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Drivetrain Differentials and Rear-End Components

Wavetrac

Differential with 9310 Steel Gears

$1,395.00 $1,245.50 Save $149.50

SKU: 30.309.175WK

In Stock
In Stock
Ships by Aug 3
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Wavetrac Limited Slip Differential offers enhanced traction and performance for specific BMW models equipped with a welded ring gear. Its innovative, patented design directly addresses the problem of zero or near-zero axle-load, which commonly occurs during aggressive cornering when one drive wheel experiences minimal load, or during transitions between engine driving and engine braking, even with both wheels on the ground. At the core of its functionality is the Wavetrac device, which activates precisely when zero or near-zero axle-load is detected. This occurs when the axles begin to turn at different speeds, and the Wavetrac device steps in to manage this speed differential, providing superior grip and control. The unit is built with premium materials, including high-strength 9310 steel gears and case-hardened, billet or forged steel housings. The Wavetrac LSD is designed for various BMW applications including E46 325i, 328i, 330i (AT 1998-2005), E9X 325i, 328i, 330i (2006>), E9X 335i (AT 9/2007>), E8X 135i (AT 2008>), E8X 128i (2008>), E60 525i, 528i, 530i (AT), F10 528i, 535i (AT), E8X Z4 2.5i, 3.0i, F3X 328i/428i, and F3X 335i/435i (AT). It is compatible with the 188K axle size and a final drive ratio greater than 3.15. The product comes with a manufacturer limited lifetime warranty. This differential is noted for its superior materials, maintenance-free operation, and customizable capabilities, making it suitable for high-performance road cars that also see track use. It is described as being very strong yet transparent to both the driver and the vehicle's systems.

MIA's Description

It features a patented device that responds to zero or near-zero axle-load conditions, such as during aggressive cornering or transitions between acceleration and engine braking. The differential is constructed with high-strength 9310 steel gears and case-hardened housings, utilizing ARP fasteners throughout for durability.

Fitment

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Specifications

BrandWavetrac
Part Number30.309.175WK
CategoryDrivetrain

Buy with Confidence

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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