTERNAL 4 DOOR, LS 2 DOOR NOTCHBACK, LS 4 DOOR, LS STATION WAGON, S 2 DOOR, S 4 DOOR, S STATION WAGON, SL 2 DOOR, SL 4 DOOR, SL STATION WAGON, STATION WAGON | 6 Cyl 2.8L, 6 Cyl 3.1L, 6 Cyl 3.4L
- Firenza | 1985-1987 | 2 DOOR, 2 DOOR NOTCHBACK, 2 DOOR PLAIN BACK HATCHBACK, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 2 DOOR PLAIN BACK, BROUGHAM 4 DOOR, BROUGHAM STATION WAGON, STATION WAGON | 6 Cyl 2.8L
- Silhouette | 1990-1994 | MPV | 6 Cyl 3.1L
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Oldsmobile Seal,Crankshaft Rear Oil
Part Number: 12554314
$35.13 MSRP: $60.08
You Save: $24.95 (42%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Rear Main Seal
- Position: Rear
Fits the following Oldsmobile Models:
- Bravada | 1996-1998 | BRAVADA | 6 Cyl 4.3L
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Oldsmobile Seal Assembly, Crankshaft Front Oil
Part Number: 12556109
$14.42 MSRP: $27.19
You Save: $12.77 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Front Cover & Crankshaft Seal
- Position: Front
Fits the following Oldsmobile Models:
- Aurora | 2001-2002, 1998-1999 | 4 DOOR, AURORA | 6 Cyl 3.5L, 8 Cyl 4.0L
- Intrigue | 1999-2002 | GL 4 DOOR, GLS 4 DOOR, GX 4 DOOR | 6 Cyl 3.5L
View related parts
Oldsmobile Seal Kit,Crankshaft Rear Oil
Part Number: 89018163
$26.79 MSRP: $44.34
You Save: $17.55 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL KIT, Engine Rear Main Bearing; Rear Main Seal
- Position: Rear
- Replaces: 12555769
Fits the following Oldsmobile Models:
- Bravada | 1998-2001 | BRAVADA | 6 Cyl 4.3L
View related parts
Oldsmobile Seal,Crankshaft Front Oil
Part Number: 90183572
$26.31 MSRP: $41.40
You Save: $15.09 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: RING, Engine Oil Pump Body; Seal, Seal Ring, Shaft Seal, Timing Cover Seal
- Position: Front
- Replaces: 90136297, 90156855
Fits the following Oldsmobile Models:
- Firenza | 1982-1988 | 2 DOOR, 2 DOOR NOTCHBACK, 2 DOOR PLAIN BACK HATCHBACK, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 2 DOOR NOTCHBACK, BROUGHAM 2 DOOR PLAIN BACK, BROUGHAM 4 DOOR, BROUGHAM STATION WAGON, STATION WAGON | 4 Cyl 1.8L, 4 Cyl 2.0L
View related parts
Oldsmobile Seal,Crankshaft Rear Oil
Part Number: 22545259
$13.34 MSRP: $21.99
You Save: $8.65 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Rear Main Seal
- Position: Rear
Fits the following Oldsmobile Models:
- Achieva | 1992-1998 | 2 DOOR, 4 DOOR, S 2 DOOR, S 4 DOOR, SC 2 DOOR, SEDAN LEVEL I, SEDAN LEVEL II, SL 2 DOOR, SL 4 DOOR | 4 Cyl 2.3L, 4 Cyl 2.4L
- Alero | 1999-2001 | 2 DOOR, 4 DOOR, GL COUPE 2 DOOR, GL SEDAN 4 DOOR, GX 2 DOOR, GX SEDAN 4 DOOR | 4 Cyl 2.4L
- Silhouette | 1993-1994 | MPV
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View related parts
Oldsmobile Seal Assembly, Crankshaft Oil
Part Number: 552711
Product Specifications
- Other Name: SEAL, Engine Front Cover & Crankshaft Seal
Fits the following Oldsmobile Models:
- 98 | 1982-1985 | REGENCY 2 DOOR, REGENCY 4 DOOR, REGENCY BROUGH 2 DOOR, REGENCY BROUGH 4 DOOR, REGENCY BROUGHAM | 6 Cyl 4.3L Diesel, 8 Cyl 5.7L Diesel
- Custom Cruiser | 1982-1990 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, BROUGHAM LS 4 DOOR, RWD, STATION WAGON | 8 Cyl 5.0L, 8 Cyl 5.7L Diesel
- Cutlass | 1982-1987 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, CUTLASS CALAIS, CUTLASS CRUISER, LS 2 DOOR, LS 4 DOOR, LS STATION WAGON | 6 Cyl 4.3L Diesel, 8 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel
- Delta 88 | 1982-1985 | 2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, BROUGHAM 4 DOOR, BROUGHAM LS 4 DOOR, RWD, STATION WAGON | 8 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel
- Toronado | 1982-1985 | BROUGHAM | 8 Cyl 5.0L, 8 Cyl 5.7L Diesel
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Oldsmobile Crankshaft Seal

Looking to acquire brand new parts? Consider exploring our extensive inventory of genuine Oldsmobile Crankshaft Seals. Our offering of OEM Oldsmobile Crankshaft Seals not only comes with competitive prices but also includes a manufacturer's warranty. For added convenience, we provide a hassle-free return policy and rapid delivery service. Shop with confidence on our platform.

Oldsmobile Crankshaft Seal Parts Questions & Experts Answers

Seal,Crankshaft Front Oil
14090906
Q: How to replace the front crankshaft seal in V6 engine on Oldsmobile Cutlass?
A: Remove the timing chain cover, then use a punch to drive out the old oil seal and shedder, working from the front toward the rear of the timing chain cover. Apply the new oil seal packing around the opening with the ends positioned at the top, and drive in the new shedder using a punch, ensuring to stake it in place in at least three locations. Rotate the handle of a hammer or a similar tool to size the packing until the balancer hub can be inserted through the opening, and finally, re-install the timing chain cover.