1991 BMW 850i Differentials

Keep Your 1991 BMW 850i in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1991 BMW 850i looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Seals, Differential Pinion Pilot Bearings, and Differential Oil. 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 1991 BMW 850i Differential at Advance Auto Parts is around $32.26, with a range that starts at $10.29 and goes up to $48.49. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Type HP Automatic Transmission Fluid , 1 Quart and Shaft Repair Sleeve start at just $10.29 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 Drive Shafts and Axles and Transfer Cases. At Advance Auto Parts, we’re here to help you keep your 1991 BMW 850i in peak condition, inside and out.

Essential 1991 BMW 850i Differentials

National – Shaft Repair Sleeve (Part No.99215)

Shaft Repair Sleeve

from

$48.49
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:
  • 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
See More

National – Shaft Repair Sleeve (Part No.99157)

Shaft Repair Sleeve

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:
  • 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
See More

Idemitsu – Type HP Automatic Transmission Fluid , 1 Quart (Part No.10107-042F)

Type HP Automatic Transmission Fluid , 1 Quart

from

$10.29
Formulated to meet the specific requirements of Subaru vehicles equipped with conventional (non-CVT) transmissions up to model year 2005. Recommended for service-fill in all Subaru automatic transmissions where SUBARU ATF HP is specified. Fuel economy demands and more sophisticated electronic controls have made automatic transmissions not only more complex, but also unique to each vehicle manufacturer. Long gone are the days of having just a couple choices of automatic transmission fluid type. Idemitsu is the factory fill Automatic Transmission Fluid (ATF) supplier to most Asian imports. Idemitsu application-specific ATF products match the exact friction materials and performance requirements of each different vehicle model for which they are made.

Product Features:
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
  • Advanced anti-wear technology provides maximum protection to gears and bearings
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
  • Advanced anti-wear technology provides maximum protection to gears and bearings
See More

Most Popular Differential Seal for 1991 BMW 850is

Enhance your 1991 BMW 850i with this popular Differential Seal we have in stock, for $48.49.

National – Shaft Repair Sleeve (Part No.99215)

Shaft Repair Sleeve

from

$48.49
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:
  • 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
See More

Best-Selling 1991 BMW 850i Differential Pinion Pilot Bearing

Upgrade your 850i with our best-selling Differential Pinion Pilot Bearing with a 2 Starts rating across 1 review.

National – Shaft Repair Sleeve (Part No.99157)

Shaft Repair Sleeve

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:
  • 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
See More

Top-Quality Differential Oil for 1991 BMW 850is

Choose a high-quality OEM or aftermarket Differential Oil for BMW 850is and enjoy top-notch performance from $10.29.

Idemitsu – Type HP Automatic Transmission Fluid , 1 Quart (Part No.10107-042F)

Type HP Automatic Transmission Fluid , 1 Quart

from

$10.29
Formulated to meet the specific requirements of Subaru vehicles equipped with conventional (non-CVT) transmissions up to model year 2005. Recommended for service-fill in all Subaru automatic transmissions where SUBARU ATF HP is specified. Fuel economy demands and more sophisticated electronic controls have made automatic transmissions not only more complex, but also unique to each vehicle manufacturer. Long gone are the days of having just a couple choices of automatic transmission fluid type. Idemitsu is the factory fill Automatic Transmission Fluid (ATF) supplier to most Asian imports. Idemitsu application-specific ATF products match the exact friction materials and performance requirements of each different vehicle model for which they are made.

Product Features:
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
  • Advanced anti-wear technology provides maximum protection to gears and bearings
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
  • Advanced anti-wear technology provides maximum protection to gears and bearings
See More

FAQs for 1991 BMW 850i Differentials

What are the best-selling Differentials for 1991 BMW 850is?

Out of 3 Differentials that fit 1991 BMW 850is, the following parts are the top sellers:

What’s the price range for 1991 BMW 850i Differentials?

The prices of Differentials for the 1991 BMW 850i range from $10.29 up to $48.49 for the most premium parts.

What is the average price of a Differential for a 1991 BMW 850i?

The average price for Differentials for the 1991 BMW 850i is $32.26. 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.

What are the cheapest Differentials for my 1991 BMW 850i?

The cheapest 1991 BMW 850i Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1991 BMW models?

Yes. We stock Differentials for 12 other popular 1991 BMW models. Some of the most popular are 1991 325i Differentials, 1991 M3 Differentials, 1991 535i Differentials, 1991 525i Differentials, and 1991 M5 Differentials.

What are the top-rated Differentials that fit the 1991 BMW 850i?

The one 1991 BMW 850i Differential we have in stock is the Type HP Automatic Transmission Fluid , 1 Quart. It costs $10.29.

What types of Differentials do you sell for my 1991 BMW 850i?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1991 BMW 850i:

Can I get help with 1991 BMW 850i Differential orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about BMW Differentials and more.

What is your return policy for BMW 850i Differentials?

Advance Auto Parts keeps returns simple. For new BMW 850i Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.