Drivetrain› Differentials and Rear-End Components

Wavetrac

ATB LSD Built Differential 2.81 Ratio

$250.00

SKU: 33107603760-W-1

In Stock
In Stock
Ships by Aug 31
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Wavetrac ATB LSD Built Differential is a technologically advanced Automatic Torque Biasing Limited Slip Differential designed for select BMW models with a 2.81 final drive ratio. This differential offers superior traction and stability. It is built in American plants to ISO9002 and TS16949 standards.
Show original supplier description
The Wavetrac ATB LSD Built Differential represents a significant upgrade for BMW owners seeking enhanced traction and performance. Wavetrac is recognized as the most technologically advanced ATB LSD available, featuring patent-protected designs that deliver exceptional performance and longevity. This specific unit is engineered for BMW models equipped with the 33107603760 axle and a 2.81 final drive ratio. It addresses a common challenge with many BMW axles manufactured from 2007 onwards, which feature a friction-welded ring gear and differential that can complicate installation. Wavetrac Europe provides solutions for this, including machining services to separate and prepare these components for LSD installation. The product listing details five service options for installation and supply, ranging from separating and tapping your existing ring gear to supplying and fitting a new Wavetrac LSD into a new BMW axle. It is crucial to note that axles can vary by model, trim, and market; therefore, providing your VIN is recommended to ensure the correct axle is supplied. Axles are shipped dry and must be filled with the manufacturer-specified oil level before use. Applicable models include various configurations of the 2 Series (F22, F23 LCI), 3 Series (F30, F30 LCI, F31, F31 LCI, F34 GT, F34 GT LCI), and 4 Series (F32, F32 LCI, F33, F33 LCI, F36 Gran Coupé, F36 Gran Coupé LCI) when equipped with the 2.81 final drive axle.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandWavetrac
Part Number33107603760-W-1
CategoryDrivetrain

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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