Splined Left Side Birdcage Spacer

The Splined Left Side Birdcage Spacer from Diversified Machine (part number SRC-2601) is a precision-engineered component designed for use with DMI birdcage differential assemblies. This left-hand splined spacer functions as a bearing shoulder within birdcage-style limited-slip differentials, managing axial load distribution and maintaining proper gear mesh geometry during acceleration and deceleration cycles.

Built from steel with a splined bearing shoulder design, this spacer carries a 3.25-inch inside diameter and 4.75-inch outside diameter with 46 splines for secure engagement within the DMI birdcage assembly. The splined interface prevents rotational slippage and distributes radial forces evenly across multiple engagement points. Weighing 0.33 pounds and measuring 3.45 x 0.9 x 5.05 inches, the component integrates seamlessly into complete differential assemblies. Steel construction provides the rigidity and fatigue resistance required in high-load differential environments where repeated stress cycles are common.

This spacer is specified for builders and technicians assembling or servicing DMI birdcage differentials in performance vehicles, drag racing platforms, and off-road applications where load-biasing differentials are critical. Installation requires precise alignment and torque specification per the assembly manual to ensure proper preload and load transfer characteristics. The left-side designation indicates driver-side mounting orientation in standard vehicle layouts.

Birdcage differentials remain popular in motorsports and high-performance street applications because they provide intermediate locking behavior—less aggressive than a spool, more responsive than open differentials. Spacers like this one are wear items that may require replacement during differential service or rebuild, particularly in vehicles subjected to sustained high-torque scenarios. Diversified Machine components are widely recognized in the performance differential market for dimensional accuracy and material consistency.

SKU DMISRC-2601 is the correct identifier for this specific left-side configuration. When ordering replacement or additional spacers, confirm the spline count (46), bore diameter (3.25"), and OD (4.75") match your assembly documentation to avoid fitment issues during installation.