How to remove and install Differential Seal on Buick Regal?

To remove or install the pinion companion flange, align the driveshaft and the pinion companion flange before assembly in order to avoid mishits. Remove the driveshaft from the pinion companion flange by slackening the nuts securing it, hoist the propeller shaft on the body tunnel and fix it to the exhaust pipe by joining the wires. If the above joint bearing caps do not come with a retainer strap then the same should be fastened with the help of a tape. Subsequently, note the alignment of position of the companion flange, pinion shaft and nut such that when assembling it, it will achieve the correct pinion bearing preload. To remove the companion flange nut and washer, engage Tool J-8614-10 or an equivalent tool to hold the pinion companion flange. Put an appropriate tray to collect the fluid that may drip out of the rear axle before heading out to remove the pinion companion flange with the tool. Expel the seal utilising a blunt chisel and examine the pinion companion flange for nicks or damages, in which case have the former substituted. Inspect the pinion seal bore in the carrier for burr and professionally remove them. For refitting use Tool J-23911 or equivalent to refit a new seal, smear the pinion flange and sealing lip of the new seal with Special Seal Lubricant and then refit the pinion companion flange and nut and tighten the nut slightly beyond the alignment marks.

Genuine Buick Regal Differential Seal

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6 Differential Seals found

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Buick Regal Seal Kit, Differential Clutch
Part Number: 13334079
$34.40 MSRP: $59.33
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Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2017 Buick Regal | CX 4 DOOR SEDAN, CXL 4 DOOR SEDAN, CXS 4 DOOR SEDAN | 4 Cyl 2.0L
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Buick Regal Differential Drive Pinion Gear Seal
Part Number: 13296280
$16.92 MSRP: $31.92
You Save: $15.00 (47%)
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Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Oil Seal, Pinion Seal, Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2017 Buick Regal | CX 4 DOOR SEDAN, CXL 4 DOOR SEDAN, CXS 4 DOOR SEDAN | 4 Cyl 2.0L
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Buick Regal Differential Drive Pinion Gear Seal
Part Number: 23269748
$8.20 MSRP: $14.91
You Save: $6.71 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal, Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 Buick Regal | 1SC 4 DOOR HATCHBACK, 1SL 4 DOOR HATCHBACK, 1SL 4 DOOR STATION WAGON, 1SX 4 DOOR HATCHBACK, BASE 4 DOOR STATION WAGON | 4 Cyl 2.0L, 6 Cyl 3.6L
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Buick Regal Differential Drive Pinion Gear Seal
Part Number: 26026792
$19.02 MSRP: $34.10
You Save: $15.08 (45%)
Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1987 Buick Regal | 2 DOOR, 4 DOOR, REGAL, STATION WAGON | 6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel
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Buick Regal Differential Drive Pinion Gear Seal
Part Number: 26033578
Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1987 Buick Regal | 2 DOOR, 4 DOOR, REGAL, STATION WAGON | 6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel
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Buick Regal Seal,Propeller Shaft Pinion Flange Oil
Part Number: 404294
Product Specifications
- Other Name: Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1987 Buick Regal | 2 DOOR, 4 DOOR, REGAL, STATION WAGON | 6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel

Buick Regal Differential Seal

The purpose of the Buick Regal Differential Seal is to contain the gear oil while keeping contaminants out. This allows for smooth delivery of torque at all times. Differential Seal is installed at the axle shaft and housing interface. They form a synthetic rubber press-fit ring that retains internal pressure even when heat and vibration increase, preventing leakages around the gears. Many Regal models feature an open differential which splits torque evenly between the wheels. Later trims started using a limited slip unit which relies on clutches and spring packs to send extra power to whichever tire has more grip. In either case, the Differential Seal ensures that the fluid level stays stable to prevent dry starts and scratching of the gears. Over the years, Buick selections have included a simple nitrile rubber, tougher fluorocarbon blends, and others that permit the Differential Seal to remain resistant to swelling from hot 75W-90 gear oil and maintain flexibility during winter cold. When a seal eventually hardens or cracks, it will allow lubricant to escape, dirt to enter, and drivers to hear clunks from the rear end. Thus, this is a sure sign the Differential Seal should be swapped quickly. It will help preserve durability in the Buick Regal drivetrains just like the rest of it has.

Each OEM Buick Regal Differential Seal we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Buick Regal Differential Seal Parts Questions & Experts Answers

Seal,Propeller Shaft Pinion Flange Oil
404294
Q: How to remove and install Differential Seal on Buick Regal?
A:
To remove or install the pinion companion flange, align the driveshaft and the pinion companion flange before assembly in order to avoid mishits. Remove the driveshaft from the pinion companion flange by slackening the nuts securing it, hoist the propeller shaft on the body tunnel and fix it to the exhaust pipe by joining the wires. If the above joint bearing caps do not come with a retainer strap then the same should be fastened with the help of a tape. Subsequently, note the alignment of position of the companion flange, pinion shaft and nut such that when assembling it, it will achieve the correct pinion bearing preload. To remove the companion flange nut and washer, engage Tool J-8614-10 or an equivalent tool to hold the pinion companion flange. Put an appropriate tray to collect the fluid that may drip out of the rear axle before heading out to remove the pinion companion flange with the tool. Expel the seal utilising a blunt chisel and examine the pinion companion flange for nicks or damages, in which case have the former substituted. Inspect the pinion seal bore in the carrier for burr and professionally remove them. For refitting use Tool J-23911 or equivalent to refit a new seal, smear the pinion flange and sealing lip of the new seal with Special Seal Lubricant and then refit the pinion companion flange and nut and tighten the nut slightly beyond the alignment marks.