1977 Fiat 131 Differentials
Keep Your 1977 Fiat 131 in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1977 Fiat 131 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Pinion Pilot Bearings and Pinion Shaft Seals. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 1977 Fiat 131 Differential at Advance Auto Parts is around $39.99, with a range that starts at $27.99 and goes up to $53.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Shaft Repair Sleeve and Repair Sleeve start at just $27.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Differential, don’t forget to check out other key components like Transfer Cases and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1977 Fiat 131 in peak condition, inside and out.
Find Your Specific 1977 Fiat 131 Differentials
Looking for the perfect Differential for your 1977 Fiat 131? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your Fiat 131. Whether you’re driving a 1977 model or another popular model year like
1975,
1976, and
1978, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.
Essential 1977 Fiat 131 Differentials
National – Shaft Repair Sleeve (Part No.99157)
from
$37.99
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
- Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
FAG US – Repair Sleeve (Part No.SR3506)
from
$53.99
The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.
Product Features:
See More
Product Features:
- High-precision and High-quality components used in all KITs
- Coverage of classic and new high-tech solutions for the best system coverage
National – Shaft Repair Sleeve (Part No.99114)
from
$27.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
Popular 1977 Fiat 131 Differentials Categories
Most Popular Differential Pinion Pilot Bearings for 1977 Fiat 131s
Enhance your 1977 Fiat 131 with one of the 2 Differential Pinion Pilot Bearings we have in stock, starting at just $37.99.
National – Shaft Repair Sleeve (Part No.99157)
from
$37.99
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
- Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
FAG US – Repair Sleeve (Part No.SR3506)
from
$53.99
The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.
Product Features:
See More
Product Features:
- High-precision and High-quality components used in all KITs
- Coverage of classic and new high-tech solutions for the best system coverage
Best-Selling 1977 Fiat 131 Pinion Shaft Seal
Upgrade your 131 with our best-selling Pinion Shaft Seal.
National – Shaft Repair Sleeve (Part No.99114)
from
$27.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
See More
Product Features:
- Designed to repair damaged, grooved or worn shafts
- Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
- Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
- Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
- Easy to install with removable flange and installation tool
FAQs for 1977 Fiat 131 Differentials
What are the best-selling Differentials for 1977 Fiat 131s?
Out of 3 Differentials that fit 1977 Fiat 131s, the following parts are the top sellers:
- Shaft Repair Sleeve (18445079) – $27.99
- Repair Sleeve (50205948) – $53.99
What’s the price range for 1977 Fiat 131 Differentials?
The prices of Differentials for the 1977 Fiat 131 range from $27.99 up to $53.99 for the most premium parts.
What is the average price of a Differential for a 1977 Fiat 131?
The average price for Differentials for the 1977 Fiat 131 is $39.99. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Differentials for other Fiat 131 model years?
What are the cheapest Differentials for my 1977 Fiat 131?
The cheapest 1977 Fiat 131 Differentials we carry are:
- Shaft Repair Sleeve (18445079) – $27.99
- Shaft Repair Sleeve (18445098) – $37.99
- Repair Sleeve (50205948) – $53.99
Does Advance Auto Parts sell Differentials for any other 1977 Fiat models?
Yes. We stock Differentials for 2 other popular 1977 Fiat models. Some of the most popular are 1977 124 Differentials, 1977 X-1/9 Differentials, and 1977 128 Differentials.
What are the top-rated Differentials that fit the 1977 Fiat 131?
The one 1977 Fiat 131 Differential we have in stock is the Shaft Repair Sleeve. It costs $27.99.
What types of Differentials do you sell for my 1977 Fiat 131?
As of 11/2/25, these are some of the most in-demand types of Differentials for a 1977 Fiat 131:
Can I get help with 1977 Fiat 131 Differential orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Fiat Differentials and more.
What is your return policy for Fiat 131 Differentials?
Advance Auto Parts keeps returns simple. For new Fiat 131 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.