Mopar Performance Engine Crankshaft Adapter Sleeve

Factory-Engineered Crankshaft Pilot Support from Mopar Performance

The crankshaft adapter sleeve is a small part with an important job. Fitted into the rear of the crankshaft, it provides the pilot surface that centers the transmission input shaft or torque converter hub, keeping the drivetrain aligned with the engine. When this interface is worn, damaged, or incorrectly sized, the result can be vibration, premature wear, and difficult transmission installation. Mopar Performance offers an OE-specification solution for late-model Chrysler, Dodge, Jeep, and Ram applications.

The Mopar Performance Sleeve: Part 04736283AA

The Mopar Performance offering in this category is the crankshaft pilot sleeve, part number 04736283AA. It is a steel, OE-replacement sleeve designed for Gen III HEMI-based engines. It is listed under several names, including crank shaft pilot sleeve and crankshaft sleeve, so keep that in mind when cross-referencing part numbers. Its role is to support proper transmission input shaft alignment at the back of the crankshaft.

Because this is an original-equipment part rather than a universal adapter, it is intended to drop in where the factory sleeve sat. Fitment notes for the part reference a wide range of HEMI-family engines, including:

• 5.7L HEMI V8 (VCT, MDS VCT, and MDS VVT variants)
• 6.1L SRT HEMI V8
• 6.4L SRT HEMI V8
• 6.2L supercharged HEMI V8 used in Hellcat-powered applications

Applications also extend to certain V6 models, such as the 3.6L Durango. Fitment notes also indicate this sleeve is one of several parts required when replacing the earlier part number 68402043AA on some supercharged 6.2L applications, so it is worth confirming the full parts list for your specific vehicle before ordering.

Why Choose a Mopar Performance Part Here

Mopar parts are designed and engineered by the same teams responsible for the Chrysler, Jeep, Dodge, Ram, and FIAT vehicles they fit, and are tested against OEM standards. For a pilot sleeve, where dimensional precision matters more than flashy features, that matters. The sleeve needs to seat correctly in the crankshaft and present the exact pilot diameter the transmission or converter expects.

This is a different proposition from aftermarket adapter sleeves, which are often designed to let a converter from another manufacturer fit a HEMI crankshaft. The Mopar Performance part is the straightforward, factory-matched choice for restoring original function during an engine or transmission rebuild, a crate engine installation, or a drivetrain refresh.

Shopping Tips

• Confirm your engine and transmission: Check the part number against your exact engine variant and model year.
• Replace during service: When the transmission is out, it is the ideal time to inspect or replace the pilot sleeve and related drivetrain components.
• Check related parts: Some applications call for several parts together, so verify your complete parts list.

To see more from the manufacturer, visit the Mopar Performance brand page. For a broader look at how these components work and what to consider when choosing one, browse the full Engine Crankshaft Adapter Sleeve category.