Drivetrain› Differentials and Rear-End Components

BMW

Welded Differential, 2.56 Ratio, 4-Clutch

$1,399.00

SKU: BW Part #: DOLE9X335D

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Diffsonline welded differential is a custom performance differential built for the BMW E9X 335 Diesel. It features a 2.56 gear ratio and a 4-clutch system with a 35-60 ramp lockup. Diffsonline builds these differentials in-house, starting with cleaning the housing, then selecting premium ring and pinion gears, and assembling with desired clutch packs and options.
Show original supplier description
The Diffsonline custom performance differential is engineered for the BMW E9X 335 Diesel models. This differential is built to order, with a typical lead time of 6-8 weeks. It features a 2.56 gear ratio, a 4-clutch system, and a 35-60 ramp lockup, designed to enhance acceleration and grip. Diffsonline assembles these differentials in-house, ensuring quality from the initial cleaning of the housing to the final assembly. They utilize industry-leading ring and pinion gears, combined with your specified clutch packs and options, to create a tailored performance upgrade for your vehicle. When selecting your differential, consider the desired gear ratio, which affects engine RPMs at a given speed. You can also choose the degree of limited slip, from open to 75%, with variable ramp lockups and clutch configurations. Optional upgrades include ring and pinion polishing for reduced friction and temperature, as well as upgraded rear covers and necessary hardware.

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

BrandBMW
Part NumberBW Part #: DOLE9X335D
CategoryDrivetrain
5,000+ Trusted brands
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(760) 282-4645 hello@motormia.co

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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