How Long Does a Pinion Seal Last?

Schedule Pinion Seal Replacement
Service Area

$0.00

Upfront, Transparent Price
Average rating from 31 customers who received a Pinion Seal Replacement.

Front-wheel drive cars have CV axles that transmit power from the transmission to the wheels. However, in a rear-wheel drive system, a drive shaft connects to the transmission and transmits power to the rear differential. The driveshaft connects to the differential via the pinion shaft – a short shaft that extends from the front of the differential.

Your vehicle’s differential is filled with fluid – like engine oil but thicker. It’s designed to protect the gears inside from friction and heat. Because the pinion shaft connects the interior of the differential to the driveshaft, a seal must be used around the end to prevent differential fluid from leaking out. This is called the pinion seal.

The pinion seal is in use at all times. When the vehicle is parked, the seal’s job is much simpler, but when you put it in gear and begin driving, things change. Pressure builds up inside the differential (to an extent – it’s not the same level of pressure as found inside your engine) and differential fluid begins moving. The seal must be able to stand up to pressure, fluid motion and heat to prevent leaks.

In terms of lifespan, there’s no set duration for a pinion seal. Really, they last as long as they last. There are many different factors that come into play here. All seals will degrade with time and exposure to differential fluid, but your driving habits will have a significant impact on lifespan. For instance, if you regularly haul heavy loads, you’ll put additional wear on the seal. If you have a lift kit, or regularly go off-road, you’ll also shorten the lifespan of the seal.

Because the pinion seal prevents differential fluid from leaking out and damaging the gears inside, it’s important to know the signs that indicate the seal is beginning to fail. These include:

  • Light leakage (signs of moisture) around the seal, where the pinion shaft enters the differential
  • Substantial leakage around the area where the pinion shaft enters the differential
  • Low differential fluid

If you are experiencing any of these problems or suspect that the seal is about to fail, a certified mechanic can help. One of our mobile mechanics can come to your home or office and inspect and replace the pinion seal if necessary.


Next Step

Schedule Pinion Seal Replacement

The most popular service booked by readers of this article is Pinion Seal Replacement. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Pinion Seal Replacement reviews

Excellent Rating


YourMechanic Pinion Seal Replacement Service

Average Rating

4.8/5

Number of Reviews

31

Rating Summary
28
2
0
0
1
28
2
0
0
1

Torrieanto

10 years of experience
483 reviews
Torrieanto
10 years of experience
Ford F-150 - Pinion Seal Replacement (Rear) - Palm Harbor, Florida
Trey was right on time. Trey was very knowledgeable and I can believe all claims in his profile credentials are true. He completed the job with no issues at all. Hope to retain his talent in the future.

Jim

19 years of experience
31 reviews
Jim
19 years of experience
Ford Explorer - Pinion Seal Replacement (Rear) - Saint Paul, Minnesota
Not only is Jim an extremely knowledgeable, experienced and skilled technician, he is also a man of great character. He was very honest about the prognosis of the repair we needed. Although it was a risk, we decided to take a chance and have Jim replace the worn pinion seal. He worked quickly and made the repair with 100% success - we are thrilled! We didn't know what to expect with this type of service, but we're glad we gave it a shot. It was a pleasure to meet Jim - he's a very professional and considerate person. We'll definitely recommend this service and this technician to friends.

Shaun

28 years of experience
38 reviews
Shaun
28 years of experience
Ford F-150 - Pinion Seal Replacement (Rear) - Daytona Beach, Florida
Shaun was extremely conscientious and took the time to explain the repair in detail. He was very professional and carefully addressed my vehicles concern. Shaun completed the repair in a timely fashion and took the time to insure that the work area was left in meticulous condition. I would definitely utilize his services in the future. Nice guy and great mechanic!

Sam

13 years of experience
123 reviews
Sam
13 years of experience
Nissan Armada - Pinion Seal Replacement (Front) - Edmond, Oklahoma
Top notch. Polite. Personable. Done earlier than estimated. Checked over entire vehicle. Would use again.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE