S3.91 BMW Lsd Rear Differential E36 325I

Review BMW Medium Case Lsd Rear Differential Diff 164k Oem for S3 E36 325I 1994–1999

The BMW E36 325i LSD Rear Differential with the part number S3.91, manufactured between 1994 and 1999, is a high-performance component designed for the BMW 3 Series. This differential is a crucial element of the vehicle's powertrain, responsible for transmitting engine power to the wheels while also managing the torque distribution.

The S3.91 differential is an upgrade over the standard open differential, featuring a Limited-Slip Design (LSD). The LSD provides better traction and stability during cornering by preventing the inside wheel from spinning faster than the outside wheel when turning. This results in improved grip, reduced tire wear, and enhanced overall driving dynamics.

This BMW differential is designed to handle a maximum torque of 325 Nm and can accommodate various engine sizes, making it a versatile option for the E36 platform. It is manufactured using high-strength materials, ensuring durability and reliability even under heavy usage.

The S3.91 rear differential also includes an integrated differential cooler, which helps maintain optimal operating temperatures, especially during high-performance driving. This cooler reduces the risk of overheating and potential damage to the differential gears.

The installation of this BMW differential requires professional expertise, as it involves the removal of the old differential, transmission oil change, and the installation of the new unit. It is essential to follow the manufacturer's instructions carefully to ensure proper installation and optimal performance.

In summary, the BMW E36 325i LSD Rear Differential (S3.91) is a high-performance upgrade for the E36 3 Series. Its Limited-Slip Design improves traction and stability, making it ideal for enthusiasts seeking enhanced driving dynamics. Manufactured with high-strength materials and featuring an integrated differential cooler, this differential guarantees durability, reliability, and optimal temperature management.

Buying a BMW E36 325i LSD rear differential with 164k miles can be a worthwhile investment for certain enthusiasts and collectors. Here are some pros and cons to consider:

1. Limited-Slip Differential (LSD): An LSD provides better traction and stability, especially during cornering. It can help improve the driving experience, particularly for those who enjoy taking their cars on winding roads.

2. Reliability: BMW is known for its engineering and build quality. With proper maintenance, an E36 differential can last for many years and miles.

3. Availability of Spare Parts: BMW is a popular brand, and parts for the E36 are widely available, making it easier to find spare parts if needed.

4. Value Retention: BMW models, especially those with desirable features like an LSD rear differential, tend to hold their value well.

1. Cost: The price of a used BMW E36 325i LSD rear differential, especially one with lower mileage, can be quite high. Additionally, the cost of maintenance and repairs can add up over time.

2. Complexity: BMW differentials can be quite complex, with multiple components requiring regular maintenance. This can make DIY repairs more challenging.

3. Potential for Wear and Tear: With 164k miles on the differential, there is a higher likelihood of wear and tear, which may require more frequent maintenance or repairs.

4. Availability: Finding a used BMW E36 325i LSD rear differential in good condition with low miles can be challenging, which may limit options for buyers.

Buying a BMW E36 325i LSD rear differential with 164k miles can be a wise investment for those who value performance, reliability, and the brand. However, it comes with higher costs, complexity, and potential wear and tear. Prospective buyers should carefully consider their budget, maintenance capabilities, and desired driving experience before making a purchase.

If you are in the market for a used BMW E36 325i LSD rear differential and have the budget and resources for maintenance, it can be a worthwhile investment for the improved driving experience and potential value retention. However, it is crucial to inspect the differential thoroughly before purchasing and consider the availability of spare parts and the cost of maintenance. Alternatively, buyers may want to consider other models or options that offer similar performance characteristics but may be more affordable or require less maintenance.

Details:

94-99 Bmw E36 325I medium case S3.91 lsd rear differential diff 164k oem this item is used with normal wear tear. You can get the code from your local dealer with proof of purchase and serial number off radio. Air bags: bags are considered hazardous materials so will need to be shipped via USPS ground. Wheels tires: unless specified, tires are included free of charge.

To view picture details. Confirm fitment with your dealer or mechanic. Instrument clusters: most modern cars have immobilizers built into the instrument clusters. Seat belts: belts with c02 pretensions are considered hazardous materials so will need to be shipped via USPS ground.

Our shipping price is for delivery to a commercial address with loading bay or forklift.

specifications differentialsdepo:

• for models: S3, E36, 325i
• for years: 1994–1999
• brand: Bmw
• mpn: S3.91
• part type: Case
• country of manufacture: De
• brand type: Genuine Oem
• year range: 1994 1995 1996 1997 1998 1999 94 95 96 97 98 99

shipping differentialsdepo:

• service: standard
• transit: 6-12 days
• class: standard
• type: fixed

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

payments differentialsdepo:

• credit card: mastercard
• other
• wallet: paypal

seller differentialsdepo:

• rating: 97.0%
• # reviews: 7391
• city: blaine, washington

returns differentialsdepo:

• paid by: buyer
• time: 30 days
• policy: returns accepted

offer differentialsdepo:

• price: $667.50
• item condition: Used
• in stock #: 5
• sold #: 9
• started: december 25, 2025
• options: ship-to-home
• availability: in stock