1999 BMW 323i Differentials
Keep Your 1999 BMW 323i in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1999 BMW 323i looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Front Differential Pinion Bearings, Differential Bearings, and Differential 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.
Top-Rated Differentials from Trusted Brands
Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like National, Royal Purple, and Mobil Oil. For example, National Differentials start at just $22.99 with an average 4.3 star rating. Royal Purple and Mobil Oil offer similar pricing and quality, backed by strong customer feedback. With over 584 reviews and a solid 5 star average, you can shop with confidence knowing other BMW 323i owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1999 BMW 323i Differential at Advance Auto Parts is around $37.78, with a range that starts at $4.79 and goes up to $293.99. With 15 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart, Tapered Roller Bearing Cone, and Tapered Roller Bearing Cone start at just $11.99 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 Drive Shafts and Axles and Transfer Cases. At Advance Auto Parts, we’re here to help you keep your 1999 BMW 323i in peak condition, inside and out.
Find Your Specific 1999 BMW 323i Differentials
Looking for the perfect Differential for your 1999 BMW 323i? 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 BMW 323i. Whether you’re driving a 1999 model or another popular model year like
2000, 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 1999 BMW 323i Differentials
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:
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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
Dorman – Differential Cover Assembly (OE Fix) (Part No.697-550)
from
$293.99
The original differential cover on certain BMW 3 Series models may break at its mounting position, causing the rear axle to shift in place. This Dorman OE FIX replacement features additional bracing and thicker ribs to prevent future failures.
Product Features:
See More
Product Features:
- Upgraded replacement – this differential cover features additional bracing and thicker materials for a more reliable repair
- Application specific – made to match the fit and function of the original cover on certain BMW 3 Series model years
- Durable materials – made of die cast aluminum
- Quality engineering – designed in the United States and backed by decades of automotive aftermarket experience
National – Tapered Roller Bearing Cone (Part No.LM503349A)
from
$22.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
FAG US – Cup (Part No.LM501310)
from
$9.99
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.
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 – Bearing Race (Part No.HM89410)
from
$10.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Driveworks – Differential Seal (Part No.S-473823)
Driveworks – Camshaft Seal (Part No.S-99139)
Mobil 1 – 75W-90 Full Synthetic Gear Lubricant, Extends Gear Life, 1 Quart (Part No.26101)
from
$19.99
Mobil 1 Synthetic Gear Lubricant LS 75W-90 is a supreme, multi-purpose automotive gear lubricant that helps to provide exceptional thermal stability and resistance to high temperature oxidation, extending gear life due to minimal deposits. Helps to deliver outstanding protection against low speed/high torque wear with the capability to handle severe driving conditions while delivering smooth efficient performance. Mobil 1 Synthetic Gear Lubricant LS provides exceptional shear stability, corrosion protection, and enhanced frictional properties. Compared to conventional hypoid gear lubricants, Mobil 1 LS 75W-90 performs exceptionally over a wide range of temperatures to reduce wear at start up. Mobil 1 gear lube helps to minimize leakage and reduce contamination while providing good resistance to foaming to maintain film strength for reliable lubrication. Meets or exceeds the requirements of the following industry specifications: API GL-5.
Product Features:
See More
Product Features:
- Mobil 1 LS synthetic automotive gear lubricant exceeds the highest level of performance requirements of modern passenger vehicles
- Helps to provide exceptional thermal stability and resistance to high temperature oxidation and extend gear life due to minimal deposits
- Delivers outstanding protection against low speed/high torque wear, handling severe driving conditions with smooth, efficient performance
- Compared to conventional hypoid gear lubricants, performs exceptionally over a wide range of temperatures to reduce wear at start up
- Provides exceptional shear stability, corrosion protection, and enhanced frictional properties
- Manufacturer Part Number: 104361
Royal Purple – High Performance 5W-30 Synthetic Engine Oil, Better Wear Protection, 5 Quart (Part No.51530)
from
$41.99
Royal Purple Motor Oil is a specially formulated multi viscocity oil for use in gasoline and diesel engines of all types from cars and trucks to SUVs, motorcycles and boats. Royal Purple(R) Motor Oil with Synerlec(R) additive technology reduces friction, which results in a 1-3 percent increase in horsepower, lowers operating temperatures, provides superior corrosion protection, improves fuel economy, reduces emissions and extends oil life. A.P.I. Certified.
Product Features:
See More
Product Features:
- Better wear protection
- Increased fuel efficiency
- Better protection of the expensive catalytic emission system
- Improved compatibility with fuels containing ethanol
- Superior corrosion protection
- Meets ILSAC GF-5 and Dexos1 performance requirements
Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)
from
$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
National – Tapered Roller Bearing Cone (Part No.HM88542)
from
$23.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
National – Tapered Roller Bearing Cone (Part No.HM89449)
from
$22.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
National – Bearing Race (Part No.HM88510)
from
$11.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Whiteline – Rear Diff Mount Insert (Part No.KDT969)
from
$16.99
Whiteline’s differential bushing solutions ensure pinion angles are maintained while delivering an improved gear shift resulting in reduced initial torque loss and greater power transfer to the wheels.
Product Features:
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Product Features:
- Designed with the installer in mind by reducing the need of specialised skills, tools and equipment.
- Protective plating on all metal components acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
- Internal grease reservoirs provide continual self-lubrication for optimum friction management.
Whiteline – Differential Front Mount Bushing (Part No.W92623)
from
$22.99
Whiteline’s differential bushing solutions ensure pinion angles are maintained while delivering an improved gear shift resulting in reduced initial torque loss and greater power transfer to the wheels.
Product Features:
See More
Product Features:
- Protective plating on all metal components acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
- Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
- Specially bonded design for optimised strength typically required in high load bearing applications.
Popular 1999 BMW 323i Differentials Categories
Most Popular Front Differential Pinion Bearings for 1999 BMW 323is
Enhance your 1999 BMW 323i with one of the 3 Front Differential Pinion Bearings we have in stock, starting at just $11.79.
National – Tapered Roller Bearing Cone (Part No.HM89449)
from
$22.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
National – Tapered Roller Bearing Cone (Part No.HM88542)
from
$23.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
National – Bearing Race (Part No.HM88510)
from
$11.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Best-Selling 1999 BMW 323i Differential Bearings
Upgrade your 323i with one of our 2 best-selling Differential Bearings, earning an average 5 stars rating across 2 reviews.
National – Tapered Roller Bearing Cone (Part No.LM503349A)
from
$22.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Product Features:
See More
Product Features:
- PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN – Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
FAG US – Cup (Part No.LM501310)
from
$9.99
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.
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
Top-Quality Differential Seals for 1999 BMW 323is
Choose a high-quality OEM or aftermarket Differential Seal for BMW 323is and enjoy top-notch performance from $4.79.
Our Top Pick for a 1999 BMW 323i Differential Cover
Invest in a
durable Differential Cover for your 1999 BMW, knowing you’re getting trusted brands and expert craftsmanship.
Dorman – Differential Cover Assembly (OE Fix) (Part No.697-550)
from
$293.99
The original differential cover on certain BMW 3 Series models may break at its mounting position, causing the rear axle to shift in place. This Dorman OE FIX replacement features additional bracing and thicker ribs to prevent future failures.
Product Features:
See More
Product Features:
- Upgraded replacement – this differential cover features additional bracing and thicker materials for a more reliable repair
- Application specific – made to match the fit and function of the original cover on certain BMW 3 Series model years
- Durable materials – made of die cast aluminum
- Quality engineering – designed in the United States and backed by decades of automotive aftermarket experience
Top-Rated Differential Oil for 1999 BMW 323is
Make a smart move for your 1999 BMW 323i with products all priced from $11.99 to $41.99.
Mobil 1 – 75W-90 Full Synthetic Gear Lubricant, Extends Gear Life, 1 Quart (Part No.26101)
from
$19.99
Mobil 1 Synthetic Gear Lubricant LS 75W-90 is a supreme, multi-purpose automotive gear lubricant that helps to provide exceptional thermal stability and resistance to high temperature oxidation, extending gear life due to minimal deposits. Helps to deliver outstanding protection against low speed/high torque wear with the capability to handle severe driving conditions while delivering smooth efficient performance. Mobil 1 Synthetic Gear Lubricant LS provides exceptional shear stability, corrosion protection, and enhanced frictional properties. Compared to conventional hypoid gear lubricants, Mobil 1 LS 75W-90 performs exceptionally over a wide range of temperatures to reduce wear at start up. Mobil 1 gear lube helps to minimize leakage and reduce contamination while providing good resistance to foaming to maintain film strength for reliable lubrication. Meets or exceeds the requirements of the following industry specifications: API GL-5.
Product Features:
See More
Product Features:
- Mobil 1 LS synthetic automotive gear lubricant exceeds the highest level of performance requirements of modern passenger vehicles
- Helps to provide exceptional thermal stability and resistance to high temperature oxidation and extend gear life due to minimal deposits
- Delivers outstanding protection against low speed/high torque wear, handling severe driving conditions with smooth, efficient performance
- Compared to conventional hypoid gear lubricants, performs exceptionally over a wide range of temperatures to reduce wear at start up
- Provides exceptional shear stability, corrosion protection, and enhanced frictional properties
- Manufacturer Part Number: 104361
Royal Purple – High Performance 5W-30 Synthetic Engine Oil, Better Wear Protection, 5 Quart (Part No.51530)
from
$41.99
Royal Purple Motor Oil is a specially formulated multi viscocity oil for use in gasoline and diesel engines of all types from cars and trucks to SUVs, motorcycles and boats. Royal Purple(R) Motor Oil with Synerlec(R) additive technology reduces friction, which results in a 1-3 percent increase in horsepower, lowers operating temperatures, provides superior corrosion protection, improves fuel economy, reduces emissions and extends oil life. A.P.I. Certified.
Product Features:
See More
Product Features:
- Better wear protection
- Increased fuel efficiency
- Better protection of the expensive catalytic emission system
- Improved compatibility with fuels containing ethanol
- Superior corrosion protection
- Meets ILSAC GF-5 and Dexos1 performance requirements
Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)
from
$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Top-Rated Differential Brands For Your 1999 BMW 323i
When it comes to finding the perfect Differential for your 1999 BMW 323i, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Differential brands including Mobil Oil, Royal Purple, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.9 stars) and competitive prices, as low as $19.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1999 BMW 323i, providing peace of mind with parts that meet or exceed OEM standards.
Popular Mobil Oil 1999 BMW 323i Differentials
If you’re looking for a top-quality Differential for your 1999 BMW 323i, Advance Auto Parts has exactly what you need with our selection of Mobil Oil Differentials. We have 1 Mobil Oil Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $19.99, you’ll find the perfect Differential for your needs and budget. Mobil Oil Differentials for the 1999 BMW 323i come highly rated, with over 448 customer reviews and an impressive average rating of 4.9 stars. Choosing a Mobil Oil Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Top-Quality Royal Purple 1999 BMW 323i Differentials
For those in search of a high-quality Differential for their 1999 BMW 323i, Advance Auto Parts offers a great selection of Royal Purple Differentials. With 1 Royal Purple Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $41.99, giving you a range of options to suit your budget. Backed by over 133 customer ratings and an average rating of 4.8 stars, Royal Purple Differentials provide both reliability and excellent performance. Choosing a Royal Purple Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
from
$41.99
(133)
High Performance 5W-30 Synthetic Engine Oil, Better Wear Protection, 5 Quart
“The best”
FAQs for 1999 BMW 323i Differentials
What are the best-selling Differentials for 1999 BMW 323is?
Out of 15 Differentials that fit 1999 BMW 323is, the following parts are the top sellers:
- DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
- Tapered Roller Bearing Cone (3276961) – $23.49
- Tapered Roller Bearing Cone (5052424) – $22.99
What’s the price range for 1999 BMW 323i Differentials?
The prices of Differentials for the 1999 BMW 323i range from $4.79 up to $293.99 for the most premium parts.
What is the average price of a Differential for a 1999 BMW 323i?
The average price for Differentials for the 1999 BMW 323i is $37.78. 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 1999 BMW 323i?
The cheapest 1999 BMW 323i Differentials we carry are:
- Differential Seal (11494079) – $4.79
- Cup (50206181) – $9.99
- Bearing Race (5052416) – $10.79
- Bearing Race (3276953) – $11.79
- DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
Does Advance Auto Parts sell Differentials for any other 1999 BMW models?
Yes. We stock Differentials for 14 other popular 1999 BMW models. Some of the most popular are 1999 328i Differentials, 1999 M3 Differentials, 1999 528i Differentials, 1999 Z3 Differentials, and 1999 750iL Differentials.
What are the top-rated Differentials that fit the 1999 BMW 323i?
The one 1999 BMW 323i Differential we have in stock is the Differential Seal. It costs $4.79.
What types of Differentials do you sell for my 1999 BMW 323i?
As of 11/2/25, these are some of the most in-demand types of Differentials for a 1999 BMW 323i:
Can I get help with 1999 BMW 323i 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 323i Differentials?
Advance Auto Parts keeps returns simple. For new BMW 323i Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.