For BMW G20 G22 320i 330i 420i 430i 33108647923 Rear Differential 2.81 Ratio
Description

⚠️ Important Pre-Purchase Verification Reminder

This remanufactured rear differential is built for late-model G-Series BMWs, but fitment can vary by production build date, drivetrain and factory option codes.
The vehicle compatibility chart is for reference only. Before you complete checkout, send us your full 17-digit VIN and clear photos of your original old differential to our eBay messages. Our technical team will double-check and confirm 100% matching fitment for your car to avoid costly mismatched returns.

🔎 Interchangeable OEM / OE Reference Part Numbers

All three part numbers represent the identical rear differential unit and are fully cross-compatible replacements:
33108698994, 33108647923, 8647923

🚗 Complete Vehicle Fitment List

This 2.81 ratio rear differential assembly fits the following G20 3 Series & G22 4 Series BMW models:

BMW 2 Series G42

  • 230i Coupe (2022, 2023, 2024, 2025)
  • 230iX Coupe (2023, 2024, 2025)

BMW 3 Series G20 Sedan

  • 330i Sedan (2019–2025)
  • 330iX xDrive Sedan (2018–2025)

BMW 4 Series G22 Coupe / G23 Convertible

  • 430i Coupe (2021–2025)
  • 430i Convertible (2021–2025)
  • 430iX xDrive Coupe (2021–2025)
  • 430iX xDrive Convertible (2022–2025)
Platform Coverage: All standard G-Series BMW G20 3 Series and G22/G23 4 Series factory models matched with the 2.81 rear gear ratio.

📋 Full Product Specifications

▪️ Item Type: Complete Rear Differential Assembly
▪️ Gear Ratio: 2.81
▪️ Mount Location: Rear Axle
▪️ Construction Material: Heavy-Duty Metal Casting
▪️ Condition: Professionally Remanufactured
▪️ Exterior Color & Finish: Matches all listing product photos

⛔ Critical Lubrication & Installation Warning

  1. Standard gear oil must be fully added to this differential prior to vehicle installation. The unit ships with minimal protective fluid only to prevent transit corrosion.
  2. Operating the differential without proper, full gear oil fill will lead to internal gear scoring, bearing failure, loud driveline noise and permanent catastrophic damage.
  3. We do not accept returns, exchanges, or damage claims for any unit ruined by improper installation techniques, insufficient lubrication, or the use of incorrect non-specified fluids.
  4. We strongly recommend installation by a certified BMW drivetrain specialist. Professional setup ensures proper backlash adjustment, leak-free sealing, and long service life.

✨ Core Product Features & Benefits

  1. OEM-Spec Engineering & Rigorous Quality Control
    Manufactured and rebuilt strictly to original BMW factory dimensions and performance standards. Every unit undergoes multi-stage quality inspections during remanufacturing to meet or exceed OE requirements for fit, surface finish, and driving functionality. Perfect bolt-on direct swap with no cutting, grinding, or custom modifications needed.
  2. Heavy-Duty Long-Lasting Metal Construction
    Built with premium wear-resistant metal components to handle daily commuting, highway cruising, and regular road load stress. All worn internal gears, bearings, and sealing hardware are fully replaced during the remanufacturing process for extended reliability.
  3. Consistent, Stable Drivetrain Performance
    Precision-calibrated internal gear sets deliver smooth, quiet operation with no excessive whining, vibration, or slip during acceleration and deceleration. Restores factory drivetrain feel for your BMW 3/4/2 Series.
  4. Cost-Effective Remanufactured Alternative
    A budget-friendly reliable replacement compared to expensive brand-new OEM dealer differentials. Our professional rebuild process eliminates common original unit faults like oil leaks, worn bearings, and damaged ring/pinion gears.
  5. Trusted Automotive Parts Supplier Support
    We specialize in late-model BMW drivetrain components with deep professional technical knowledge. Enjoy fast order processing, quick shipping times, and responsive customer support via eBay messages for all your fitment and product questions.

📦 What Is Included In Your Order

1 x Complete Remanufactured Rear Differential Assembly
All internal factory-matched components pre-installed, exactly as pictured in listing images.

Buyer Important Notes

  • VIN and original part photo verification is highly recommended before purchase. Customers who order without confirming compatibility will be responsible for all outbound and return shipping fees if the differential does not fit their vehicle.
  • This rear differential is designed exclusively for the listed 230i / 330i / 430i G-Series models with factory 2.81 gear ratio. It will not fit M variants, different engine trims, or vehicles equipped with alternate axle ratios.
  • Damage arising from amateur DIY installation, wrong lubricants, or missing pre-install gear oil fill voids all return and damage claim eligibility.

1.We suggest that ask professional to install products and contact us when installing issue happened. We are not responsible for installing or uninstalling.

2.If there is any problem with the product quality, please contact us first before you opened the return, we will try our best to solve all problems for you.

3.The returning item should be in it's original packaging and assure all parts included .

Attention:Any problems please contact us at any time before leaving a negative/neutral feedback and opening the return request. Many thanks to you."
1.Please make sure your eBay shipping address is correct for your receipt.
2.After you paid,we will ship it asap."
1. Accept Paypal ,Card and Bank.
2. All major credit cards are accepted through our secure payment system.
3. We ship to your payment address. Please make sure your penment address is correct before paying."
Please contact us in time if any inquiries under any circumstances. We greatly appreciate your positive feedback and will do the same for you. We care about our valued customers and will always do our best to help you, should you have any problems. Working time: GMT 8/9: 00-18: 30 normally we will reply you within one business day.

On Jun 14, 2026 at 23:18:00 PDT, seller added the following information:

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